1
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DeCicco EM, Tlapale-Lara N, Paradine SM. Incorporating azaheterocycle functionality in intramolecular aerobic, copper-catalyzed aminooxygenation of alkenes. RSC Adv 2024; 14:28822-28826. [PMID: 39257658 PMCID: PMC11386206 DOI: 10.1039/d4ra06178k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2024] [Accepted: 09/03/2024] [Indexed: 09/12/2024] Open
Abstract
Despite the maturity of alkene 1,2-difunctionalization reactions involving C-N bond formation, a key limitation across aminofunctionalization methods is incompatibility with substrates bearing medicinally relevant N-heterocycles. Using a cooperative ligand-substrate catalyst activation strategy, we have developed an aerobic, copper-catalyzed alkene aminooxygenation method that exhibits broad tolerance for β,γ-unsaturated carbamates bearing aromatic azaheterocycle substitution. The synthetic potential of this methodology was demonstrated by engaging a densely-functionalized vonoprazan analogue and elaborating an amino oxygenated product to synthesize a heteroarylated analogue precursor of the FDA-approved antibiotic chloramphenicol.
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Affiliation(s)
- Ethan M DeCicco
- Department of Chemistry, University of Rochester 120 Trustee Road Rochester NY 14627 USA
| | - Neively Tlapale-Lara
- Department of Chemistry, University of Rochester 120 Trustee Road Rochester NY 14627 USA
| | - Shauna M Paradine
- Department of Chemistry, University of Rochester 120 Trustee Road Rochester NY 14627 USA
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2
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Yang X, Chen P, Liu G. Asymmetric 1,n-Remote Aminoacetoxylation of Unactivated Internal Alkenes Enabled by Palladium Catalysis. Angew Chem Int Ed Engl 2024; 63:e202408305. [PMID: 38760326 DOI: 10.1002/anie.202408305] [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: 05/01/2024] [Accepted: 05/17/2024] [Indexed: 05/19/2024]
Abstract
A palladium-catalyzed asymmetric 1,n-remote aminoacetoxylation of cis-alkenes has been developed using PhI(OAc)2 as an oxidant, providing the acetoxylated lactams with excellent enantioselectivities under mild reaction conditions. The sterically hindered pyridine-oxazoline (Pyox) L3 with a tert-butyl group in oxazoline ring and propyl group in C6 position of pyridinyl is vital for the reaction, where the former is good for asymmetric aminopalladation step and the latter for the chain walking process. The enantioenriched lactam products were proven to be good building blocks for the synthesis of azabicycles.
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Affiliation(s)
- Xintuo Yang
- State Key Laboratory of Organometallic Chemistry, Shanghai Hongkong Joint Laboratory in Chemical Synthesis, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Road, Shanghai, 200032, China
| | - Pinhong Chen
- State Key Laboratory of Organometallic Chemistry, Shanghai Hongkong Joint Laboratory in Chemical Synthesis, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Road, Shanghai, 200032, China
| | - Guosheng Liu
- State Key Laboratory of Organometallic Chemistry, Shanghai Hongkong Joint Laboratory in Chemical Synthesis, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Road, Shanghai, 200032, China
- Chang-Kung Chuang Institute, East China Normal University, 3663 North Zhongshan Road, Shanghai, 200062, China
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3
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Maity A, Studer A. Intramolecular Radical Amidooxygenation of Alkenes for the Construction of Pyrrolidinones. Org Lett 2024. [PMID: 38814142 DOI: 10.1021/acs.orglett.4c01607] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/31/2024]
Abstract
An intramolecular 1,2-amidooxygenation of unactivated alkenes for the construction of the pyrrolidinone scaffold containing a masked 5-hydroxymethyl functionality is reported. γ,δ-Unsaturated N-aryloxyamides react with sodium 2,2,6,6-tetramethylpiperidin-1-olate (TEMPONa) to afford alkoxyaminated pyrrolidinones. The cascade proceeds through reductive amidyl radical generation with TEMPONa, 5-exo cyclization, and TEMPO trapping. No transition metal is required to perform these transformations, and complex (fused, bridged) pyrrolidinones are accessible in moderate to good yields. The product alkoxyamines are readily further converted into ketones and alcohols through either oxidation or reduction.
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Affiliation(s)
- Anirban Maity
- Organisch-Chemisches Institut, Universität Münster, 48149 Münster, Germany
| | - Armido Studer
- Organisch-Chemisches Institut, Universität Münster, 48149 Münster, Germany
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4
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Madiu R, Dellosso B, Doran EL, Doran JM, Pinarci AA, TenHoeve TM, Howard AM, Stroud JL, Rivera DA, Moskovitz DA, Finneran SJ, Singer AN, Rossi ME, Moura-Letts G. Synthesis of aminoalcohols from substituted alkenes via tungstenooxaziridine catalysis. Org Biomol Chem 2024; 22:2300-2306. [PMID: 38410027 DOI: 10.1039/d4ob00022f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/28/2024]
Abstract
Herein we report the WO2Dipic(H2O) promoted oxyamination of alkenes using sulfonamides as the quantitative source of N. The reaction works for activated and unactivated alkenes in high yields, diastereoselectivities, and stereospecificity. A catalytic cycle involving the formation of tungstenooxaziridine complex 1 as the active catalyst and hydrolysis of tungstenooxazolidine intermediate A as the rate-determining-step has been proposed. Initial kinetic and competition experiments provide evidence for the proposed mechanism.
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Affiliation(s)
- Rufai Madiu
- Department of Chemistry and Biochemistry, Rowan University, 201 Mullica Hill Rd., Glassboro, NJ, USA.
| | - Brandon Dellosso
- Department of Chemistry and Biochemistry, Rowan University, 201 Mullica Hill Rd., Glassboro, NJ, USA.
| | - Erin L Doran
- Department of Chemistry and Biochemistry, Rowan University, 201 Mullica Hill Rd., Glassboro, NJ, USA.
| | - Jenna M Doran
- Department of Chemistry and Biochemistry, Rowan University, 201 Mullica Hill Rd., Glassboro, NJ, USA.
| | - Ali A Pinarci
- Department of Chemistry and Biochemistry, Rowan University, 201 Mullica Hill Rd., Glassboro, NJ, USA.
| | - Tyler M TenHoeve
- Department of Chemistry and Biochemistry, Rowan University, 201 Mullica Hill Rd., Glassboro, NJ, USA.
| | - Amari M Howard
- Department of Chemistry and Biochemistry, Rowan University, 201 Mullica Hill Rd., Glassboro, NJ, USA.
| | - James L Stroud
- Department of Chemistry and Biochemistry, Rowan University, 201 Mullica Hill Rd., Glassboro, NJ, USA.
| | - Dominic A Rivera
- Department of Chemistry and Biochemistry, Rowan University, 201 Mullica Hill Rd., Glassboro, NJ, USA.
| | - Dylan A Moskovitz
- Department of Chemistry and Biochemistry, Rowan University, 201 Mullica Hill Rd., Glassboro, NJ, USA.
| | - Steven J Finneran
- Department of Chemistry and Biochemistry, Rowan University, 201 Mullica Hill Rd., Glassboro, NJ, USA.
| | - Alyssa N Singer
- Department of Chemistry and Biochemistry, Rowan University, 201 Mullica Hill Rd., Glassboro, NJ, USA.
| | - Morgan E Rossi
- Department of Chemistry and Biochemistry, Rowan University, 201 Mullica Hill Rd., Glassboro, NJ, USA.
| | - Gustavo Moura-Letts
- Department of Chemistry and Biochemistry, Rowan University, 201 Mullica Hill Rd., Glassboro, NJ, USA.
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5
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Su S, Zhang Y, Liu P, Wink DJ, Lee D. Intramolecular Carboxyamidation of Alkyne-Tethered O-Acylhydroxamates through Formation of Fe(III)-Nitrenoids. Chemistry 2024; 30:e202303428. [PMID: 38050744 DOI: 10.1002/chem.202303428] [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: 10/17/2023] [Revised: 11/28/2023] [Accepted: 12/04/2023] [Indexed: 12/06/2023]
Abstract
We developed intramolecular carboxyamidations of alkyne-tethered O-acylhydroxamates followed by either thermally induced spontaneous or 4-(dimethylamino)pyridine-catalyzed O→O or O→N acyl group migration. Under iron-catalyzed conditions, the carboxyamidation products were generated in high yield from both Z-alkene and arene-tethered substrates. DFT calculations indicate that the iron-catalyzed carboxyamidation proceeds via a stepwise mechanism involving iron-imidyl radical cyclization followed by intramolecular acyloxy transfer from the iron center to the alkenyl radical center to furnish the cis-carboxyamidation product. Upon treatment with 4-(dimethylamino)pyridine, the Z-alkene-tethered carboxyamidation products underwent selective O→O acyl migration to generate 2-acyloxy-5-acyl pyrroles. Thermal O→N acyl migration occurs during carboxyamidation if the Z-alkene linker contains an alkyl or an aryl substituent at the β-position of the carbonyl group. On the other hand, the arene linker-containing compounds selectively undergo O→N acyl migration to generate N-acyl-3-acylisoindolinones, and the corresponding O→O acyl migration forming isoindole derivatives was not observed.
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Affiliation(s)
- Siyuan Su
- Department of Chemistry, University of Illinois Chicago, 845 W. Taylor St., Chicago, Illinois, 60607, USA
| | - Yu Zhang
- Department of Chemistry, University of Pittsburgh, 219 Parkman Avenue, Pittsburgh, PA, 15260, USA
| | - Peng Liu
- Department of Chemistry, University of Pittsburgh, 219 Parkman Avenue, Pittsburgh, PA, 15260, USA
| | - Donald J Wink
- Department of Chemistry, University of Illinois Chicago, 845 W. Taylor St., Chicago, Illinois, 60607, USA
| | - Daesung Lee
- Department of Chemistry, University of Illinois Chicago, 845 W. Taylor St., Chicago, Illinois, 60607, USA
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6
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Kumar R. Transition-Metal-Catalyzed 1,2-Diaminations of Olefins: Synthetic Methodologies and Mechanistic Studies. Chem Asian J 2024; 19:e202300705. [PMID: 37743249 DOI: 10.1002/asia.202300705] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2023] [Revised: 09/20/2023] [Accepted: 09/20/2023] [Indexed: 09/26/2023]
Abstract
1,2-Diamines are synthetically important motifs in organo-catalysis, natural products, and drug research. Continuous utilization of transition-metal based catalyst in direct 1,2-diamination of olefines, in contrast to metal-free transformations, with numerous impressive advances made in recent years (2015-2023). This review summarized contemporary research on the transition-metal catalyzed/mediated [e. g., Cu(II), Pd(II), Fe(II), Rh(III), Ir(III), and Co(II)] 1,2-diamination (asymmetric and non-asymmetric) especially emphasizing the recent synthetic methodologies and mechanistic understandings. Moreover, up-to-date discussion on (i) paramount role of oxidant and catalyst (ii) key achievements (iii) generality and uniqueness, (iv) synthetic limitations or future challenges, and (v) future opportunities are summarized related to this potential area.
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Affiliation(s)
- Ravinder Kumar
- Department of Chemistry, MMEC, Maharishi Markandeshwar (Deemed to be University), Mullana, Ambala, 133207, Haryana, INDIA
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7
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Wang PZ, Chen JR, Xiao WJ. Emerging Trends in Copper-Promoted Radical-Involved C-O Bond Formations. J Am Chem Soc 2023; 145:17527-17550. [PMID: 37531466 DOI: 10.1021/jacs.3c04879] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/04/2023]
Abstract
The C-O bond is ubiquitous in biologically active molecules, pharmaceutical agents, and functional materials, thereby making it an important functional group. Consequently, the development of C-O bond-forming reactions using catalytic strategies has become an increasingly important research topic in organic synthesis because more conventional methods involving strong base and acid have many limitations. In contrast to the ionic-pathway-based methods, copper-promoted radical-mediated C-O bond formation is experiencing a surge in research interest owing to a renaissance in free-radical chemistry and photoredox catalysis. This Perspective highlights and appraises state-of-the-art techniques in this burgeoning research field. The contents are organized according to the different reaction types and working models.
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Affiliation(s)
- Peng-Zi Wang
- College of Chemistry, Central China Normal University, 152 Luoyu Road, Wuhan, Hubei 430079, China
| | - Jia-Rong Chen
- College of Chemistry, Central China Normal University, 152 Luoyu Road, Wuhan, Hubei 430079, China
- Wuhan Institute of Photochemistry and Technology, 7 North Bingang Road, Wuhan, Hubei 430083, China
| | - Wen-Jing Xiao
- College of Chemistry, Central China Normal University, 152 Luoyu Road, Wuhan, Hubei 430079, China
- Wuhan Institute of Photochemistry and Technology, 7 North Bingang Road, Wuhan, Hubei 430083, China
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, China
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8
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Radović A, Wolford NJ, Li H, Brennessel WW, Xu H, Neidig ML. Mechanistic Studies of Iron-PyBOX-Catalyzed Olefin Amino-Oxygenation with Functionalized Hydroxylamines. Organometallics 2023; 42:1810-1817. [PMID: 37502313 PMCID: PMC10369677 DOI: 10.1021/acs.organomet.3c00067] [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: 01/31/2023] [Indexed: 07/29/2023]
Abstract
Iron-catalyzed amino-oxygenation of olefins often uses discrete ligands to increase reactivity and broaden substrate scope. This work is focused on examining ligand effects on reactivity and in situ iron speciation in a system which utilizes a bisoxazoline ligand. Freeze-trapped 57Fe Mössbauer and EPR spectroscopies as well as SC-XRD experiments were utilized to isolate and identify the species formed during the catalytic reaction of amino-oxygenation of olefins with functionalized hydroxylamines, as well as in the precatalytic mixture of iron salt and ligand. Experiments revealed significant influence of ligand and solvent on the speciation in the precatalytic mixture which led to the formation of different species which had significant influence on the reactivity. In situ experiments showed no evidence for the formation of an Fe(IV)-nitrene intermediate, and the isolation of a reactive intermediate was unsuccessful, suggesting that the use of the PyBOX ligand led to the formation of more reactive intermediates than observed in the previously studied system, preventing direct detection of intermediate species. However, isolation of the seven coordinate Fe(III) species with three carboxylate units of the hydroxylamine and spin-trap EPR experiments suggest formation of a species with unpaired electron density on the hydroxylamine nitrogen, which is in accordance with formation of a potential iron iminyl radical species, as recently proposed in literature. An observed increase in yield when substrates devoid of C-H bonds as well as isolation of a ring-closed dead-end species with substrates containing these bonds suggests the identity of the functionalized hydroxylamine can dictate the reactivity observed in these reactions.
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Affiliation(s)
- Aleksa Radović
- Department
of Chemistry, University of Rochester, Rochester, New York 14627, USA
| | - Nikki J. Wolford
- Department
of Chemistry, University of Rochester, Rochester, New York 14627, USA
| | - Hongze Li
- Department
of Chemistry, Brandeis University, Waltham, Massachusetts 02453, USA
| | | | - Hao Xu
- Department
of Chemistry, Brandeis University, Waltham, Massachusetts 02453, USA
| | - Michael L. Neidig
- Department
of Chemistry, University of Rochester, Rochester, New York 14627, USA
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9
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Ariyarathna JP, Baskaran P, Chhikara A, Kaur N, Nguyen AM, Premathilaka SM, Huynh MM, Truong JT, Li W. Tunable [3+2] and [4+2] annulations for pyrrolidine and piperidine synthesis. Chem Commun (Camb) 2023; 59:6418-6421. [PMID: 37161704 PMCID: PMC10297810 DOI: 10.1039/d3cc01400b] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/11/2023]
Abstract
N-heterocycles are privileged pharmaceutical scaffolds in drug discovery and development. We disclose here divergent intermolecular coupling strategies that can access diverse N-heterocycles directly from olefins. The radical-to-polar mechanistic switching is key for the divergent cyclization processes. These distinctive annulations result in the coupling of alkenes with simple bifunctional reagents for divergent N-heterocycle syntheses.
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Affiliation(s)
- Jeewani P Ariyarathna
- Department of Chemistry and Biochemistry and School of Green Chemistry and Engineering, The University of Toledo, Toledo, Ohio 43606, USA.
| | - Prabagar Baskaran
- Department of Chemistry and Biochemistry and School of Green Chemistry and Engineering, The University of Toledo, Toledo, Ohio 43606, USA.
| | - Akanksha Chhikara
- Department of Chemistry and Biochemistry and School of Green Chemistry and Engineering, The University of Toledo, Toledo, Ohio 43606, USA.
| | - Navdeep Kaur
- Department of Chemistry and Biochemistry and School of Green Chemistry and Engineering, The University of Toledo, Toledo, Ohio 43606, USA.
| | - Alex M Nguyen
- Department of Chemistry and Biochemistry and School of Green Chemistry and Engineering, The University of Toledo, Toledo, Ohio 43606, USA.
| | - Shashini M Premathilaka
- Department of Chemistry and Biochemistry and School of Green Chemistry and Engineering, The University of Toledo, Toledo, Ohio 43606, USA.
| | - Michelle M Huynh
- Department of Chemistry and Biochemistry and School of Green Chemistry and Engineering, The University of Toledo, Toledo, Ohio 43606, USA.
| | - Jonathon T Truong
- Department of Chemistry and Biochemistry and School of Green Chemistry and Engineering, The University of Toledo, Toledo, Ohio 43606, USA.
| | - Wei Li
- Department of Chemistry and Biochemistry and School of Green Chemistry and Engineering, The University of Toledo, Toledo, Ohio 43606, USA.
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10
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Iron-Catalyzed Intermolecular Oxyamination of Terminal Alkenes Promoted by HFIP Using Hydroxylamine Derivatives. J Org Chem 2023; 88:4720-4729. [PMID: 36939110 DOI: 10.1021/acs.joc.3c00198] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/21/2023]
Abstract
An atom-economical intermolecular iron-catalyzed oxyamination of alkenes is described herein. The insertion of oxygenated and nitrogenated moieties from the hydroxylamine substrate was observed with full regio- and chemo-selectivity for terminal alkenes in good yields. HFIP as a solvent appeared to have a synergistic effect with the iron catalyst to promote the formation of the oxyaminated products. Preliminary mechanistic studies suggest a pathway going through an aziridination reaction followed by an in situ ring opening.
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11
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Su S, Wu T, Xia Y, Wink DJ, Lee D. Cycloisomerization of Alkyne-Tethered N-Acyloxycarbamates to 2-(3H)Oxazolones through Nitrenoid-Mediated Carboxyamidation. Chemistry 2023; 29:e202203371. [PMID: 36628950 DOI: 10.1002/chem.202203371] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2022] [Revised: 01/09/2023] [Accepted: 01/10/2023] [Indexed: 01/12/2023]
Abstract
The cycloisomerization of alkyne-tethered N-benzoyloxycarbamates to 2-(3H)oxazolones is described. Two catalytic systems are tailored for intramolecular 5-exo-alkyne carboxyamidation and concomitant alkene isomerization. PtCl2 /CO (5 mol%, toluene, 100 °C) promotes both carboxyamidation and alkene isomerization but has a limited substrate scope. On the other hand, FeCl3 (5 mol%, CH3 CN, 100 °C) promotes carboxyamidation effectively but a cocatalyst is required for the exocyclic alkene isomerization. Thus, a two-step one-pot protocol has been developed for a broader reaction scope, which involves FeCl3 -catalyzed carboxyamidation and base-induced alkene isomerization. Crossover experiments suggest that these reactions proceed mainly through a mechanism involving acylnitrenoid intermediates rather than carbenoid intermediates.
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Affiliation(s)
- Siyuan Su
- Department of Chemistry, University of Illinois Chicago, 845 W. Taylor St., Chicago, Illinois, 60607, USA
| | - Tongtong Wu
- College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou, Zhejiang Province, 325035, P. R. China
| | - Yuanzhi Xia
- College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou, Zhejiang Province, 325035, P. R. China
| | - Donald J Wink
- Department of Chemistry, University of Illinois Chicago, 845 W. Taylor St., Chicago, Illinois, 60607, USA
| | - Daesung Lee
- Department of Chemistry, University of Illinois Chicago, 845 W. Taylor St., Chicago, Illinois, 60607, USA
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12
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Huang H, Lambert TH. Regiodivergent Electrophotocatalytic Aminooxygenation of Aryl Olefins. J Am Chem Soc 2022; 144:18803-18809. [PMID: 36194776 PMCID: PMC10405276 DOI: 10.1021/jacs.2c08951] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
A method for the regiodivergent aminooxygenation of aryl olefins under electrophotocatalytic conditions is described. The procedure employs a trisaminocyclopropenium (TAC) ion catalyst with visible light irradiation under a controlled electrochemical potential to convert aryl olefins to the corresponding oxazolines with high chemo- and diastereoselectivity. With the judicious choice between two inexpensive and abundant reagents, namely water and urethane, either 2-amino-1-ol or 1-amino-2-ol derivatives could be prepared from the same substrate. This method is amenable to multigram synthesis of the oxazoline products with low catalyst loadings.
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Affiliation(s)
- He Huang
- Department of Chemistry and Chemical Biology, Cornell University, Ithaca, New York 14853, United States
| | - Tristan H Lambert
- Department of Chemistry and Chemical Biology, Cornell University, Ithaca, New York 14853, United States
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13
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Yang X, Hong K, Zhang S, Zhang Z, Zhou S, Huang J, Xu X, Hu W. Asymmetric Three-Component Reaction of Two Diazo Compounds and Hyrdroxylamine Derivatives for the Access to Chiral α-Alkoxy-β-amino-carboxylates. ACS Catal 2022. [DOI: 10.1021/acscatal.2c02541] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Xiangji Yang
- Guangdong Provincial Key Laboratory of Chiral Molecule and Drug Discovery, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, China
| | - Kemiao Hong
- Guangdong Provincial Key Laboratory of Chiral Molecule and Drug Discovery, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, China
| | - Sujie Zhang
- Guangdong Provincial Key Laboratory of Chiral Molecule and Drug Discovery, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, China
| | - Zhijing Zhang
- Guangdong Provincial Key Laboratory of Chiral Molecule and Drug Discovery, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, China
| | - Su Zhou
- Guangdong Provincial Key Laboratory of Chiral Molecule and Drug Discovery, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, China
| | - Jingjing Huang
- Guangdong Provincial Key Laboratory of Chiral Molecule and Drug Discovery, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, China
| | - Xinfang Xu
- Guangdong Provincial Key Laboratory of Chiral Molecule and Drug Discovery, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, China
| | - Wenhao Hu
- Guangdong Provincial Key Laboratory of Chiral Molecule and Drug Discovery, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, China
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14
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Cariello Silva G, de Souza GFP, Salles AG. Catalytic redox-neutral C-H functionalisation with TEMPO in water to access aminomethyl-substituted pyrroles. Org Biomol Chem 2022; 20:3495-3500. [PMID: 35416824 DOI: 10.1039/d2ob00574c] [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
A redox-neutral C-H functionalisation in water employing catalytic TEMPO to synthesize aminomethyl-substituted pyrroles is reported. Starting from cheap and commercial chemical feedstocks (ketoesters and anilines), our approach delivered targeted products in good yields and represents an endeavour to address redox economy in radical transformations.
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Affiliation(s)
- Guilherme Cariello Silva
- Department of Organic Chemistry, Institute of Chemistry, University of Campinas, P.O. Box 6154, Campinas, SP 13084-862, Brazil.
| | - Gabriela F P de Souza
- Department of Organic Chemistry, Institute of Chemistry, University of Campinas, P.O. Box 6154, Campinas, SP 13084-862, Brazil.
| | - Airton G Salles
- Department of Organic Chemistry, Institute of Chemistry, University of Campinas, P.O. Box 6154, Campinas, SP 13084-862, Brazil.
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15
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Pratley C, Fenner S, Murphy JA. Nitrogen-Centered Radicals in Functionalization of sp 2 Systems: Generation, Reactivity, and Applications in Synthesis. Chem Rev 2022; 122:8181-8260. [PMID: 35285636 DOI: 10.1021/acs.chemrev.1c00831] [Citation(s) in RCA: 98] [Impact Index Per Article: 49.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
The chemistry of nitrogen-centered radicals (NCRs) has plentiful applications in organic synthesis, and they continue to expand as our understanding of these reactive species increases. The utility of these reactive intermediates is demonstrated in the recent advances in C-H amination and the (di)amination of alkenes. Synthesis of previously challenging structures can be achieved by efficient functionalization of sp2 moieties without prefunctionalization, allowing for faster and more streamlined synthesis. This Review addresses the generation, reactivity, and application of NCRs, including, but not limited to, iminyl, aminyl, amidyl, and aminium species. Contributions from early discovery up to the most recent examples have been highlighted, covering radical initiation, thermolysis, photolysis, and, more recently, photoredox catalysis. Radical-mediated intermolecular amination of (hetero)arenes can occur with a variety of complex amine precursors, generating aniline derivatives, an important class of structures for drug discovery and development. Functionalization of olefins is achievable in high anti-Markovnikov regioselectivity and allows access to difunctionalized structures when the intermediate carbon radicals are trapped. Additionally, the reactivity of NCRs can be harnessed for the rapid construction of N-heterocycles such as pyrrolidines, phenanthridines, quinoxalines, and quinazolinones.
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Affiliation(s)
- Cassie Pratley
- Department of Pure and Applied Chemistry, University of Strathclyde, 295 Cathedral Street, Glasgow G1 1XL, United Kingdom.,GSK Medicines Research Centre, Gunnels Wood Road, Stevenage, Herts SG1 2NY, United Kingdom
| | - Sabine Fenner
- GSK Medicines Research Centre, Gunnels Wood Road, Stevenage, Herts SG1 2NY, United Kingdom
| | - John A Murphy
- Department of Pure and Applied Chemistry, University of Strathclyde, 295 Cathedral Street, Glasgow G1 1XL, United Kingdom
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16
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Wang JL, Liu ML, Zou JY, Sun WH, Liu XY. Copper-Catalyzed Aminoarylation of Alkenes via Aminyl Radical Addition and Aryl Migration. Org Lett 2021; 24:309-313. [PMID: 34931822 DOI: 10.1021/acs.orglett.1c03973] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
We describe a new strategy for aminoarylation of alkenes by copper-catalyzed smiles rearrangement using O-benzoylhydroxylamines as the amine reagent. This method affords various β-amino amide derivatives possessing a quaternary carbon center with wide functional group tolerance and high regioselectivity. The mechanistic studies indicate that the transformation can involve aminyl radical intermediates under acid-free condition.
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Affiliation(s)
- Jin-Lin Wang
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, China
| | - Mei-Ling Liu
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, China
| | - Jian-Yu Zou
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, China
| | - Wen-Hui Sun
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, China
| | - Xue-Yuan Liu
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, China
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17
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Hirose J, Wakikawa T, Satake S, Kojima M, Hatano M, Ishihara K, Yoshino T, Matsunaga S. Cp*Rh III/Chiral Disulfonate/CuOAc Catalyst System for the Enantioselective Intramolecular Oxyamination of Alkenes. ACS Catal 2021. [DOI: 10.1021/acscatal.1c04699] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Jumpei Hirose
- Faculty of Pharmaceutical Sciences, Hokkaido University, Sapporo 060-0812, Japan
| | - Takumi Wakikawa
- Faculty of Pharmaceutical Sciences, Hokkaido University, Sapporo 060-0812, Japan
| | - Shun Satake
- Faculty of Pharmaceutical Sciences, Hokkaido University, Sapporo 060-0812, Japan
| | - Masahiro Kojima
- Faculty of Pharmaceutical Sciences, Hokkaido University, Sapporo 060-0812, Japan
| | - Manabu Hatano
- Graduate School of Pharmaceutical Sciences, Kobe Pharmaceutical University, Kobe 658-8558, Japan
| | - Kazuaki Ishihara
- Graduate School of Engineering, Nagoya University, Nagoya 464-8603, Japan
| | - Tatsuhiko Yoshino
- Faculty of Pharmaceutical Sciences, Hokkaido University, Sapporo 060-0812, Japan
- Global Station for Biosurfaces and Drug Discovery, Hokkaido University, Sapporo 060-0812, Japan
| | - Shigeki Matsunaga
- Faculty of Pharmaceutical Sciences, Hokkaido University, Sapporo 060-0812, Japan
- Global Station for Biosurfaces and Drug Discovery, Hokkaido University, Sapporo 060-0812, Japan
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18
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Kong Y, Cao T, Zhu S. TEMPO‐Regulated
Regio‐ and Stereoselective
Cross‐Dihalogenation
with Dual Electrophilic X
+
Reagents. CHINESE J CHEM 2021. [DOI: 10.1002/cjoc.202100472] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Affiliation(s)
- Yi Kong
- Key Laboratory of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology Guangzhou Guangdong 510640 China
| | - Tongxiang Cao
- Key Laboratory of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology Guangzhou Guangdong 510640 China
| | - Shifa Zhu
- Key Laboratory of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology Guangzhou Guangdong 510640 China
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19
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Matsumoto A, Shiozaki Y, Sakurai S, Maruoka K. Synthesis of Functionalized Aliphatic Acid Esters via the Generation of Alkyl Radicals from Silylperoxyacetals. Chem Asian J 2021; 16:2431-2434. [PMID: 34278735 DOI: 10.1002/asia.202100723] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2021] [Revised: 07/16/2021] [Indexed: 12/28/2022]
Abstract
We describe a catalytic method for the synthesis of a variety of functionalized aliphatic acid esters using silylperoxyacetals, which are versatile alkyl radical precursors with a terminal ester moiety. In the presence of an appropriate transition-metal catalyst, the in situ generation of alkyl radicals and the subsequent bond-forming process proceeds smoothly to afford synthetically valuable aliphatic acid derivatives. The present method can be applied to the efficient synthesis of a pharmaceutically important 1,1-diarylalkane motif. In addition, a novel strategy for the synthesis of structurally diverse hydroxy acid derivatives via a C-O bond formation process that utilizes TEMPO has been developed.
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Affiliation(s)
- Akira Matsumoto
- Graduate School of Pharmaceutical Sciences, Kyoto University, Sakyo, 606-8501, Kyoto, Japan
| | - Yoko Shiozaki
- Department of Chemistry, Graduate School of Science, Kyoto University, Sakyo, 606-8502, Kyoto, Japan
| | - Shunya Sakurai
- Department of Chemistry, Graduate School of Science, Kyoto University, Sakyo, 606-8502, Kyoto, Japan
| | - Keiji Maruoka
- Graduate School of Pharmaceutical Sciences, Kyoto University, Sakyo, 606-8501, Kyoto, Japan.,Department of Chemistry, Graduate School of Science, Kyoto University, Sakyo, 606-8502, Kyoto, Japan.,School of Chemical Engineering and Light Industry, Guangdong University of Technology, 510006, Guangzhou, P. R. China
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20
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Mumford EM, Hemric BN, Denmark SE. Catalytic, Enantioselective Syn-Oxyamination of Alkenes. J Am Chem Soc 2021; 143:13408-13417. [PMID: 34375090 DOI: 10.1021/jacs.1c06750] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
The chemo-, regio-, diastereo-, and enantioselective 1,2-oxyamination of alkenes using selenium(II/IV) catalysis with a chiral diselenide catalyst is reported. This method uses N-tosylamides to generate oxazoline products that are useful both as protected 1,2-amino alcohol motifs and as chiral ligands. The reaction proceeds in good yields with excellent enantio- and diastereoselectivity for a variety of alkenes and pendant functional groups such as sulfonamides, alkyl halides, and glycol-protected ketones. Furthermore, the rapid generation of oxazoline products is demonstrated in the expeditious assembly of chiral PHOX ligands as well as diversely protected amino alcohols.
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Affiliation(s)
- Emily M Mumford
- Roger Adams Laboratory, Department of Chemistry, University of Illinois, Urbana, Illinois 61801, United States
| | - Brett N Hemric
- Roger Adams Laboratory, Department of Chemistry, University of Illinois, Urbana, Illinois 61801, United States
| | - Scott E Denmark
- Roger Adams Laboratory, Department of Chemistry, University of Illinois, Urbana, Illinois 61801, United States
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21
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Wu F, Kaur N, Alom NE, Li W. Chiral Hypervalent Iodine Catalysis Enables an Unusual Regiodivergent Intermolecular Olefin Aminooxygenation. JACS AU 2021; 1:734-741. [PMID: 34240078 PMCID: PMC8243328 DOI: 10.1021/jacsau.1c00103] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/04/2023]
Abstract
A novel iodide-catalyzed intermolecular aminooxygenation strategy is described here. Amide is used as the O- and N- source to probe for regiocontrol strategies. Notably, simple additives can be selectively introduced to achieve regiodivergent oxyamination processes for electronically activated alkenes while being regio-complementary for unactivated alkenes. Our preliminary data demonstrates that this regiocontrol strategy based on nucleophile can also be applied in asymmetric processes using chiral hypervalent iodine catalysis.
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Affiliation(s)
- Fan Wu
- Department of Chemistry and Biochemistry,
School of Green Chemistry and Engineering, The University of Toledo, 2801 West Bancroft Street, Toledo, Ohio 43606, United
States
| | - Navdeep Kaur
- Department of Chemistry and Biochemistry,
School of Green Chemistry and Engineering, The University of Toledo, 2801 West Bancroft Street, Toledo, Ohio 43606, United
States
| | - Nur-E Alom
- Department of Chemistry and Biochemistry,
School of Green Chemistry and Engineering, The University of Toledo, 2801 West Bancroft Street, Toledo, Ohio 43606, United
States
| | - Wei Li
- Department of Chemistry and Biochemistry,
School of Green Chemistry and Engineering, The University of Toledo, 2801 West Bancroft Street, Toledo, Ohio 43606, United
States
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22
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Zhang LW, Deng XJ, Zhang DX, Tian QQ, He W. Aminolactonization of Unactivated Alkenes Catalyzed by Aryl Iodine. J Org Chem 2021; 86:5152-5165. [PMID: 33760610 DOI: 10.1021/acs.joc.1c00074] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A one-step protocol of the aryl iodine-catalyzed aminolactonization of unactivated alkenes under oxidation conditions was first reported to efficiently construct diverse amino lactones in a short time using HNTs2 as the compatible nitrogen source. In addition, we investigated the influence of the reaction rate based on the structure of the iodoarene precatalyst, which revealed the selective adjustment effect on aminolactonization and oxylactonization. Finally, preliminary experiments verified the feasibility of asymmetric aminolactonization catalyzed by a chiral iodoarene precatalyst.
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Affiliation(s)
- Lu-Wen Zhang
- Department of Chemistry, School of Pharmacy, The Fourth Military Medical University, Xi'an, 710032, China
| | - Xiao-Jun Deng
- Department of Chemistry, School of Pharmacy, The Fourth Military Medical University, Xi'an, 710032, China
| | - Dong-Xu Zhang
- Department of Medicinal Chemistry, School of Pharmacy, The Fourth Military Medical University, Xi'an, 710032, China
| | - Qin-Qin Tian
- Department of Chemistry, School of Pharmacy, The Fourth Military Medical University, Xi'an, 710032, China
| | - Wei He
- Department of Chemistry, School of Pharmacy, The Fourth Military Medical University, Xi'an, 710032, China
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23
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Foster D, Gao P, Zhang Z, Sipos G, Sobolev AN, Nealon G, Falivene L, Cavallo L, Dorta R. Design, scope and mechanism of highly active and selective chiral NHC-iridium catalysts for the intramolecular hydroamination of a variety of unactivated aminoalkenes. Chem Sci 2021; 12:3751-3767. [PMID: 34163649 PMCID: PMC8179506 DOI: 10.1039/d0sc05884j] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2020] [Accepted: 01/04/2021] [Indexed: 01/28/2023] Open
Abstract
Chiral, cationic NHC-iridium complexes are introduced as catalysts for the intramolecular hydroamination reaction of unactivated aminoalkenes. The catalysts show high activity in the construction of a range of 5- and 6-membered N-heterocycles, which are accessed in excellent optical purity, with various functional groups being tolerated with this system. A major deactivation pathway is presented and eliminated by using alternative reaction conditions. A detailed experimental and computational study on the reaction mechanism is performed providing valuable insights into the mode of action of the catalytic system and pointing to future modifications to be made for this catalytic platform.
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Affiliation(s)
- Daven Foster
- Department of Chemistry, School of Molecular Sciences, University of Western Australia M310, 35 Stirling Highway 6009 Perth WA Australia
| | - Pengchao Gao
- Department of Chemistry, School of Molecular Sciences, University of Western Australia M310, 35 Stirling Highway 6009 Perth WA Australia
| | - Ziyun Zhang
- King Abdullah University of Science and Technology (KAUST), Chemical and Life Sciences and Engineering, Kaust Catalysis Center Thuwal 23955-6900 Saudi Arabia
| | - Gellért Sipos
- Department of Chemistry, School of Molecular Sciences, University of Western Australia M310, 35 Stirling Highway 6009 Perth WA Australia
| | - Alexandre N Sobolev
- Centre for Microscopy, Characterisation and Analysis, University of Western Australia 35 Stirling Highway 6009 Perth WA Australia
| | - Gareth Nealon
- Centre for Microscopy, Characterisation and Analysis, University of Western Australia 35 Stirling Highway 6009 Perth WA Australia
| | - Laura Falivene
- King Abdullah University of Science and Technology (KAUST), Chemical and Life Sciences and Engineering, Kaust Catalysis Center Thuwal 23955-6900 Saudi Arabia
| | - Luigi Cavallo
- King Abdullah University of Science and Technology (KAUST), Chemical and Life Sciences and Engineering, Kaust Catalysis Center Thuwal 23955-6900 Saudi Arabia
| | - Reto Dorta
- Department of Chemistry, School of Molecular Sciences, University of Western Australia M310, 35 Stirling Highway 6009 Perth WA Australia
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24
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Hemric BN. Beyond osmium: progress in 1,2-amino oxygenation of alkenes, 1,3-dienes, alkynes, and allenes. Org Biomol Chem 2021; 19:46-81. [PMID: 33174579 DOI: 10.1039/d0ob01938k] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Olefin 1,2-difunctionalization has emerged as a popular strategy within modern synthetic chemistry for the synthesis of vicinal amino alcohols and derivatives. The advantage of this approach is the single-step simplicity for rapid diversification, feedstock nature of the olefin starting materials, and the possible modularity of the components. Although there is a vast number of possible iterations of 1,2-olefin difunctionalization, 1,2-amino oxygenation is of particular interest due to the prevalence of both oxygen and nitrogen within pharmaceuticals, natural products, agrochemicals, and synthetic ligands. The Sharpless amino hydroxylation provided seminal results in this field and displayed the value in achieving methods of this nature. However, a vast number of new and novel methods have emerged in recent decades. This review provides a comprehensive review of modern advances in accomplishing 1,2-amino oxygenation of alkenes, 1,3-dienes, alkynes, and allenes that move beyond osmium to a range of other transition metals and more modern strategies such as electrochemical, photochemical, and biochemical reactivity.
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Affiliation(s)
- Brett N Hemric
- Department of Chemistry, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA.
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25
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Patra T, Das M, Daniliuc CG, Glorius F. Metal-free photosensitized oxyimination of unactivated alkenes with bifunctional oxime carbonates. Nat Catal 2021. [DOI: 10.1038/s41929-020-00553-2] [Citation(s) in RCA: 60] [Impact Index Per Article: 20.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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26
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Deng XJ, Liu HX, Zhang LW, Zhang GY, Yu ZX, He W. Iodoarene-Catalyzed Oxyamination of Unactivated Alkenes to Synthesize 5-Imino-2-Tetrahydrofuranyl Methanamine Derivatives. J Org Chem 2020; 86:235-253. [PMID: 33336571 DOI: 10.1021/acs.joc.0c02047] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
Reported here is the room-temperature metal-free iodoarene-catalyzed oxyamination of unactivated alkenes. In this process, the alkenes are difunctionalized by the oxygen atom of the amide group and the nitrogen in an exogenous HNTs2 molecule. This mild and open-air reaction provided an efficient synthesis to N-bistosyl-substituted 5-imino-2-tetrahydrofuranyl methanamine derivatives, which are important motifs in drug development and biological studies. Mechanistic study based on experiments and density functional theory calculations showed that this transformation proceeds via activation of the substrate alkene by an in situ generated cationic iodonium(III) intermediate, which is subsequently attacked by an oxygen atom (instead of nitrogen) of amides to form a five-membered ring intermediate. Finally, this intermediate undergoes an SN2 reaction by NTs2 as the nucleophile to give the oxygen and nitrogen difunctionalized 5-imino-2-tetrahydrofuranyl methanamine product. An asymmetric variant of the present alkene oxyamination using chiral iodoarenes as catalysts also gave promising results for some of the substrates.
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Affiliation(s)
- Xiao-Jun Deng
- Department of Chemistry, School of Pharmacy, Fourth Military Medical University, Xi'an 710032, China
| | - Hui-Xia Liu
- Department of Chemistry, School of Pharmacy, Fourth Military Medical University, Xi'an 710032, China
| | - Lu-Wen Zhang
- Department of Chemistry, School of Pharmacy, Fourth Military Medical University, Xi'an 710032, China
| | - Guan-Yu Zhang
- Beijing National Laboratory for Molecular Sciences (BNLMS), Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, College of Chemistry, Peking University, Beijing 100871, China
| | - Zhi-Xiang Yu
- Beijing National Laboratory for Molecular Sciences (BNLMS), Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, College of Chemistry, Peking University, Beijing 100871, China
| | - Wei He
- Department of Chemistry, School of Pharmacy, Fourth Military Medical University, Xi'an 710032, China
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27
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Millimaci AM, Meador RIL, Dampf SJ, Chisholm JD. Metal Free Amino‐Oxidation of Electron Rich Alkenes Mediated by an Oxoammonium Salt. Isr J Chem 2020. [DOI: 10.1002/ijch.202000080] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Alexandra M. Millimaci
- Department of Chemistry Syracuse University, 1-014 Center for Science and Technology Syracuse NY 13244
| | - Rowan I. L. Meador
- Department of Chemistry Syracuse University, 1-014 Center for Science and Technology Syracuse NY 13244
| | - Sara J. Dampf
- Department of Chemistry Syracuse University, 1-014 Center for Science and Technology Syracuse NY 13244
| | - John D. Chisholm
- Department of Chemistry Syracuse University, 1-014 Center for Science and Technology Syracuse NY 13244
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28
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Lee JW, Lim S, Maienshein DN, Liu P, Ngai MY. Redox-Neutral TEMPO Catalysis: Direct Radical (Hetero)Aryl C-H Di- and Trifluoromethoxylation. Angew Chem Int Ed Engl 2020; 59:21475-21480. [PMID: 32830430 PMCID: PMC7720849 DOI: 10.1002/anie.202009490] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2020] [Revised: 08/12/2020] [Indexed: 12/15/2022]
Abstract
Applications of TEMPO. catalysis for the development of redox-neutral transformations are rare. Reported here is the first TEMPO. -catalyzed, redox-neutral C-H di- and trifluoromethoxylation of (hetero)arenes. The reaction exhibits a broad substrate scope, has high functional-group tolerance, and can be employed for the late-stage functionalization of complex druglike molecules. Kinetic measurements, isolation and resubjection of catalytic intermediates, UV/Vis studies, and DFT calculations support the proposed oxidative TEMPO. /TEMPO+ redox catalytic cycle. Mechanistic studies also suggest that Li2 CO3 plays an important role in preventing catalyst deactivation. These findings will provide new insights into the design and development of novel reactions through redox-neutral TEMPO. catalysis.
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Affiliation(s)
- Johnny W Lee
- Department of Chemistry and Institute of Chemical Biology and Drug Discovery, State University of New York, Stony Brook, NY, 11794, USA
| | - Sanghyun Lim
- Department of Chemistry and Institute of Chemical Biology and Drug Discovery, State University of New York, Stony Brook, NY, 11794, USA
| | - Daniel N Maienshein
- Department of Chemistry, University of Pittsburgh, Pittsburgh, PA, 15260, USA
| | - Peng Liu
- Department of Chemistry, University of Pittsburgh, Pittsburgh, PA, 15260, USA
| | - Ming-Yu Ngai
- Department of Chemistry and Institute of Chemical Biology and Drug Discovery, State University of New York, Stony Brook, NY, 11794, USA
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29
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Lee JW, Lim S, Maienshein DN, Liu P, Ngai M. Redox‐Neutral TEMPO Catalysis: Direct Radical (Hetero)Aryl C−H Di‐ and Trifluoromethoxylation. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202009490] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Johnny W. Lee
- Department of Chemistry and Institute of Chemical Biology and Drug Discovery State University of New York Stony Brook NY 11794 USA
| | - Sanghyun Lim
- Department of Chemistry and Institute of Chemical Biology and Drug Discovery State University of New York Stony Brook NY 11794 USA
| | | | - Peng Liu
- Department of Chemistry University of Pittsburgh Pittsburgh PA 15260 USA
| | - Ming‐Yu Ngai
- Department of Chemistry and Institute of Chemical Biology and Drug Discovery State University of New York Stony Brook NY 11794 USA
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30
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Wdowik T, Galster SL, Carmo RLL, Chemler SR. Enantioselective, Aerobic Copper-Catalyzed Intramolecular Carboamination and Carboetherification of Unactivated Alkenes. ACS Catal 2020; 10:8535-8541. [PMID: 34306802 PMCID: PMC8293922 DOI: 10.1021/acscatal.0c02607] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Reduction of waste is an important goal of modern organic synthesis. We report herein oxidase reactivity for enantioselective intramolecular copper-catalyzed alkene carboamination and carboetherification reactions where previously used stoichiometric MnO2 has been replaced with oxygen. This substitution was risky as the reaction mechanism is thought to involve C-C bond formation via addition of alkyl carbon radicals to arenes. Such intermediates are also susceptible to C-O bond formation via O2 addition. Control of absolute stereochemistry under aerobic conditions was also uncertain. The oxidative cyclization efficiencies appear to track with the ease of the radical addition to the arenes.
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Affiliation(s)
- Tomasz Wdowik
- Department of Chemistry, State University of New York at Buffalo, Buffalo, New York 14260, United States
| | - Samuel L Galster
- Department of Chemistry, State University of New York at Buffalo, Buffalo, New York 14260, United States
| | - Raul L L Carmo
- Department of Chemistry, State University of New York at Buffalo, Buffalo, New York 14260, United States
| | - Sherry R Chemler
- Department of Chemistry, State University of New York at Buffalo, Buffalo, New York 14260, United States
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31
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Tan Y, Han F, Hemming M, Wang J, Harms K, Xie X, Meggers E. Asymmetric Ring-Closing Aminooxygenation of Alkenes en Route to 2-Amino-1,3-Diols with Vicinal Stereocenters. Org Lett 2020; 22:6653-6656. [DOI: 10.1021/acs.orglett.0c02452] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Yuqi Tan
- Fachbereich Chemie, Philipps-Universität Marburg, Hans-Meerwein-Strasse 4, 35043 Marburg, Germany
| | - Feng Han
- Fachbereich Chemie, Philipps-Universität Marburg, Hans-Meerwein-Strasse 4, 35043 Marburg, Germany
| | - Marcel Hemming
- Fachbereich Chemie, Philipps-Universität Marburg, Hans-Meerwein-Strasse 4, 35043 Marburg, Germany
| | - Jie Wang
- Fachbereich Chemie, Philipps-Universität Marburg, Hans-Meerwein-Strasse 4, 35043 Marburg, Germany
| | - Klaus Harms
- Fachbereich Chemie, Philipps-Universität Marburg, Hans-Meerwein-Strasse 4, 35043 Marburg, Germany
| | - Xiulan Xie
- Fachbereich Chemie, Philipps-Universität Marburg, Hans-Meerwein-Strasse 4, 35043 Marburg, Germany
| | - Eric Meggers
- Fachbereich Chemie, Philipps-Universität Marburg, Hans-Meerwein-Strasse 4, 35043 Marburg, Germany
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32
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Li S, Li Y, Feng B, Liang J, You G, Liu X, Xian L. Bi(iii)-catalyzed aminooxygenation of propargyl amidines to synthesize 2-fluoroalkyl imidazole-5-carbaldehydes and their decarbonylations. Chem Commun (Camb) 2020; 56:6400-6403. [PMID: 32390034 DOI: 10.1039/d0cc02143a] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
The first example of main group metal Bi(iii)-catalyzed aminooxygenation of fluorinated propargyl amidines was developed to produce 2-fluoroalkyl imidazole-5-carbaldehydes in moderate to excellent yields, in which phenol played a critical role and could be recovered and recycled. In the presence of KOt-Bu, an unconventional decarbonylation occurred on the 2-fluoroalkyl imidazole-5-carbaldehydes.
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Affiliation(s)
- Shan Li
- Key Laboratory of Regional Ecological Environment Analysis and Pollution Control of West Guangxi, College of Chemistry and Environment Engineering, Baise University, 21 Zhongshan No. 2 Road, Baise, 533000, China.
| | - Yajun Li
- State Key Laboratory of Structural Chemistry, Key Laboratory of Coal to Ethylene Glycol and Its Related Technology, Center for Excellence in Molecular Synthesis, Fujian Institute of Research on the Structure of Matter, University of Chinese Academy of Sciences, 155 Yangqiao Road West, Fuzhou, 350002, China
| | - Bin Feng
- Key Laboratory of Regional Ecological Environment Analysis and Pollution Control of West Guangxi, College of Chemistry and Environment Engineering, Baise University, 21 Zhongshan No. 2 Road, Baise, 533000, China.
| | - Jian Liang
- Key Laboratory of Regional Ecological Environment Analysis and Pollution Control of West Guangxi, College of Chemistry and Environment Engineering, Baise University, 21 Zhongshan No. 2 Road, Baise, 533000, China.
| | - Geyun You
- Key Laboratory of Regional Ecological Environment Analysis and Pollution Control of West Guangxi, College of Chemistry and Environment Engineering, Baise University, 21 Zhongshan No. 2 Road, Baise, 533000, China.
| | - Xiaofeng Liu
- Key Laboratory of Regional Ecological Environment Analysis and Pollution Control of West Guangxi, College of Chemistry and Environment Engineering, Baise University, 21 Zhongshan No. 2 Road, Baise, 533000, China.
| | - Liqing Xian
- School of Materials Science and Engineering, Baise University, Baise, 533000, China
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33
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Kwon Y, Wang Q. Copper-Catalyzed 1,2-Aminocyanation of Unactivated Alkenes via Cyano Migration. Org Lett 2020; 22:4141-4145. [PMID: 32383382 DOI: 10.1021/acs.orglett.0c01217] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A copper-catalyzed aminocyanation of alkenes has been achieved through distal cyano migration using O-benzoylhydroxylamines and N-fluorobenzenesulfonimides. This method offers a rapid approach to generate diverse β-amino and β-sulfonimido nitriles. These reactions feature mild conditions, tolerance of sensitive functional groups, and excellent regioselectivity. Mechanistic studies suggest that these transformations are initiated by a copper-catalyzed amination step followed by a cyano migration step.
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Affiliation(s)
- Yungeun Kwon
- Department of Chemistry, Duke University, Durham, North Carolina 27708, United States
| | - Qiu Wang
- Department of Chemistry, Duke University, Durham, North Carolina 27708, United States
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34
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Humne VT, Ulhe AG. Copper-mediated rapid and facile oxidative dehydrogenation of dihydrobenzocarbazoles. SYNTHETIC COMMUN 2020. [DOI: 10.1080/00397911.2020.1731757] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Affiliation(s)
- Vivek T. Humne
- Department of Chemistry, Shri R. R. Lahoti Science College, Morshi, India
| | - Avinash G. Ulhe
- Department of Chemistry, Shri R. R. Lahoti Science College, Morshi, India
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35
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Wu F, Ariyarathna JP, Alom NE, Kaur N, Li W. Oxyamination of Unactivated Alkenes with Electron-Rich Amines and Acids via a Catalytic Triiodide Intermediate. Org Lett 2020; 22:884-890. [PMID: 31927966 DOI: 10.1021/acs.orglett.9b04432] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
An aerobic catalytic oxidation process is described for the olefin oxyamination using acids and primary amines as the sources of O and N. Our mechanistic findings point to the formation of triiodide as a critical catalytic intermediate to account for the tolerance of electron-rich nucleophiles. This dual iodide and copper catalytic system is suitable for a formal [5+1] annulation process to access valuable lactam structures and highlighted by the synthesis of the pharmaceutical Zamifenacin.
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Affiliation(s)
- Fan Wu
- Department of Chemistry and Biochemistry, School of Green Chemistry and Engineering , The University of Toledo , 2801 West Bancroft Street , Toledo , Ohio 43606 , United States
| | - Jeewani P Ariyarathna
- Department of Chemistry and Biochemistry, School of Green Chemistry and Engineering , The University of Toledo , 2801 West Bancroft Street , Toledo , Ohio 43606 , United States
| | - Nur-E Alom
- Department of Chemistry and Biochemistry, School of Green Chemistry and Engineering , The University of Toledo , 2801 West Bancroft Street , Toledo , Ohio 43606 , United States
| | - Navdeep Kaur
- Department of Chemistry and Biochemistry, School of Green Chemistry and Engineering , The University of Toledo , 2801 West Bancroft Street , Toledo , Ohio 43606 , United States
| | - Wei Li
- Department of Chemistry and Biochemistry, School of Green Chemistry and Engineering , The University of Toledo , 2801 West Bancroft Street , Toledo , Ohio 43606 , United States
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36
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Rao WH, Jiang LL, Chen FY, Zhang M, Guo YY, Chen JJ, Cui Y, Zou GD, Tang L. Access to functionalized pyrrolidones via copper-catalyzed aminooxygenation of unactivated alkenes. Tetrahedron Lett 2020. [DOI: 10.1016/j.tetlet.2019.151540] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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37
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Li ZL, Fang GC, Gu QS, Liu XY. Recent advances in copper-catalysed radical-involved asymmetric 1,2-difunctionalization of alkenes. Chem Soc Rev 2020; 49:32-48. [DOI: 10.1039/c9cs00681h] [Citation(s) in RCA: 247] [Impact Index Per Article: 61.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
This tutorial review highlights the recent progress in copper-catalysed radical asymmetric 1,2-difunctionalization of alkenes.
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Affiliation(s)
- Zhong-Liang Li
- Shenzhen Grubbs Institute and Department of Chemistry
- Southern University of Science and Technology
- Shenzhen 518055
- China
- Academy for Advanced Interdisciplinary Studies
| | - Gui-Chun Fang
- Shenzhen Grubbs Institute and Department of Chemistry
- Southern University of Science and Technology
- Shenzhen 518055
- China
| | - Qiang-Shuai Gu
- Shenzhen Grubbs Institute and Department of Chemistry
- Southern University of Science and Technology
- Shenzhen 518055
- China
- Academy for Advanced Interdisciplinary Studies
| | - Xin-Yuan Liu
- Shenzhen Grubbs Institute and Department of Chemistry
- Southern University of Science and Technology
- Shenzhen 518055
- China
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38
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Tathe AG, Chintawar CC, Bhoyare VW, Patil NT. Ligand-enabled gold-catalyzed 1,2-heteroarylation of alkenes. Chem Commun (Camb) 2020; 56:9304-9307. [DOI: 10.1039/d0cc03707a] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
By adopting the interplay between ligand-enabled Au(i)/Au(iii) catalysis and the unique π-activation mode of gold complexes, a highly coveted 1,2-heteroarylation of alkenes has been accomplished.
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Affiliation(s)
- Akash G. Tathe
- Department of Chemistry, Indian Institute of Science Education and Research (IISER), Bhopal Bypass Road, Bhauri
- Bhopal – 462 066
- India
| | - Chetan C. Chintawar
- Department of Chemistry, Indian Institute of Science Education and Research (IISER), Bhopal Bypass Road, Bhauri
- Bhopal – 462 066
- India
| | - Vivek W. Bhoyare
- Department of Chemistry, Indian Institute of Science Education and Research (IISER), Bhopal Bypass Road, Bhauri
- Bhopal – 462 066
- India
| | - Nitin T. Patil
- Department of Chemistry, Indian Institute of Science Education and Research (IISER), Bhopal Bypass Road, Bhauri
- Bhopal – 462 066
- India
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39
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Liu Z, Wang P, Ou H, Yan Z, Chen S, Tan X, Yu D, Zhao X, Mu T. Preparation of cyclic imides from alkene-tethered amides: application of homogeneous Cu( ii) catalytic systems. RSC Adv 2020; 10:7698-7707. [PMID: 35492186 PMCID: PMC9049870 DOI: 10.1039/c9ra10422d] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2019] [Accepted: 02/05/2020] [Indexed: 01/03/2023] Open
Abstract
A Cu-based homogeneous catalytic system was proposed for the preparation of imides from alkene-tethered amides. Here, O2 acted as a terminal oxidant and a cheap and easily available oxygen source. The cleavage of C
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C bonds and the formation of C–N bonds were catalyzed by Cu(ii) salts with proper nitrogen-containing ligands under 100 °C. The synthesis approach has potential applications in pharmaceutical syntheses. Moreover, scaled-up experiments confirmed the practical applicability. A catalytic system comprising Cu(ii) and a nitrogen-based ligand for the oxygenation and cyclization of alkene-tethered amides.![]()
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Affiliation(s)
- Zhenghui Liu
- School of Pharmaceutical and Materials Engineering
- Taizhou University
- Taizhou 318000
- China
| | - Peng Wang
- Beijing National Laboratory for Molecular Sciences
- CAS Research/Education Center for Excellence in Molecular Sciences
- Institute of Chemistry
- Chinese Academy of Sciences
- Beijing 100190
| | - Hualin Ou
- Beijing National Laboratory for Molecular Sciences
- CAS Research/Education Center for Excellence in Molecular Sciences
- Institute of Chemistry
- Chinese Academy of Sciences
- Beijing 100190
| | - Zhenzhong Yan
- School of Pharmaceutical and Materials Engineering
- Taizhou University
- Taizhou 318000
- China
| | - Suqing Chen
- School of Pharmaceutical and Materials Engineering
- Taizhou University
- Taizhou 318000
- China
| | - Xingxing Tan
- Beijing National Laboratory for Molecular Sciences
- CAS Research/Education Center for Excellence in Molecular Sciences
- Institute of Chemistry
- Chinese Academy of Sciences
- Beijing 100190
| | - Dongkun Yu
- Department of Chemistry
- Renmin University of China
- Beijing 100872
- China
| | - Xinhui Zhao
- Department of Chemistry
- Renmin University of China
- Beijing 100872
- China
| | - Tiancheng Mu
- Department of Chemistry
- Renmin University of China
- Beijing 100872
- China
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40
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Chen S, Chen W, Chen X, Chen G, Ackermann L, Tian X. Copper(I)-Catalyzed Oxyamination of β,γ-Unsaturated Hydrazones: Synthesis of Dihydropyrazoles. Org Lett 2019; 21:7787-7790. [DOI: 10.1021/acs.orglett.9b02733] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Affiliation(s)
- Shanshan Chen
- Key Laboratory of Molecular Target & Clinical Pharmacology and the State Key Laboratory of Respiratory Disease, School of Pharmaceutical Sciences & the Fifth Affiliated Hospital, Guangzhou Medical University, Guangzhou, Guangdong 511436, China
| | - Wenming Chen
- Department of Pharmaceutical Production Center, The First Affiliated Hospital of Hunan University of Chinese Medicine, Changsha, Hunan 410007, China
| | - Xu Chen
- Key Laboratory of Molecular Target & Clinical Pharmacology and the State Key Laboratory of Respiratory Disease, School of Pharmaceutical Sciences & the Fifth Affiliated Hospital, Guangzhou Medical University, Guangzhou, Guangdong 511436, China
| | - Guifang Chen
- Key Laboratory of Molecular Target & Clinical Pharmacology and the State Key Laboratory of Respiratory Disease, School of Pharmaceutical Sciences & the Fifth Affiliated Hospital, Guangzhou Medical University, Guangzhou, Guangdong 511436, China
| | - Lutz Ackermann
- Institut für Organische und Biomolekulare Chemie, Georg-August-Universität, Tammannstraße 2, 37077 Göttingen, Germany
| | - Xu Tian
- Key Laboratory of Molecular Target & Clinical Pharmacology and the State Key Laboratory of Respiratory Disease, School of Pharmaceutical Sciences & the Fifth Affiliated Hospital, Guangzhou Medical University, Guangzhou, Guangdong 511436, China
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41
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Wu F, Alom N, Ariyarathna JP, Naß J, Li W. Regioselective Formal [3+2] Cycloadditions of Urea Substrates with Activated and Unactivated Olefins for Intermolecular Olefin Aminooxygenation. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201904662] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Fan Wu
- Department of Chemistry and Biochemistry and School of Green Chemistry and Engineering The University of Toledo Toledo OH 43606 USA
| | - Nur‐E Alom
- Department of Chemistry and Biochemistry and School of Green Chemistry and Engineering The University of Toledo Toledo OH 43606 USA
| | - Jeewani P. Ariyarathna
- Department of Chemistry and Biochemistry and School of Green Chemistry and Engineering The University of Toledo Toledo OH 43606 USA
| | - Johannes Naß
- Department of Chemistry and Biochemistry and School of Green Chemistry and Engineering The University of Toledo Toledo OH 43606 USA
| | - Wei Li
- Department of Chemistry and Biochemistry and School of Green Chemistry and Engineering The University of Toledo Toledo OH 43606 USA
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42
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Wu F, Alom N, Ariyarathna JP, Naß J, Li W. Regioselective Formal [3+2] Cycloadditions of Urea Substrates with Activated and Unactivated Olefins for Intermolecular Olefin Aminooxygenation. Angew Chem Int Ed Engl 2019; 58:11676-11680. [DOI: 10.1002/anie.201904662] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2019] [Revised: 05/21/2019] [Indexed: 11/08/2022]
Affiliation(s)
- Fan Wu
- Department of Chemistry and Biochemistry and School of Green Chemistry and Engineering The University of Toledo Toledo OH 43606 USA
| | - Nur‐E Alom
- Department of Chemistry and Biochemistry and School of Green Chemistry and Engineering The University of Toledo Toledo OH 43606 USA
| | - Jeewani P. Ariyarathna
- Department of Chemistry and Biochemistry and School of Green Chemistry and Engineering The University of Toledo Toledo OH 43606 USA
| | - Johannes Naß
- Department of Chemistry and Biochemistry and School of Green Chemistry and Engineering The University of Toledo Toledo OH 43606 USA
| | - Wei Li
- Department of Chemistry and Biochemistry and School of Green Chemistry and Engineering The University of Toledo Toledo OH 43606 USA
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43
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Lei H, Conway JH, Cook CC, Rovis T. Ligand Controlled Ir-Catalyzed Regiodivergent Oxyamination of Unactivated Alkenes. J Am Chem Soc 2019; 141:11864-11869. [PMID: 31310537 DOI: 10.1021/jacs.9b06366] [Citation(s) in RCA: 47] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
An intramolecular Ir(III)-catalyzed regiodivergent oxyamination of unactivated alkenes provides valuable γ-lactams, γ-lactones and δ-lactams. The regioselectivity is controlled by the electronically tunable cyclopentadienyl Ir(III)-complexes enabling oxyamination via either 5-exo or 6-endo pathways. With respect to the mechanism, we propose a highly reactive [3.1.0] bicycle intermediate derived from Ir(V) nitrene-mediated aziridination to be a key intermediate toward the synthesis of γ-lactams.
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Affiliation(s)
- Honghui Lei
- Department of Chemistry , Columbia University , New York , New York 10027 , United States
| | - John H Conway
- Department of Chemistry , Columbia University , New York , New York 10027 , United States
| | - Caleb C Cook
- Department of Chemistry , Columbia University , New York , New York 10027 , United States
| | - Tomislav Rovis
- Department of Chemistry , Columbia University , New York , New York 10027 , United States
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44
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Rao WH, Jiang LL, Liu XM, Chen MJ, Chen FY, Jiang X, Zhao JX, Zou GD, Zhou YQ, Tang L. Copper(II)-Catalyzed Alkene Aminosulfonylation with Sodium Sulfinates For the Synthesis of Sulfonylated Pyrrolidones. Org Lett 2019; 21:2890-2893. [PMID: 30958680 DOI: 10.1021/acs.orglett.9b00907] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
A copper-catalyzed direct aminosulfonylation of unactivated alkenes with sodium sulfinates for the efficient synthesis of sulfonylated pyrrolidones is described. This reaction features good functional group tolerance and wide substrate scope, providing an efficient and straightforward protocol to access this kind of pyrrolidones. Moreover, preliminary mechanistic investigations disclosed that a free-radical pathway might be invovled in the process.
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Affiliation(s)
- Wei-Hao Rao
- College of Chemistry and Chemical Engineering , Xinyang Normal University , Xinyang 464000 , China.,Henan Key Laboratory of Utilization of Non-Metallic Mineral in the South of Henan , Xinyang Normal University , Xinyang 464000 , China
| | - Li-Li Jiang
- College of Chemistry and Chemical Engineering , Xinyang Normal University , Xinyang 464000 , China
| | - Xiao-Meng Liu
- College of Chemistry and Chemical Engineering , Xinyang Normal University , Xinyang 464000 , China
| | - Mei-Jun Chen
- College of Chemistry and Chemical Engineering , Xinyang Normal University , Xinyang 464000 , China
| | - Fang-Yuan Chen
- College of Chemistry and Chemical Engineering , Xinyang Normal University , Xinyang 464000 , China
| | - Xin Jiang
- College of Chemistry and Chemical Engineering , Xinyang Normal University , Xinyang 464000 , China
| | - Jin-Xiao Zhao
- College of Chemistry and Chemical Engineering , Xinyang Normal University , Xinyang 464000 , China
| | - Guo-Dong Zou
- College of Chemistry and Chemical Engineering , Xinyang Normal University , Xinyang 464000 , China
| | - Yu-Qiang Zhou
- College of Chemistry and Chemical Engineering , Xinyang Normal University , Xinyang 464000 , China
| | - Lin Tang
- College of Chemistry and Chemical Engineering , Xinyang Normal University , Xinyang 464000 , China
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45
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Yang Y, Yuan F, Ren X, Wang G, Zhao W, Tang X, Guo M. Copper-Catalyzed Oxydifluoroalkylation of Hydroxyl-Containing Alkenes. J Org Chem 2019; 84:4507-4516. [DOI: 10.1021/acs.joc.9b00121] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Yanyan Yang
- Tianjin Key Laboratory of Molecular Optoelectronic Science, Department of Chemistry, School of Science, Tianjin University, Tianjin 300072, P. R. China
| | - Fangyuan Yuan
- Tianjin Key Laboratory of Molecular Optoelectronic Science, Department of Chemistry, School of Science, Tianjin University, Tianjin 300072, P. R. China
| | - Xiangwei Ren
- Tianjin Key Laboratory of Molecular Optoelectronic Science, Department of Chemistry, School of Science, Tianjin University, Tianjin 300072, P. R. China
| | - Guangwei Wang
- Tianjin Key Laboratory of Molecular Optoelectronic Science, Department of Chemistry, School of Science, Tianjin University, Tianjin 300072, P. R. China
| | - Wentao Zhao
- Tianjin Key Laboratory of Molecular Optoelectronic Science, Department of Chemistry, School of Science, Tianjin University, Tianjin 300072, P. R. China
| | - Xiangyang Tang
- Tianjin Key Laboratory of Molecular Optoelectronic Science, Department of Chemistry, School of Science, Tianjin University, Tianjin 300072, P. R. China
| | - Minjie Guo
- Institute for Molecular Design and Synthesis, School of Pharmaceutical Science and Technology, Tianjin University, Tianjin 300072, P. R. China
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46
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Albano G, Morelli M, Lissia M, Aronica LA. Synthesis of Functionalised Indoline and Isoquinoline Derivatives through a Silylcarbocyclisation/Desilylation Sequence. ChemistrySelect 2019. [DOI: 10.1002/slct.201900524] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Gianluigi Albano
- Dipartimento di Chimica e Chimica Industriale; University of Pisa, Via G. Moruzzi 13; 56124 Pisa Italy Fax: (+)390502219260
| | - Martina Morelli
- Dipartimento di Chimica e Chimica Industriale; University of Pisa, Via G. Moruzzi 13; 56124 Pisa Italy Fax: (+)390502219260
| | - Margherita Lissia
- Dipartimento di Chimica e Chimica Industriale; University of Pisa, Via G. Moruzzi 13; 56124 Pisa Italy Fax: (+)390502219260
| | - Laura A. Aronica
- Dipartimento di Chimica e Chimica Industriale; University of Pisa, Via G. Moruzzi 13; 56124 Pisa Italy Fax: (+)390502219260
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47
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Ma X, Hazelden IR, Langer T, Munday RH, Bower JF. Enantioselective Aza-Heck Cyclizations of N-(Tosyloxy)carbamates: Synthesis of Pyrrolidines and Piperidines. J Am Chem Soc 2019; 141:3356-3360. [DOI: 10.1021/jacs.8b12689] [Citation(s) in RCA: 46] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Xiaofeng Ma
- School of Chemistry, University of Bristol, Bristol, BS8 1TS, United Kingdom
| | - Ian R. Hazelden
- School of Chemistry, University of Bristol, Bristol, BS8 1TS, United Kingdom
| | - Thomas Langer
- Pharmaceutical Technology & Development, AstraZeneca, Charter Way, Macclesfield, SK10 2NA, United Kingdom
| | - Rachel H. Munday
- Pharmaceutical Technology & Development, AstraZeneca, Charter Way, Macclesfield, SK10 2NA, United Kingdom
| | - John F. Bower
- School of Chemistry, University of Bristol, Bristol, BS8 1TS, United Kingdom
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48
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Beejapur HA, Zhang Q, Hu K, Zhu L, Wang J, Ye Z. TEMPO in Chemical Transformations: From Homogeneous to Heterogeneous. ACS Catal 2019. [DOI: 10.1021/acscatal.8b05001] [Citation(s) in RCA: 88] [Impact Index Per Article: 17.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Hazi Ahmad Beejapur
- State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, Zhejiang Province Key Laboratory of Biofuel, Biodiesel Laboratory of China Petroleum and Chemical Industry Federation, College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310014, P. R. China
| | - Qi Zhang
- State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, Zhejiang Province Key Laboratory of Biofuel, Biodiesel Laboratory of China Petroleum and Chemical Industry Federation, College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310014, P. R. China
| | - Kecheng Hu
- State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, Zhejiang Province Key Laboratory of Biofuel, Biodiesel Laboratory of China Petroleum and Chemical Industry Federation, College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310014, P. R. China
| | - Li Zhu
- State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, Zhejiang Province Key Laboratory of Biofuel, Biodiesel Laboratory of China Petroleum and Chemical Industry Federation, College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310014, P. R. China
| | - Jianli Wang
- State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, Zhejiang Province Key Laboratory of Biofuel, Biodiesel Laboratory of China Petroleum and Chemical Industry Federation, College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310014, P. R. China
| | - Zhibin Ye
- Department of Chemical and Materials Engineering, Concordia University, Montreal, Quebec H3G 1M8, Canada
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49
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Hemric BN, Chen AW, Wang Q. Copper-Catalyzed Modular Amino Oxygenation of Alkenes: Access to Diverse 1,2-Amino Oxygen-Containing Skeletons. J Org Chem 2019; 84:1468-1488. [PMID: 30588808 DOI: 10.1021/acs.joc.8b02885] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Copper-catalyzed alkene amino oxygenation reactions using O-acylhydroxylamines have been achieved for a rapid and modular access to diverse 1,2-amino oxygen-containing molecules. This transformation is applicable to the use of alcohols, carbonyls, oximes, and thio-carboxylic acids as nucleophiles on both terminal and internal alkenes. Mild reaction conditions tolerate a wide range of functional groups, including ether, ester, amide, carbamate, and halide. The reaction protocol allows for starting with free amines as the precursor of O-benzoylhydroxylamines to eliminate their isolation and purification, contributing to broader synthetic utilities. Mechanistic investigations reveal the amino oxygenation reactions may involve distinct pathways, depending on different oxygen nucleophiles.
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Affiliation(s)
- Brett N Hemric
- Department of Chemistry , Duke University , Durham , North Carolina 27708 , United States
| | - Andy W Chen
- Department of Chemistry , Duke University , Durham , North Carolina 27708 , United States
| | - Qiu Wang
- Department of Chemistry , Duke University , Durham , North Carolina 27708 , United States
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50
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Shaikh AC, Varma ME, Mule RD, Banerjee S, Kulkarni PP, Patil NT. Ionic Pyridinium-Oxazole Dyads: Design, Synthesis, and Application in Mitochondrial Imaging. J Org Chem 2019; 84:1766-1777. [PMID: 30638382 DOI: 10.1021/acs.joc.8b02528] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
We recently developed an oxidative intramolecular 1,2-amino-oxygenation reaction, combining gold(I)/gold(III) catalysis, for accessing structurally unique ionic pyridinium-oxazole dyads (PODs) with tunable emission wavelengths. On further investigation, these fluorophores turned out to be potential biomarkers; in particular, the one containing -NMe2 functionality (NMe2-POD) was highly selective for mitochondrial imaging. Of note, because of mitochondria's involvement in early-stage apoptosis and degenerative conditions, tracking the dynamics of mitochondrial morphology with such imaging technology has attracted much interest. Along this line, we wanted to build a library of such PODs which are potential mitochondria trackers. However, Au/Selecfluor, our first-generation catalyst system, suffers from undesired fluorination of electronically rich PODs resulting in an inseparable mixture (1:1) of the PODs and their fluorinated derivatives. In our attempt to search for a better alternative to circumvent this issue, we developed a second-generation approach for the synthesis of PODs by employing Cu(II)/PhI(OAC)2-mediated oxidative 1,2-amino-oxygenation of alkynes. Thes newly synthesized PODs exhibit tunable emissions as well as excellent quantum efficiency up to 0.96. Further, this powerful process gives rapid access to a library of NMe2-PODs which are potential mitochondrial imaging agents. Out of the library, the randomly chosen POD-3g was studied for cell-imaging experiments which showed high mitochondrial specificity, superior photostability, and appreciable tolerance to microenvironment changes with respect to commercially available MitoTracker green.
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Affiliation(s)
- Aslam C Shaikh
- Division of Organic Chemistry CSIR-National Chemical Laboratory , Dr. Homi Bhabha Road , Pune 411 008 , India.,Academy of Scientific and Innovative Research (AcSIR) , Ghaziabad 201 002 , India
| | - Mokshada E Varma
- Savitribai Phule Pune University , Ganeshkhind Road , Pune 411 007 , India.,Bioprospecting Group , Agharkar Research Institute , G. G. Agarkar Road , Pune 411 004 , India
| | - Ravindra D Mule
- Division of Organic Chemistry CSIR-National Chemical Laboratory , Dr. Homi Bhabha Road , Pune 411 008 , India.,Academy of Scientific and Innovative Research (AcSIR) , Ghaziabad 201 002 , India
| | - Somsuvra Banerjee
- Division of Organic Chemistry CSIR-National Chemical Laboratory , Dr. Homi Bhabha Road , Pune 411 008 , India.,Academy of Scientific and Innovative Research (AcSIR) , Ghaziabad 201 002 , India
| | - Prasad P Kulkarni
- Savitribai Phule Pune University , Ganeshkhind Road , Pune 411 007 , India.,Bioprospecting Group , Agharkar Research Institute , G. G. Agarkar Road , Pune 411 004 , India
| | - Nitin T Patil
- Department of Chemistry , Indian Institute of Science Education and Research (IISER)-Bhopal , Bhopal 462 066 , India
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