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Wang X, Wu S, Yang R, Song H, Liu Y, Wang Q. Recent advances in combining photo- and N-heterocyclic carbene catalysis. Chem Sci 2023; 14:13367-13383. [PMID: 38033906 PMCID: PMC10685334 DOI: 10.1039/d3sc03274d] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2023] [Accepted: 10/27/2023] [Indexed: 12/02/2023] Open
Abstract
N-Heterocyclic carbenes (NHCs) are unique Lewis basic catalysts that mediate various organic transformations by means of polarity reversal. Although the scope of research on two-electron reactions mediated by NHC catalysts has been expanding, the types of these reactions are limited by the inability of NHCs to engage sp3-electrophiles. However, the revival of photocatalysis has accelerated the development of free-radical chemistry, and combining photoredox catalysis and NHC catalysis to achieve NHC-mediated radical reactions under mild conditions could overcome the above-mentioned limitation. This review summarizes recent advances in combining photoredox and NHC catalysis, focusing on elucidation and exploration of mechanisms, with the aim of identifying challenges and opportunities to develop more types of catalytic models.
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Affiliation(s)
- Xiaochen Wang
- State Key Laboratory of Elemento-Organic Chemistry, Research Institute of Elemento-Organic Chemistry, Frontiers Science Center for New Organic Matter, College of Chemistry, Nankai University Tianjin 300071 People's Republic of China
| | - Senhui Wu
- State Key Laboratory of Elemento-Organic Chemistry, Research Institute of Elemento-Organic Chemistry, Frontiers Science Center for New Organic Matter, College of Chemistry, Nankai University Tianjin 300071 People's Republic of China
| | - Rongxin Yang
- State Key Laboratory of Elemento-Organic Chemistry, Research Institute of Elemento-Organic Chemistry, Frontiers Science Center for New Organic Matter, College of Chemistry, Nankai University Tianjin 300071 People's Republic of China
| | - Hongjian Song
- State Key Laboratory of Elemento-Organic Chemistry, Research Institute of Elemento-Organic Chemistry, Frontiers Science Center for New Organic Matter, College of Chemistry, Nankai University Tianjin 300071 People's Republic of China
| | - Yuxiu Liu
- State Key Laboratory of Elemento-Organic Chemistry, Research Institute of Elemento-Organic Chemistry, Frontiers Science Center for New Organic Matter, College of Chemistry, Nankai University Tianjin 300071 People's Republic of China
| | - Qingmin Wang
- State Key Laboratory of Elemento-Organic Chemistry, Research Institute of Elemento-Organic Chemistry, Frontiers Science Center for New Organic Matter, College of Chemistry, Nankai University Tianjin 300071 People's Republic of China
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2
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Zhen G, Jiang K, Yin B. Progress in Organocatalytic Dearomatization Reactions Catalyzed by Heterocyclic Carbenes. ChemCatChem 2022. [DOI: 10.1002/cctc.202200099] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Guangjin Zhen
- South China University of Technology School of Chemistry and Chemical Engineering CHINA
| | - Kai Jiang
- South China University of Technology School of Chemistry and Chemical Engineering CHINA
| | - Biaolin Yin
- South China University of Technology Dept. of Chenistry and chemical engineering Wushan Street 510640 Guangzhou CHINA
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3
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Song X, Chen Y, Lu F, Zhang K, Yu C, Li T, Yao C. NHC-catalyzed [4 + 2] annulations of allenoates and 2,3-dioxopyrrolidine derivatives. Org Biomol Chem 2022; 20:1219-1225. [PMID: 35040844 DOI: 10.1039/d1ob02180j] [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 facile NHC-catalyzed [2 + 4] annulation of allenoates with 2,3-dioxypyrrolidine derivatives was discovered, which paved a new avenue for the construction of highly substituted pyranopyrrole with moderate to good yields, high atom economy and mild reaction conditions.
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Affiliation(s)
- Xue Song
- School of Chemistry and Materials Science, Jiangsu Key Lab of Green Synthetic Chemistry for Functional Materials. Jiangsu Normal University, Xuzhou, Jiangsu 221116, P. R. China.
| | - Yangxu Chen
- School of Chemistry and Materials Science, Jiangsu Key Lab of Green Synthetic Chemistry for Functional Materials. Jiangsu Normal University, Xuzhou, Jiangsu 221116, P. R. China.
| | - Fangfang Lu
- School of Chemistry and Materials Science, Jiangsu Key Lab of Green Synthetic Chemistry for Functional Materials. Jiangsu Normal University, Xuzhou, Jiangsu 221116, P. R. China.
| | - Kai Zhang
- School of Chemistry and Materials Science, Jiangsu Key Lab of Green Synthetic Chemistry for Functional Materials. Jiangsu Normal University, Xuzhou, Jiangsu 221116, P. R. China.
| | - Chenxia Yu
- School of Chemistry and Materials Science, Jiangsu Key Lab of Green Synthetic Chemistry for Functional Materials. Jiangsu Normal University, Xuzhou, Jiangsu 221116, P. R. China.
| | - Tuanjie Li
- School of Chemistry and Materials Science, Jiangsu Key Lab of Green Synthetic Chemistry for Functional Materials. Jiangsu Normal University, Xuzhou, Jiangsu 221116, P. R. China.
| | - Changsheng Yao
- School of Chemistry and Materials Science, Jiangsu Key Lab of Green Synthetic Chemistry for Functional Materials. Jiangsu Normal University, Xuzhou, Jiangsu 221116, P. R. China.
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4
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Bose A, Pathak T. Vinyl sulfone-modified carbohydrates: Michael acceptors and 2π partners for the synthesis of functionalized sugars and enantiomerically pure carbocycles and heterocycles. Adv Carbohydr Chem Biochem 2021; 78:1-134. [PMID: 33276909 DOI: 10.1016/bs.accb.2020.10.001] [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] [Indexed: 12/29/2022]
Abstract
Increasing demands for molecules with skeletal complexity, including those of stereochemical diversity, require new synthetic strategies. Carbohydrates have been used extensively as chiral building blocks for the synthesis of various complex molecules. On the other hand, the vinyl sulfone group has been identified as a unique functional group, which acts either as a Michael acceptor or a 2π partner in cycloaddition reactions. A combination of the high reactivity of the vinyl sulfone group and the in-built chiralities of carbohydrates has the potential to function as a powerful tool to generate a wide variety of enantiomerically pure reactive intermediates. Since CS bond formation in carbohydrates is easily achieved with regioselectivity, further synthetic manipulations of these thiosugars has led to the generation of a wide range of vinyl sulfone-modified furanosyl, pyranosyl, acyclic, and bicyclic carbohydrates. Several approaches have been studied to standardize the preparative methods for accessing vinyl sulfone-modified carbohydrates at least on a gram scale. Reactions of these modified carbohydrates with appropriate reagents afford a large number of new chemical entities primarily via (i) Michael addition reactions, (ii) desulfostannylation, (iii) Michael-initiated ring-closure reactions, and (iv) cycloaddition reactions. A wide range of desulfonylating reagents in the context of sensitive molecules such as carbohydrates have also been extensively studied. Applications of these strategies have led to the synthesis of (a) amino sugars and branched-chain sugars, (b) C-glycosides, (c) enantiomerically pure cyclopropanes, five- and six-membered carbocycles, (d) saturated oxa-, aza-, and thio-monocyclic heterocycles, (e) bi-and tricyclic saturated oxa and aza heterocycles, (f) enantiomerically pure and trisubstituted pyrroles, (g) 1,5-disubstituted 1,2,3-triazolylated carbohydrates and the corresponding triazole-linked di- and trisaccharides, (h) divinyl sulfone-modified carbohydrates and densely functionalized S,S-dioxothiomorpholines, and (i) modified nucleosides. Details of reaction conditions were incorporated as much as possible and mechanistic discussions were included wherever necessary.
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Affiliation(s)
- Amitabha Bose
- Department of Chemistry, Indian Institute of Technology Kharagpur, Kharagpur, West Bengal, India
| | - Tanmaya Pathak
- Department of Chemistry, Indian Institute of Technology Kharagpur, Kharagpur, West Bengal, India.
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5
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6
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Liu L, Guo D, Wang J. NHC-Catalyzed Asymmetric α-Regioselective [4 + 2] Annulation to Construct α-Alkylidene-δ-lactones. Org Lett 2020; 22:7025-7029. [DOI: 10.1021/acs.orglett.0c02573] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Lala Liu
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen 529020, P.R. China
| | - Donghui Guo
- School of Pharmaceutical Sciences, Key Laboratory of Bioorganic Phosphorous Chemistry & Chemical Biology (Ministry of Education), Tsinghua University, Beijing 100084, China
| | - Jian Wang
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen 529020, P.R. China
- School of Pharmaceutical Sciences, Key Laboratory of Bioorganic Phosphorous Chemistry & Chemical Biology (Ministry of Education), Tsinghua University, Beijing 100084, China
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7
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Liu J, Xing XN, Huang JH, Lu LQ, Xiao WJ. Light opens a new window for N-heterocyclic carbene catalysis. Chem Sci 2020; 11:10605-10613. [PMID: 34094315 PMCID: PMC8162372 DOI: 10.1039/d0sc03595e] [Citation(s) in RCA: 81] [Impact Index Per Article: 20.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2020] [Accepted: 08/08/2020] [Indexed: 01/01/2023] Open
Abstract
N-Heterocyclic carbenes (NHCs) are efficient Lewis basic catalysts for the umpolung of various polarized unsaturated compounds usually including aldehydes, imines, acyl chlorides and activated esters. NHC catalysis involving electron pair transfer steps has been extensively studied; however, NHC catalysis through single-electron transfer (SET) processes, despite having the potential to achieve chemical transformations of inert chemical bonds and using green reagents, has long been a challenging task in organic synthesis. In parallel, visible-light-induced photocatalysis and photoexcitation have been established as powerful tools to facilitate sustainable organic synthesis, as they enable the generation of various reactive radical intermediates under extremely mild conditions. Recently, a number of elegant visible-light-induced, NHC-catalyzed transformations were developed for accessing valuable organic compounds. As a result, this minireview will highlight the recent advances in this field.
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Affiliation(s)
- Jing Liu
- Key Laboratory of Pesticide & Chemical Biology, Ministry of Education, College of Chemistry, Central China Normal University 152 Luoyu Road Wuhan Hubei 430079 China http://chem-xiao.ccnu.edu.cn
| | - Xiao-Ning Xing
- Anyang Academy of Agricultural Sciences 833 Wenming Road Anyang Henan China
| | - Jin-Hai Huang
- Key Laboratory of Pesticide & Chemical Biology, Ministry of Education, College of Chemistry, Central China Normal University 152 Luoyu Road Wuhan Hubei 430079 China http://chem-xiao.ccnu.edu.cn
| | - Liang-Qiu Lu
- Key Laboratory of Pesticide & Chemical Biology, Ministry of Education, College of Chemistry, Central China Normal University 152 Luoyu Road Wuhan Hubei 430079 China http://chem-xiao.ccnu.edu.cn
| | - Wen-Jing Xiao
- Key Laboratory of Pesticide & Chemical Biology, Ministry of Education, College of Chemistry, Central China Normal University 152 Luoyu Road Wuhan Hubei 430079 China http://chem-xiao.ccnu.edu.cn
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8
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Hussein MA, Tran UPN, Huynh VT, Ho J, Bhadbhade M, Mayr H, Nguyen TV. Halide Anion Triggered Reactions of Michael Acceptors with Tropylium Ion. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.201910578] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
| | | | | | - Junming Ho
- School of Chemistry UNSW Sydney Australia
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9
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Xie Y, Li L, Sun S, Wu Z, Lang M, Jiang D, Wang J. Enantioselective NHC-Catalyzed [3+3] Annulation of α-Bromoenals with 2-Aminobenzimidazoles. Org Lett 2020; 22:391-394. [PMID: 31913042 DOI: 10.1021/acs.orglett.9b04054] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
A chiral carbene-catalyzed [3+3] annulation of α-bromoenals with 2-aminobenzimidazoles providing pyrimido[1,2-a]benzimidazoles has been described. This protocol features a broad scope and good functional group tolerance. Biological studies indicated that the formed pyrimido[1,2-a]benzimidazole exhibited moderate cytotoxic activity against tumor cells.
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Affiliation(s)
- Yangxi Xie
- School of Pharmaceutical Sciences , Tsinghua University , Beijing 100084 , China
| | - Luoyuan Li
- School of Pharmaceutical Sciences , Tsinghua University , Beijing 100084 , China
| | - Shaofa Sun
- College of Chemistry and Biological Sciences , Hubei University of Science and Technology , Hubei 437100 , China
| | - Zijun Wu
- School of Pharmaceutical Sciences , Tsinghua University , Beijing 100084 , China
| | - Ming Lang
- School of Pharmaceutical Sciences , Tsinghua University , Beijing 100084 , China
| | - Di Jiang
- School of Pharmaceutical Sciences , Tsinghua University , Beijing 100084 , China
| | - Jian Wang
- College of Chemistry and Biological Sciences , Hubei University of Science and Technology , Hubei 437100 , China.,School of Pharmaceutical Sciences , Tsinghua University , Beijing 100084 , China
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10
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Hussein MA, Tran UPN, Huynh VT, Ho J, Bhadbhade M, Mayr H, Nguyen TV. Halide Anion Triggered Reactions of Michael Acceptors with Tropylium Ion. Angew Chem Int Ed Engl 2019; 59:1455-1459. [DOI: 10.1002/anie.201910578] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2019] [Revised: 09/27/2019] [Indexed: 12/27/2022]
Affiliation(s)
| | | | | | - Junming Ho
- School of Chemistry UNSW Sydney Australia
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11
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Yasui K, Kamitani M, Tobisu M. N‐Heterocyclic Carbene Catalyzed Concerted Nucleophilic Aromatic Substitution of Aryl Fluorides Bearing α,β‐Unsaturated Amides. Angew Chem Int Ed Engl 2019; 58:14157-14161. [DOI: 10.1002/anie.201907837] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2019] [Revised: 07/23/2019] [Indexed: 02/05/2023]
Affiliation(s)
- Kosuke Yasui
- Department of Applied Chemistry Graduate School of Engineering Osaka University Suita Osaka 565-0871 Japan
| | - Miharu Kamitani
- Department of Applied Chemistry Graduate School of Engineering Osaka University Suita Osaka 565-0871 Japan
| | - Mamoru Tobisu
- Department of Applied Chemistry Graduate School of Engineering Osaka University Suita Osaka 565-0871 Japan
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12
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Yasui K, Kamitani M, Tobisu M. N‐Heterocyclic Carbene Catalyzed Concerted Nucleophilic Aromatic Substitution of Aryl Fluorides Bearing α,β‐Unsaturated Amides. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201907837] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Kosuke Yasui
- Department of Applied Chemistry Graduate School of Engineering Osaka University Suita Osaka 565-0871 Japan
| | - Miharu Kamitani
- Department of Applied Chemistry Graduate School of Engineering Osaka University Suita Osaka 565-0871 Japan
| | - Mamoru Tobisu
- Department of Applied Chemistry Graduate School of Engineering Osaka University Suita Osaka 565-0871 Japan
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13
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Bae S, Zhang C, Gillard RM, Lupton DW. Enantioselective N‐Heterocyclic Carbene Catalyzed Bis(enoate) Rauhut–Currier Reaction. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201907111] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Song Bae
- School of Chemistry Monash University Clayton 3800 Victoria Australia
| | - Changhe Zhang
- School of Chemistry Monash University Clayton 3800 Victoria Australia
| | - Rachel M. Gillard
- School of Chemistry Monash University Clayton 3800 Victoria Australia
| | - David W. Lupton
- School of Chemistry Monash University Clayton 3800 Victoria Australia
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14
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Bae S, Zhang C, Gillard RM, Lupton DW. Enantioselective N‐Heterocyclic Carbene Catalyzed Bis(enoate) Rauhut–Currier Reaction. Angew Chem Int Ed Engl 2019; 58:13370-13374. [DOI: 10.1002/anie.201907111] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2019] [Revised: 07/15/2019] [Indexed: 12/22/2022]
Affiliation(s)
- Song Bae
- School of Chemistry Monash University Clayton 3800 Victoria Australia
| | - Changhe Zhang
- School of Chemistry Monash University Clayton 3800 Victoria Australia
| | - Rachel M. Gillard
- School of Chemistry Monash University Clayton 3800 Victoria Australia
| | - David W. Lupton
- School of Chemistry Monash University Clayton 3800 Victoria Australia
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15
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Nguyen XB, Nakano Y, Duggan NM, Scott L, Breugst M, Lupton DW. N‐Heterocyclic Carbene Catalyzed (5+1) Annulations Exploiting a Vinyl Dianion Synthon Strategy. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201905475] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Xuan B. Nguyen
- School of Chemistry Monash University Clayton 3800 Victoria Australia
| | - Yuji Nakano
- School of Chemistry Monash University Clayton 3800 Victoria Australia
| | | | - Lydia Scott
- School of Chemistry Monash University Clayton 3800 Victoria Australia
| | - Martin Breugst
- Department für Chemie Universität zu Köln Greinstraße 4 50939 Köln Germany
| | - David W. Lupton
- School of Chemistry Monash University Clayton 3800 Victoria Australia
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16
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Nguyen XB, Nakano Y, Duggan NM, Scott L, Breugst M, Lupton DW. N‐Heterocyclic Carbene Catalyzed (5+1) Annulations Exploiting a Vinyl Dianion Synthon Strategy. Angew Chem Int Ed Engl 2019; 58:11483-11490. [DOI: 10.1002/anie.201905475] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2019] [Indexed: 12/22/2022]
Affiliation(s)
- Xuan B. Nguyen
- School of Chemistry Monash University Clayton 3800 Victoria Australia
| | - Yuji Nakano
- School of Chemistry Monash University Clayton 3800 Victoria Australia
| | | | - Lydia Scott
- School of Chemistry Monash University Clayton 3800 Victoria Australia
| | - Martin Breugst
- Department für Chemie Universität zu Köln Greinstraße 4 50939 Köln Germany
| | - David W. Lupton
- School of Chemistry Monash University Clayton 3800 Victoria Australia
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17
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Wang S, Rodríguez-Escrich C, Fianchini M, Maseras F, Pericàs MA. Diastereodivergent Enantioselective [8 + 2] Annulation of Tropones and Enals Catalyzed by N-Heterocyclic Carbenes. Org Lett 2019; 21:3187-3192. [DOI: 10.1021/acs.orglett.9b00906] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Shoulei Wang
- Institute of Chemical Research of Catalonia (ICIQ), The Barcelona Institute of Science and Technology, Av Països Catalans 16, 43007 Tarragona, Spain
| | - Carles Rodríguez-Escrich
- Institute of Chemical Research of Catalonia (ICIQ), The Barcelona Institute of Science and Technology, Av Països Catalans 16, 43007 Tarragona, Spain
| | - Mauro Fianchini
- Institute of Chemical Research of Catalonia (ICIQ), The Barcelona Institute of Science and Technology, Av Països Catalans 16, 43007 Tarragona, Spain
| | - Feliu Maseras
- Institute of Chemical Research of Catalonia (ICIQ), The Barcelona Institute of Science and Technology, Av Països Catalans 16, 43007 Tarragona, Spain
- Departament de Química, Universitat Autonoma de Barcelona, 08193 Bellaterra, Spain
| | - Miquel A. Pericàs
- Institute of Chemical Research of Catalonia (ICIQ), The Barcelona Institute of Science and Technology, Av Països Catalans 16, 43007 Tarragona, Spain
- Departament de Química Inorgànica i Orgànica, Universitat de Barcelona, 08080 Barcelona, Spain
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18
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Fernando JEM, Nakano Y, Zhang C, Lupton DW. Enantioselective N‐Heterocyclic Carbene Catalysis that Exploits Imine Umpolung. Angew Chem Int Ed Engl 2019; 58:4007-4011. [DOI: 10.1002/anie.201812585] [Citation(s) in RCA: 44] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2018] [Indexed: 11/09/2022]
Affiliation(s)
| | - Yuji Nakano
- School of Chemistry Monash University Clayton 3800 Victoria Australia
| | - Changhe Zhang
- School of Chemistry Monash University Clayton 3800 Victoria Australia
| | - David W. Lupton
- School of Chemistry Monash University Clayton 3800 Victoria Australia
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19
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Fernando JEM, Nakano Y, Zhang C, Lupton DW. Enantioselective N‐Heterocyclic Carbene Catalysis that Exploits Imine Umpolung. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201812585] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
| | - Yuji Nakano
- School of ChemistryMonash University Clayton 3800 Victoria Australia
| | - Changhe Zhang
- School of ChemistryMonash University Clayton 3800 Victoria Australia
| | - David W. Lupton
- School of ChemistryMonash University Clayton 3800 Victoria Australia
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20
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Xia F, Chen XY, Ye S. [3 + 4] Annulation of Bromoenals and 1,2-Benzenedithiol: Base-Promoted [2 + 4] Reaction and N-Heterocyclic Carbene-Catalyzed Ring-Expansion. J Org Chem 2018; 83:15178-15185. [PMID: 30468071 DOI: 10.1021/acs.joc.8b02460] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
The [3 + 4] and [2 + 4] annulations of bromoenals and 1,2-benzenedithiol were developed in the presence or absence of N-heterocyclic carbene, respectively. Control experiment and kinetic investigation revealed the [3 + 4] annulation involves the base-promoted [2 + 4] annulation and the following carbene-catalyzed ring-expansion.
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Affiliation(s)
- Fei Xia
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Molecular Recognition and Function, CAS Research/Education Center for Excellence in Molecular Sciences , Institute of Chemistry, Chinese Academy of Sciences , Beijing 100190 , China.,University of Chinese Academy of Sciences , Beijing 100049 , China
| | - Xiang-Yu Chen
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Molecular Recognition and Function, CAS Research/Education Center for Excellence in Molecular Sciences , Institute of Chemistry, Chinese Academy of Sciences , Beijing 100190 , China
| | - Song Ye
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Molecular Recognition and Function, CAS Research/Education Center for Excellence in Molecular Sciences , Institute of Chemistry, Chinese Academy of Sciences , Beijing 100190 , China.,University of Chinese Academy of Sciences , Beijing 100049 , China
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21
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Peng Q, Zhang B, Xie Y, Wang J. Carbene-Catalyzed [4 + 2] Annulation of 2 H-Azirine-2-carboxaldehydes with Ketones via Azolium Aza-Dienolate Intermediate. Org Lett 2018; 20:7641-7644. [PMID: 30479131 DOI: 10.1021/acs.orglett.8b03378] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
A new carbene-catalyzed [4 + 2] annulation of 2 H-azirine-2-carbaldehydes with ketones was developed, thus providing the 2,3-dihydro-6 H-1,3-oxazin-6-one core structures with broad scope and good to excellent yields. Notably, the azolium aza-dienolates generated from the addition of NHCs to 2 H-azirines are first uncovered.
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Affiliation(s)
- Qiupeng Peng
- School of Pharmaceutical Sciences, Key Laboratory of Bioorganic Phosphorous Chemistry & Chemical Biology (Ministry of Education) , Tsinghua University , Beijing 100084 , China
| | - Bei Zhang
- School of Pharmaceutical Sciences, Key Laboratory of Bioorganic Phosphorous Chemistry & Chemical Biology (Ministry of Education) , Tsinghua University , Beijing 100084 , China
| | - Yangxi Xie
- School of Pharmaceutical Sciences, Key Laboratory of Bioorganic Phosphorous Chemistry & Chemical Biology (Ministry of Education) , Tsinghua University , Beijing 100084 , China
| | - Jian Wang
- School of Pharmaceutical Sciences, Key Laboratory of Bioorganic Phosphorous Chemistry & Chemical Biology (Ministry of Education) , Tsinghua University , Beijing 100084 , China
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22
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Kim Y, Lee E. Stable Organic Radicals Derived from N‐Heterocyclic Carbenes. Chemistry 2018; 24:19110-19121. [PMID: 30058298 DOI: 10.1002/chem.201801560] [Citation(s) in RCA: 54] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2018] [Revised: 06/23/2018] [Indexed: 11/11/2022]
Affiliation(s)
- Youngsuk Kim
- Center for Self-assembly and ComplexityInstitute for Basic Science (IBS) Pohang 37673 Republic of Korea
- Department of ChemistryPohang University of Science and Technology Pohang 37673 Republic of Korea
| | - Eunsung Lee
- Center for Self-assembly and ComplexityInstitute for Basic Science (IBS) Pohang 37673 Republic of Korea
- Department of ChemistryPohang University of Science and Technology Pohang 37673 Republic of Korea
- Division of Advanced Materials SciencePohang University of Science and Technology Pohang 37673 Republic of Korea
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23
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Scott L, Nakano Y, Zhang C, Lupton DW. Enantioselective N‐Heterocyclic Carbene Catalyzed Cyclopentene Synthesis via the β‐Azolium Ylide. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201804271] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Lydia Scott
- School of Chemistry Monash University Clayton 3800 Victoria Australia
| | - Yuji Nakano
- School of Chemistry Monash University Clayton 3800 Victoria Australia
| | - Changhe Zhang
- School of Chemistry Monash University Clayton 3800 Victoria Australia
| | - David W. Lupton
- School of Chemistry Monash University Clayton 3800 Victoria Australia
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24
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Scott L, Nakano Y, Zhang C, Lupton DW. Enantioselective N‐Heterocyclic Carbene Catalyzed Cyclopentene Synthesis via the β‐Azolium Ylide. Angew Chem Int Ed Engl 2018; 57:10299-10303. [DOI: 10.1002/anie.201804271] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2018] [Revised: 05/30/2018] [Indexed: 01/04/2023]
Affiliation(s)
- Lydia Scott
- School of Chemistry Monash University Clayton 3800 Victoria Australia
| | - Yuji Nakano
- School of Chemistry Monash University Clayton 3800 Victoria Australia
| | - Changhe Zhang
- School of Chemistry Monash University Clayton 3800 Victoria Australia
| | - David W. Lupton
- School of Chemistry Monash University Clayton 3800 Victoria Australia
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25
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Lang M, Jia Q, Wang J. N-Heterocyclic Carbene-Catalyzed Annulation of Ylides with Ynals: Direct Access to α-Pyrones. Chem Asian J 2018; 13:2427-2430. [DOI: 10.1002/asia.201800595] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2018] [Revised: 05/15/2018] [Indexed: 11/08/2022]
Affiliation(s)
- Ming Lang
- School of Pharmaceutical Sciences, Key Laboratory of Bioorganic Phosphorous Chemistry & Chemical Biology (Ministry of Education); Tsinghua University; Beijing 100084 P. R. China
| | - Qianfa Jia
- School of Pharmaceutical Sciences, Key Laboratory of Bioorganic Phosphorous Chemistry & Chemical Biology (Ministry of Education); Tsinghua University; Beijing 100084 P. R. China
| | - Jian Wang
- School of Pharmaceutical Sciences, Key Laboratory of Bioorganic Phosphorous Chemistry & Chemical Biology (Ministry of Education); Tsinghua University; Beijing 100084 P. R. China
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26
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Li X, Tang M, Wang Y, Wang Y, Li Z, Qu LB, Wei D. Insights into the N-Heterocyclic Carbene (NHC)-Catalyzed Intramolecular Cyclization of Aldimines: General Mechanism and Role of Catalyst. Chem Asian J 2018; 13:1710-1718. [PMID: 29667337 DOI: 10.1002/asia.201800313] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2018] [Revised: 04/02/2018] [Indexed: 12/14/2022]
Abstract
One of the most challenging questions in the Lewis base organocatalyst field is how to predict the most electrophilic carbon for the complexation of N-heterocyclic carbene (NHC) and reactant. This study provides a valuable case for this issue. Multiple mechanisms (A, B, C, D, and E) for the intramolecular cyclization of aldimine catalyzed by NHC were investigated by using density functional theory (DFT). The computed results reveal that the NHC energetically prefers attacking the iminyl carbon (AIC mode, which is associated with mechanisms A and C) rather than attacking the olefin carbon (AOC mode, which is associated with mechanisms B and D) or attacking the carbonyl carbon (ACC mode, which is associated with mechanism E) of aldimine. The calculated results based on the different reaction models indicate that mechanism A (AIC mode), which is associated with the formation of the aza-Breslow intermediate, is the most favorable pathway. For mechanism A, there are five steps: (1) nucleophilic addition of NHC to the iminyl carbon of aldimine; (2) [1,2]-proton transfer to form an aza-Breslow intermediate; (3) intramolecular cyclization; (4) the other [1,2]-proton transfer; and (5) regeneration of NHC. The analyses of reactivity indexes have been applied to explain the chemoselectivity, and the general principles regarding the possible mechanisms would be useful for the rational design of NHC-catalyzed chemoselective reactions.
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Affiliation(s)
- Xue Li
- The College of Chemistry and Molecular Engineering, Zhengzhou University, No. 100 Kexue Street, Zhengzhou, Henan, 450001, P. R. China
| | - Mingsheng Tang
- The College of Chemistry and Molecular Engineering, Zhengzhou University, No. 100 Kexue Street, Zhengzhou, Henan, 450001, P. R. China
| | - Yanyan Wang
- The College of Chemistry and Molecular Engineering, Zhengzhou University, No. 100 Kexue Street, Zhengzhou, Henan, 450001, P. R. China
| | - Yang Wang
- Department of Material and Chemical Engineering, Zhengzhou University of Light Industry, No. 100 Kexue Street, Zhengzhou, Henan, 450002, P. R. China
| | - Zhongjun Li
- The College of Chemistry and Molecular Engineering, Zhengzhou University, No. 100 Kexue Street, Zhengzhou, Henan, 450001, P. R. China
| | - Ling-Bo Qu
- The College of Chemistry and Molecular Engineering, Zhengzhou University, No. 100 Kexue Street, Zhengzhou, Henan, 450001, P. R. China
| | - Donghui Wei
- The College of Chemistry and Molecular Engineering, Zhengzhou University, No. 100 Kexue Street, Zhengzhou, Henan, 450001, P. R. China
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27
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Ahire MM, Mhaske SB. Isa‒NHC‒catalyzed intermolecular Stetter reaction of aromatic aldehydes with maleimides: An efficient access to 3‒aroylsuccinimides. Tetrahedron 2018. [DOI: 10.1016/j.tet.2018.03.009] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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28
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Chen XY, Liu Q, Chauhan P, Enders D. N-Heterocyclic Carbene Catalysis via Azolium Dienolates: An Efficient Strategy for Remote Enantioselective Functionalizations. Angew Chem Int Ed Engl 2018; 57:3862-3873. [DOI: 10.1002/anie.201709684] [Citation(s) in RCA: 186] [Impact Index Per Article: 31.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2017] [Indexed: 12/11/2022]
Affiliation(s)
- Xiang-Yu Chen
- Institute of Organic Chemistry; RWTH Aachen University; Landoltweg 1 52074 Aachen Germany
| | - Qiang Liu
- Institute of Organic Chemistry; RWTH Aachen University; Landoltweg 1 52074 Aachen Germany
| | - Pankaj Chauhan
- Institute of Organic Chemistry; RWTH Aachen University; Landoltweg 1 52074 Aachen Germany
| | - Dieter Enders
- Institute of Organic Chemistry; RWTH Aachen University; Landoltweg 1 52074 Aachen Germany
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29
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Chen XY, Liu Q, Chauhan P, Enders D. Katalyse durch N-heterocyclische Carbene über Azoliumdienolate: eine effiziente Strategie für enantioselektive Funktionalisierungen an entfernten Positionen. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201709684] [Citation(s) in RCA: 63] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Xiang-Yu Chen
- Institut für Organische Chemie; RWTH Aachen; Landoltweg 1 52074 Aachen Deutschland
| | - Qiang Liu
- Institut für Organische Chemie; RWTH Aachen; Landoltweg 1 52074 Aachen Deutschland
| | - Pankaj Chauhan
- Institut für Organische Chemie; RWTH Aachen; Landoltweg 1 52074 Aachen Deutschland
| | - Dieter Enders
- Institut für Organische Chemie; RWTH Aachen; Landoltweg 1 52074 Aachen Deutschland
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30
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Hu Y, Li S, Wang Z, Yao Y, Li T, Yu C, Yao C. NHC-Catalyzed Hetero-Diels-Alder Reaction of Allenoate with Chalcone: Synthesis of Polysubstituted Pyranyl Carboxylate. J Org Chem 2018; 83:3361-3366. [PMID: 29430931 DOI: 10.1021/acs.joc.7b03173] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
An NHC-catalyzed hetero-Diels-Alder and isomerization process of chalcones with allenoates was discovered, which furnished highly functionalized multisubstituted pyranyl carboxylates successfully. This method features a convergent assembly, mild reaction conditions, moderate to good yields, and high atom economy.
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Affiliation(s)
- Yong Hu
- Jiangsu Key Lab of Green Synthetic Chemistry for Functional Materials, School of Chemistry & Materials Science , Jiangsu Normal University , Xuzhou , Jiangsu 221116 , P. R. China
| | - Sha Li
- Jiangsu Key Lab of Green Synthetic Chemistry for Functional Materials, School of Chemistry & Materials Science , Jiangsu Normal University , Xuzhou , Jiangsu 221116 , P. R. China
| | - Zhanlin Wang
- Jiangsu Key Lab of Green Synthetic Chemistry for Functional Materials, School of Chemistry & Materials Science , Jiangsu Normal University , Xuzhou , Jiangsu 221116 , P. R. China
| | - Yibiao Yao
- Jiangsu Key Lab of Green Synthetic Chemistry for Functional Materials, School of Chemistry & Materials Science , Jiangsu Normal University , Xuzhou , Jiangsu 221116 , P. R. China
| | - Tuanjie Li
- Jiangsu Key Lab of Green Synthetic Chemistry for Functional Materials, School of Chemistry & Materials Science , Jiangsu Normal University , Xuzhou , Jiangsu 221116 , P. R. China
| | - Chenxia Yu
- Jiangsu Key Lab of Green Synthetic Chemistry for Functional Materials, School of Chemistry & Materials Science , Jiangsu Normal University , Xuzhou , Jiangsu 221116 , P. R. China
| | - Changsheng Yao
- Jiangsu Key Lab of Green Synthetic Chemistry for Functional Materials, School of Chemistry & Materials Science , Jiangsu Normal University , Xuzhou , Jiangsu 221116 , P. R. China
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31
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Fang C, Cao J, Sun K, Zhu J, Lu T, Du D. Direct and Enantioselective Synthesis of N-H-Free 1,5-Benzodiazepin-2-ones by an N-Heterocyclic Carbene Catalyzed [3+4] Annulation Reaction. Chemistry 2018; 24:2103-2108. [PMID: 29236349 DOI: 10.1002/chem.201705050] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2017] [Indexed: 01/14/2023]
Abstract
An NHC-catalyzed formal [3+4] annulation of α,β-unsaturated acylazoliums with protecting-group-free aryl 1,2-diamines was developed for a direct and highly enantioselective synthesis of 4-aryl N-H-free 1,5-benzodiazepin-2-ones. This methodology offers an efficient and rapid access to a wide range of enantioenriched target compounds from easily accessible starting materials. The protocol is also scalable and the desired products can easily undergo subsequent N-functionalization to afford diverse N-substituted derivatives. Additionally, a mechanism was proposed to explain the high enantioselectivity in this process.
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Affiliation(s)
- Chao Fang
- State Key Laboratory of Natural Medicines, Department of Organic Chemistry, China Pharmaceutical University, Nanjing, 210009, P. R. China
| | - Jing Cao
- State Key Laboratory of Natural Medicines, Department of Organic Chemistry, China Pharmaceutical University, Nanjing, 210009, P. R. China
| | - Kewen Sun
- State Key Laboratory of Natural Medicines, Department of Organic Chemistry, China Pharmaceutical University, Nanjing, 210009, P. R. China
| | - Jindong Zhu
- State Key Laboratory of Natural Medicines, Department of Organic Chemistry, China Pharmaceutical University, Nanjing, 210009, P. R. China
| | - Tao Lu
- State Key Laboratory of Natural Medicines, Department of Organic Chemistry, China Pharmaceutical University, Nanjing, 210009, P. R. China
| | - Ding Du
- State Key Laboratory of Natural Medicines, Department of Organic Chemistry, China Pharmaceutical University, Nanjing, 210009, P. R. China
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32
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Krishnan J, Jose A, Sasidhar BS, Suresh E, Menon RS, Nair V. An uncommon multicomponent reaction involving nucleophilic heterocyclic carbenes: facile synthesis of fully substituted cyclopentanones. Org Chem Front 2018. [DOI: 10.1039/c7qo01051f] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An unprecedented three component reaction involving arylidene oxazolone, enal and NHC, leading to the synthesis of fully substituted cyclopentanone derivatives with three contiguous stereocenters, is reported.
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Affiliation(s)
- Jagadeesh Krishnan
- Chemical Sciences and Technology Division
- National Institute for Interdisciplinary Science and Technology (CSIR-NIIST)
- Thiruvananthapuram – 695 019
- India
- Academy of Scientific and Innovative Research (AcSIR)
| | - Anu Jose
- Chemical Sciences and Technology Division
- National Institute for Interdisciplinary Science and Technology (CSIR-NIIST)
- Thiruvananthapuram – 695 019
- India
| | - B. S. Sasidhar
- Chemical Sciences and Technology Division
- National Institute for Interdisciplinary Science and Technology (CSIR-NIIST)
- Thiruvananthapuram – 695 019
- India
- Academy of Scientific and Innovative Research (AcSIR)
| | - E. Suresh
- Analytical Department and Centralized Instrument Facility
- CSIR-CSMCRI
- Bhavnagar – 364 002
- India
| | - Rajeev S. Menon
- Department of Chemistry
- Central University of Haryana
- Mahendergarh
- India
| | - Vijay Nair
- Chemical Sciences and Technology Division
- National Institute for Interdisciplinary Science and Technology (CSIR-NIIST)
- Thiruvananthapuram – 695 019
- India
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33
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Singh G, Goswami P, Vijaya Anand R. Exploring bis-(amino)cyclopropenylidene as a non-covalent Brønsted base catalyst in conjugate addition reactions. Org Biomol Chem 2018; 16:384-388. [DOI: 10.1039/c7ob02882b] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
The catalytic application of bis-(amino)cyclopropenylidene, as a non-covalent Brønsted base, in the 1,4- and 1,6-conjugate addition of carbon nucleophiles to enones andp-quinone methides, respectively, is described.
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Affiliation(s)
- Gurdeep Singh
- Department of Chemical Sciences
- Indian Institute of Science Education and Research (IISER) Mohali
- India
| | - Prithwish Goswami
- Department of Chemical Sciences
- Indian Institute of Science Education and Research (IISER) Mohali
- India
| | - Ramasamy Vijaya Anand
- Department of Chemical Sciences
- Indian Institute of Science Education and Research (IISER) Mohali
- India
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34
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Cao J, Sun K, Dong S, Lu T, Dong Y, Du D. Esters as Alkynyl Acyl Ammonium and Azolium Precursors: A Formal [2 + 3] Annulation with Amidomalonates via Lewis Base/Lewis Acid Cooperative Catalysis. Org Lett 2017; 19:6724-6727. [DOI: 10.1021/acs.orglett.7b03453] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Jing Cao
- State Key Laboratory of Natural
Medicines, Department of Organic Chemistry, China Pharmaceutical University, Nanjing 210009, P. R. China
| | - Kewen Sun
- State Key Laboratory of Natural
Medicines, Department of Organic Chemistry, China Pharmaceutical University, Nanjing 210009, P. R. China
| | - Shuding Dong
- State Key Laboratory of Natural
Medicines, Department of Organic Chemistry, China Pharmaceutical University, Nanjing 210009, P. R. China
| | - Tao Lu
- State Key Laboratory of Natural
Medicines, Department of Organic Chemistry, China Pharmaceutical University, Nanjing 210009, P. R. China
| | - Ying Dong
- State Key Laboratory of Natural
Medicines, Department of Organic Chemistry, China Pharmaceutical University, Nanjing 210009, P. R. China
| | - Ding Du
- State Key Laboratory of Natural
Medicines, Department of Organic Chemistry, China Pharmaceutical University, Nanjing 210009, P. R. China
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35
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Ahire M, Mhaske SB. Synthesis of Succinimide Derivatives by NHC-Catalyzed Stetter Reaction of Aromatic Aldehydes with N-Substituted Itaconimides. ACS OMEGA 2017; 2:6598-6604. [PMID: 31457257 PMCID: PMC6644805 DOI: 10.1021/acsomega.7b01213] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/22/2017] [Accepted: 09/28/2017] [Indexed: 06/10/2023]
Abstract
An N-heterocyclic carbene-catalyzed intermolecular Stetter reaction of aromatic aldehydes with N-substituted itaconimides has been developed. A delicate balance between the Stetter reaction and the competing isomerization of the itaconimide double bond has been achieved in this operationally simple reaction to afford valuable new succinimide derivatives containing 1,4 and 1,5 dicarbonyl scaffolds in good to excellent yields. The reaction tolerates variable substituents on both aldehydes and N-substituted itaconimides.
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Affiliation(s)
- Milind
M. Ahire
- Division
of Organic Chemistry, CSIR-National Chemical
Laboratory, Pune 411008, India
- Academy
of Scientific and Innovative Research (AcSIR), CSIR-National Chemical Laboratory Campus, Pune 411008, India
| | - Santosh B. Mhaske
- Division
of Organic Chemistry, CSIR-National Chemical
Laboratory, Pune 411008, India
- Academy
of Scientific and Innovative Research (AcSIR), CSIR-National Chemical Laboratory Campus, Pune 411008, India
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36
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Wang T, Gao ZH, Ye S. [4+2] and [3+2] Annulations of α-Chloroaldehydes and Dithio- esters: Synthesis of 1,4-Oxathiin-2(3H
)-ones and 1,3-Oxathioles. Adv Synth Catal 2017. [DOI: 10.1002/adsc.201700601] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Tong Wang
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Molecular Recognition and Function, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry; Chinese Academy of Sciences; Beijing 100190 People's Republic of China
- Center for Drug Evaluation; China Food and Drug Administration; Beijing 100038 People's Republic of China
| | - Zhong-Hua Gao
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Molecular Recognition and Function, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry; Chinese Academy of Sciences; Beijing 100190 People's Republic of China
| | - Song Ye
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Molecular Recognition and Function, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry; Chinese Academy of Sciences; Beijing 100190 People's Republic of China
- University of Chinese Academy of Sciences; Beijing 100049 People's Republic of China
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37
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Matsuoka SI, Fukumoto Y, Suzuki M. Tail-to-tail Cross-dimerization of Methyl Methacrylate/Methacrylonitrile with Acrylates Catalyzed by N-Heterocyclic Carbene. CHEM LETT 2017. [DOI: 10.1246/cl.170263] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Shin-ichi Matsuoka
- Department of Life Science and Applied Chemistry, Graduate School of Engineering, Nagoya Institute of Technology, Gokiso-cho, Showa-ku, Nagoya, Aichi 466-8555
| | - Yuki Fukumoto
- Department of Life Science and Applied Chemistry, Graduate School of Engineering, Nagoya Institute of Technology, Gokiso-cho, Showa-ku, Nagoya, Aichi 466-8555
| | - Masato Suzuki
- Department of Life Science and Applied Chemistry, Graduate School of Engineering, Nagoya Institute of Technology, Gokiso-cho, Showa-ku, Nagoya, Aichi 466-8555
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38
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Fang C, Lu T, Zhu J, Sun K, Du D. Formal [3 + 4] Annulation of α,β-Unsaturated Acyl Azoliums: Access to Enantioenriched N-H-Free 1,5-Benzothiazepines. Org Lett 2017; 19:3470-3473. [PMID: 28598636 DOI: 10.1021/acs.orglett.7b01457] [Citation(s) in RCA: 52] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
An unprecedented formal [3 + 4] annulation of α,β-unsaturated acyl azoliums with 2-aminobenzenethiols has been utilized to synthesize enantioenriched N-H-free 1,5-benzothiazepines, which are recognized as privileged structures in numerous biologically active scaffolds. This protocol offers a rapid and direct pathway to access the target compounds with high enantioselectivities and has been applied in the concise synthesis of chiral drug (R)-thiazesim.
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Affiliation(s)
- Chao Fang
- State Key Laboratory of Natural Medicines, Department of Organic Chemistry, China Pharmaceutical University , Nanjing, 210009, P. R. China
| | - Tao Lu
- State Key Laboratory of Natural Medicines, Department of Organic Chemistry, China Pharmaceutical University , Nanjing, 210009, P. R. China
| | - Jindong Zhu
- State Key Laboratory of Natural Medicines, Department of Organic Chemistry, China Pharmaceutical University , Nanjing, 210009, P. R. China
| | - Kewen Sun
- State Key Laboratory of Natural Medicines, Department of Organic Chemistry, China Pharmaceutical University , Nanjing, 210009, P. R. China
| | - Ding Du
- State Key Laboratory of Natural Medicines, Department of Organic Chemistry, China Pharmaceutical University , Nanjing, 210009, P. R. China
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39
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Kaiser D, de la Torre A, Shaaban S, Maulide N. Metal-Free Formal Oxidative C-C Coupling by In Situ Generation of an Enolonium Species. Angew Chem Int Ed Engl 2017; 56:5921-5925. [PMID: 28429392 DOI: 10.1002/anie.201701538] [Citation(s) in RCA: 92] [Impact Index Per Article: 13.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2017] [Revised: 03/11/2017] [Indexed: 01/27/2023]
Abstract
Much contemporary organic synthesis relies on transformations that are driven by the intrinsic, so-called "natural", polarity of chemical bonds and reactive centers. The design of unconventionally polarized synthons is a highly desirable strategy, as it generally enables unprecedented retrosynthetic disconnections for the synthesis of complex substances. Whereas the umpolung of carbonyl centers is a well-known strategy, polarity reversal at the α-position of a carbonyl group is much rarer. Herein, we report the design of a novel electrophilic enolonium species and its application in efficient and chemoselective, metal-free oxidative C-C coupling.
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Affiliation(s)
- Daniel Kaiser
- Institute of Organic Chemistry, University of Vienna, Währinger Strasse 38, 1090, Wien, Austria
| | - Aurélien de la Torre
- Institute of Organic Chemistry, University of Vienna, Währinger Strasse 38, 1090, Wien, Austria
| | - Saad Shaaban
- Institute of Organic Chemistry, University of Vienna, Währinger Strasse 38, 1090, Wien, Austria
| | - Nuno Maulide
- Institute of Organic Chemistry, University of Vienna, Währinger Strasse 38, 1090, Wien, Austria
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40
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Kaiser D, de la Torre A, Shaaban S, Maulide N. Metallfreie formale oxidative C-C-Kupplung durch In-situ-Erzeugung einer elektrophilen Enoloniumspezies. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201701538] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Daniel Kaiser
- Institut für Organische Chemie; Universität Wien; Währinger Straße 38 1090 Wien Österreich
| | - Aurélien de la Torre
- Institut für Organische Chemie; Universität Wien; Währinger Straße 38 1090 Wien Österreich
| | - Saad Shaaban
- Institut für Organische Chemie; Universität Wien; Währinger Straße 38 1090 Wien Österreich
| | - Nuno Maulide
- Institut für Organische Chemie; Universität Wien; Währinger Straße 38 1090 Wien Österreich
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41
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Prieto L, Sánchez-Díez E, Uria U, Reyes E, Carrillo L, Vicario JL. Catalytic Generation of Donor-Acceptor Cyclopropanes under N
-Heterocyclic Carbene Activation and their Stereoselective Reaction with Alkylideneoxindoles. Adv Synth Catal 2017. [DOI: 10.1002/adsc.201700198] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- Liher Prieto
- Department of Organic Chemistry II; University of the Basque Country (UPV/EHU).; P. O. Box 644 48080 Bilbao Spain
| | - Eduardo Sánchez-Díez
- Department of Organic Chemistry II; University of the Basque Country (UPV/EHU).; P. O. Box 644 48080 Bilbao Spain
| | - Uxue Uria
- Department of Organic Chemistry II; University of the Basque Country (UPV/EHU).; P. O. Box 644 48080 Bilbao Spain
| | - Efraím Reyes
- Department of Organic Chemistry II; University of the Basque Country (UPV/EHU).; P. O. Box 644 48080 Bilbao Spain
| | - Luisa Carrillo
- Department of Organic Chemistry II; University of the Basque Country (UPV/EHU).; P. O. Box 644 48080 Bilbao Spain
| | - Jose L. Vicario
- Department of Organic Chemistry II; University of the Basque Country (UPV/EHU).; P. O. Box 644 48080 Bilbao Spain
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42
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Matsuoka SI, Kamijo Y, Suzuki M. Post-polymerization modification of unsaturated polyesters by Michael addition of N-heterocyclic carbenes. Polym J 2017. [DOI: 10.1038/pj.2017.2] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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43
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Xu J, Cao J, Fang C, Lu T, Du D. Organocatalytic C–C bond activation of cyclopropenones for ring-opening formal [3 + 2] cycloaddition with isatins. Org Chem Front 2017. [DOI: 10.1039/c6qo00734a] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Cyclopropenones were first applied as potential 3C synthons in ring-opening formal cycloaddition with isatins via an organocatalytic C–C bond activation strategy.
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Affiliation(s)
- Junyu Xu
- State Key Laboratory of Natural Medicines
- Department of Organic Chemistry
- China Pharmaceutical University
- Nanjing
- P. R. China
| | - Jing Cao
- State Key Laboratory of Natural Medicines
- Department of Organic Chemistry
- China Pharmaceutical University
- Nanjing
- P. R. China
| | - Chao Fang
- State Key Laboratory of Natural Medicines
- Department of Organic Chemistry
- China Pharmaceutical University
- Nanjing
- P. R. China
| | - Tao Lu
- State Key Laboratory of Natural Medicines
- Department of Organic Chemistry
- China Pharmaceutical University
- Nanjing
- P. R. China
| | - Ding Du
- State Key Laboratory of Natural Medicines
- Department of Organic Chemistry
- China Pharmaceutical University
- Nanjing
- P. R. China
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44
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Liu Q, Chen XY, Li S, Jafari E, Raabe G, Enders D. N-Heterocyclic carbene-catalyzed [4+2] annulation of β-methyl enals and cyclic trifluoromethyl ketimines for the asymmetric synthesis of dihydroquinazolinone derivatives. Chem Commun (Camb) 2017; 53:11342-11344. [DOI: 10.1039/c7cc06562k] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The enantioselective oxidative N-heterocyclic carbene-catalyzed [4+2] annulation reaction of β-methyl enals and cyclic trifluoromethyl ketimines has been developed.
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Affiliation(s)
- Qiang Liu
- Institute of Organic Chemistry
- RWTH Aachen University
- 52074 Aachen
- Germany
| | - Xiang-Yu Chen
- Institute of Organic Chemistry
- RWTH Aachen University
- 52074 Aachen
- Germany
| | - Sun Li
- Institute of Organic Chemistry
- RWTH Aachen University
- 52074 Aachen
- Germany
| | - Ehsan Jafari
- Institute of Organic Chemistry
- RWTH Aachen University
- 52074 Aachen
- Germany
| | - Gerhard Raabe
- Institute of Organic Chemistry
- RWTH Aachen University
- 52074 Aachen
- Germany
| | - Dieter Enders
- Institute of Organic Chemistry
- RWTH Aachen University
- 52074 Aachen
- Germany
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45
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Matsuoka SI, Awano N, Nakazawa M, Suzuki M. Tail-to-tail dimerization and Rauhut-Currier reaction of disubstituted Michael acceptors catalyzed by N-heterocyclic carbene. Tetrahedron Lett 2016. [DOI: 10.1016/j.tetlet.2016.11.031] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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46
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Krishnan J, Mathew S, Jayaprakash PA, Sasidhar BS, Mayadevi TS, Suresh E, Nair V. Sequential N-Heterocyclic Carbene-Catalyzed Reactions of Enals and Cyclic Aryldiene-1,3-Diones: Synthesis of Tricyclic Chromenones and Related Compounds. ASIAN J ORG CHEM 2016. [DOI: 10.1002/ajoc.201600419] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Jagadeesh Krishnan
- Chemical Science and Technology Division; National Institute for Interdisciplinary Science and Technology (CSIR-NIIST); Trivandrum- 695 019 India
- Academy of Scientific and Innovative Research; New Delhi- 110001 India
| | - Sneha Mathew
- Chemical Science and Technology Division; National Institute for Interdisciplinary Science and Technology (CSIR-NIIST); Trivandrum- 695 019 India
| | - P. Anjana Jayaprakash
- Chemical Science and Technology Division; National Institute for Interdisciplinary Science and Technology (CSIR-NIIST); Trivandrum- 695 019 India
| | - B. S. Sasidhar
- Chemical Science and Technology Division; National Institute for Interdisciplinary Science and Technology (CSIR-NIIST); Trivandrum- 695 019 India
- Academy of Scientific and Innovative Research; New Delhi- 110001 India
| | - T. S. Mayadevi
- Chemical Science and Technology Division; National Institute for Interdisciplinary Science and Technology (CSIR-NIIST); Trivandrum- 695 019 India
| | - E. Suresh
- Analytical Department and Centralized Instrument Facility; CSIR-CSMCRI; Bhavnagar 364 002 India
| | - Vijay Nair
- Chemical Science and Technology Division; National Institute for Interdisciplinary Science and Technology (CSIR-NIIST); Trivandrum- 695 019 India
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47
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Wang L, Zhu G, Tang W, Lu T, Du D. DMAP-promoted in situ activation of bromoacetic acid as a 2-carbon synthon for facile synthesis of pyridines and fused pyridin-2-ones. Tetrahedron 2016. [DOI: 10.1016/j.tet.2016.08.062] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
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48
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Wang X, Agarwal J, Schaefer Iii HF. Characterizing a nonclassical carbene with coupled cluster methods: cyclobutylidene. Phys Chem Chem Phys 2016; 18:24560-8. [PMID: 27539444 DOI: 10.1039/c6cp03513b] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Carbenes represent a special class of reactive compounds that possess a lone pair of electrons on a carbon atom. Among the myriad examples of carbenes in the literature, cyclobutylidene stands out as a unique nonclassical compound that includes transannular interaction between opposing C1 and C3 carbon atoms within a four-membered ring. On its lowest potential energy surface (X[combining tilde](1)A'), cyclobutylidene quickly rearranges, following three reaction paths: (i) 1,2-H migration; (ii) 1,2-C migration; and, (iii) 1,3-H migration. Herein, this reactivity is examined with high-level coupled-cluster methods [up to CCSDT(Q)]. At this level of theory, combined with extrapolation techniques to obtain energies at the complete basis set (CBS) limit, the long-standing disparity between theoretical and experimental results is resolved. Specifically, cyclobutylidene is predicted to prefer 1,2-C migration rather than 1,2-H migration. Rate constants for the three reaction paths are obtained from canonical variational transition state theory (CVT) and yield reasonable agreement with existing experimental results. Further characterization of cyclobutylidene is also reported: the singlet-triplet gap (ΔES-T) is found to be -9.3 kcal mol(-1) at the CCSDT(Q)/CBS level of theory, and anharmonic vibrational frequencies are determined with second-order vibrational perturbation theory (VPT2).
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Affiliation(s)
- Xiao Wang
- Center for Computational Quantum Chemistry, University of Georgia, Athens, GA 30602, USA.
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49
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Dong S, Fang C, Tang W, Lu T, Du D. Alkynyl Acylammoniums as Electrophilic 3C Synthons in a Formal [3 + 3] Annulation: Access to Functionalized 4H-Pyran-4-ones. Org Lett 2016; 18:3882-5. [DOI: 10.1021/acs.orglett.6b01891] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Affiliation(s)
- Shuding Dong
- State Key Laboratory of Natural
Medicines, Department of Organic Chemistry, China Pharmaceutical University, Nanjing 210009, P. R. China
| | - Chao Fang
- State Key Laboratory of Natural
Medicines, Department of Organic Chemistry, China Pharmaceutical University, Nanjing 210009, P. R. China
| | - Weifang Tang
- State Key Laboratory of Natural
Medicines, Department of Organic Chemistry, China Pharmaceutical University, Nanjing 210009, P. R. China
| | - Tao Lu
- State Key Laboratory of Natural
Medicines, Department of Organic Chemistry, China Pharmaceutical University, Nanjing 210009, P. R. China
| | - Ding Du
- State Key Laboratory of Natural
Medicines, Department of Organic Chemistry, China Pharmaceutical University, Nanjing 210009, P. R. China
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50
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Tang W, Du D. Access to Spiro and Fused Indole Derivatives from α,β-Unsaturated Aldehydes Enabled by N-Heterocyclic Carbene Catalysis. CHEM REC 2016; 16:1489-500. [DOI: 10.1002/tcr.201600018] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2016] [Indexed: 01/27/2023]
Affiliation(s)
- Weifang Tang
- State Key Laboratory of Natural Medicines, Department of Organic Chemistry, China Pharmaceutical University; Nanjing 210009 P.R. China
| | - Ding Du
- State Key Laboratory of Natural Medicines, Department of Organic Chemistry, China Pharmaceutical University; Nanjing 210009 P.R. China
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