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Cai BG, Bao YP, Pei C, Li Q, Li L, Koenigs RM, Xuan J. Photochemical synthesis of 1,2,4-triazoles via addition reaction of triplet intermediates to diazoalkanes and azomethine ylide intermediates. Chem Sci 2022; 13:13141-13146. [PMID: 36425480 PMCID: PMC9667952 DOI: 10.1039/d2sc04720a] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2022] [Accepted: 10/22/2022] [Indexed: 09/19/2023] Open
Abstract
The reactivity of diazoalkanes most commonly proceeds through the formation of carbene intermediates or dipolar cycloaddition reactions. The reaction of diazoalkanes with intermediates with unpaired electrons, however, is much less elaborated. Herein, we report on the photochemical reaction of acceptor-only diazoalkanes with azodicarboxylates. Photoexcitation of the latter results in the formation of a triplet species, which undergoes an addition reaction with diazoalkanes and formation of an azomethine ylide followed by dipolar cycloaddition reaction with organic nitriles to give a 1,2,4-triazole. The application of this transformation was elaborated in a broad and general substrate scope (48 examples), including scale-up via flow chemistry and downstream transformations. Experimental and computational studies were performed to elucidate the reaction mechanism and to rationalize the reaction outcome.
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Affiliation(s)
- Bao-Gui Cai
- Anhui Province Key Laboratory of Chemistry for Inorganic/Organic Hybrid Functionalized Materials, College of Chemistry & Chemical Engineering, Anhui University Hefei Anhui 230601 China
| | - Ye-Peng Bao
- Anhui Province Key Laboratory of Chemistry for Inorganic/Organic Hybrid Functionalized Materials, College of Chemistry & Chemical Engineering, Anhui University Hefei Anhui 230601 China
| | - Chao Pei
- Institute of Organic Chemistry, RWTH Aachen University Landoltweg 1 52074 Aachen Germany
| | - Qian Li
- Anhui Province Key Laboratory of Chemistry for Inorganic/Organic Hybrid Functionalized Materials, College of Chemistry & Chemical Engineering, Anhui University Hefei Anhui 230601 China
| | - Lei Li
- Anhui Province Key Laboratory of Chemistry for Inorganic/Organic Hybrid Functionalized Materials, College of Chemistry & Chemical Engineering, Anhui University Hefei Anhui 230601 China
| | - Rene M Koenigs
- Institute of Organic Chemistry, RWTH Aachen University Landoltweg 1 52074 Aachen Germany
| | - Jun Xuan
- Anhui Province Key Laboratory of Chemistry for Inorganic/Organic Hybrid Functionalized Materials, College of Chemistry & Chemical Engineering, Anhui University Hefei Anhui 230601 China
- Key Laboratory of Structure and Functional Regulation of Hybrid Materials, (Anhui University), Ministry of Education Hefei Anhui 230601 China
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2
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Joe CL, Inankur B, Chadwick J, Lou S, Nye J, Strotman NA, DelMonte AJ. Development of a Scalable Negishi Cross-Coupling Process for the Preparation of 2-Chloro-5-(1-(tetrahydro-2 H-pyran-2-yl)-1 H-pyrazol-5-yl)aniline. Org Process Res Dev 2021. [DOI: 10.1021/acs.oprd.0c00414] [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)
- Candice L. Joe
- Chemical Process Development, Bristol Myers Squibb, One Squibb Drive, New Brunswick, New Jersey 08903, United States
| | - Bahar Inankur
- Chemical Process Development, Bristol Myers Squibb, One Squibb Drive, New Brunswick, New Jersey 08903, United States
| | - James Chadwick
- Chemical Process Development, Bristol Myers Squibb, Reeds Lane, Moreton, Wirral CH46 1QW, United Kingdom
| | - Sha Lou
- Chemical Process Development, Bristol Myers Squibb, One Squibb Drive, New Brunswick, New Jersey 08903, United States
| | - Jeffrey Nye
- Chemical Process Development, Bristol Myers Squibb, One Squibb Drive, New Brunswick, New Jersey 08903, United States
| | - Neil A. Strotman
- Chemical Process Development, Bristol Myers Squibb, One Squibb Drive, New Brunswick, New Jersey 08903, United States
| | - Albert J. DelMonte
- Chemical Process Development, Bristol Myers Squibb, One Squibb Drive, New Brunswick, New Jersey 08903, United States
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3
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Koenig SG, Green KL, Müller B, Sowell CG, Askin D, Gosselin F. Development of a practical synthesis to PI3K α-selective inhibitor GDC-0326. Tetrahedron 2021. [DOI: 10.1016/j.tet.2020.131840] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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4
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Pitchai M, Ulaganathan S, Venkateshappa SS, Akunuri A, Rampulla R, Mathur A, Gupta A. Concise synthesis of chiral pyrazolo[4,3‐
f
] [1,4]oxazepines and pyrazolo[4,3‐
f
] [1,4]thiazepines bearing pyrazole unit. J Heterocycl Chem 2020. [DOI: 10.1002/jhet.4195] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Manivel Pitchai
- Biocon Bristol‐Myers Squibb Research Center Syngene International Ltd Bangalore India
| | - Sankar Ulaganathan
- Biocon Bristol‐Myers Squibb Research Center Syngene International Ltd Bangalore India
| | | | - Arun Akunuri
- Biocon Bristol‐Myers Squibb Research Center Syngene International Ltd Bangalore India
| | - Richard Rampulla
- Small Molecule Drug Discovery Bristol Myers Squibb Research and Early Development Princeton New Jersey USA
| | - Arvind Mathur
- Small Molecule Drug Discovery Bristol Myers Squibb Research and Early Development Princeton New Jersey USA
| | - Anuradha Gupta
- Biocon Bristol‐Myers Squibb Research Center Syngene International Ltd Bangalore India
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5
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Yang Q, Babij NR, Good S. Potential Safety Hazards Associated with Pd-Catalyzed Cross-Coupling Reactions. Org Process Res Dev 2019. [DOI: 10.1021/acs.oprd.9b00377] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Qiang Yang
- Crop Protection Product Design & Process R&D, Corteva Agriscience, 9330 Zionsville Road, Indianapolis, Indiana 46268, United States
| | - Nicholas R. Babij
- Crop Protection Product Design & Process R&D, Corteva Agriscience, 9330 Zionsville Road, Indianapolis, Indiana 46268, United States
| | - Steffen Good
- Crop Protection Product Design & Process R&D, Corteva Agriscience, 9330 Zionsville Road, Indianapolis, Indiana 46268, United States
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6
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St-Jean F, Remarchuk T, Angelaud R, Carrera DE, Beaudry D, Malhotra S, McClory A, Kumar A, Ohlenbusch G, Schuster AM, Gosselin F. Manufacture of the PI3K β-Sparing Inhibitor Taselisib. Part 2: Development of a Highly Efficient and Regioselective Late-Stage Process. Org Process Res Dev 2019. [DOI: 10.1021/acs.oprd.9b00050] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Frédéric St-Jean
- Department of Small Molecule Process Chemistry, Genentech Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Travis Remarchuk
- Department of Small Molecule Process Chemistry, Genentech Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Rémy Angelaud
- Department of Small Molecule Process Chemistry, Genentech Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Diane E. Carrera
- Department of Small Molecule Process Chemistry, Genentech Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Danial Beaudry
- Department of Small Molecule Process Chemistry, Genentech Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Sushant Malhotra
- Department of Small Molecule Process Chemistry, Genentech Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Andrew McClory
- Department of Small Molecule Process Chemistry, Genentech Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Archana Kumar
- Department of Small Molecule Process Chemistry, Genentech Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Gerd Ohlenbusch
- Small Molecules Technical Development PTDC-C, F. Hoffmann-La Roche Ltd., Grenzacherstrasse 124, 4070 Basel, Switzerland
| | - Andreas M. Schuster
- Small Molecules Technical Development PTDC-C, F. Hoffmann-La Roche Ltd., Grenzacherstrasse 124, 4070 Basel, Switzerland
| | - Francis Gosselin
- Department of Small Molecule Process Chemistry, Genentech Inc., 1 DNA Way, South San Francisco, California 94080, United States
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7
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Xu Y, Zhang L, Liu M, Zhang X, Zhang X, Fan X. Synthesis of benzoazepine derivatives via Rh(iii)-catalyzed inert C(sp2)–H functionalization and [4 + 3] annulation. Org Biomol Chem 2019; 17:8706-8710. [DOI: 10.1039/c9ob01830a] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
A novel synthesis of benzoazepine derivatives via Rh(iii)-catalyzed inert C(sp2)–H bond functionalization and [4 + 3] annulation is presented.
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Affiliation(s)
- Yuanshuang Xu
- Henan Key Laboratory of Organic Functional Molecules and Drug Innovation
- Key Laboratory of Green Chemical Media and Reactions
- Ministry of Education
- Collaborative Innovation Centre of Henan Province for Green Manufacturing of Fine Chemicals
- School of Chemistry and Chemical Engineering
| | - Linghua Zhang
- Henan Key Laboratory of Organic Functional Molecules and Drug Innovation
- Key Laboratory of Green Chemical Media and Reactions
- Ministry of Education
- Collaborative Innovation Centre of Henan Province for Green Manufacturing of Fine Chemicals
- School of Chemistry and Chemical Engineering
| | - Mengyang Liu
- Henan Key Laboratory of Organic Functional Molecules and Drug Innovation
- Key Laboratory of Green Chemical Media and Reactions
- Ministry of Education
- Collaborative Innovation Centre of Henan Province for Green Manufacturing of Fine Chemicals
- School of Chemistry and Chemical Engineering
| | - Xiaopeng Zhang
- Henan Key Laboratory of Organic Functional Molecules and Drug Innovation
- Key Laboratory of Green Chemical Media and Reactions
- Ministry of Education
- Collaborative Innovation Centre of Henan Province for Green Manufacturing of Fine Chemicals
- School of Chemistry and Chemical Engineering
| | - Xinying Zhang
- Henan Key Laboratory of Organic Functional Molecules and Drug Innovation
- Key Laboratory of Green Chemical Media and Reactions
- Ministry of Education
- Collaborative Innovation Centre of Henan Province for Green Manufacturing of Fine Chemicals
- School of Chemistry and Chemical Engineering
| | - Xuesen Fan
- Henan Key Laboratory of Organic Functional Molecules and Drug Innovation
- Key Laboratory of Green Chemical Media and Reactions
- Ministry of Education
- Collaborative Innovation Centre of Henan Province for Green Manufacturing of Fine Chemicals
- School of Chemistry and Chemical Engineering
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