1
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Li C, Zhao W, He J, Zhang Y. Topology Controlled All-(Meth)acrylic Thermoplastic Elastomers by Multi-Functional Lewis Pairs-Mediated Polymerization. Angew Chem Int Ed Engl 2024; 63:e202401265. [PMID: 38390752 DOI: 10.1002/anie.202401265] [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: 01/18/2024] [Revised: 02/22/2024] [Accepted: 02/22/2024] [Indexed: 02/24/2024]
Abstract
It remains challenging to synthesize all-(meth)acrylic triblock thermoplastic elastomers (TPEs), due to the drastically different reactivities between the acrylates and methacrylates and inevitable occurrence of side reactions during polymerization of acrylates. By taking advantage of the easy structural modulation features of N-heterocyclic olefins (NHOs), we design and synthesize strong nucleophilic tetraphenylethylene-based NHOs varying in the number (i.e. mono-, dual- and tetra-) of initiating functional groups. Its combination with bulky organoaluminum [iBuAl(BHT)2] (BHT=bis(2,6-di-tBu-4-methylphenoxy)) constructs Lewis pair (LP) to realize the living polymerization of both acrylates and methacrylates, furnishing polyacrylates with ultrahigh molecular weight (Mn up to 2174 kg ⋅ mol-1) within 4 min. Moreover, these NHO-based LPs enable us to not only realize the control over the polymers' topology (i.e. linear and star), but also achieve triblock star copolymers in one-step manner. Mechanical studies reveal that the star triblock TPEs exhibit better mechanical properties (elongation at break up to 1863 % and tensile strength up to 19.1 MPa) in comparison with the linear analogs. Moreover, the presence of tetraphenylethylene group in the NHOs entitled the triblock TPEs with excellent AIE properties in both solution and solid state.
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Affiliation(s)
- Chengkai Li
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun, Jilin, China, 130012
- SINOPEC Beijing Research Institute of Chemical Industry, Beijing, China, 100013
| | - Wuchao Zhao
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun, Jilin, China, 130012
| | - Jianghua He
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun, Jilin, China, 130012
| | - Yuetao Zhang
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun, Jilin, China, 130012
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2
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Kumari S, Joshi A, Borthakur I, Kundu S. Activation of Ethanol via Conjunction of a Photocatalyst and a HAT Reagent for the Synthesis of Benzimidazoles. J Org Chem 2023; 88:11523-11533. [PMID: 37525430 DOI: 10.1021/acs.joc.3c00674] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/02/2023]
Abstract
The transformation of ethanol to value-added chemicals has tremendous potential. However, generally, harsh reaction conditions are needed for the functionalization of ethanol due to its high dehydrogenation energy. Herein, a metal-free photo-mediated activation of challenging ethanol and higher aliphatic alcohols for the synthesis of differently functionalized benzimidazoles under mild conditions is disclosed. The interplay of a photocatalyst and a HAT reagent facilitated the activation of aliphatic alcohols. A wide array of diamines with different functional groups were well tolerated, and the protocol was also extended to N-substituted diamines for the synthesis of industrially important benzimidazoles. A probable catalytic cycle was proposed based on various mechanistic studies.
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Affiliation(s)
- Saloni Kumari
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur 208016, Uttar Pradesh, India
| | - Abhisek Joshi
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur 208016, Uttar Pradesh, India
| | - Ishani Borthakur
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur 208016, Uttar Pradesh, India
| | - Sabuj Kundu
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur 208016, Uttar Pradesh, India
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3
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Wang S, Li Y, Zhang Z, Xiang J, Zheng L. Catalyst-Free α-Allylation of Dihydroisoquinolines with Morita-Baylis-Hillman Carbonates and Its Applications in the Construction of Benzo[ a]quinolizidines. J Org Chem 2023; 88:3636-3649. [PMID: 36862664 DOI: 10.1021/acs.joc.2c02843] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/03/2023]
Abstract
In this work, a mild and efficient catalyst-free α-allylation of 3,4-dihydroisoquinoline imines with Morita-Baylis-Hillman (MBH) carbonates was reported. The scopes of 3,4-dihydroisoquinolines and MBH carbonates as well as gram-scale synthesis were investigated, and densely functionalized adducts were obtained in moderate to good yields. The synthetic utility of these versatile synthons was further demonstrated by the facile synthesis of diverse benzo[a]quinolizidine skeletons.
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Affiliation(s)
- Siyu Wang
- The Center for Combinatorial Chemistry and Drug Discovery of Jilin University, The School of Pharmaceutical Sciences, Jilin University, 1266 Fujin Road, Changchun, Jilin 130021, P. R. China
| | - Yuhan Li
- The Center for Combinatorial Chemistry and Drug Discovery of Jilin University, The School of Pharmaceutical Sciences, Jilin University, 1266 Fujin Road, Changchun, Jilin 130021, P. R. China
| | - Zhuoqi Zhang
- The Center for Combinatorial Chemistry and Drug Discovery of Jilin University, The School of Pharmaceutical Sciences, Jilin University, 1266 Fujin Road, Changchun, Jilin 130021, P. R. China
| | - Jinbao Xiang
- The Center for Combinatorial Chemistry and Drug Discovery of Jilin University, The School of Pharmaceutical Sciences, Jilin University, 1266 Fujin Road, Changchun, Jilin 130021, P. R. China
| | - Lianyou Zheng
- The Center for Combinatorial Chemistry and Drug Discovery of Jilin University, The School of Pharmaceutical Sciences, Jilin University, 1266 Fujin Road, Changchun, Jilin 130021, P. R. China
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4
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Zhang P, Wang J, Robertson ZR, Newhouse TR. Coordination‐Controlled Nickel‐Catalyzed Benzylic Allylation of Unactivated Electron‐Deficient Heterocycles. Angew Chem Int Ed Engl 2022; 61:e202200602. [DOI: 10.1002/anie.202200602] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2022] [Indexed: 12/18/2022]
Affiliation(s)
- Pengpeng Zhang
- Department of Chemistry Yale University 225 Prospect Street, PO Box 208107 New Haven CT 06511 USA
| | - Jin Wang
- Department of Chemistry Yale University 225 Prospect Street, PO Box 208107 New Haven CT 06511 USA
| | - Zoe R. Robertson
- Department of Chemistry Yale University 225 Prospect Street, PO Box 208107 New Haven CT 06511 USA
| | - Timothy R. Newhouse
- Department of Chemistry Yale University 225 Prospect Street, PO Box 208107 New Haven CT 06511 USA
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5
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Zhang P, Wang J, Robertson ZR, Newhouse TR. Coordination‐Controlled Nickel‐Catalyzed Benzylic Allylation of Unactivated Electron‐Deficient Heterocycles. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202200602] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
| | - Jin Wang
- Yale University Department of Chemistry UNITED STATES
| | | | - Timothy R. Newhouse
- Yale University Department of Chemistry 225 Prospect St. 06511 New Haven UNITED STATES
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6
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Abstract
Carbon–carbon bond formation by [3,3]-sigmatropic rearrangement is a fundamental and powerful method that has been used to build organic molecules for a long time. Initially, Claisen and Cope rearrangements proceeded at high temperatures with limited scopes. By introducing catalytic systems, highly functionalized substrates have become accessible for forming complex structures under mild conditions, and asymmetric synthesis can be achieved by using chiral catalytic systems. This review describes recent breakthroughs in catalytic [3,3]-sigmatropic rearrangements since 2016. Detailed reaction mechanisms are discussed to enable an understanding of the reactivity and selectivity of the reactions. Finally, this review is inspires the development of new cascade reaction pathways employing catalytic [3,3]-sigmatropic rearrangement as related methodologies for the synthesis of complex functional molecules.
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7
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Tsutsumi H, Katsuyama Y, Tezuka T, Miyano R, Inahashi Y, Takahashi Y, Nakashima T, Ohnishi Y. Identification and Analysis of the Biosynthetic Gene Cluster for the Indolizidine Alkaloid Iminimycin in Streptomyces griseus. Chembiochem 2021; 23:e202100517. [PMID: 34767291 DOI: 10.1002/cbic.202100517] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2021] [Revised: 10/27/2021] [Indexed: 11/06/2022]
Abstract
Indolizidine alkaloids, which have versatile bioactivities, are produced by various organisms. Although the biosynthesis of some indolizidine alkaloids has been studied, the enzymatic machinery for their biosynthesis in Streptomyces remains elusive. Here, we report the identification and analysis of the biosynthetic gene cluster for iminimycin, an indolizidine alkaloid with a 6-5-3 tricyclic system containing an iminium cation from Streptomyces griseus. The gene cluster has 22 genes, including four genes encoding polyketide synthases (PKSs), which consist of eight modules in total. In vitro analysis of the first module revealed that its acyltransferase domain selects malonyl-CoA, although predicted to select methylmalonyl-CoA. Inactivation of seven tailoring enzyme-encoding genes and structural elucidation of four compounds accumulated in mutants provided important insights into iminimycin biosynthesis, although some of these compounds appeared to be shunt products. This study expands our knowledge of the biosynthetic machinery of indolizidine alkaloids and the enzymatic chemistry of PKS.
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Affiliation(s)
- Hayama Tsutsumi
- Department of Biotechnology, Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo, 113-8657, Japan
| | - Yohei Katsuyama
- Department of Biotechnology, Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo, 113-8657, Japan.,Collaborative Research Institute for Innovative Microbiology, The University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo, 113-8657, Japan
| | - Takeaki Tezuka
- Department of Biotechnology, Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo, 113-8657, Japan.,Collaborative Research Institute for Innovative Microbiology, The University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo, 113-8657, Japan
| | - Rei Miyano
- Graduate School of Infection Control Sciences, Kitasato University, 5-9-1, Minato-ku, Tokyo, 108-8641, Japan
| | - Yuki Inahashi
- Graduate School of Infection Control Sciences, Kitasato University, 5-9-1, Minato-ku, Tokyo, 108-8641, Japan.,Kitasato Institute for Life Sciences, Present: Ōmura Satoshi Memorial Institute), Kitasato University, 5-9-1, Minato-ku, Tokyo, 108-8641, Japan
| | - Yoko Takahashi
- Kitasato Institute for Life Sciences, Present: Ōmura Satoshi Memorial Institute), Kitasato University, 5-9-1, Minato-ku, Tokyo, 108-8641, Japan
| | - Takuji Nakashima
- Graduate School of Infection Control Sciences, Kitasato University, 5-9-1, Minato-ku, Tokyo, 108-8641, Japan.,Kitasato Institute for Life Sciences, Present: Ōmura Satoshi Memorial Institute), Kitasato University, 5-9-1, Minato-ku, Tokyo, 108-8641, Japan
| | - Yasuo Ohnishi
- Department of Biotechnology, Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo, 113-8657, Japan.,Collaborative Research Institute for Innovative Microbiology, The University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo, 113-8657, Japan
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8
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9
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Li MH, Si XJ, Zhang H, Yang D, Niu JL, Song MP. Directed Cobalt-Catalyzed C-H Activation to Form C-C and C-O Bonds in One Pot via Three-Component Coupling. Org Lett 2021; 23:914-919. [PMID: 33475370 DOI: 10.1021/acs.orglett.0c04122] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Herein, we disclose an efficient cobalt-catalyzed three-component coupling of benzamides, diazo compounds, and tert-butyl hydroperoxide, which provides an efficient approach to construct C(sp2)-C(sp3) and C-O bonds in one-pot accompanied with C-H activation. This protocol features low catalyst loading (4 mol %), the avoidance of additives, and excellent functional group compatibility, providing three-component coupling adducts with high yields under mild conditions (up to 88%). Mechanism studies show that the reaction may involve a radical process.
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Affiliation(s)
- Meng-Hui Li
- Green Catalysis Center, and College of Chemistry, Zhengzhou University, Zhengzhou 450001, P. R. China
| | - Xiao-Ju Si
- Green Catalysis Center, and College of Chemistry, Zhengzhou University, Zhengzhou 450001, P. R. China
| | - He Zhang
- Green Catalysis Center, and College of Chemistry, Zhengzhou University, Zhengzhou 450001, P. R. China
| | - Dandan Yang
- Green Catalysis Center, and College of Chemistry, Zhengzhou University, Zhengzhou 450001, P. R. China
| | - Jun-Long Niu
- Green Catalysis Center, and College of Chemistry, Zhengzhou University, Zhengzhou 450001, P. R. China
| | - Mao-Ping Song
- Green Catalysis Center, and College of Chemistry, Zhengzhou University, Zhengzhou 450001, P. R. China
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10
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Mori-Quiroz LM, Londhe SS, Clift MD. Formal α-Allylation of Primary Amines by a Dearomative, Palladium-Catalyzed Umpolung Allylation of N-(Aryloxy)imines. J Org Chem 2020; 85:14827-14846. [PMID: 33152244 DOI: 10.1021/acs.joc.0c01020] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
N-(Aryloxy)imines, readily accessible by condensation/tautomerization of (pseudo)benzylic primary amines and 2,6-di-tert-butyl-1,4-benzoquinone, undergo efficient allylation to afford a wide range of homoallylic primary amines following hydrolytic workup. Deprotonation of N-(aryloxy)imines generates a delocalized 2-azaallyl anion-type nucleophile that engages in dearomative C-C bond-forming reactions with allylpalladium(II) electrophiles generated from allylic tert-butyl carbonates. This reactivity umpolung enables the formal α-allylation of (pseudo)benzylic primary amines. Mechanistic studies reveal that the apparent regioselectivity of the desired bond-forming event is a convergent process that is initiated by unselective allylation of N-(aryloxy)imines to give several regioisomeric species, which subsequently rearrange via stepwise [1,3]- or concerted [3,3]-sigmatropic shifts, ultimately converging to provide the desired regioisomer of the amine products.
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Affiliation(s)
- Luis M Mori-Quiroz
- Department of Chemistry, The University of Kansas, 1140 Gray-Little Hall, 1567 Irving Hill Road, Lawrence, Kansas 66045, United States
| | - Shrikant S Londhe
- Department of Chemistry, The University of Kansas, 1140 Gray-Little Hall, 1567 Irving Hill Road, Lawrence, Kansas 66045, United States
| | - Michael D Clift
- Department of Chemistry, The University of Kansas, 1140 Gray-Little Hall, 1567 Irving Hill Road, Lawrence, Kansas 66045, United States
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11
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Schlatzer T, Schröder H, Trobe M, Lembacher‐Fadum C, Stangl S, Schlögl C, Weber H, Breinbauer R. Pd/BIPHEPHOS is an Efficient Catalyst for the Pd-Catalyzed S-Allylation of Thiols with High n-Selectivity. Adv Synth Catal 2020; 362:331-336. [PMID: 32063821 PMCID: PMC7004212 DOI: 10.1002/adsc.201901250] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2019] [Revised: 10/22/2019] [Indexed: 11/06/2022]
Abstract
The Pd-catalyzed S-allylation of thiols with stable allylcarbonate and allylacetate reagents offers several advantages over established reactions for the formation of thioethers. We could demonstrate that Pd/BIPHEPHOS is a catalyst system which allows the transition metal-catalyzed S-allylation of thiols with excellent n-regioselectivity. Mechanistic studies showed that this reaction is reversible under the applied reaction conditions. The excellent functional group tolerance of this transformation was demonstrated with a broad variety of thiol nucleophiles (18 examples) and allyl substrates (9 examples), and could even be applied for the late-stage diversification of cephalosporins, which might find application in the synthesis of new antibiotics.
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Affiliation(s)
- Thomas Schlatzer
- Institute of Organic ChemistryGraz University of TechnologyStremayrgasse 9A-8010GrazAustria
| | - Hilmar Schröder
- Institute of Organic ChemistryGraz University of TechnologyStremayrgasse 9A-8010GrazAustria
| | - Melanie Trobe
- Institute of Organic ChemistryGraz University of TechnologyStremayrgasse 9A-8010GrazAustria
| | | | - Simon Stangl
- Institute of Organic ChemistryGraz University of TechnologyStremayrgasse 9A-8010GrazAustria
| | - Christoph Schlögl
- Institute of Organic ChemistryGraz University of TechnologyStremayrgasse 9A-8010GrazAustria
| | - Hansjörg Weber
- Institute of Organic ChemistryGraz University of TechnologyStremayrgasse 9A-8010GrazAustria
| | - Rolf Breinbauer
- Institute of Organic ChemistryGraz University of TechnologyStremayrgasse 9A-8010GrazAustria
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12
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Kaur M, Van Humbeck JF. Recent trends in catalytic sp 3 C-H functionalization of heterocycles. Org Biomol Chem 2020; 18:606-617. [PMID: 31912069 DOI: 10.1039/c9ob01559k] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Heterocycles are a ubiquitous substructure in organic small molecules designed for use in materials and medicines. Recent work in catalysis has focused on enabling access to new heterocycle structures by sp3 C-H functionalization on alkyl side-chain substituents-especially at the heterobenzylic position-with more than two hundred manuscripts published just within the last ten years. Rather than describing in detail each of these reports, in this mini-review we attempt to highlight gaps in existing techniques. A semi-quantitative overview of ongoing work strongly suggests that several specific heterocycle types and bond formations outside of C-C, C-N, and C-O have been almost completely overlooked.
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Affiliation(s)
- Milanpreet Kaur
- Department of Chemistry, University of Calgary, 2500 University Drive NW, Calgary, Alberta, Canada T2N 1N4.
| | - Jeffrey F Van Humbeck
- Department of Chemistry, University of Calgary, 2500 University Drive NW, Calgary, Alberta, Canada T2N 1N4.
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13
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Schlatzer T, Kriegesmann J, Schröder H, Trobe M, Lembacher-Fadum C, Santner S, Kravchuk AV, Becker CFW, Breinbauer R. Labeling and Natural Post-Translational Modification of Peptides and Proteins via Chemoselective Pd-Catalyzed Prenylation of Cysteine. J Am Chem Soc 2019; 141:14931-14937. [PMID: 31469558 PMCID: PMC6776382 DOI: 10.1021/jacs.9b08279] [Citation(s) in RCA: 43] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2019] [Indexed: 02/06/2023]
Abstract
The prenylation of peptides and proteins is an important post-translational modification observed in vivo. We report that the Pd-catalyzed Tsuji-Trost allylation with a Pd/BIPHEPHOS catalyst system allows the allylation of Cys-containing peptides and proteins with complete chemoselectivity and high n/i regioselectivity. In contrast to recently established methods, which use non-native connections, the Pd-catalyzed prenylation produces the natural n-prenylthioether bond. In addition, a variety of biophysical probes such as affinity handles and fluorescent tags can be introduced into Cys-containing peptides and proteins. Furthermore, peptides containing two cysteine residues can be stapled or cyclized using homobifunctional allylic carbonate reagents.
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Affiliation(s)
- Thomas Schlatzer
- Institute
of Organic Chemistry, Graz University of
Technology, Stremayrgasse 9, A-8010 Graz, Austria
| | - Julia Kriegesmann
- Institute
of Biological Chemistry, Faculty of Chemistry, University of Vienna, Währinger Strasse 38, A-1090 Vienna, Austria
| | - Hilmar Schröder
- Institute
of Organic Chemistry, Graz University of
Technology, Stremayrgasse 9, A-8010 Graz, Austria
| | - Melanie Trobe
- Institute
of Organic Chemistry, Graz University of
Technology, Stremayrgasse 9, A-8010 Graz, Austria
| | - Christian Lembacher-Fadum
- Institute
of Organic Chemistry, Graz University of
Technology, Stremayrgasse 9, A-8010 Graz, Austria
| | - Simone Santner
- Institute
of Organic Chemistry, Graz University of
Technology, Stremayrgasse 9, A-8010 Graz, Austria
| | - Alexander V. Kravchuk
- Institute
of Biological Chemistry, Faculty of Chemistry, University of Vienna, Währinger Strasse 38, A-1090 Vienna, Austria
| | - Christian F. W. Becker
- Institute
of Biological Chemistry, Faculty of Chemistry, University of Vienna, Währinger Strasse 38, A-1090 Vienna, Austria
| | - Rolf Breinbauer
- Institute
of Organic Chemistry, Graz University of
Technology, Stremayrgasse 9, A-8010 Graz, Austria
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14
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Achary R, Kim S, Choi Y, Mathi GR, Kim HJ, Hwang JY, Kim P. Succinct Syntheses of Methopholine, (±)‐Homolaudanosine, and (±)‐Dysoxyline via Metal‐free One‐Pot Double Alkylation on 1‐Methyl‐3,4‐dihydroisoquinolines. B KOREAN CHEM SOC 2019. [DOI: 10.1002/bkcs.11677] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Raghavendra Achary
- Therapeutics and Biotechnology DivisionKorea Research Institute of Chemical Technology Daejeon 34114 South Korea
- Department of Medicinal Chemistry and PharmacologyUniversity of Science and Technology Daejeon 34113 South Korea
| | - Seulgi Kim
- Therapeutics and Biotechnology DivisionKorea Research Institute of Chemical Technology Daejeon 34114 South Korea
- Department of ChemistryChungnam National University Daejeon 34134 South Korea
| | - Yuri Choi
- Therapeutics and Biotechnology DivisionKorea Research Institute of Chemical Technology Daejeon 34114 South Korea
- Department of Medicinal Chemistry and PharmacologyUniversity of Science and Technology Daejeon 34113 South Korea
| | - Gangadhar Rao Mathi
- Therapeutics and Biotechnology DivisionKorea Research Institute of Chemical Technology Daejeon 34114 South Korea
- Department of Medicinal Chemistry and PharmacologyUniversity of Science and Technology Daejeon 34113 South Korea
| | - Hyun Jin Kim
- Therapeutics and Biotechnology DivisionKorea Research Institute of Chemical Technology Daejeon 34114 South Korea
| | - Jong Yeon Hwang
- Therapeutics and Biotechnology DivisionKorea Research Institute of Chemical Technology Daejeon 34114 South Korea
- Department of Medicinal Chemistry and PharmacologyUniversity of Science and Technology Daejeon 34113 South Korea
| | - Pilho Kim
- Therapeutics and Biotechnology DivisionKorea Research Institute of Chemical Technology Daejeon 34114 South Korea
- Department of Medicinal Chemistry and PharmacologyUniversity of Science and Technology Daejeon 34113 South Korea
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15
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Yan P, Pan S, Hu J, Lu L, Zeng X, Zhong G. Palladium Catalyzed Controllable Mono‐ or Di‐Allylic Substitution Reaction of Benzothiazolylacetate with Allylic Alcohols. Adv Synth Catal 2019. [DOI: 10.1002/adsc.201801351] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Peipei Yan
- College of Materials, Chemistry and Chemical EngineeringHangzhou Normal University Hangzhou 311121 People's Republic of China
| | - Shulei Pan
- College of Materials, Chemistry and Chemical EngineeringHangzhou Normal University Hangzhou 311121 People's Republic of China
| | - Jinjin Hu
- College of Materials, Chemistry and Chemical EngineeringHangzhou Normal University Hangzhou 311121 People's Republic of China
| | - Limei Lu
- College of Materials, Chemistry and Chemical EngineeringHangzhou Normal University Hangzhou 311121 People's Republic of China
| | - Xiaofei Zeng
- College of Materials, Chemistry and Chemical EngineeringHangzhou Normal University Hangzhou 311121 People's Republic of China
| | - Guofu Zhong
- College of Materials, Chemistry and Chemical EngineeringHangzhou Normal University Hangzhou 311121 People's Republic of China
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16
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Sweeney JB, Ball AK, Lawrence PA, Sinclair MC, Smith LJ. A Simple, Broad-Scope Nickel(0) Precatalyst System for the Direct Amination of Allyl Alcohols. Angew Chem Int Ed Engl 2018; 57:10202-10206. [PMID: 29939450 DOI: 10.1002/anie.201805611] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2018] [Revised: 06/14/2018] [Indexed: 12/20/2022]
Abstract
The preparation of allylic amines is traditionally accomplished by reactions of amines with reactive electrophiles, such as allylic halides, sulfonates, or oxyphosphonium species; such methods involve hazardous reagents, generate stoichiometric waste streams, and often suffer from side reactions (such as overalkylation). We report here the first broad-scope nickel-catalysed direct amination of allyl alcohols: An inexpensive NiII /Zn couple enables the allylation of primary, secondary, and electron-deficient amines without the need for glove-box techniques. Under mild conditions, primary and secondary aliphatic amines react smoothly with a range of allyl alcohols, giving secondary and tertiary amines efficiently. This "totally catalytic" method can also be applied to electron-deficient nitrogen nucleophiles; the practicality of the process was demonstrated in an efficient, gram-scale preparation of the calcium antagonist drug substance flunarizine (Sibelium®).
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Affiliation(s)
- Joseph B Sweeney
- Department of Chemistry, Lancaster University, Lancaster, LA1 4YB, UK
| | - Anthony K Ball
- Department of Chemical Sciences, University of Huddersfield, Queensgate, Huddersfield, HD1 3DH, UK
| | - Philippa A Lawrence
- Department of Chemical Sciences, University of Huddersfield, Queensgate, Huddersfield, HD1 3DH, UK
| | - Mackenzie C Sinclair
- Department of Chemical Sciences, University of Huddersfield, Queensgate, Huddersfield, HD1 3DH, UK
| | - Luke J Smith
- Department of Chemical Sciences, University of Huddersfield, Queensgate, Huddersfield, HD1 3DH, UK
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17
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Sweeney JB, Ball AK, Lawrence PA, Sinclair MC, Smith LJ. A Simple, Broad-Scope Nickel(0) Precatalyst System for the Direct Amination of Allyl Alcohols. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201805611] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
| | - Anthony K. Ball
- Department of Chemical Sciences; University of Huddersfield; Queensgate Huddersfield HD1 3DH UK
| | - Philippa A. Lawrence
- Department of Chemical Sciences; University of Huddersfield; Queensgate Huddersfield HD1 3DH UK
| | - Mackenzie C. Sinclair
- Department of Chemical Sciences; University of Huddersfield; Queensgate Huddersfield HD1 3DH UK
| | - Luke J. Smith
- Department of Chemical Sciences; University of Huddersfield; Queensgate Huddersfield HD1 3DH UK
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18
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Li Y, Shi D, Tang Y, He X, Xu S. Rhodium(III)-Catalyzed Redox-Neutral C-H Activation/Annulation of N-Aryloxyacetamides with Alkynyloxiranes: Synthesis of Highly Functionalized 2,3-Dihydrobenzofurans. J Org Chem 2018; 83:9464-9470. [PMID: 29932658 DOI: 10.1021/acs.joc.8b01166] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Alkynyloxiranes have been employed for the first time as effective coupling partners in Cp*RhIII-catalyzed C-H functionalization reactions. Their annulation with N-aryloxyamides then offers a redox-neutral and efficient synthesis of functionalized 2,3-dihydrobenzofurans bearing an exocyclic E-allylic alcohol and a tetrasubstituted carbon center in good yields with a broad substrate scope. The products can be easily converted to molecules with more complexity, which provides an opportunity for rapid assembly of structurally diverse heterocycles.
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Affiliation(s)
- Yang Li
- Department of Chemistry, School of Science, and Xi'an Key Laboratory of Sustainable Energy Materials Chemistry , Xi'an Jiaotong University , Xi'an 710049 , PR China
| | - Dandan Shi
- Department of Chemistry, School of Science, and Xi'an Key Laboratory of Sustainable Energy Materials Chemistry , Xi'an Jiaotong University , Xi'an 710049 , PR China
| | - Yuhai Tang
- Department of Chemistry, School of Science, and Xi'an Key Laboratory of Sustainable Energy Materials Chemistry , Xi'an Jiaotong University , Xi'an 710049 , PR China
| | - Xin He
- Department of Chemistry, School of Science, and Xi'an Key Laboratory of Sustainable Energy Materials Chemistry , Xi'an Jiaotong University , Xi'an 710049 , PR China
| | - Silong Xu
- Department of Chemistry, School of Science, and Xi'an Key Laboratory of Sustainable Energy Materials Chemistry , Xi'an Jiaotong University , Xi'an 710049 , PR China
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19
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Murakami R, Sano K, Iwai T, Taniguchi T, Monde K, Sawamura M. Palladium‐Catalyzed Asymmetric C(sp
3
)−H Allylation of 2‐Alkylpyridines. Angew Chem Int Ed Engl 2018; 57:9465-9469. [DOI: 10.1002/anie.201802821] [Citation(s) in RCA: 44] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2018] [Revised: 05/14/2018] [Indexed: 01/24/2023]
Affiliation(s)
- Ryo Murakami
- Department of Chemistry Faculty of Science Hokkaido University Sapporo 060-0810 Japan
| | - Kentaro Sano
- Department of Chemistry Faculty of Science Hokkaido University Sapporo 060-0810 Japan
| | - Tomohiro Iwai
- Department of Chemistry Faculty of Science Hokkaido University Sapporo 060-0810 Japan
| | - Tohru Taniguchi
- Frontier Research Center for Advanced Material and Life Science Faculty of Advanced Life Science Hokkaido University Sapporo 001-0021 Japan
| | - Kenji Monde
- Frontier Research Center for Advanced Material and Life Science Faculty of Advanced Life Science Hokkaido University Sapporo 001-0021 Japan
| | - Masaya Sawamura
- Department of Chemistry Faculty of Science Hokkaido University Sapporo 060-0810 Japan
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20
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Murakami R, Sano K, Iwai T, Taniguchi T, Monde K, Sawamura M. Palladium‐Catalyzed Asymmetric C(sp
3
)−H Allylation of 2‐Alkylpyridines. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201802821] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Ryo Murakami
- Department of Chemistry Faculty of Science Hokkaido University Sapporo 060-0810 Japan
| | - Kentaro Sano
- Department of Chemistry Faculty of Science Hokkaido University Sapporo 060-0810 Japan
| | - Tomohiro Iwai
- Department of Chemistry Faculty of Science Hokkaido University Sapporo 060-0810 Japan
| | - Tohru Taniguchi
- Frontier Research Center for Advanced Material and Life Science Faculty of Advanced Life Science Hokkaido University Sapporo 001-0021 Japan
| | - Kenji Monde
- Frontier Research Center for Advanced Material and Life Science Faculty of Advanced Life Science Hokkaido University Sapporo 001-0021 Japan
| | - Masaya Sawamura
- Department of Chemistry Faculty of Science Hokkaido University Sapporo 060-0810 Japan
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21
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Chen D, Chen Y, Ma Z, Zou L, Li J, Liu Y. One-Pot Synthesis of Indole-3-acetic Acid Derivatives through the Cascade Tsuji-Trost Reaction and Heck Coupling. J Org Chem 2018; 83:6805-6814. [PMID: 29763306 DOI: 10.1021/acs.joc.8b01056] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A practical palladium-mediated cascade Tsuji-Trost reaction/Heck coupling of N-Ts o-bromoanilines with 4-acetoxy-2-butenonic acid derivatives using a Pd(OAc)2/P( o-tol)3/DIPEA system is described for a straightforward synthesis of indole-3-acetic acid derivatives. This methodology was successfully applied to synthesize various substituted indole/azaindole-3-acetic acid derivatives and Almotriptan, which is a drug for the acute treatment of migraines. Moreover, a plausible cyclization mechanism has been proposed.
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Affiliation(s)
- Dongsheng Chen
- Novel Technology Center of Pharmaceutical Chemistry , Shanghai Institute of Pharmaceutical Industry, China State Institute of Pharmaceutical Industry , 285 Gebaini Road , Shanghai 201203 , People's Republic of China.,Shanghai Engineering Research Center of Pharmaceutical Process , Shanghai Institute of Pharmaceutical Industry, China State Institute of Pharmaceutical Industry , 285 Gebaini Road , Shanghai 201203 , People's Republic of China
| | - Yuanyuan Chen
- Novel Technology Center of Pharmaceutical Chemistry , Shanghai Institute of Pharmaceutical Industry, China State Institute of Pharmaceutical Industry , 285 Gebaini Road , Shanghai 201203 , People's Republic of China.,Shanghai Engineering Research Center of Pharmaceutical Process , Shanghai Institute of Pharmaceutical Industry, China State Institute of Pharmaceutical Industry , 285 Gebaini Road , Shanghai 201203 , People's Republic of China
| | - Zhilong Ma
- Novel Technology Center of Pharmaceutical Chemistry , Shanghai Institute of Pharmaceutical Industry, China State Institute of Pharmaceutical Industry , 285 Gebaini Road , Shanghai 201203 , People's Republic of China.,Shanghai Engineering Research Center of Pharmaceutical Process , Shanghai Institute of Pharmaceutical Industry, China State Institute of Pharmaceutical Industry , 285 Gebaini Road , Shanghai 201203 , People's Republic of China
| | - Lei Zou
- Novel Technology Center of Pharmaceutical Chemistry , Shanghai Institute of Pharmaceutical Industry, China State Institute of Pharmaceutical Industry , 285 Gebaini Road , Shanghai 201203 , People's Republic of China.,Shanghai Engineering Research Center of Pharmaceutical Process , Shanghai Institute of Pharmaceutical Industry, China State Institute of Pharmaceutical Industry , 285 Gebaini Road , Shanghai 201203 , People's Republic of China
| | - Jianqi Li
- Novel Technology Center of Pharmaceutical Chemistry , Shanghai Institute of Pharmaceutical Industry, China State Institute of Pharmaceutical Industry , 285 Gebaini Road , Shanghai 201203 , People's Republic of China.,Shanghai Engineering Research Center of Pharmaceutical Process , Shanghai Institute of Pharmaceutical Industry, China State Institute of Pharmaceutical Industry , 285 Gebaini Road , Shanghai 201203 , People's Republic of China
| | - Yu Liu
- Novel Technology Center of Pharmaceutical Chemistry , Shanghai Institute of Pharmaceutical Industry, China State Institute of Pharmaceutical Industry , 285 Gebaini Road , Shanghai 201203 , People's Republic of China.,Shanghai Engineering Research Center of Pharmaceutical Process , Shanghai Institute of Pharmaceutical Industry, China State Institute of Pharmaceutical Industry , 285 Gebaini Road , Shanghai 201203 , People's Republic of China
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22
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Huang Y, Yan D, Wang X, Zhou P, Wu W, Jiang H. Controllable assembly of the benzothiazole framework using a CC triple bond as a one-carbon synthon. Chem Commun (Camb) 2018; 54:1742-1745. [DOI: 10.1039/c7cc09855c] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
A one-pot protocol to controllably assemble diverse benzothiazole derivatives from o-haloanilines, elemental sulfur and terminal alkynes has been realized.
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Affiliation(s)
- Yubing Huang
- Key Laboratory of Functional Molecular Engineering of Guangdong Province
- School of Chemistry and Chemical Engineering
- South China University of Technology
- Guangzhou 510640
- China
| | - Donghao Yan
- Key Laboratory of Functional Molecular Engineering of Guangdong Province
- School of Chemistry and Chemical Engineering
- South China University of Technology
- Guangzhou 510640
- China
| | - Xu Wang
- Key Laboratory of Functional Molecular Engineering of Guangdong Province
- School of Chemistry and Chemical Engineering
- South China University of Technology
- Guangzhou 510640
- China
| | - Peiqi Zhou
- 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
| | - 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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