1
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Wei J, Pham T, Attah EI, Liu M, Yaroshuk T, Chen H, Wojtas L, Shi X. Gold-Catalyzed Diyne-Ene Annulation for the Synthesis of Polysubstituted Benzenes through Formal [3+3] Approach with Amide as the Critical Co-Catalyst. Angew Chem Int Ed Engl 2024; 63:e202407360. [PMID: 38973064 DOI: 10.1002/anie.202407360] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2024] [Revised: 06/05/2024] [Accepted: 07/04/2024] [Indexed: 07/09/2024]
Abstract
The one-step synthesis of tetra-substituted benzenes was accomplished via gold-catalyzed diyne-ene annulation. Distinguished from prior modification methods, this novel strategy undergoes formal [3+3] cyclization, producing polysubstituted benzenes with exceptional efficiency. The critical factor enabling this transformation was the introduction of amides, which were reported for the first time in gold catalysis as covalent nucleophilic co-catalysts. This interesting protocol not only offers a new strategy to achieve functional benzenes with high efficiency, but also enlightens potential new reaction pathways within gold-catalyzed alkyne activation processes.
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Affiliation(s)
- Jingwen Wei
- Department of Chemistry and Biochemistry, University of Maryland, College Park, Maryland, 20742, USA
| | - Thong Pham
- Department of Chemistry and Biochemistry, University of Maryland, College Park, Maryland, 20742, USA
| | - Emmanuel Ifeanyi Attah
- Department of Chemistry and Biochemistry, University of Maryland, College Park, Maryland, 20742, USA
| | - Mengjia Liu
- Department of Chemistry and Biochemistry, University of Maryland, College Park, Maryland, 20742, USA
| | - Timothy Yaroshuk
- Department of Chemistry and Environmental Science, New Jersey Institute of Technology, Newark, New Jersey, 07102, USA
| | - Hao Chen
- Department of Chemistry and Environmental Science, New Jersey Institute of Technology, Newark, New Jersey, 07102, USA
| | - Lukasz Wojtas
- Department of Chemistry, University of South Florida, Tampa, Florida, 33620, USA
| | - Xiaodong Shi
- Department of Chemistry and Biochemistry, University of Maryland, College Park, Maryland, 20742, USA
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2
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Martínez de Sarasa Buchaca M, Gaona MA, Sánchez-Barba LF, Garcés A, Rodríguez AM, Rodríguez-Diéguez A, de la Cruz-Martínez F, Castro-Osma JA, Lara-Sánchez A. Zinc-Catalyzed Cyclization of Alkynyl Derivatives: Substrate Scope and Mechanistic Insights. Inorg Chem 2024; 63:13875-13885. [PMID: 39011646 PMCID: PMC11289758 DOI: 10.1021/acs.inorgchem.4c00832] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2024] [Revised: 07/04/2024] [Accepted: 07/05/2024] [Indexed: 07/17/2024]
Abstract
Novel alkyl zinc complexes supported by acetamidate/thioacetamidate heteroscorpionate ligands have been successfully synthesized and characterized. These complexes exhibited different coordination modes depending on the electronic and steric effects of the acetamidate/thioacetamidate moiety. Their catalytic activity has been tested toward the hydroelementation reactions of alkynyl alcohol/acid substrates, affording the corresponding enol ether/unsaturated lactone products under mild reaction conditions. Kinetic studies have been performed and confirmed that reactions are first-order in [catalyst] and zero-order in [alkynyl substrate]. DFT calculations supported a reaction mechanism through the formation of the catalytically active species, an alkoxide-zinc intermediate, by a protonolysis reaction of the Zn-alkyl bond with the alcohol group of the substrate. Based on the experimental and theoretical results, a catalytic cycle has been proposed.
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Affiliation(s)
- Marc Martínez de Sarasa Buchaca
- Universidad
de Castilla-La Mancha, Departamento de Química Inorgánica,
Orgánica y Bioquímica-Centro de Innovación en
Química Avanzada (ORFEO−CINQA), Facultad de Ciencias
y Tecnologías Químicas, Instituto
Regional de Investigación Científica Aplicada-IRICA, Ciudad Real 13071, Spain
| | - Miguel A. Gaona
- Universidad
de Castilla-La Mancha, Departamento de Química Inorgánica,
Orgánica y Bioquímica-Centro de Innovación en
Química Avanzada (ORFEO−CINQA), Facultad de Ciencias
y Tecnologías Químicas, Instituto
Regional de Investigación Científica Aplicada-IRICA, Ciudad Real 13071, Spain
| | - Luis F. Sánchez-Barba
- Departamento
de Biología y Geología, Física y Química
Inorgánica, Universidad Rey Juan
Carlos, Móstoles 28933, Spain
| | - Andrés Garcés
- Departamento
de Biología y Geología, Física y Química
Inorgánica, Universidad Rey Juan
Carlos, Móstoles 28933, Spain
| | - Ana M. Rodríguez
- Universidad
de Castilla-La Mancha, Departamento de Química Inorgánica,
Orgánica y Bioquímica-Centro de Innovación en
Química Avanzada (ORFEO−CINQA), Facultad de Ciencias
y Tecnologías Químicas, Instituto
Regional de Investigación Científica Aplicada-IRICA, Ciudad Real 13071, Spain
| | - Antonio Rodríguez-Diéguez
- Departamento
de Química Inorgánica, Facultad de Ciencias, Universidad de Granada, Granada 18071, Spain
| | - Felipe de la Cruz-Martínez
- Departamento
de Química Inorgánica, Orgánica y Bioquímica-Centro
de Innovación en Química Avanzada (ORFEO−CINQA),
Facultad de Farmacia, Universidad de Castilla-La
Mancha, Albacete 02071, Spain
| | - José A. Castro-Osma
- Departamento
de Química Inorgánica, Orgánica y Bioquímica-Centro
de Innovación en Química Avanzada (ORFEO−CINQA),
Facultad de Farmacia, Universidad de Castilla-La
Mancha, Albacete 02071, Spain
| | - Agustín Lara-Sánchez
- Universidad
de Castilla-La Mancha, Departamento de Química Inorgánica,
Orgánica y Bioquímica-Centro de Innovación en
Química Avanzada (ORFEO−CINQA), Facultad de Ciencias
y Tecnologías Químicas, Instituto
Regional de Investigación Científica Aplicada-IRICA, Ciudad Real 13071, Spain
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3
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Narra RR, Unnithan VG, Liu Y, Guo Z. Rapid Access to Divergent Fused Polycycles Via One-Pot A 3 Coupling and Intramolecular Diels-Alder Reaction. Chemistry 2024; 30:e202401449. [PMID: 38749918 DOI: 10.1002/chem.202401449] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2024] [Indexed: 06/29/2024]
Abstract
Divergent nitrogen-containing fused polycyclic ring systems are constructed from simple starting materials via a one-pot aldehyde-alkyne-amine (A3) coupling and intramolecular Diels-Alder reaction. This domino reaction directly furnishes linear 5/5/5 and 5/5/6, or nonlinear 5/5/6/5, polycyclic rings containing an oxa-bridged fused 5/5 bicycle and a 1,6-enyne substructure. One-step derivation of the oxa-bridged 5/5 bicycle leads to a polyfunctionalized 5/5 bicycle with tetrahydrofuran fused back-to-back to pyrroline or a 6/5 bicycle with the hexahydro-1H-isoindole structure, while cycloisomerizing the enyne substructure adds an extra fused 5-membered ring to afford functionalized linear 5/5/5/5 or 5/5/5/5/5 fused ring systems from selected substrates. In addition, the one-pot product can be designed so that the alkyne moiety is hydroalkoxylated to form an additional heterocyle in a linear 5/5/5/6 or nonlinear 5/5/6/5/5 ring system. This diversity-oriented synthetic approach thus allows rapid access to an under-explored structural space for discovery of new biological or non-biological activities or functions.
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Affiliation(s)
- Rajashekar Reddy Narra
- Department of Chemistry, The Hong Kong University of Science and Technology, Clear Water Bay, Hong Kong, China
| | | | - Yifan Liu
- Department of Chemistry, The Hong Kong University of Science and Technology, Clear Water Bay, Hong Kong, China
| | - Zhihong Guo
- Department of Chemistry, The Hong Kong University of Science and Technology, Clear Water Bay, Hong Kong, China
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4
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Gharpure SJ, Kalita D, Somani S, Pal J. Deciphering substitution effects on reductive hydroalkoxylation of alkynyl aminols for stereoselective synthesis of morpholines and 1,4-oxazepanes: total synthesis of tridemorph and fenpropimorph. Org Biomol Chem 2024; 22:5529-5533. [PMID: 38904968 DOI: 10.1039/d4ob00855c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/22/2024]
Abstract
Acid catalysed reductive etherification of N-propargyl amino alcohols for the stereoselective synthesis of cis-2,5/2,6-disubstituted morpholines and cis-2,6/2,7-disubstituted oxazepanes has been developed. Mechanistic studies revealed that terminal alkynols gave morpholines via a 6-exo-dig hydroalkoxylation-isomerization-reduction cascade. Interestingly, an alkyne hydration-cyclization-reduction sequence is found to be involved in the formation of oxazepanes from alkyl substituted internal alkynols. The strategy was used as a key step in the total synthesis of fungicides tridemorph and fenpropimorph.
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Affiliation(s)
- Santosh J Gharpure
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai - 400076, India.
| | - Deepika Kalita
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai - 400076, India.
| | - Shipra Somani
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai - 400076, India.
| | - Juhi Pal
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai - 400076, India.
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5
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Huang X, Yi C, Bai M, Tang Y, Xu S, Li Y. Ruthenium and Iodine Anion Cocatalyzed Cascade Dihalogenation and Cyclization of Internal Alkyne-Tethered Cyclohexadienones with 1,2-Dihaloethanes. J Org Chem 2024; 89:9686-9694. [PMID: 38907735 DOI: 10.1021/acs.joc.4c00951] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/24/2024]
Abstract
We have established an efficient ruthenium(II) and iodine anion cocatalyzed dihalogenation and cascade cyclization of internal alkyne-tethered cyclohexadienones, which stereoselectively afforded numerous dihalogenation products with a bioactive hydrobenzofuran skeleton in high yields under mild conditions. In this transformation, the reaction pathway was determined by the concentration of electrophilic iodine reagent, which also provided a strategy for control of the reaction selectivity. Furthermore, this method features the use of 1,2-dihaloroethane as the halogen source via iodine anion catalyst.
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Affiliation(s)
- Xiaoli Huang
- Department of Material Chemistry, School of Chemistry, Xi'an Jiaotong University, Xi'an 710049, P. R. China
| | - Cui Yi
- Department of Material Chemistry, School of Chemistry, Xi'an Jiaotong University, Xi'an 710049, P. R. China
| | - Meiqi Bai
- Department of Material Chemistry, School of Chemistry, Xi'an Jiaotong University, Xi'an 710049, P. R. China
| | - Yuhai Tang
- Department of Material Chemistry, School of Chemistry, Xi'an Jiaotong University, Xi'an 710049, P. R. China
| | - Silong Xu
- Department of Material Chemistry, School of Chemistry, Xi'an Jiaotong University, Xi'an 710049, P. R. China
| | - Yang Li
- Department of Material Chemistry, School of Chemistry, Xi'an Jiaotong University, Xi'an 710049, P. R. China
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6
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Eshagh Saatlo R, Oczlon J, Wunsch JF, Rudolph M, Rominger F, Oeser T, Shiri F, Ariafard A, Hashmi ASK. Gold(I)-Catalyzed Intramolecular 7-endo-dig Cyclization of Triene-Yne Systems: New Access towards Azulenothiophenes. Angew Chem Int Ed Engl 2024; 63:e202402481. [PMID: 38529673 DOI: 10.1002/anie.202402481] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2024] [Revised: 03/13/2024] [Accepted: 03/14/2024] [Indexed: 03/27/2024]
Abstract
We report the direct synthesis of new azulene derivatives through gold-catalyzed cyclization reactions. A five-membered ring as backbone in the applied triene-yne substrates turned out to be crucial to induce the 7-endo-dig cyclization mode necessary to trigger azulene formation. The obtained targets are of high interest due to their potential applications in different fields, like organic materials, medicine or cosmetics. UV/Vis spectra and cyclic voltammetry were measured, based on these the electronic properties were determined. Short two or three step sequences towards the applied starting materials make this approach synthetically highly attractive.
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Affiliation(s)
- Rebeka Eshagh Saatlo
- Organisch-Chemisches Institut, Heidelberg University, Im Neuenheimer Feld 270, 69120, Heidelberg, Germany
| | - Julian Oczlon
- Organisch-Chemisches Institut, Heidelberg University, Im Neuenheimer Feld 270, 69120, Heidelberg, Germany
| | - Jonas F Wunsch
- Organisch-Chemisches Institut, Heidelberg University, Im Neuenheimer Feld 270, 69120, Heidelberg, Germany
| | - Matthias Rudolph
- Organisch-Chemisches Institut, Heidelberg University, Im Neuenheimer Feld 270, 69120, Heidelberg, Germany
| | - Frank Rominger
- Organisch-Chemisches Institut, Heidelberg University, Im Neuenheimer Feld 270, 69120, Heidelberg, Germany
| | - Thomas Oeser
- Organisch-Chemisches Institut, Heidelberg University, Im Neuenheimer Feld 270, 69120, Heidelberg, Germany
| | - Farshad Shiri
- Department of Chemistry, Islamic Azad University, Central Tehran Branch, Poonak, Tehran, Iran
| | - Alireza Ariafard
- Department of Chemistry, Islamic Azad University, Central Tehran Branch, Poonak, Tehran, Iran
- Research School of Chemistry, Australian National University, Building 137, Sullivans Creek Road, Canberra, ACT 2601, Australia
| | - A Stephen K Hashmi
- Organisch-Chemisches Institut, Heidelberg University, Im Neuenheimer Feld 270, 69120, Heidelberg, Germany
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7
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Liang RX, Ding C, Cai HJ, Wang JY, Li QC, Yu GY, Jia YX. Pd-Catalyzed Enantioselective Desymmetrizing 1,7-Enyne Cycloisomerization of Alkyne-Tethered Cyclopentenes. Org Lett 2024; 26:4400-4405. [PMID: 38735050 DOI: 10.1021/acs.orglett.4c01507] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/14/2024]
Abstract
An enantioselective Pd-catalyzed intramolecular desymmetrizing cycloisomerization of N-(cyclopent-3-en-1-yl)propiolamides has been developed by employing a new chiral phosphoramidite ligand. A series of structurally unique bridged azabicycles are achieved in moderate to excellent yields with good E/Z selectivity and high enantioselectivity. Synthetic transformations are conducted to demonstrate the practical utility of this reaction.
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Affiliation(s)
- Ren-Xiao Liang
- College of Chemical Engineering, State Key Laboratory Breeding Base of Green-Chemical Synthesis Technology, Zhejiang University of Technology, Chaowang Road 18#, Hangzhou 310014, China
| | - Chao Ding
- College of Chemical Engineering, State Key Laboratory Breeding Base of Green-Chemical Synthesis Technology, Zhejiang University of Technology, Chaowang Road 18#, Hangzhou 310014, China
| | - Hu-Jie Cai
- College of Chemical Engineering, State Key Laboratory Breeding Base of Green-Chemical Synthesis Technology, Zhejiang University of Technology, Chaowang Road 18#, Hangzhou 310014, China
| | - Jia-Yi Wang
- College of Chemical Engineering, State Key Laboratory Breeding Base of Green-Chemical Synthesis Technology, Zhejiang University of Technology, Chaowang Road 18#, Hangzhou 310014, China
| | - Qi-Chuang Li
- College of Chemical Engineering, State Key Laboratory Breeding Base of Green-Chemical Synthesis Technology, Zhejiang University of Technology, Chaowang Road 18#, Hangzhou 310014, China
| | - Gao-Yang Yu
- College of Chemical Engineering, State Key Laboratory Breeding Base of Green-Chemical Synthesis Technology, Zhejiang University of Technology, Chaowang Road 18#, Hangzhou 310014, China
| | - Yi-Xia Jia
- School of Chemistry and Chemical Engineering, Tianjin University of Technology, Tianjin 300384, China
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai 200032, China
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8
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Wang N, Xu HJ, Li T, Ye LW, Zhou B. Copper-Catalyzed [2 + 2] Cyclization/Ring Expansion of Ene-Ynamides: Construction of Medium- and Large-Sized Rings. Org Lett 2024; 26:3861-3866. [PMID: 38679881 DOI: 10.1021/acs.orglett.4c01013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/01/2024]
Abstract
Catalytic cyclization of enynes is an efficient approach for the preparation of cyclic compounds, and a large variety of four- to six-membered rings could be synthesized using this method. However, it has been rarely employed for the construction of medium- and large-sized rings. Herein, we describe a copper-catalyzed cycloisomerization of ene-ynamides through a [2 + 2] cyclization/electrocyclic ring opening cascade, leading to the atom-economical assembly of indole-fused medium- and large-sized rings in moderate to excellent yields under mild reaction conditions. Importantly, the synthetic utility of this reaction was demonstrated by the convenient synthesis of iprindole.
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Affiliation(s)
- Nan Wang
- College of Chemistry and Pharmaceutical Engineering, Nanyang Normal University, Henan 473061, China
| | - Hao-Jin Xu
- Key Laboratory of Chemical Biology of Fujian Province and State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
| | - Ting Li
- College of Chemistry and Pharmaceutical Engineering, Nanyang Normal University, Henan 473061, China
| | - Long-Wu Ye
- Key Laboratory of Chemical Biology of Fujian Province and State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai 200032, China
| | - Bo Zhou
- Key Laboratory of Chemical Biology of Fujian Province and State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
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9
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Haritha Kumari A, Jagadesh Kumar J, Sharadha N, Rama Krishna G, Jannapu Reddy R. Visible-Light-Induced Radical Sulfonylative-Cyclization Cascade of 1,6-Enynol Derivatives with Sulfinic Acids: A Sustainable Approach for the Synthesis of 2,3-Disubstituted Benzoheteroles. CHEMSUSCHEM 2024:e202400227. [PMID: 38650432 DOI: 10.1002/cssc.202400227] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/31/2024] [Revised: 04/22/2024] [Accepted: 04/23/2024] [Indexed: 04/25/2024]
Abstract
Benzoheteroles are promising structural scaffolds in the realm of medicinal chemistry, but sustainable synthesis of 2,3-difunctionalized benzoheterole derivatives is still in high demand. Indeed, we have conceptually rationalized the intrinsic reactivity of propargylic-enyne systems for the flexible construction of 2,3-disubstituted benzoheteroles through radical sulfonylative-cyclization cascade under organophotoredox catalysis. We hereby report an efficient visible-light-induced sulfonyl radical-triggered cyclization of 1,6-enynols with sulfinic acids under the dual catalytic influence of 4CzIPN and NiBr2⋅DME, which led to the formation of 2,3-disubstituted benzoheteroles in good to high yields. Additionally, the Rose Bengal (RB)-catalyzed radical sulfonylative-cycloannulation of acetyl-derived 1,6-enynols with sulfinic acids under blue LED irradiation allowed to access 3-(E-styryl)-derived benzofurans and benzothiophenes in moderate to good yields. The scope and limitations of the present strategies were successfully established using different classes of 1,6-enynols and sulfinic acids bearing various sensitive functional groups, yielding the desired products in a highly stereoselective fashion. Plausible mechanistic pathways were also proposed based on the current experimental and control experiments.
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Affiliation(s)
- Arram Haritha Kumari
- Department of Chemistry, University College of Science, Osmania University, Hyderabad, 500 007, India
| | - Jangam Jagadesh Kumar
- Department of Chemistry, University College of Science, Osmania University, Hyderabad, 500 007, India
| | - Nunavath Sharadha
- Department of Chemistry, University College of Science, Osmania University, Hyderabad, 500 007, India
| | - Gamidi Rama Krishna
- Centre for X-ray Crystallography, CSIR-National Chemical Laboratory, Pune, 411 008, India
| | - Raju Jannapu Reddy
- Department of Chemistry, University College of Science, Osmania University, Hyderabad, 500 007, India
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10
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Rulli F, Sanz-Liarte G, Roca P, Martínez N, Medina V, Puig de la Bellacasa R, Shafir A, Cuenca AB. From propenolysis to enyne metathesis: tools for expedited assembly of 4 a,8 a-azaboranaphthalene and extended polycycles with embedded BN. Chem Sci 2024; 15:5674-5680. [PMID: 38638215 PMCID: PMC11023045 DOI: 10.1039/d3sc06676b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2023] [Accepted: 03/02/2024] [Indexed: 04/20/2024] Open
Abstract
The synthesis of BN-containing molecules, which have an interesting isosteric relationship to their parent all-C cores, has drawn a great deal of attention as an avenue to alter and tune molecular function. Nevertheless, many cores with embedded BN are still hard to synthesize, and thus, further effort is required in this direction. Herein, we present an integrated approach to BN-containing polycycles rooted in an exceptionally clean B-N condensation of amines with a tri-allylborane. Having released propene as the only byproduct, the resulting BN precursors are seamlessly telescoped into BN-containing polycyclic cores via a set of additional methodologies, either developed here ad-hoc or applied for the first time for the synthesis of BN-cycles. As the "sharpening stone" of the process, BN-embedded naphthalene, which has previously only been obtained in low yield, can now be synthesized efficiently through propenolysis, ring-closing metathesis and a new high-yielding aromatization. As a more advanced application, an analogously obtained BN-containing bis-enyne is readily converted to BN-containing non-aromatic tetra-, penta- and hexacyclic structures via ring-closing enyne metathesis, followed by the Diels-Alder cycloaddition. The resulting air-sensitive structures are easily handled by preventive hydration (quaternization) of their B-N bridge; reverting this hydration restores the original Bsp2-Nsp2 structure. In the future, these structures may pave the way to BN-anthracenes and other π-extended BN-arenes.
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Affiliation(s)
- Federica Rulli
- BISi-Bonds/CRISOL Group, Dept. of Organic and Pharmaceutical Chemistry. Institut Químic de Sarrià, Universitat Ramon Llull Vía Augusta 390 08017 Barcelona Spain
| | - Guillem Sanz-Liarte
- BISi-Bonds Group, Dept. Química Biológica. Institut de Química Avançada de Catalunya, IQAC-CSIC C/Jordi Girona 20 08034 Barcelona Spain
| | - Pol Roca
- BISi-Bonds Group, Dept. Química Biológica. Institut de Química Avançada de Catalunya, IQAC-CSIC C/Jordi Girona 20 08034 Barcelona Spain
| | - Nina Martínez
- BISi-Bonds/CRISOL Group, Dept. of Organic and Pharmaceutical Chemistry. Institut Químic de Sarrià, Universitat Ramon Llull Vía Augusta 390 08017 Barcelona Spain
| | - Víctor Medina
- BISi-Bonds Group, Dept. Química Biológica. Institut de Química Avançada de Catalunya, IQAC-CSIC C/Jordi Girona 20 08034 Barcelona Spain
| | - Raimon Puig de la Bellacasa
- BISi-Bonds/CRISOL Group, Dept. of Organic and Pharmaceutical Chemistry. Institut Químic de Sarrià, Universitat Ramon Llull Vía Augusta 390 08017 Barcelona Spain
| | - Alexandr Shafir
- BISi-Bonds Group, Dept. Química Biológica. Institut de Química Avançada de Catalunya, IQAC-CSIC C/Jordi Girona 20 08034 Barcelona Spain
- Centro de Innovación en Química Avanzada (ORFEO-CINQA) Barcelona Spain
| | - Ana B Cuenca
- BISi-Bonds/CRISOL Group, Dept. of Organic and Pharmaceutical Chemistry. Institut Químic de Sarrià, Universitat Ramon Llull Vía Augusta 390 08017 Barcelona Spain
- Centro de Innovación en Química Avanzada (ORFEO-CINQA) Barcelona Spain
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11
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Liu W, Li W, Xu W, Wang M, Kong W. Nickel-catalyzed switchable arylative/endo-cyclization of 1,6-enynes. Nat Commun 2024; 15:2914. [PMID: 38575585 PMCID: PMC10995176 DOI: 10.1038/s41467-024-47200-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2023] [Accepted: 01/16/2024] [Indexed: 04/06/2024] Open
Abstract
Carbo- and heterocycles are frequently used as crucial scaffolds in natural products, fine chemicals, and biologically and pharmaceutically active compounds. Transition-metal-catalyzed cyclization of 1,6-enynes has emerged as a powerful strategy for constructing functionalized carbo- and heterocycles. Despite significant progress, the regioselectivity of alkyne functionalization is entirely substrate-dependent. And only exo-cyclization/cross-coupling products can be obtained, while endo-selective cyclization/cross-coupling remains elusive and still poses a formidable challenge. In this study, we disclose a nickel-catalyzed switchable arylation/cyclization of 1,6-enynes in which the nature of the ligand dictates the regioselectivity of alkyne arylation, while the electrophilic trapping reagents determine the selectivity of the cyclization mode. Specifically, using a commercially available 1,10-phenanthroline as a ligand facilitates trans-arylation/cyclization to obtain seven-membered ring products, while a 2-naphthyl-substituted bisbox ligand promotes cis-arylation/cyclization to access six-membered ring products. Diastereoselective cyclizations have also been developed for the synthesis of enantioenriched piperidines and azepanes, which are core structural elements of pharmaceuticals and natural products possessing important biological activities. Furthermore, experimental and density functional theory studies reveal that the regioselectivity of the alkyne arylation process is entirely controlled by the steric hindrance of the ligand; the reaction mechanism involves exo-cyclization followed by Dowd-Beckwith-type ring expansion to form endo-cyclization products.
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Affiliation(s)
- Wenfeng Liu
- The Institute for Advanced Studies (IAS), Wuhan University, Wuhan, 430072, China
| | - Wei Li
- The Institute for Advanced Studies (IAS), Wuhan University, Wuhan, 430072, China
| | - Weipeng Xu
- State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210023, China
| | - Minyan Wang
- State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210023, China.
| | - Wangqing Kong
- The Institute for Advanced Studies (IAS), Wuhan University, Wuhan, 430072, China.
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12
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Zhu J, Yang L, Liu H, Sun S, Li J, Zhang L, Sun H, Cheng M, Lin B, Liu Y. Syntheses of Tetracyclic Indoline Derivatives Via Gold(I)-Catalyzed Hydroamination/Cycloisomerization Cascade of 2-Ethynyltryptamides. J Org Chem 2024; 89:3331-3344. [PMID: 38363745 DOI: 10.1021/acs.joc.3c02784] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/18/2024]
Abstract
A gold(I)-catalyzed hydroamination/cycloisomerization cascade reaction was developed to yield indolizino[8,7-b]indole and indolo[2,3-a]-quinolizine derivatives from 2-ethynyltryptamides. The optimal conditions were determined by condition screening, and the functional group tolerances of these reactions were explored based on synthetic substrates. An insight into the explanation on the selectivity of the ring closure was obtained by density functional theory calculations. A plausible mechanism for the cascade reactions was proposed. Derivatization of the indolizino[8,7-b]indole and total synthesis of nauclefidine demonstrated the practicality of this strategy.
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Affiliation(s)
- Jiang Zhu
- Key Laboratory of Structure-Based Drug Design and Discovery of Ministry of Education, Shenyang Pharmaceutical University, Shenyang 110016, P. R. China
- Wuya College of Innovation, Shenyang Pharmaceutical University, Shenyang 110016, P. R. China
- Institute of Drug Research in Medicine Capital of China, Benxi 117000, P. R. China
| | - Lu Yang
- Key Laboratory of Structure-Based Drug Design and Discovery of Ministry of Education, Shenyang Pharmaceutical University, Shenyang 110016, P. R. China
- Wuya College of Innovation, Shenyang Pharmaceutical University, Shenyang 110016, P. R. China
- Institute of Drug Research in Medicine Capital of China, Benxi 117000, P. R. China
| | - Hairui Liu
- Key Laboratory of Structure-Based Drug Design and Discovery of Ministry of Education, Shenyang Pharmaceutical University, Shenyang 110016, P. R. China
- Wuya College of Innovation, Shenyang Pharmaceutical University, Shenyang 110016, P. R. China
- Institute of Drug Research in Medicine Capital of China, Benxi 117000, P. R. China
| | - Shitao Sun
- Key Laboratory of Structure-Based Drug Design and Discovery of Ministry of Education, Shenyang Pharmaceutical University, Shenyang 110016, P. R. China
- Wuya College of Innovation, Shenyang Pharmaceutical University, Shenyang 110016, P. R. China
- Institute of Drug Research in Medicine Capital of China, Benxi 117000, P. R. China
| | - Jiaji Li
- Key Laboratory of Structure-Based Drug Design and Discovery of Ministry of Education, Shenyang Pharmaceutical University, Shenyang 110016, P. R. China
- Wuya College of Innovation, Shenyang Pharmaceutical University, Shenyang 110016, P. R. China
- Institute of Drug Research in Medicine Capital of China, Benxi 117000, P. R. China
| | - Lianjie Zhang
- Key Laboratory of Structure-Based Drug Design and Discovery of Ministry of Education, Shenyang Pharmaceutical University, Shenyang 110016, P. R. China
- Wuya College of Innovation, Shenyang Pharmaceutical University, Shenyang 110016, P. R. China
- Institute of Drug Research in Medicine Capital of China, Benxi 117000, P. R. China
| | - Hanyang Sun
- Key Laboratory of Structure-Based Drug Design and Discovery of Ministry of Education, Shenyang Pharmaceutical University, Shenyang 110016, P. R. China
- Wuya College of Innovation, Shenyang Pharmaceutical University, Shenyang 110016, P. R. China
- Institute of Drug Research in Medicine Capital of China, Benxi 117000, P. R. China
| | - Maosheng Cheng
- Key Laboratory of Structure-Based Drug Design and Discovery of Ministry of Education, Shenyang Pharmaceutical University, Shenyang 110016, P. R. China
- Institute of Drug Research in Medicine Capital of China, Benxi 117000, P. R. China
| | - Bin Lin
- Key Laboratory of Structure-Based Drug Design and Discovery of Ministry of Education, Shenyang Pharmaceutical University, Shenyang 110016, P. R. China
- Wuya College of Innovation, Shenyang Pharmaceutical University, Shenyang 110016, P. R. China
- Institute of Drug Research in Medicine Capital of China, Benxi 117000, P. R. China
| | - Yongxiang Liu
- Key Laboratory of Structure-Based Drug Design and Discovery of Ministry of Education, Shenyang Pharmaceutical University, Shenyang 110016, P. R. China
- Wuya College of Innovation, Shenyang Pharmaceutical University, Shenyang 110016, P. R. China
- Institute of Drug Research in Medicine Capital of China, Benxi 117000, P. R. China
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13
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Zhu X, Li Y, Luo H, Li J, Hua Y, Liu G, Li L, Liu R. Propargylic Dialkyl Effect for Cyclobutene Formation through Ir(III)-Catalyzed Cycloisomerization of 1,6-Enynes. Org Lett 2024; 26:966-970. [PMID: 38270400 DOI: 10.1021/acs.orglett.3c04330] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2024]
Abstract
The propargylic dialkyl effect (PDAE) has a significant impact on the cyclization reaction of enynes, partly reflected in changing the types of products. Herein, we described the influence of the propargylic dialkyl effect on the Ir(III)-catalyzed cycloisomerization of 1,6-enynes to provide strained cyclobutenes. A series of substituted 1,6-enynes were proved to be excellent substrate candidates in the presence of [Cp*IrCl2]2 in toluene. Mechanistic investigation, based on deuterium labeling experiments and control experiments, indicated that the propargylic dialkyl effect might boost C(sp)-H activation by preventing the coordination of active iridium species to the C(sp)≡C(sp) bond of enynes. This finding contributes to the fundamental understanding of enyne cyclization reactions and offers valuable insight into the propargylic dialkyl effect.
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Affiliation(s)
- Xuanyu Zhu
- Shanghai Frontiers Science Center of Biomimetic Catalysis, Joint Laboratory of International Cooperation of Resource Chemistry of Ministry of Education, Shanghai Normal University, Shanghai 200234, China
| | - Yi Li
- Shanghai Frontiers Science Center of Biomimetic Catalysis, Joint Laboratory of International Cooperation of Resource Chemistry of Ministry of Education, Shanghai Normal University, Shanghai 200234, China
| | - Hongtao Luo
- Shanghai Frontiers Science Center of Biomimetic Catalysis, Joint Laboratory of International Cooperation of Resource Chemistry of Ministry of Education, Shanghai Normal University, Shanghai 200234, China
| | - Jing Li
- Shanghai Frontiers Science Center of Biomimetic Catalysis, Joint Laboratory of International Cooperation of Resource Chemistry of Ministry of Education, Shanghai Normal University, Shanghai 200234, China
| | - Yuhui Hua
- Shanghai Frontiers Science Center of Biomimetic Catalysis, Joint Laboratory of International Cooperation of Resource Chemistry of Ministry of Education, Shanghai Normal University, Shanghai 200234, China
| | - Guohua Liu
- Shanghai Frontiers Science Center of Biomimetic Catalysis, Joint Laboratory of International Cooperation of Resource Chemistry of Ministry of Education, Shanghai Normal University, Shanghai 200234, China
| | - Lingling Li
- Instrumental Analysis Center of Shanghai Jiao Tong University, Shanghai 200240, China
| | - Rui Liu
- Shanghai Frontiers Science Center of Biomimetic Catalysis, Joint Laboratory of International Cooperation of Resource Chemistry of Ministry of Education, Shanghai Normal University, Shanghai 200234, China
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14
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Babu US, Kotipalli R, Nanubolu JB, Reddy MS. Pd-Catalyzed Vicinal Intermolecular Annulations of Iodoarenes, Indoles, and Carbazoles with Enynes. Chemistry 2024; 30:e202302788. [PMID: 37929623 DOI: 10.1002/chem.202302788] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2023] [Revised: 11/03/2023] [Accepted: 11/06/2023] [Indexed: 11/07/2023]
Abstract
Reaching the formidable C-H corners has been one of the top priorities of organic chemists in the recent past. This prompted us to disclose herein a vicinal annulation of 2-iodo benzoates, indoles, and carbazoles with N-embedded 1,6-enynes through 7-/8-membered palladacycles. The relay does not require the assistance of any directing group, leading to multicyclic scaffolds, which are readily diversified to an array of adducts (with new functional tethers and/or three contiguous stereocenters), in which we showcase a rare benzylic mono-oxygenation.
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Affiliation(s)
- Undamatla Suri Babu
- Department of Oraganic Synthesis & Process Chemistry, CSIR-Indian Institute of Chemical Technology, Hyderabad, 500007, India
- Academy of Scientific and Innovative Research, Ghaziabad, 201002, India
| | - Ramesh Kotipalli
- Department of Oraganic Synthesis & Process Chemistry, CSIR-Indian Institute of Chemical Technology, Hyderabad, 500007, India
- Academy of Scientific and Innovative Research, Ghaziabad, 201002, India
| | - Jagadeesh Babu Nanubolu
- Department of Oraganic Synthesis & Process Chemistry, CSIR-Indian Institute of Chemical Technology, Hyderabad, 500007, India
- Jagadeesh Babu Nanubolu, Analytical Department, CSIR-IICT, Hyderabad, 500007, India
| | - Maddi Sridhar Reddy
- Department of Oraganic Synthesis & Process Chemistry, CSIR-Indian Institute of Chemical Technology, Hyderabad, 500007, India
- Academy of Scientific and Innovative Research, Ghaziabad, 201002, India
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15
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Li Q, Li J, Zhang J, Wu S, Zhang Y, Lin A, Yao H. Enantioselective Synthesis of Bicyclo[3.2.1]octadienes via Palladium-Catalyzed Intramolecular Alkene-Alkyne Coupling Reaction. Angew Chem Int Ed Engl 2023:e202313404. [PMID: 37921257 DOI: 10.1002/anie.202313404] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2023] [Revised: 10/31/2023] [Accepted: 11/02/2023] [Indexed: 11/04/2023]
Abstract
Bicyclo[3.2.1]octadiene compounds and derivatives exist in a number of natural products and bioactive compounds. Nevertheless, catalytic enantioselective protocols for the synthesis of these skeletons have not been disclosed. Herein we reported a palladium-catalyzed asymmetric intramolecular alkene-alkyne coupling of alkyne-tethered cyclopentenes, affording a library of enantionenriched bicyclo[3.2.1]octadienes in excellent yields and enantioselectivities (mostly >99 % ee). Moreover, the products could undergo an unusual iodination-induced 1,2-acyl migration, forming iodinated bicyclo[3.2.1]octadienes with three vicinal stereocenters. The enone and isolated olefin motifs embedded in the products provide useful handles for downstream elaboration.
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Affiliation(s)
- Qiuyu Li
- State Key Laboratory of Natural Medicines (SKLNM), Department of Medicinal Chemistry, School of Pharmacy, China Pharmaceutical University, Nanjing, 210009, P. R. China
| | - Jiajia Li
- State Key Laboratory of Natural Medicines (SKLNM), Department of Medicinal Chemistry, School of Pharmacy, China Pharmaceutical University, Nanjing, 210009, P. R. China
| | - Jie Zhang
- State Key Laboratory of Natural Medicines (SKLNM), Department of Medicinal Chemistry, School of Pharmacy, China Pharmaceutical University, Nanjing, 210009, P. R. China
| | - Shu Wu
- State Key Laboratory of Natural Medicines (SKLNM), Department of Medicinal Chemistry, School of Pharmacy, China Pharmaceutical University, Nanjing, 210009, P. R. China
| | - Yu Zhang
- State Key Laboratory of Natural Medicines (SKLNM), Department of Medicinal Chemistry, School of Pharmacy, China Pharmaceutical University, Nanjing, 210009, P. R. China
| | - Aijun Lin
- State Key Laboratory of Natural Medicines (SKLNM), Department of Medicinal Chemistry, School of Pharmacy, China Pharmaceutical University, Nanjing, 210009, P. R. China
| | - Hequan Yao
- State Key Laboratory of Natural Medicines (SKLNM), Department of Medicinal Chemistry, School of Pharmacy, China Pharmaceutical University, Nanjing, 210009, P. R. China
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16
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Hou F, Ning Y, Song L, Tan Z, Yang J, Liu Z, Chen FE. Rhodium-Catalyzed Asymmetric Hydroboration/Cyclization of 1,6-Enynes Enabled by Spirosiladiphosphine Ligands: Constructing Chiral Five-Membered Rings with a Boron Handle. Org Lett 2023; 25:7810-7815. [PMID: 37883235 DOI: 10.1021/acs.orglett.3c02979] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2023]
Abstract
A rhodium-catalyzed enantioselective hydroboration/cyclization reaction of 1,6-enynes is achieved by employing a spirosiladiphosphine ligand. The process allows the synthesis of five-membered hetero- and carbocycles bearing a boron handle with high levels of activity and selectivity. Various enynes and organoboranes (HBdan, HBpin, HBmp, and HBamm) have been accommodated, and enynes containing terminal alkynes have been integrated into the process for the first time. The high yields and selectivities of the transformation highlight the synthetic utility of these novel spirosiladiphosphine ligands.
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Affiliation(s)
- Fei Hou
- Engineering Center of Catalysis and Synthesis for Chiral Molecules, Fudan University, Shanghai 200433, China
- Shanghai Engineering Center of Industrial Catalysis for Chiral Drugs, Shanghai 200433, China
| | - Yingtang Ning
- Engineering Center of Catalysis and Synthesis for Chiral Molecules, Fudan University, Shanghai 200433, China
- Shanghai Engineering Center of Industrial Catalysis for Chiral Drugs, Shanghai 200433, China
| | - Lili Song
- Engineering Center of Catalysis and Synthesis for Chiral Molecules, Fudan University, Shanghai 200433, China
- Shanghai Engineering Center of Industrial Catalysis for Chiral Drugs, Shanghai 200433, China
| | - Zequn Tan
- Engineering Center of Catalysis and Synthesis for Chiral Molecules, Fudan University, Shanghai 200433, China
- Shanghai Engineering Center of Industrial Catalysis for Chiral Drugs, Shanghai 200433, China
| | - Jiawen Yang
- Engineering Center of Catalysis and Synthesis for Chiral Molecules, Fudan University, Shanghai 200433, China
- Shanghai Engineering Center of Industrial Catalysis for Chiral Drugs, Shanghai 200433, China
| | - Zhigang Liu
- Engineering Center of Catalysis and Synthesis for Chiral Molecules, Fudan University, Shanghai 200433, China
- Shanghai Engineering Center of Industrial Catalysis for Chiral Drugs, Shanghai 200433, China
| | - Fen-Er Chen
- Engineering Center of Catalysis and Synthesis for Chiral Molecules, Fudan University, Shanghai 200433, China
- College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang 330022, China
- Shanghai Engineering Center of Industrial Catalysis for Chiral Drugs, Shanghai 200433, China
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17
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Vasev YA, Nasibullina ER, Makarov AS, Uchuskin MG. Interrupted Furan-Yne Cyclization: Access to Unsaturated Dicarbonyl Compounds and Their Subsequent Transformation into Functionalized Pyridazines. Org Lett 2023; 25:7780-7785. [PMID: 37862046 DOI: 10.1021/acs.orglett.3c02794] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2023]
Abstract
The key carbenoid intermediate of transition-metal-catalyzed furan-yne cyclization in Hashmi phenol synthesis could be efficiently intercepted with water under the developed reaction conditions in order to provide access to functionalized unsaturated dicarbonyl compounds that might serve as convenient precursors for the straightforward synthesis of annulated pyridazines.
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Affiliation(s)
- Yury A Vasev
- Department of Chemistry, Perm State University, Bukireva 15, 614990 Perm, Russia
| | | | - Anton S Makarov
- Department of Chemistry, Perm State University, Bukireva 15, 614990 Perm, Russia
| | - Maxim G Uchuskin
- Department of Chemistry, Perm State University, Bukireva 15, 614990 Perm, Russia
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18
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Xiang S, Ni Q, Liu Q, Zhou S, Wang H, Zhou Y, Liu Y. Approach to Access Benzo[ j]phenanthridinones from 1,7-Enynes and Aryldiazonium Salts via a Domino Radical Relay Process Enabled by a P/N-Heteroleptic Cu(I)-Photosensitizer. J Org Chem 2023; 88:13248-13261. [PMID: 37616100 DOI: 10.1021/acs.joc.3c01509] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/25/2023]
Abstract
A mild approach for the synthesis of benzo[j]phenanthridin-6(5H)-one derivatives from 1,7-enynes and aryldiazonium salts has been successfully developed involving a domino radical relay process enabled by a heteroleptic Cu(I)-photosensitizer under visible-light-driven photocatalytic conditions. Mechanistic studies disclosed that the oxidative quenching of the excited state of PS 4 with aryldiazonium salts via an SET process generated aryl radicals, which could play a radical initiator-terminator dual role within the whole radical relay process, namely, at the initial step acting as a radical donor to trigger the radical addition to the olefin moieties of 1,7-enynes while at the final stage serving as a radical acceptor to complete the cyclization.
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Affiliation(s)
- Siwei Xiang
- State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310014, People's Republic of China
| | - Qibo Ni
- State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310014, People's Republic of China
| | - Qian Liu
- State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310014, People's Republic of China
| | - Sicheng Zhou
- State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310014, People's Republic of China
| | - Huihui Wang
- State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310014, People's Republic of China
| | - Yan Zhou
- State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310014, People's Republic of China
| | - Yunkui Liu
- State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310014, People's Republic of China
- Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education, Hangzhou Normal University, Hangzhou 311121, China
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19
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Wei J, Xing Y, Ye X, Nguyen B, Wojtas L, Hong X, Shi X. Gold-Catalyzed Amine Cascade Addition to Diyne-Ene: Enantioselective Synthesis of 1,2-Dihydropyridines. Angew Chem Int Ed Engl 2023; 62:e202305409. [PMID: 37167070 PMCID: PMC10524696 DOI: 10.1002/anie.202305409] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2023] [Revised: 05/10/2023] [Accepted: 05/11/2023] [Indexed: 05/13/2023]
Abstract
With the well-documented chemical and biological applications, piperidine and pyridine are among the most important N-heterocycles, and a new synthetic strategy, especially one with an alternative bond-forming design, is of general interest. Using the gold-catalyzed intermolecular condensation of amine and diyne-ene, we report herein the first example of enantioselective 1,2-dihydropyridine synthesis through a formal [3+2+1] fashion (up to 95 % yield, up to 99 % e.e.).
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Affiliation(s)
- Jingwen Wei
- Department of Chemistry, University of South Florida, FL 33620, Tampa, USA
| | - Yangyang Xing
- Center of Chemistry for Frontier Technologies, Department of Chemistry, Zhejiang University, 310027, Hangzhou, China
| | - Xiaohan Ye
- Department of Chemistry, University of South Florida, FL 33620, Tampa, USA
| | - Bao Nguyen
- Department of Chemistry, University of South Florida, FL 33620, Tampa, USA
| | - Lukasz Wojtas
- Department of Chemistry, University of South Florida, FL 33620, Tampa, USA
| | - Xin Hong
- Center of Chemistry for Frontier Technologies, Department of Chemistry, Zhejiang University, 310027, Hangzhou, China
| | - Xiaodong Shi
- Department of Chemistry, University of South Florida, FL 33620, Tampa, USA
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20
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Yang Z, Yu Z, He Y, Feng W, Zhang Y, Wang J, Kong X, Yang CH. Rh-Catalyzed Borylative Cyclization of Acrylate-Containing 1,6-Enynes. Org Lett 2023. [PMID: 37486621 DOI: 10.1021/acs.orglett.3c02154] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/25/2023]
Abstract
A Rh-catalyzed regioselective, stereoselective carbocyclization/borylation of acrylate-containing 1,6-enynes was described, which offers a general and practical method for constructing versatile and densely functionalized pyrrolidines with the (Z) geometry or the uncommon (E) geometry at the double bond with different substituents of the alkyne, with sterically hindered and conjugative aryl groups favoring the latter, featuring a tetrasubstituted vinyl boronate, containing an all-carbon quaternary stereocenter.
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Affiliation(s)
- Zhantao Yang
- Henan Key Laboratory of New Optoelectronic Functional Materials, College of Chemistry and Chemical Engineering, Anyang Normal University, 436 Xian'ge Road, Anyang 455000, People's Republic of China
| | - Zhiqiang Yu
- Henan Key Laboratory of New Optoelectronic Functional Materials, College of Chemistry and Chemical Engineering, Anyang Normal University, 436 Xian'ge Road, Anyang 455000, People's Republic of China
| | - Yulin He
- Henan Key Laboratory of New Optoelectronic Functional Materials, College of Chemistry and Chemical Engineering, Anyang Normal University, 436 Xian'ge Road, Anyang 455000, People's Republic of China
| | - Wei Feng
- Henan Key Laboratory of New Optoelectronic Functional Materials, College of Chemistry and Chemical Engineering, Anyang Normal University, 436 Xian'ge Road, Anyang 455000, People's Republic of China
| | - Yinchao Zhang
- Henan Key Laboratory of New Optoelectronic Functional Materials, College of Chemistry and Chemical Engineering, Anyang Normal University, 436 Xian'ge Road, Anyang 455000, People's Republic of China
| | - Junjie Wang
- Henan Key Laboratory of New Optoelectronic Functional Materials, College of Chemistry and Chemical Engineering, Anyang Normal University, 436 Xian'ge Road, Anyang 455000, People's Republic of China
| | - Xiangtao Kong
- Henan Key Laboratory of New Optoelectronic Functional Materials, College of Chemistry and Chemical Engineering, Anyang Normal University, 436 Xian'ge Road, Anyang 455000, People's Republic of China
| | - Chun-Hua Yang
- Henan Key Laboratory of New Optoelectronic Functional Materials, College of Chemistry and Chemical Engineering, Anyang Normal University, 436 Xian'ge Road, Anyang 455000, People's Republic of China
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21
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Lynch DM, Nolan MD, Williams C, Van Dalsen L, Calvert SH, Dénès F, Trujillo C, Scanlan EM. Traceless Thioacid-Mediated Radical Cyclization of 1,6-Dienes. J Org Chem 2023. [PMID: 37418624 PMCID: PMC10367065 DOI: 10.1021/acs.joc.3c00824] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/09/2023]
Abstract
Five-membered ring systems are ubiquitous throughout natural products and synthetic therapeutics, and thus, efficient methods to access this essential scaffold are required. Herein, we report the thioacid-mediated, 5-exo-trig cyclization of various 1,6-dienes, with high yields of up to 98%. The labile thioester functionality can be exploited to generate a free thiol residue which can be used as a functional handle or removed entirely to provide the traceless cyclized product.
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Affiliation(s)
- Dylan M Lynch
- Trinity Biomedical Sciences Institute, Trinity College Dublin, 152-160 Pearse Street, Dublin 2, Ireland
| | - Mark D Nolan
- Trinity Biomedical Sciences Institute, Trinity College Dublin, 152-160 Pearse Street, Dublin 2, Ireland
| | - Conor Williams
- Trinity Biomedical Sciences Institute, Trinity College Dublin, 152-160 Pearse Street, Dublin 2, Ireland
| | - Leendert Van Dalsen
- Trinity Biomedical Sciences Institute, Trinity College Dublin, 152-160 Pearse Street, Dublin 2, Ireland
| | - Susannah H Calvert
- Trinity Biomedical Sciences Institute, Trinity College Dublin, 152-160 Pearse Street, Dublin 2, Ireland
| | - Fabrice Dénès
- Université de Nantes, CEISAM UMR CNRS 6230 UFR des Sciences et des Techniques, 2 rue de la Houssinière BP, 92208 - 44322 Cedex 3 Nantes, France
| | - Cristina Trujillo
- Trinity Biomedical Sciences Institute, Trinity College Dublin, 152-160 Pearse Street, Dublin 2, Ireland
| | - Eoin M Scanlan
- Trinity Biomedical Sciences Institute, Trinity College Dublin, 152-160 Pearse Street, Dublin 2, Ireland
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22
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Liang G, Anderson EA. Sequencing palladium-catalyzed cycloisomerization cascades in a synthesis of the gelsemine core. Chem Sci 2023; 14:6970-6974. [PMID: 37389268 PMCID: PMC10306092 DOI: 10.1039/d3sc01353g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2023] [Accepted: 06/05/2023] [Indexed: 07/01/2023] Open
Abstract
Transition metal-catalyzed cycloisomerization is a powerful strategy for the construction of cyclic organic molecules, and the use of palladium catalysts can deliver a wide range of monocyclic and bicyclic products. However, applications of cycloisomerizations in complex target synthesis in which more than one cycloisomerization process is deployed in a cascade context are rare. Here we report investigations of the relative rates of two different types of ene-ynamide cycloisomerization that form fused and spirocyclic rings, and use of these results to design a sequence-controlled cascade cycloisomerization that prepares the tetracyclic core of gelsemine in a single step. Crucial to this work was an evaluation of the kinetics of each cycloisomerization in competition experiments, which revealed a key influence of the ynamide electron-withdrawing group on the cycloisomerization reaction.
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Affiliation(s)
- Guoduan Liang
- Chemistry Research Laboratory, Department of Chemistry, University of Oxford 12 Mansfield Road Oxford OX1 3TA UK
| | - Edward A Anderson
- Chemistry Research Laboratory, Department of Chemistry, University of Oxford 12 Mansfield Road Oxford OX1 3TA UK
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23
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Chen JQ, Luo X, Chen M, Chen Y, Wu J. Visible-Light-Induced 1,7-Enyne Dicyclization: Synthesis of Ester-Substituted Benzo[ j]phenanthridines. Org Lett 2023; 25:1978-1983. [PMID: 36912498 DOI: 10.1021/acs.orglett.3c00544] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/14/2023]
Abstract
A novel alkoxycarbonyl-radical-triggered cascade cyclization of 1,7-enynes, with alkyloxalyl chlorides as the ester units, for the synthesis of benzo[j]phenanthridines is described. The reaction conditions exhibit excellent compatibility with a broad range of alkoxycarbonyl radical sources and realize the installation of an ester group in the polycyclic compound. This radical cascade cyclization reaction features excellent functional group tolerance, mild reaction conditions, and good to excellent yields.
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Affiliation(s)
- Jian-Qiang Chen
- School of Pharmaceutical and Chemical Engineering & Institute for Advanced Studies, Taizhou University, Taizhou 318000, China
| | - Xiangxiang Luo
- School of Pharmaceutical and Chemical Engineering & Institute for Advanced Studies, Taizhou University, Taizhou 318000, China
| | - Meiling Chen
- School of Pharmaceutical and Chemical Engineering & Institute for Advanced Studies, Taizhou University, Taizhou 318000, China
| | - Yi Chen
- School of Pharmaceutical and Chemical Engineering & Institute for Advanced Studies, Taizhou University, Taizhou 318000, China
| | - Jie Wu
- School of Pharmaceutical and Chemical Engineering & Institute for Advanced Studies, Taizhou University, Taizhou 318000, China
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24
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Gao S, Wang C, Yang J, Zhang J. Cobalt-catalyzed enantioselective intramolecular reductive cyclization via electrochemistry. Nat Commun 2023; 14:1301. [PMID: 36894526 PMCID: PMC9998880 DOI: 10.1038/s41467-023-36704-9] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2022] [Accepted: 02/10/2023] [Indexed: 03/11/2023] Open
Abstract
Transition-metal catalyzed asymmetric cyclization of 1,6-enynes has emerged as a powerful method for the construction of carbocycles and heterocycles. However, very rare examples worked under electrochemical conditions. We report herein a Co-catalyzed enantioselective intramolecular reductive coupling of enynes via electrochemistry using H2O as hydride source. The products were obtained in good yields with high regio- and enantioselectivities. It represents the rare progress on the cobalt-catalyzed enantioselective transformation via electrochemistry with a general substrate scope. DFT studies explored the possible reaction pathways and revealed that the oxidative cyclization of enynes by LCo(I) is more favorable than oxidative addition of H2O or other pathways.
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Affiliation(s)
- Shiquan Gao
- Department of Chemistry, Fudan University, 2005 Songhu Road, Shanghai, 200438, China
| | - Chen Wang
- Zhejiang Key Laboratory of Alternative Technologies for Fine Chemical Process, Shaoxing University, Shaoxing, 312000, China
| | - Junfeng Yang
- Department of Chemistry, Fudan University, 2005 Songhu Road, Shanghai, 200438, China. .,Fudan Zhangjiang Institute, Shanghai, 201203, China.
| | - Junliang Zhang
- Department of Chemistry, Fudan University, 2005 Songhu Road, Shanghai, 200438, China.
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25
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Reddy RJ, Kumari AH, Krishna GR. Unified Radical Sulfonylative-Annulation of 1,6-Enynols with Sodium Sulfinates: A Modular Synthesis of 2,3-Disubstituted Benzoheteroles. J Org Chem 2023; 88:1635-1648. [PMID: 36650618 DOI: 10.1021/acs.joc.2c02696] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
Benzoheteroles are valuable scaffolds in medicinal chemistry, but the direct synthesis of 3-vinyl benzoheterole analogues remains unexplored. A rationally designed new class of 1,6-enyne-containing propargylic alcohols has been prepared for the modular synthesis of 3-alkenyl benzoheteroles. Ag-catalyzed cascade radical sulfonylative-cycloannulation of 1,6-enynols with sodium sulfinates is realized to access a wide variety of 2,3-disubstituted benzoheteroles in good to high yields. Moreover, a three-component coupling of 1,6-enynols, aryldiazonium salts, and Na2S2O5 (as an SO2 surrogate) has been achieved to deliver benzoheterole derivatives in moderate to good yields. Of note, a scalable reaction and late-stage synthetic transformations were successfully demonstrated. A plausible mechanism is also presented based on the existing experimental results and control experiments.
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Affiliation(s)
- Raju Jannapu Reddy
- Department of Chemistry, University College of Science, Osmania University, Hyderabad 500 007, India
| | - Arram Haritha Kumari
- Department of Chemistry, University College of Science, Osmania University, Hyderabad 500 007, India
| | - Gamidi Rama Krishna
- Centre for X-ray Crystallography, CSIR-National Chemical Laboratory, Pune 411 008, India
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26
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Kang TM, Wu YW, Zheng WS, Zhang XH, Zhang XG. The halogensulfonylative cyclizations of 1,6-enynes with sodium sulfinate/TBAX for the regioselective synthesis of tetrahydropyridines. Tetrahedron 2023. [DOI: 10.1016/j.tet.2023.133339] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/02/2023]
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27
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Dong M, Qi L, Qian J, Yu S, Tong X. Pd(0)-Catalyzed Asymmetric 7- Endo Hydroacyloxylative Cyclization of 1,6-Enyne Enabled by an Anion Ligand-Directed Strategy. J Am Chem Soc 2023; 145:1973-1981. [PMID: 36638241 DOI: 10.1021/jacs.2c12756] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
Despite diversity in reaction mechanisms, the palladium-catalyzed cyclization of 1,6-enyne generally proceeds in a 5-exo manner. Herein, we report the development of a Pd(0)-catalyzed hydroacyloxylative cyclization of 1,6-enyne in either 7-endo-trig or 6-exo-trig fashion when paired with an appropriate dihaloacetic acid reactant, such as F2HCCO2H and Cl2HCCO2H. Using the combination of Pd2(dba)3 and a chiral phosphine ligand, the hydroacyloxylative cyclization of 1,6-enyne bearing a 1,1-disubstituted alkene moiety readily gives highly enantiopure seven-membered heterocycles while the reaction of those having a 1,2-disubstituted alkene affords six-membered rings with moderate enantioselectivity. Preliminary experimental studies suggest a reaction mechanism featuring an unusual E-to-Z vinyl-Pd(II) isomerization and alkene trans-oxypalladation, which is proven to be governed by the rationally selected carboxylate.
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Affiliation(s)
- Ming Dong
- School of Pharmaceutical and Chemical Engineering & Institute for Advanced Studies, Taizhou University, Taizhou 318000, Zhejiang, China.,School of Petrochemical Engineering, Changzhou University, Gehu Road, Changzhou 213164, China
| | - Linjun Qi
- School of Pharmaceutical and Chemical Engineering & Institute for Advanced Studies, Taizhou University, Taizhou 318000, Zhejiang, China
| | - Jinlong Qian
- School of Pharmaceutical and Chemical Engineering & Institute for Advanced Studies, Taizhou University, Taizhou 318000, Zhejiang, China
| | - Shuling Yu
- School of Pharmaceutical and Chemical Engineering & Institute for Advanced Studies, Taizhou University, Taizhou 318000, Zhejiang, China
| | - Xiaofeng Tong
- School of Pharmaceutical and Chemical Engineering & Institute for Advanced Studies, Taizhou University, Taizhou 318000, Zhejiang, China.,School of Petrochemical Engineering, Changzhou University, Gehu Road, Changzhou 213164, China
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28
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Hou SH, Yu X, Zhang R, Wagner C, Dong G. Rhodium-Catalyzed Diastereo- and Enantioselective Divergent Annulations between Cyclobutanones and 1,5-Enynes: Rapid Construction of Complex C(sp 3)-Rich Scaffolds. J Am Chem Soc 2022; 144:22159-22169. [PMID: 36399332 PMCID: PMC10630065 DOI: 10.1021/jacs.2c09814] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Given the emerging demand to "escape from flatland" for drug discovery, synthetic methods that can efficiently construct complex three-dimensional structures with multi-stereocenters become increasingly valuable. Here, we describe the development of Rh(I)-catalyzed intramolecular annulations between cyclobutanones and 1,5-enyne groups to construct complex C(sp3)-rich scaffolds. Divergent reactivities are realized with different catalysts, and excellent diastereo- and enantioselectivity have been achieved. The use of (R)-H8-binap as the ligand favors forming the bis-bicyclic scaffolds with multiple quaternary stereocenters, while the (R)-segphos ligand prefers to generate the tetrahydro-azapinone products. Owing to the versatile reactivity of ketone moieties, these C(sp3)-rich scaffolds can be further functionalized. Experimental and computational mechanistic studies support a reaction pathway involving enyne-cyclometallation, 1,2-carbonyl addition, and then β-carbon elimination; the divergent reactivities are dictated by a product-determining Rh-alkyl migratory insertion step.
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Affiliation(s)
- Si-Hua Hou
- Department of Chemistry, University of Chicago, Chicago, Illinois 60637, United States
| | - Xuan Yu
- Department of Chemistry, University of Chicago, Chicago, Illinois 60637, United States
| | - Rui Zhang
- Department of Chemistry, University of Chicago, Chicago, Illinois 60637, United States
| | - Cole Wagner
- Department of Chemistry, University of Chicago, Chicago, Illinois 60637, United States
| | - Guangbin Dong
- Department of Chemistry, University of Chicago, Chicago, Illinois 60637, United States
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29
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Chen Z, Li YF, Tan SZ, Ouyang Q, Chen ZC, Du W, Chen YC. Formal nucleophilic pyrrolylmethylation via palladium-based auto-tandem catalysis: switchable regiodivergent synthesis and remote chirality transfer. Chem Sci 2022; 13:12433-12439. [PMID: 36349271 PMCID: PMC9628985 DOI: 10.1039/d2sc05210e] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2022] [Accepted: 10/05/2022] [Indexed: 09/10/2023] Open
Abstract
Although nucleophilic benzylation-type reaction to introduce various aromatic systems into molecules has been widely explored, the related pyrrolylmethylation version remains to be disclosed. Reported herein is a palladium-catalysed multiple auto-tandem reaction between N-Ts propargylamines, allyl carbonates and aldimines in the presence of an acid, proceeding through sequential allylic amination, cycloisomerisation, vinylogous addition and aromatisation steps. A diversity of formal pyrrolylmethylated amine products were finally furnished efficiently. In addition, switchable regiodivergent 3-pyrrolylmethylation and 4-pyrrolylmethylation were realised by tuning catalytic conditions. Moreover, remote chirality transfer with readily available enantioenriched starting materials was well achieved with an achiral ligand, relying on diastereoselective generation of η2-Pd(0) complexes between Pd(0) and chiral 1,3-diene intermediates in the key vinylogous addition step. A few control experiments were conducted to elucidate the palladium-involved tandem reaction and regiodivergent synthesis.
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Affiliation(s)
- Zhi Chen
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University Chengdu 610041 China +86 28 85502609
| | - Yu-Fan Li
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University Chengdu 610041 China +86 28 85502609
| | - Shun-Zhong Tan
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University Chengdu 610041 China +86 28 85502609
| | - Qin Ouyang
- College of Pharmacy, Third Military Medical University Shapingba Chongqing 400038 China
| | - Zhi-Chao Chen
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University Chengdu 610041 China +86 28 85502609
| | - Wei Du
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University Chengdu 610041 China +86 28 85502609
| | - Ying-Chun Chen
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University Chengdu 610041 China +86 28 85502609
- College of Pharmacy, Third Military Medical University Shapingba Chongqing 400038 China
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30
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Zhang Y, Wang YJ, Zou Q, Liu XY, Chen Z. Two Divergent Enyne Cycloisomerization Routes Mediated by Monoallenylidene Pd(II) Catalysts. Org Lett 2022; 24:8153-8157. [DOI: 10.1021/acs.orglett.2c03205] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Yuan Zhang
- Department of Chemistry, Renmin University of China, 59 Zhongguancun Street, Haidian District, Beijing 100872, China
| | - Yu-Jiang Wang
- Department of Chemistry, Renmin University of China, 59 Zhongguancun Street, Haidian District, Beijing 100872, China
| | - Qiang Zou
- Department of Chemistry, Renmin University of China, 59 Zhongguancun Street, Haidian District, Beijing 100872, China
| | - Xiao-Yu Liu
- Department of Chemistry, Renmin University of China, 59 Zhongguancun Street, Haidian District, Beijing 100872, China
| | - Zili Chen
- Department of Chemistry, Renmin University of China, 59 Zhongguancun Street, Haidian District, Beijing 100872, China
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31
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Virumbrales C, El-Remaily MAEAAA, Suárez-Pantiga S, Fernández-Rodríguez MA, Rodríguez F, Sanz R. Gold(I) Catalysis Applied to the Stereoselective Synthesis of Indeno[2,1- b]thiochromene Derivatives and Seleno Analogues. Org Lett 2022; 24:8077-8082. [DOI: 10.1021/acs.orglett.2c03411] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Cintia Virumbrales
- Área de Química Orgánica, Departamento de Química, Facultad de Ciencias, Universidad de Burgos, Pza. Misael Bañuelos s/n, 09001 Burgos, Spain
| | | | - Samuel Suárez-Pantiga
- Área de Química Orgánica, Departamento de Química, Facultad de Ciencias, Universidad de Burgos, Pza. Misael Bañuelos s/n, 09001 Burgos, Spain
| | - Manuel A. Fernández-Rodríguez
- Facultad de Farmacia, Departamento de Química Orgánica y Química Inorgánica, Instituto de Investigación Química “Andrés M. del Río” (IQAR), Campus Científico-Tecnológico, Universidad de Alcalá (IRYCIS), Autovía A-II, Km 33.1, 28805 Alcalá de Henares, Spain
| | - Félix Rodríguez
- Departamento de Química Orgánica e Inorgánica, Facultad de Química, Universidad de Oviedo, C/Julián Clavería, 8, 33006 Oviedo, Spain
| | - Roberto Sanz
- Área de Química Orgánica, Departamento de Química, Facultad de Ciencias, Universidad de Burgos, Pza. Misael Bañuelos s/n, 09001 Burgos, Spain
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32
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Tang J, Zhang L, Wu W, Yang S, Jiang H. Palladium‐Catalyzed Enantioselective Cyclization of 1,6‐Enynes through Intramolecular Chlorine Transfer as a Novel Strategy for Asymmetric Halopalladation. Chemistry 2022; 28:e202202528. [DOI: 10.1002/chem.202202528] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2022] [Indexed: 11/06/2022]
Affiliation(s)
- Junlong Tang
- Key Laboratory of Functional Molecular Engineering of Guangdong Province School of Chemistry and Chemical Engineering South China University of Technology Guangzhou 510640 China
| | - Liren Zhang
- Key Laboratory of Functional Molecular Engineering of Guangdong Province School of Chemistry and Chemical Engineering South China University of Technology Guangzhou 510640 China
| | - Wanqing Wu
- Key Laboratory of Functional Molecular Engineering of Guangdong Province School of Chemistry and Chemical Engineering South China University of Technology Guangzhou 510640 China
| | - Shaorong Yang
- Key Laboratory of Functional Molecular Engineering of Guangdong Province School of Chemistry and Chemical Engineering South China University of Technology Guangzhou 510640 China
| | - Huanfeng Jiang
- Key Laboratory of Functional Molecular Engineering of Guangdong Province School of Chemistry and Chemical Engineering South China University of Technology Guangzhou 510640 China
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33
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Kramm F, Ullwer F, Klinnert B, Zheng M, Plietker B. Iron-Catalyzed Cycloisomerization and C-C Bond Activation to Access Non-canonical Tricyclic Cyclobutanes. Angew Chem Int Ed Engl 2022; 61:e202205169. [PMID: 35818786 PMCID: PMC9546230 DOI: 10.1002/anie.202205169] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2022] [Indexed: 11/15/2022]
Abstract
Cycloisomerizations are powerful skeletal rearrangements that allow the construction of complex molecular architectures in an atom-economic way. We present here an unusual type of cyclopropyl enyne cycloisomerization that couples the process of a cycloisomerization with the activation of a C-C bond in cyclopropanes. A set of substituted non-canonical tricyclic cyclobutanes were synthesized under mild conditions using [(Ph3 P)2 Fe(CO)(NO)]BF4 as catalyst in good to excellent yields with high levels of stereocontrol.
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Affiliation(s)
- Frederik Kramm
- Institut für Organische ChemieUniversität StuttgartPfaffenwaldring 5570569StuttgartGermany
| | - Franziska Ullwer
- Institut für Organische ChemieUniversität StuttgartPfaffenwaldring 5570569StuttgartGermany
| | - Benedict Klinnert
- Lehrstuhl für Organische Chemie IFakultät Chemie und LebensmittelchemieTU DresdenBergstraße 6601069DresdenGermany
| | - Min Zheng
- Institut für Organische ChemieUniversität StuttgartPfaffenwaldring 5570569StuttgartGermany
- Lehrstuhl für Organische Chemie IFakultät Chemie und LebensmittelchemieTU DresdenBergstraße 6601069DresdenGermany
| | - Bernd Plietker
- Institut für Organische ChemieUniversität StuttgartPfaffenwaldring 5570569StuttgartGermany
- Lehrstuhl für Organische Chemie IFakultät Chemie und LebensmittelchemieTU DresdenBergstraße 6601069DresdenGermany
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34
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Bhatt D, Kim HY, Oh K. Cu(OTf)2‐Catalyzed Aerobic Cycloisomerization of Alkenyl Sulfones to Furans Using (E)‐β‐Chlorovinyl Ketones and Sodium Sulfinates. Adv Synth Catal 2022. [DOI: 10.1002/adsc.202200776] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Divya Bhatt
- Chung-Ang University KOREA (THE REPUBLIC OF)
| | | | - Kyungsoo Oh
- Chung-Ang University KOREA (THE REPUBLIC OF)
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35
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Cai C, Sun X, Feng Y, Zhang Q, Chai Y. Insights into the Activation of Alkyne-Installed Glycosyl Donors with Dual Acidic Metal Catalysts: Reaction Pathway, Influencing Factors, and Enlightenment for Glycosylation. Org Lett 2022; 24:6266-6271. [PMID: 35981218 DOI: 10.1021/acs.orglett.2c02338] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The activation of alkyne-installed glycosyl donors with dual acidic metal catalysts were studied. Lewis and/or π acidity-activated pathways were observed for alkynyl carbonate-, ester-, and ether-type donors, and π acidity-promoted reaction mode afforded higher efficiency and yields. The activation mode for a certain metal catalyst is determined by the nature of catalysts itself, protecting groups on sugar rings, type of sugars, and structure of aglycones. The discovery gives us valuable insights into the glycosylation of alkyne-containing donors.
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Affiliation(s)
- Chenglin Cai
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, Xi'an, Shaanxi 710119, P. R. China.,School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an, Shaanxi 710119, P. R. China
| | - Xingchun Sun
- School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an, Shaanxi 710119, P. R. China
| | - Yingle Feng
- School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an, Shaanxi 710119, P. R. China
| | - Qi Zhang
- School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an, Shaanxi 710119, P. R. China
| | - Yonghai Chai
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, Xi'an, Shaanxi 710119, P. R. China.,School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an, Shaanxi 710119, P. R. China
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36
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Kramm F, Ullwer F, Zheng M, Plietker B, Klinnert B. Iron‐Catalyzed Cycloisomerization and C‐C Bond Activation to Access Non‐canonical Tricyclic Cyclobutanes. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202205169] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Frederik Kramm
- Universität Stuttgart Fakultät 3 Chemie: Universitat Stuttgart Fakultat 3 Chemie Institut für Organische Chemie GERMANY
| | - Franziska Ullwer
- Universität Stuttgart Fakultät 3 Chemie: Universitat Stuttgart Fakultat 3 Chemie Institut für Organische Chemie GERMANY
| | - Min Zheng
- Technische Universität Dresden: Technische Universitat Dresden Fakultät Chemie und Lebensmittelchemie GERMANY
| | - Bernd Plietker
- Dresden University of Technology: Technische Universitat Dresden Organische Chemie I Fakultät für Chemie und Lebensmittelchemie 01062 Dresden GERMANY
| | - Benedict Klinnert
- Technische Universität Dresden: Technische Universitat Dresden Fakultät Chemie und Lebensmittelchemie GERMANY
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37
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Rong Wong Z, Schramm TK, Loipersberger M, Head-Gordon M, Toste FD. Revisiting the Bonding Model for Gold(I) Species: The Importance of Pauli Repulsion Revealed in a Gold(I)-Cyclobutadiene Complex. Angew Chem Int Ed Engl 2022; 61:e202202019. [PMID: 35261142 PMCID: PMC9173747 DOI: 10.1002/anie.202202019] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2022] [Indexed: 11/12/2022]
Abstract
Understanding the bonding of gold(I) species has been central to the development of gold(I) catalysis. Herein, we present the synthesis and characterization of the first gold(I)-cyclobutadiene complex, accompanied with bonding analysis by state-of-the-art energy decomposition analysis methods. Analysis of possible coordination modes for the new species not only confirms established characteristics of gold(I) bonding, but also suggests that Pauli repulsion is a key yet hitherto overlooked element. Additionally, we obtain a new perspective on gold(I)-bonding by comparison of the gold(I)-cyclobutadiene to congeners stabilized by p-, d-, and f-block metals. Consequently, we refine the gold(I) bonding model, with a delicate interplay of Pauli repulsion and charge transfer as the key driving force for various coordination motifs. Pauli repulsion is similarly determined as a significant interaction in AuI -alkyne species, corroborating this revised understanding of AuI bonding.
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Affiliation(s)
- Zeng Rong Wong
- Department of Chemistry, University of California, Berkeley 420 Latimer Hall, Berkeley, CA 94720 (USA)
| | - Tim K. Schramm
- Department of Chemistry, University of California, Berkeley 420 Latimer Hall, Berkeley, CA 94720 (USA)
- Department of Chemistry, RWTH Aachen University, Landoltweg 1 Aachen, 52074 (Germany)
| | - Matthias Loipersberger
- Department of Chemistry, University of California, Berkeley 420 Latimer Hall, Berkeley, CA 94720 (USA)
| | - Martin Head-Gordon
- Department of Chemistry, University of California, Berkeley 420 Latimer Hall, Berkeley, CA 94720 (USA)
- Chemical Sciences Division, Lawrence Berkeley National Laboratory, One Cyclotron Road, MS 70A3307, Berkeley, CA 94720 (USA)
| | - F. Dean Toste
- Department of Chemistry, University of California, Berkeley 420 Latimer Hall, Berkeley, CA 94720 (USA)
- Chemical Sciences Division, Lawrence Berkeley National Laboratory, One Cyclotron Road, MS 70A3307, Berkeley, CA 94720 (USA)
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38
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Nguyen T, Daiann Sosa Carrizo E, Cattey H, Fleurat‐Lessard P, Roger J, Hierso J. Tetranuclear Dicationic Aurophilic Gold(I) Catalysts in Enyne Cycloisomerization: Cooperativity for a Dramatic Shift in Selectivity. Chemistry 2022; 28:e202200769. [DOI: 10.1002/chem.202200769] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2022] [Indexed: 11/12/2022]
Affiliation(s)
- Tuan‐Anh Nguyen
- Université de Bourgogne, Institut de Chimie Moléculaire de l'Université de Bourgogne, UMR-CNRS 6302- Université Bourgogne-Franche- Comté (UBFC) 9, avenue Alain Savary 21078 Dijon France
| | - E. Daiann Sosa Carrizo
- Université de Bourgogne, Institut de Chimie Moléculaire de l'Université de Bourgogne, UMR-CNRS 6302- Université Bourgogne-Franche- Comté (UBFC) 9, avenue Alain Savary 21078 Dijon France
| | - Hélène Cattey
- Université de Bourgogne, Institut de Chimie Moléculaire de l'Université de Bourgogne, UMR-CNRS 6302- Université Bourgogne-Franche- Comté (UBFC) 9, avenue Alain Savary 21078 Dijon France
| | - Paul Fleurat‐Lessard
- Université de Bourgogne, Institut de Chimie Moléculaire de l'Université de Bourgogne, UMR-CNRS 6302- Université Bourgogne-Franche- Comté (UBFC) 9, avenue Alain Savary 21078 Dijon France
| | - Julien Roger
- Université de Bourgogne, Institut de Chimie Moléculaire de l'Université de Bourgogne, UMR-CNRS 6302- Université Bourgogne-Franche- Comté (UBFC) 9, avenue Alain Savary 21078 Dijon France
| | - Jean‐Cyrille Hierso
- Université de Bourgogne, Institut de Chimie Moléculaire de l'Université de Bourgogne, UMR-CNRS 6302- Université Bourgogne-Franche- Comté (UBFC) 9, avenue Alain Savary 21078 Dijon France
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39
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Cui JF, Yu Q, O WY, Huang LW, Yang B, Wong MK. Synthesis of 1 H-isoindoliums by electrophile-mediated cascade cyclization/iodination of propargylamine-based 1,6-diynes. Org Biomol Chem 2022; 20:3755-3762. [PMID: 35420116 DOI: 10.1039/d2ob00316c] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
A highly regio- and chemoselective synthesis of 1H-isoindoliums through a facile and novel cascade cyclization reaction of propargylamine-based 1,6-diynes under mild conditions has been developed. Different functional groups were compatible under the optimized reaction conditions, giving the corresponding products in up to 94% yields. Upon treatment with a base, the alkyne moiety of 1H-isoindoliums could be further transformed to allenes in excellent yields.
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Affiliation(s)
- Jian-Fang Cui
- Department of Chemistry, Southern University of Science and Technology, 1088 Xueyuan Blvd., Shenzhen 518055, China
| | - Qiong Yu
- The Hong Kong Polytechnic University Shenzhen Research Institute, Shenzhen 518057, China
| | - Wa-Yi O
- State Key Laboratory of Chemical Biology and Drug Discovery, Department of Applied Biology and Chemical Technology, The Hong Kong Polytechnic University, Hung Hom, Hong Kong, China. .,The Hong Kong Polytechnic University Shenzhen Research Institute, Shenzhen 518057, China
| | - Li-Wu Huang
- The Hong Kong Polytechnic University Shenzhen Research Institute, Shenzhen 518057, China
| | - Bin Yang
- State Key Laboratory of Chemical Biology and Drug Discovery, Department of Applied Biology and Chemical Technology, The Hong Kong Polytechnic University, Hung Hom, Hong Kong, China.
| | - Man-Kin Wong
- State Key Laboratory of Chemical Biology and Drug Discovery, Department of Applied Biology and Chemical Technology, The Hong Kong Polytechnic University, Hung Hom, Hong Kong, China. .,The Hong Kong Polytechnic University Shenzhen Research Institute, Shenzhen 518057, China
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40
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Patel RI, Singh J, Sharma A. Visible Light‐Mediated Manipulation of 1,n‐Enynes in Organic Synthesis. ChemCatChem 2022. [DOI: 10.1002/cctc.202200260] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Roshan I. Patel
- IIT Roorkee: Indian Institute of Technology Roorkee CHEMISTRY INDIA
| | - Jitender Singh
- IIT Roorkee: Indian Institute of Technology Roorkee CHEMISTRY INDIA
| | - Anuj Sharma
- Indian Institute of Technoology Roorkee Deptartment of Chemistry Room 303DDepartment of Chemistry, IIT Roorkee 247667 Roorkee INDIA
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41
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Wong ZR, Schramm TK, Loipersberger M, Head‐Gordon M, Toste FD. Revisiting the Bonding Model for Gold(I) Species: The Importance of Pauli Repulsion Revealed in a Gold(I)‐Cyclobutadiene Complex. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202202019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Zeng Rong Wong
- Department of Chemistry University of California, Berkeley 420 Latimer Hall Berkeley CA 94720 USA
| | - Tim K. Schramm
- Department of Chemistry University of California, Berkeley 420 Latimer Hall Berkeley CA 94720 USA
- Department of Chemistry RWTH Aachen University Landoltweg 1 52074 Aachen Germany
| | - Matthias Loipersberger
- Department of Chemistry University of California, Berkeley 420 Latimer Hall Berkeley CA 94720 USA
| | - Martin Head‐Gordon
- Department of Chemistry University of California, Berkeley 420 Latimer Hall Berkeley CA 94720 USA
- Chemical Sciences Division Lawrence Berkeley National Laboratory One Cyclotron Road, MS 70A3307 Berkeley CA 94720 USA
| | - F. Dean Toste
- Department of Chemistry University of California, Berkeley 420 Latimer Hall Berkeley CA 94720 USA
- Chemical Sciences Division Lawrence Berkeley National Laboratory One Cyclotron Road, MS 70A3307 Berkeley CA 94720 USA
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42
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Manjón‐Mata I, Quirós MT, Velasco‐Juárez E, Buñuel E, Cárdenas DJ. Nickel‐Catalyzed Hydroborylative Polycyclization of Allenynes: an Atom‐Economical and Diastereoselective Synthesis of Bicyclic 5‐5 Fused Rings. Adv Synth Catal 2022. [DOI: 10.1002/adsc.202101462] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Inés Manjón‐Mata
- Department of Organic Chemistry Facultad de Ciencias Universidad Autónoma de Madrid Institute for Advanced Research in Chemical Sciences (IAdChem) Avd. Francisco Tomás y Valiente 7, Campus de Cantoblanco 28049 Madrid Spain
| | - M. Teresa Quirós
- Department of Organic Chemistry and Inorganic Chemistry Facultad de Farmacia Universidad de Alcalá Campus Universitario. Ctra. Madrid-Barcelona, Km. 33,600. Alcalá de Henares 28871 Madrid Spain
| | - Elena Velasco‐Juárez
- Department of Organic Chemistry Facultad de Ciencias Universidad Autónoma de Madrid Institute for Advanced Research in Chemical Sciences (IAdChem) Avd. Francisco Tomás y Valiente 7, Campus de Cantoblanco 28049 Madrid Spain
| | - Elena Buñuel
- Department of Organic Chemistry Facultad de Ciencias Universidad Autónoma de Madrid Institute for Advanced Research in Chemical Sciences (IAdChem) Avd. Francisco Tomás y Valiente 7, Campus de Cantoblanco 28049 Madrid Spain
| | - Diego J. Cárdenas
- Department of Organic Chemistry Facultad de Ciencias Universidad Autónoma de Madrid Institute for Advanced Research in Chemical Sciences (IAdChem) Avd. Francisco Tomás y Valiente 7, Campus de Cantoblanco 28049 Madrid Spain
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43
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Liang RX, Jia YX. Aromatic π-Components for Enantioselective Heck Reactions and Heck/Anion-Capture Domino Sequences. Acc Chem Res 2022; 55:734-745. [PMID: 35119256 DOI: 10.1021/acs.accounts.1c00781] [Citation(s) in RCA: 58] [Impact Index Per Article: 29.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Olefin functionalization represents one of the most important synthetic transformations in organic synthesis. Over the past decades, palladium-catalyzed enantioselective Heck reactions, and Heck/anion-capture domino sequences through olefin carbopalladation followed by termination of the resulting alkyl-Pd species have been extensively developed. Extension of the coupling partners from classical olefins to other π-components would enable further advances and open new space in this field. Aromatics are important and easily available bulk chemicals. Dearomative transformation of endocyclic aromatic π-bonds via the Heck reaction pathway provides an efficient and straightforward route to structurally diverse alicyclic compounds. Nevertheless, major challenges for this transformation include aromaticity breaking and reactivity and selectivity issues.Recently, we have engaged in developing catalytic enantioselective dearomative Heck reactions and related domino reactions. A range of heteroarenes and naphthalenes have been employed as novel π-coupling partners in these reactions. Through dearomative migratory insertion of endocyclic aromatic C-C π-bonds followed by interception of the transient alkyl-Pd species, enantioselective Heck reactions, reductive Heck reactions, Heck/anion-capture difunctionalization reactions, and heteroarenyne cycloisomerization reactions have been established. Relying on β-H elimination of the alkyl-Pd intermediate, we realized enantioselective dearomative Heck reactions with a range of aromatic partners, including heterocyclic indoles, pyrroles, furans, benzofurans, and more challenging carbocyclic naphthalenes. In order to avoid the utilization of organohalide electrophiles, heteroarenyne cycloisomerization reaction was developed by merging intermolecular alkyne hydropalladation with intramolecular dearomative Heck reaction. Cycloisomerization of alkyne-tethered indoles delivered chiral indolines in excellent enantioselectivities with 100% atom economy. On the other hand, Heck/anion-capture domino sequences were established through nucleophilic trapping of the alkyl-Pd intermediate. When HCO2Na was employed as a capturing reagent, the enantioselective dearomative reductive Heck reaction of indoles was realized. By employing other nucleophiles, including alkynes, N-sulfonylhydrazones, and organoboron reagents, we developed a series of dearomative difunctionalization reactions. Two vicinal stereocenters with excellent enantio- and diastereoselectivities were constructed in the corresponding Heck/Sonogashira, Heck/vinylation, and Heck/borylation reactions. Moreover, dearomative 1,4-diarylation of naphthalenes was developed through Heck/Suzuki domino reactions, in which competitive C-H arylation and the direct Suzuki reaction were almost fully inhibited in the presence of a spiro-phosphoramidite ligand.In this Account, we provide a panoramic view of our results since 2015 on enantioselective Heck reactions and related domino sequences by extending the coupling partners from classical olefins to aromatic systems. Investigations outlined in this Account established straightforward and efficient access to a variety of structurally diverse chiral heteropolycyclic molecules starting from simple and planar aromatic compounds.
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Affiliation(s)
- Ren-Xiao Liang
- College of Chemical Engineering, State Key Laboratory Breeding Base of Green-Chemical Synthesis Technology, Zhejiang University of Technology, Chaowang Road 18#, Hangzhou 310014, China
| | - Yi-Xia Jia
- College of Chemical Engineering, State Key Laboratory Breeding Base of Green-Chemical Synthesis Technology, Zhejiang University of Technology, Chaowang Road 18#, Hangzhou 310014, China
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44
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Shee M, Singh NDP. Chemical versatility of azide radical: journey from a transient species to synthetic accessibility in organic transformations. Chem Soc Rev 2022; 51:2255-2312. [PMID: 35229836 DOI: 10.1039/d1cs00494h] [Citation(s) in RCA: 26] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
The generation of azide radical (N3˙) occurs from its precursors primarily via a single electron transfer (SET) process or homolytic cleavage by chemical methods or advanced photoredox/electrochemical methods. This in situ generated transient open-shell species has unique characteristic features that set its reactivity. In the past, the azide radical was widely used for various studies in radiation chemistry as a 1e- oxidant of biologically important molecules, but now it is being exploited for synthetic applications based on its addition and intermolecular hydrogen atom transfer (HAT) abilities. Due to the significant role of nitrogen-containing molecules in synthesis, drug discovery, biological, and material sciences, the direct addition onto unsaturated bonds for the simultaneous construction of C-N bond with other (C-X) bonds are indeed worth highlighting. Moreover, the ability to generate O- or C-centered radicals by N3˙ via electron transfer (ET) and intermolecular HAT processes is also well documented. The purpose of controlling the reactivity of this short-lived intermediate in organic transformations drives us to survey: (i) the history of azide radical and its structural properties (thermodynamic, spectroscopic, etc.), (ii) chemical reactivities and kinetics, (iii) methods to produce N3˙ from various precursors, (iv) several significant azide radical-mediated transformations in the field of functionalization with unsaturated bonds, C-H functionalization via HAT, tandem, and multicomponent reaction with a critical analysis of underlying mechanistic approaches and outcomes, (v) concept of taming the reactivity of azide radicals for potential opportunities, in this review.
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Affiliation(s)
- Maniklal Shee
- Department of Chemistry, Indian Institute of Technology Kharagpur, Kharagpur, West Bengal, 721302, India.
| | - N D Pradeep Singh
- Department of Chemistry, Indian Institute of Technology Kharagpur, Kharagpur, West Bengal, 721302, India.
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45
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Suri Babu U, Singam MKR, Kumar MN, Nanubolu JB, Sridhar Reddy M. Palladium-Catalyzed Carbo-Aminative Cyclization of 1,6-Enynes: Access to Napthyridinone Derivatives. Org Lett 2022; 24:1598-1603. [PMID: 35191708 DOI: 10.1021/acs.orglett.2c00088] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
1,6-Enynes have recently stimulated enormous attention toward paving the way to unique cascade cyclizations offering complex cyclic motifs from linear substrates. We describe herein a general approach to napthyridinones via the Pd-catalyzed annulation of 1,6-enynes with 2-iodoanilines. This protocol represents a rare carbo-aminative annulative cyclization via the 6-endo-trig mode, subduing the well-documented exo-trig/dig cyclizations. The regioselective aryl palladation of alkyne followed by Heck-type intramolecular coupling before isomerization were key in realizing this cascade.
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Affiliation(s)
- Undamatla Suri Babu
- Department of Organic Synthesis & Process Chemistry, CSIR-Indian Institute of Chemical Technology, Hyderabad 500007, India.,Academy of Scientific and Innovative Research, Ghaziabad 201002, India
| | - Maneesh Kumar Reddy Singam
- Department of Organic Synthesis & Process Chemistry, CSIR-Indian Institute of Chemical Technology, Hyderabad 500007, India.,Academy of Scientific and Innovative Research, Ghaziabad 201002, India
| | - Muniganti Naveen Kumar
- Department of Organic Synthesis & Process Chemistry, CSIR-Indian Institute of Chemical Technology, Hyderabad 500007, India.,Academy of Scientific and Innovative Research, Ghaziabad 201002, India
| | | | - Maddi Sridhar Reddy
- Department of Organic Synthesis & Process Chemistry, CSIR-Indian Institute of Chemical Technology, Hyderabad 500007, India.,Academy of Scientific and Innovative Research, Ghaziabad 201002, India
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46
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Chan P, Baratay C, Li W, Mathiew M, Yu L, Kyne S, Rao W. Gold‐ and Brønsted Acid‐Catalysed Deacyloxylative Cycloaromatisation of 1,6‐Diyne Esters to 11H‐Benzo[a]fluorenes and 13H‐Indeno[1,2‐l]phenanthrenes. Adv Synth Catal 2022. [DOI: 10.1002/adsc.202200016] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
| | | | - Wenhai Li
- China Pharmaceutical University CHINA
| | | | - Lei Yu
- Monash University AUSTRALIA
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47
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Yu JK, Czekelius C. Insights into the Gold‐catalyzed Cycloisomerization of 3‐Allyl‐1,4‐diynes for the Synthesis of Bicyclic Hydrocarbons. European J Org Chem 2022. [DOI: 10.1002/ejoc.202200027] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Jhen-Kuei Yu
- Heinrich Heine University Düsseldorf: Heinrich-Heine-Universitat Dusseldorf Chemistry GERMANY
| | - Constantin Czekelius
- Heinrich-Heine-Universitat Dusseldorf Organic Chemistry II Building 26.33Room U1.33Universitaetsstrasse 1 40225 Duesseldorf GERMANY
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48
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Zeng J, Fang W, Lin B, Chen GQ, Zhang X. Highly Enantioselective Rhodium(I)-Catalyzed Alder-ene-type Cycloisomerization of 1,7-Enynes. Org Lett 2022; 24:869-874. [PMID: 35029403 DOI: 10.1021/acs.orglett.1c04171] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The transition-metal-catalyzed asymmetric cycloisomerization of 1,7-enynes is regarded as a formidable challenge due to the poor ability of 1,7-enynes to serve as bidentate ligands to metal. In this Letter, a highly enantioselective rhodium(I)-catalyzed Alder-ene-type cycloisomerization of 1,7-enynes is disclosed, offering an efficient method for the synthesis of a wide range of fused six-membered cyclic compounds. Furthermore, a high turnover frequency experiment and deuterium-labeling experiment were performed to give insight into this transformation.
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Affiliation(s)
- Jingwen Zeng
- Medi-X Pingshan and Department of Chemistry, Southern University of Science and Technology, Shenzhen 518000, People's Republic of China
| | - Wei Fang
- Medi-X Pingshan and Department of Chemistry, Southern University of Science and Technology, Shenzhen 518000, People's Republic of China
| | - Bijin Lin
- Medi-X Pingshan and Department of Chemistry, Southern University of Science and Technology, Shenzhen 518000, People's Republic of China
| | - Gen-Qiang Chen
- Academy for Advanced Interdisciplinary Studies and Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology, Shenzhen 518055, People's Republic of China
| | - Xumu Zhang
- Medi-X Pingshan and Department of Chemistry, Southern University of Science and Technology, Shenzhen 518000, People's Republic of China
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49
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Ge J, Wu H, Kong D, Huang G. Mechanism and Origins of Enantioselectivity of Cobalt-Catalyzed Intermolecular Hydroacylation/Cyclization of 1,6-Enynes with Aldehydes. Org Chem Front 2022. [DOI: 10.1039/d2qo00179a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Density functional theory calculations were performed to investigate the cobalt-catalyzed intermolecular hydroacylation/cyclization of 1,6-enynes. The computations show that the initial oxidative cyclization constitutes the rate-determining step of the overall reaction....
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50
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Casciotti M, Romo-Islas G, Álvarez M, Molina F, Muñoz-Molina JM, Belderrain TR, Rodríguez L. Gold( i) complexes bearing a PNP-type pincer ligand: photophysical properties and catalytic investigations. Dalton Trans 2022; 51:17162-17169. [DOI: 10.1039/d2dt02429b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The synthesis and characterization of two dinuclear and five tetranuclear gold(i) complexes bearing the 2,6-bis(diphenylphosphinomethyl)pyridine diphosphane ligand (DPPMPY) are herein reported.
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Affiliation(s)
- Martina Casciotti
- Laboratorio de Catálisis Homogénea, Unidad Asociada al CSIC, CIQSO-Centro de Investigación en Química Sostenible, Departamento de Química, Universidad de Huelva, 21007, Huelva, Spain
| | - Guillermo Romo-Islas
- Departament de Química Inorgànica i Orgànica. Secció de Química Inorgànica. Universitat de Barcelona, Martí i Franquès 1-11, 08028 Barcelona, Spain
- Institut de Nanociència i Nanotecnologia (IN2UB). Universitat de Barcelona, 08028 Barcelona, Spain
| | - María Álvarez
- Laboratorio de Catálisis Homogénea, Unidad Asociada al CSIC, CIQSO-Centro de Investigación en Química Sostenible, Departamento de Química, Universidad de Huelva, 21007, Huelva, Spain
| | - Francisco Molina
- Laboratorio de Catálisis Homogénea, Unidad Asociada al CSIC, CIQSO-Centro de Investigación en Química Sostenible, Departamento de Química, Universidad de Huelva, 21007, Huelva, Spain
| | - José María Muñoz-Molina
- Laboratorio de Catálisis Homogénea, Unidad Asociada al CSIC, CIQSO-Centro de Investigación en Química Sostenible, Departamento de Química, Universidad de Huelva, 21007, Huelva, Spain
| | - Tomás R. Belderrain
- Laboratorio de Catálisis Homogénea, Unidad Asociada al CSIC, CIQSO-Centro de Investigación en Química Sostenible, Departamento de Química, Universidad de Huelva, 21007, Huelva, Spain
| | - Laura Rodríguez
- Departament de Química Inorgànica i Orgànica. Secció de Química Inorgànica. Universitat de Barcelona, Martí i Franquès 1-11, 08028 Barcelona, Spain
- Institut de Nanociència i Nanotecnologia (IN2UB). Universitat de Barcelona, 08028 Barcelona, Spain
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