1
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Huang Y, Peng X, Li T. Recent Advances in NHC-Catalyzed Chemoselective Activation of Carbonyl Compounds. Chem Asian J 2024; 19:e202400097. [PMID: 38451172 DOI: 10.1002/asia.202400097] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2024] [Revised: 03/05/2024] [Accepted: 03/06/2024] [Indexed: 03/08/2024]
Abstract
N-Heterocyclic carbenes (NHCs) catalysts have been employed as effective tools in the development of various reactions, which have made notable contributions in developing diverse reaction modes and generating significant functionalized molecules. This review provides an overview of the recent advancements in the chemo- and regioselective activation of different aldehydes using NHCs, categorized into five parts based on the different activation modes. A brief conclusion and outlook is provided to stimulate the development of novel activation modes for accessing functional molecules.
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Affiliation(s)
- Yixian Huang
- State Key Laboratory of Green Pesticide, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Center for R&D of Fine Chemicals of Guizhou University, Guiyang, 550025, China
| | - Xiaolin Peng
- State Key Laboratory of Green Pesticide, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Center for R&D of Fine Chemicals of Guizhou University, Guiyang, 550025, China
| | - Tingting Li
- State Key Laboratory of Green Pesticide, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Center for R&D of Fine Chemicals of Guizhou University, Guiyang, 550025, China
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2
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Xie L, Zhao C, Wang Z, Chen Z, Zhao Y, Liu X, Xu X, Liu W, Li X, Wu L. Synthesis of Polycyclic Imidazolidinones via Cascade [3 + 2]-Annulation of β-Oxo-acrylamides with Cyclic N-Sulfonyl Imines. J Org Chem 2023; 88:15805-15816. [PMID: 37906181 DOI: 10.1021/acs.joc.3c01878] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2023]
Abstract
An Et3N-catalyzed cascade [3 + 2]-annulation of β-oxo-acrylamides with cyclic N-sulfonyl ketimines or sulfamate-derived imines is developed under mild reaction conditions, which provides a concise and efficient route to access valuable sultam- or sulfamidate-fused imidazolidinone derivatives in good to excellent yields (80-95% yields) with excellent diastereoselectivities (>20:1 drs). The current protocol features atom economy, a transition-metal-free process, and broad functional group tolerance. Moreover, the asymmetric variant of the [3 + 2]-cycloaddition reaction was achieved in the presence of diphenylethanediamine or quinine-based bifunctional squaramide organocatalysts C-1 and C-11, giving the corresponding chiral polycyclic imidazolidinones in 68-90% yields with 25-94% ees and >20:1 drs in all cases.
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Affiliation(s)
- Lei Xie
- School of Pharmaceutical Sciences, Liaocheng University, Liaocheng 252000, Shandong, P. R. China
- Liaocheng Key Laboratory of Quality Control and Pharmacodynamic Evaluation of Ganoderma Lucidum, Liaocheng 252000, Shandong, P. R. China
| | - Chenyi Zhao
- School of Pharmaceutical Sciences, Liaocheng University, Liaocheng 252000, Shandong, P. R. China
- Liaocheng Key Laboratory of Quality Control and Pharmacodynamic Evaluation of Ganoderma Lucidum, Liaocheng 252000, Shandong, P. R. China
| | - Zhaoxue Wang
- School of Pharmaceutical Sciences, Liaocheng University, Liaocheng 252000, Shandong, P. R. China
- Liaocheng Key Laboratory of Quality Control and Pharmacodynamic Evaluation of Ganoderma Lucidum, Liaocheng 252000, Shandong, P. R. China
| | - Zirui Chen
- School of Pharmaceutical Sciences, Liaocheng University, Liaocheng 252000, Shandong, P. R. China
- Liaocheng Key Laboratory of Quality Control and Pharmacodynamic Evaluation of Ganoderma Lucidum, Liaocheng 252000, Shandong, P. R. China
| | - Yingying Zhao
- School of Pharmaceutical Sciences, Liaocheng University, Liaocheng 252000, Shandong, P. R. China
- Liaocheng Key Laboratory of Quality Control and Pharmacodynamic Evaluation of Ganoderma Lucidum, Liaocheng 252000, Shandong, P. R. China
| | - Xinghan Liu
- School of Pharmaceutical Sciences, Liaocheng University, Liaocheng 252000, Shandong, P. R. China
- Liaocheng Key Laboratory of Quality Control and Pharmacodynamic Evaluation of Ganoderma Lucidum, Liaocheng 252000, Shandong, P. R. China
| | - Xiangdong Xu
- Liaocheng Inspection and Testing Center, Liaocheng 252000, Shandong, P. R. China
| | - Wanxing Liu
- The Non-Public Enterprise Service Center of Liaocheng, Liaocheng 252000, Shandong, P. R. China
| | - Xiaojing Li
- School of Pharmaceutical Sciences, Liaocheng University, Liaocheng 252000, Shandong, P. R. China
- Liaocheng Key Laboratory of Quality Control and Pharmacodynamic Evaluation of Ganoderma Lucidum, Liaocheng 252000, Shandong, P. R. China
| | - Lingang Wu
- School of Pharmaceutical Sciences, Liaocheng University, Liaocheng 252000, Shandong, P. R. China
- Liaocheng Key Laboratory of Quality Control and Pharmacodynamic Evaluation of Ganoderma Lucidum, Liaocheng 252000, Shandong, P. R. China
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3
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Wu Q, Han J, Huang J, Zhang H, Ren M, Zhang X, Fu Z. Asymmetric synthesis of chiral pyrazolo[3,4- b]pyridin-6-ones under carbene catalysis. Org Biomol Chem 2023; 21:6898-6902. [PMID: 37581413 DOI: 10.1039/d3ob01057k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/16/2023]
Abstract
A structurally diverse set of chiral pyrazolo[3,4-b]pyridin-6-ones was efficiently prepared in excellent yields with excellent enantioselectivities via N-heterocyclic carbene-catalyzed oxidative [3 + 3] annulation of enals with pyrazol-5-amines. The reaction features mild reaction conditions, a broad substrate scope, and easy scale-up.
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Affiliation(s)
- Qianqian Wu
- Institute of Advanced Materials, Nanjing Tech University, 30 South Puzhu Road, Nanjing 211816, China.
| | - Jinna Han
- Institute of Advanced Materials, Nanjing Tech University, 30 South Puzhu Road, Nanjing 211816, China.
| | - Jie Huang
- Institute of Advanced Materials, Nanjing Tech University, 30 South Puzhu Road, Nanjing 211816, China.
| | - Hailong Zhang
- Institute of Advanced Materials, Nanjing Tech University, 30 South Puzhu Road, Nanjing 211816, China.
| | - Min Ren
- Institute of Advanced Materials, Nanjing Tech University, 30 South Puzhu Road, Nanjing 211816, China.
| | - Xiaoxiang Zhang
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, China
| | - Zhenqian Fu
- Institute of Advanced Materials, Nanjing Tech University, 30 South Puzhu Road, Nanjing 211816, China.
- Ningbo Institute, Chongqing Technology Innovation Center, Frontiers Science Center for Flexible Electronics (FSCFE), Northwestern Polytechnical University, Xi'an 710072, China
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4
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Fan G, Wang Q, Xu J, Zheng P, Chi YR. Carbene-catalyzed chemoselective reaction of unsymmetric enedials for access to Furo[2,3-b]pyrroles. Nat Commun 2023; 14:4243. [PMID: 37454112 PMCID: PMC10349821 DOI: 10.1038/s41467-023-39988-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2023] [Accepted: 07/03/2023] [Indexed: 07/18/2023] Open
Abstract
A carbene-catalyzed chemoselective reaction of unsymmetric enedials is disclosed. The reaction provides a concise access to bicyclic furo[2,3-b]pyrroles derivatives in excellent selectivity. A main challenge in this reaction is chemoselective reaction of the two aldehyde moieties in the enedial substrates. Mechanistic studies via experiments suggest that our chemoselectivity controls are mostly achieved on the reducing properties of different sited Breslow intermediates. Several side reactions processes and the corresponding side adducts are also studied by high resolution mass spectroscopy analysis. Our method allows for efficient assembly of the furo[2,3-b]pyrrole structural moieties and their analogues widely found in natural products and pharmaceuticals.
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Affiliation(s)
- Guodong Fan
- State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Guizhou University, 550025, Guiyang, China
| | - Qingyun Wang
- State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Guizhou University, 550025, Guiyang, China
| | - Jun Xu
- Guizhou University of Traditional Chinese Medicine, 550025, Guiyang, China
| | - Pengcheng Zheng
- State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Guizhou University, 550025, Guiyang, China.
| | - Yonggui Robin Chi
- State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Guizhou University, 550025, Guiyang, China.
- School of Chemistry, Chemical Engineering, and Biotechnology, Nanyang Technological University, Singapore, 637371, Singapore.
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5
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Chen X, He P, Xia S, Cui L, Zhong G, Yang L. NHC-Activations on α-, β-, γ-, and Beyond. CHEM REC 2023:e202200279. [PMID: 36916715 DOI: 10.1002/tcr.202200279] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2022] [Revised: 02/27/2023] [Indexed: 03/15/2023]
Abstract
Over the recent decades, due to the special electronic characteristics and diverse reactivities, N-heterocyclic carbene (NHC) has received significant interest in organocatalyzed reactions. The formation of Breslow intermediates by NHC can convert into acyl anion equivalent, enolates, homoenolate, acyl azolium, and vinyl enolate etc., and the cycloaddition reactions of these species has attracted lots of attention. In this review, we focus on the summry of the development of NHC-activation of carbonyl carbon (or imine carbon) in situ, α-, β-, γ-, and beyond, and the cycloaddition reaction of these species.
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Affiliation(s)
- Xiaoyu Chen
- College of Material, Chemistry and Chemical Engineering, Hangzhou Normal University, Hangzhou, 311121, China
| | - Pengyu He
- College of Material, Chemistry and Chemical Engineering, Hangzhou Normal University, Hangzhou, 311121, China
| | - Siqi Xia
- College of Material, Chemistry and Chemical Engineering, Hangzhou Normal University, Hangzhou, 311121, China
| | - Lixin Cui
- College of Material, Chemistry and Chemical Engineering, Hangzhou Normal University, Hangzhou, 311121, China
| | - Guofu Zhong
- Department of Chemistry, Eastern Institute for Advanced Study, Ningbo, 315200, China.,School of Chemistry and Chemical Engineering, Qufu Normal University, Qufu, 273165, Shandong, China
| | - Limin Yang
- College of Material, Chemistry and Chemical Engineering, Hangzhou Normal University, Hangzhou, 311121, China
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6
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Zhang CL, Wang HY, Huang Y, Wang XH, Ye S. N-Heterocyclic Carbene Catalyzed Three-Component Reaction for the Synthesis of Multi-substituted Benzenes. Org Lett 2022; 24:7747-7751. [DOI: 10.1021/acs.orglett.2c03061] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Chun-Lin Zhang
- 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, 100190 Beijing, China
| | - Hai-Ying 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, 100190 Beijing, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Ying Huang
- 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, 100190 Beijing, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Xin-Han 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, 100190 Beijing, China
- University of Chinese Academy of Sciences, Beijing 100049, 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, 100190 Beijing, China
- University of Chinese Academy of Sciences, Beijing 100049, China
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7
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Wang G, Huang J, Zhang L, Han J, Zhang X, Huang J, Fu Z, Huang W. N-heterocyclic carbene-catalyzed atroposelective synthesis of axially chiral 5-aryl 2-pyrones from enals. Sci China Chem 2022. [DOI: 10.1007/s11426-022-1327-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/03/2023]
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8
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Zhou P, Li W, Lan J, Zhu T. Electroredox carbene organocatalysis with iodide as promoter. Nat Commun 2022; 13:3827. [PMID: 35780238 PMCID: PMC9250514 DOI: 10.1038/s41467-022-31453-7] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2021] [Accepted: 06/14/2022] [Indexed: 11/09/2022] Open
Abstract
Oxidative carbene organocatalysis, inspired from Vitamin B1 catalyzed oxidative activation from pyruvate to acetyl coenzyme A, have been developed as a versatile synthetic method. To date, the α-, β-, γ-, δ- and carbonyl carbons of (unsaturated)aldehydes have been successfully activated via oxidative N-heterocyclic carbene (NHC) organocatalysis. In comparison with chemical redox or photoredox methods, electroredox methods, although widely used in mechanistic study, were much less developed in NHC catalyzed organic synthesis. Herein, an iodide promoted electroredox NHC organocatalysis system was developed. This system provided general solutions for electrochemical single-electron-transfer (SET) oxidation of Breslow intermediate towards versatile transformations. Radical clock experiment and cyclic voltammetry results suggested an anodic radical coupling pathway.
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Affiliation(s)
- Peng Zhou
- School of chemistry, Sun Yat-sen University, Guangzhou, 510006, China
| | - Wenchang Li
- School of chemistry, Sun Yat-sen University, Guangzhou, 510006, China
| | - Jianyong Lan
- School of chemistry, Sun Yat-sen University, Guangzhou, 510006, China
| | - Tingshun Zhu
- School of chemistry, Sun Yat-sen University, Guangzhou, 510006, China.
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9
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Chu Y, Wu M, Hu F, Zhou P, Cao Z, Hui XP. N-Heterocyclic Carbene-Catalyzed Atroposelective Synthesis of Pyrrolo[3,4- b]pyridines with Configurationally Stable C-N Axial Chirality. Org Lett 2022; 24:3884-3889. [PMID: 35609114 DOI: 10.1021/acs.orglett.2c01519] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
The first atroposelective synthesis of pyrrolo[3,4-b]pyridines catalyzed by N-heterocyclic carbene has been achieved. A wide range of chiral atropisomers of pyrrolo[3,4-b]pyridines were obtained in high yields with excellent enantioselectivities (96-99% enantiomeric excess). The experimental results and density functional theory calculations showed that the C-N axial chirality of the product had high thermal stability.
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Affiliation(s)
- Yunpeng Chu
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, P. R. China
| | - Meng Wu
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, P. R. China
| | - Fang Hu
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, P. R. China
| | - Panpan Zhou
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, P. R. China
| | - Zhengqiang Cao
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, P. R. China
| | - Xin-Ping Hui
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, P. R. China
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10
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Li G, Zhang Y, Zeng H, Feng X, Su Z, Lin L. Water enables diastereodivergency in bispidine-based chiral amine-catalyzed asymmetric Mannich reaction of cyclic N-sulfonyl ketimines with ketones. Chem Sci 2022; 13:4313-4320. [PMID: 35509468 PMCID: PMC9006921 DOI: 10.1039/d2sc00446a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2022] [Accepted: 03/20/2022] [Indexed: 01/23/2023] Open
Abstract
Tuning diastereoselectivity is a great challenge in asymmetric catalysis for the inherent stereochemical bias of the substrates. Here, we report a diastereodivergent asymmetric Mannich reaction of cyclic N-sulfonyl ketimines with ketones catalyzed by a bispidine-based chiral amine catalyst, in which additional water switches the diastereoselectivity efficiently. Both chiral anti- and syn-benzosultams with potential anti-HIV-1 activity are obtained in excellent yields and good to excellent ee values. Control experiments and density functional theory (DFT) calculations were applied to study the diastereodivergent mechanism, which reveal that the diastereodivergent catalysis should be state-determined, and the water reverses the energies of states to realize the diastereodivergency. The findings are quite new and might inspire more diastereodivergent asymmetric synthesis. A diastereodivergent asymmetric Mannich reaction of cyclic N-sulfonyl ketimines with ketones is realized by employing bispidine-based chiral amine as catalyst and additional water switching the diastereoselectivity.![]()
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Affiliation(s)
- Gonglin Li
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University Chengdu 610064 China http://www.scu.edu.cn/chem_asl/
| | - Yan Zhang
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University Chengdu 610064 China http://www.scu.edu.cn/chem_asl/
| | - Hongkun Zeng
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University Chengdu 610064 China http://www.scu.edu.cn/chem_asl/
| | - Xiaoming Feng
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University Chengdu 610064 China http://www.scu.edu.cn/chem_asl/
| | - Zhishan Su
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University Chengdu 610064 China http://www.scu.edu.cn/chem_asl/
| | - Lili Lin
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University Chengdu 610064 China http://www.scu.edu.cn/chem_asl/
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11
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Xu ZH, Jia SK, Chang ZR, Hua YZ, Wang MC, Mei GJ. Facile access to saccharin‐fused 1,4‐dihydropyridines via [3 + 3] annulation reactions. European J Org Chem 2022. [DOI: 10.1002/ejoc.202101423] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Zhi-Hua Xu
- Zhengzhou University College of Chemistry CHINA
| | - Shi-Kun Jia
- Zhengzhou University College of Chemistry CHINA
| | | | | | | | - Guang-Jian Mei
- Zhengzhou University Chemistry Zhengzhou 450001 450001 Zhengzhou CHINA
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12
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Chen Y, Shi B, Yin H, Liu Y, Yu C, Zhang K, Li T, Yao C. Stereoselective synthesis of chiral sultam-fused dihydropyridinones via photopromoted NHC catalyzed [4 + 2] annulation. Org Chem Front 2022. [DOI: 10.1039/d2qo00908k] [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 photopromoted NHC catalyzed asymmetric [4+2] annulation of saccharine-derived azadienes and α-diazoketones was developed, affording the corresponding sultam-fused dihydropyridinones efficiently (up to 80% yield, 99% ee and >20 : 1 d.r.).
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Affiliation(s)
- Yangxu Chen
- Jiangsu Key Lab of Green Synthetic Chemistry for Functional Materials, School of Chemistry and Materials Science, Jiangsu Normal University, Xuzhou, Jiangsu 221116, P R China
| | - Bai Shi
- Jiangsu Key Lab of Green Synthetic Chemistry for Functional Materials, School of Chemistry and Materials Science, Jiangsu Normal University, Xuzhou, Jiangsu 221116, P R China
| | - Huiping Yin
- Jiangsu Key Lab of Green Synthetic Chemistry for Functional Materials, School of Chemistry and Materials Science, Jiangsu Normal University, Xuzhou, Jiangsu 221116, P R China
| | - Yinping Liu
- Jiangsu Key Lab of Green Synthetic Chemistry for Functional Materials, School of Chemistry and 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 and Materials Science, Jiangsu Normal University, Xuzhou, Jiangsu 221116, P R China
| | - Kai Zhang
- Jiangsu Key Lab of Green Synthetic Chemistry for Functional Materials, School of Chemistry and 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 and 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 and Materials Science, Jiangsu Normal University, Xuzhou, Jiangsu 221116, P R China
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13
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Liu W, Zhang L, Liao X, Chen J, Huang Y. An NHC-Catalyzed [3+2] Cyclization of β-Disubstituted Enals with Benzoyl Cyanides. Chem Commun (Camb) 2022; 58:9742-9745. [DOI: 10.1039/d2cc04025e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The NHC-catalyzed asymmetric [3+2] cyclization of benzoyl cyanides to homoenolate generated in-situ from enals was reported. This methodology leads to the efficient construction of a series of chiral cyclic compounds...
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14
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Maiti R, Yan J, Yang X, Mondal B, Xu J, Chai H, Jin Z, Chi YR. Carbene‐Catalyzed Enantioselective Hydrophosphination of α‐Bromoenals to Prepare Phosphine‐Containing Chiral Molecules. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202112860] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Rakesh Maiti
- Division of Chemistry & Mathematical Science School of Physical & Mathematical Sciences Nanyang Technological University Singapore 637371 Singapore
| | - Jia‐Lei Yan
- Division of Chemistry & Mathematical Science School of Physical & Mathematical Sciences Nanyang Technological University Singapore 637371 Singapore
| | - Xing Yang
- Division of Chemistry & Mathematical Science School of Physical & Mathematical Sciences Nanyang Technological University Singapore 637371 Singapore
| | - Bivas Mondal
- Division of Chemistry & Mathematical Science School of Physical & Mathematical Sciences Nanyang Technological University Singapore 637371 Singapore
| | - Jun Xu
- Guizhou University of Traditional Chinese Medicine Guiyang 550025 China
| | - Huifang Chai
- Guizhou University of Traditional Chinese Medicine Guiyang 550025 China
| | - Zhichao Jin
- Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering Key Laboratory of Green Pesticide and Agricultural Bioengineering Ministry of Education, Guizhou University Huaxi District Guiyang 550025 China
| | - Yonggui Robin Chi
- Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering Key Laboratory of Green Pesticide and Agricultural Bioengineering Ministry of Education, Guizhou University Huaxi District Guiyang 550025 China
- Division of Chemistry & Mathematical Science School of Physical & Mathematical Sciences Nanyang Technological University Singapore 637371 Singapore
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15
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Maiti R, Yan JL, Yang X, Mondal B, Xu J, Chai H, Jin Z, Chi YR. Carbene-Catalyzed Enantioselective Hydrophosphination of α-Bromoenals to Prepare Phosphine-Containing Chiral Molecules. Angew Chem Int Ed Engl 2021; 60:26616-26621. [PMID: 34599547 DOI: 10.1002/anie.202112860] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2021] [Indexed: 11/07/2022]
Abstract
Disclosed herein is the first carbene-organocatalyzed asymmetric addition of phosphine nucleophiles to the in situ generated α,β-unsaturated acyl azolium intermediates. Our reaction enantioselectively constructs carbon-phosphine bonds and prepares chiral phosphines with high optical purities. The phosphine products are suitable for transforming to chiral ligands or catalysts with applications in asymmetric catalysis. The diarylalkyl or trialkyl phosphine products from our catalytic reactions, air-sensitive and reactive in nature, can be trapped (and stored) in their sulfur-oxidized form for operational simplicities.
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Affiliation(s)
- Rakesh Maiti
- Division of Chemistry & Mathematical Science, School of Physical & Mathematical Sciences, Nanyang Technological University, Singapore, 637371, Singapore
| | - Jia-Lei Yan
- Division of Chemistry & Mathematical Science, School of Physical & Mathematical Sciences, Nanyang Technological University, Singapore, 637371, Singapore
| | - Xing Yang
- Division of Chemistry & Mathematical Science, School of Physical & Mathematical Sciences, Nanyang Technological University, Singapore, 637371, Singapore
| | - Bivas Mondal
- Division of Chemistry & Mathematical Science, School of Physical & Mathematical Sciences, Nanyang Technological University, Singapore, 637371, Singapore
| | - Jun Xu
- Guizhou University of Traditional Chinese Medicine, Guiyang, 550025, China
| | - Huifang Chai
- Guizhou University of Traditional Chinese Medicine, Guiyang, 550025, China
| | - Zhichao Jin
- Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Guizhou University, Huaxi District, Guiyang, 550025, China
| | - Yonggui Robin Chi
- Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Guizhou University, Huaxi District, Guiyang, 550025, China.,Division of Chemistry & Mathematical Science, School of Physical & Mathematical Sciences, Nanyang Technological University, Singapore, 637371, Singapore
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16
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Guin S, Majee D, Samanta S. Unmasking the reverse reactivity of cyclic N-sulfonyl ketimines: multifaceted applications in organic synthesis. Chem Commun (Camb) 2021; 57:9010-9028. [PMID: 34498642 DOI: 10.1039/d1cc03439a] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
The chemistry related to the exploration of cyclic N-sulfonyl ketimines and their derivatives has attracted significant attention in the last few decades because of their intriguing structures and properties. They serve broadly as reactive synthons in various reactions to create a diverse set of synthetically and biologically attractive molecules. Furthermore, these moieties, which possess multiple heteroatoms (N, O and S), display or can enhance many biological activities. In the case of synthetic reactions, chemists mainly focus on the chemical manipulation of the highly reactive prochiral CN bond of N-sulfonyl ketimines. Besides their traditional role as electrophiles, N-sulfonyl ketimines possess α-Csp3-H protons, and thus behave as potential carbonucleophiles, where they can undergo several C-X (X = C, N and O) bond-forming reactions with different types of electrophiles under various conditions to form a wide range of fascinating asymmetric and non-asymmetric versions of fused heterocycles, carbocycles, spiro-fused skeletons, pyridines, pyrroles, etc. Herein, we highlight the recent examples from our research work and others covering the scope of cyclic N-sulfonyl ketimines as useful carbonucleophiles. In addition, the detailed mechanistic studies of the above-mentioned reactions are also presented.
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Affiliation(s)
- Soumitra Guin
- Department of Chemistry, Indian Institute of Technology Indore, Simrol, Indore, 453552, India.
| | - Debashis Majee
- Department of Chemistry, Indian Institute of Technology Indore, Simrol, Indore, 453552, India.
| | - Sampak Samanta
- Department of Chemistry, Indian Institute of Technology Indore, Simrol, Indore, 453552, India.
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17
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N-heterocyclic carbene-catalyzed intramolecular aza-Michael addition of alkyl amines to α,β-unsaturated carboxylic acid: Synthesis of pyrrolidines and piperidines. Tetrahedron 2021. [DOI: 10.1016/j.tet.2021.132337] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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18
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Pavithra T, Devi ES, Maheswari CU. Recent Advances in N‐Heterocyclic Carbene Catalyzed Oxidative Cyclization for the Formation of Heterocycles. ASIAN J ORG CHEM 2021. [DOI: 10.1002/ajoc.202100289] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- T. Pavithra
- Department of Chemistry, School of Chemical and Biotechnology SASTRA Deemed University Thanjavur 613401 India
| | - E. Sankari Devi
- Department of Chemistry, School of Chemical and Biotechnology SASTRA Deemed University Thanjavur 613401 India
| | - C. Uma Maheswari
- Department of Chemistry, School of Chemical and Biotechnology SASTRA Deemed University Thanjavur 613401 India
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19
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Ghosh A, Biju AT. Revealing the Similarities of α,β-Unsaturated Iminiums and Acylazoliums in Organocatalysis. Angew Chem Int Ed Engl 2021; 60:13712-13724. [PMID: 33205860 DOI: 10.1002/anie.202012581] [Citation(s) in RCA: 36] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2020] [Indexed: 01/05/2023]
Abstract
The secondary amine-catalyzed reactions proceeding via α,β-unsaturated iminiums and the N-heterocyclic carbene (NHC)-catalyzed transformations taking place via α,β-unsaturated acylazoliums are the two widely used electrophilic intermediates in organocatalysis. Over the last two decades, these two intermediates are extensively utilized for the enantioselective construction of valuable molecules. Both intermediates are generated by the covalent binding of catalysts to the substrates leading to LUMO activation of α,β-unsaturated carbonyls. A variety of soft nucleophiles are known to add to the α,β-unsaturated iminiums and acylazoliums in a conjugate fashion, and in many cases, striking similarity in reactivity has been observed. Having said this, there are few cases where these intermediates exhibit difference in reactivity. This Minireview is aimed at highlighting the resemblances in reactivity between α,β-unsaturated iminiums and acylazoliums thereby shedding light on the unnoticed parallels of the two intermediates in organocatalysis.
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Affiliation(s)
- Arghya Ghosh
- Department of Organic Chemistry, Indian Institute of Science, Bangalore, 560012, India
| | - Akkattu T Biju
- Department of Organic Chemistry, Indian Institute of Science, Bangalore, 560012, India
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20
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Ghosh A, Biju AT. Revealing the Similarities of α,β‐Unsaturated Iminiums and Acylazoliums in Organocatalysis. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202012581] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Arghya Ghosh
- Department of Organic Chemistry Indian Institute of Science Bangalore 560012 India
| | - Akkattu T. Biju
- Department of Organic Chemistry Indian Institute of Science Bangalore 560012 India
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21
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Jiang P, Guo J, Gong M, Zhou X, Cao W, Fu Z, Huang W. N-Heterocyclic carbene-catalyzed [3 + 3] annulation of bromoenals with 2-aminochromones to access chromeno[2,3- b]pyridinones. Org Biomol Chem 2021; 19:4882-4886. [PMID: 34013952 DOI: 10.1039/d1ob00720c] [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
N-Heterocyclic carbene-catalyzed [3 + 3] annulation of bromoenals with 2-aminochromones has been successfully developed. A structurally diverse set of chromeno[2,3-b]pyridinones was efficiently constructed in acceptable to excellent yields. The reaction features mild reaction conditions, a broad substrate scope, and easy scale-up.
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Affiliation(s)
- Pengrui Jiang
- Key Laboratory of Flexible Electronics & Institute of Advanced Materials, Nanjing Tech University, 30 South Puzhu Road, Nanjing 211816, China.
| | - Jingcheng Guo
- Key Laboratory of Flexible Electronics & Institute of Advanced Materials, Nanjing Tech University, 30 South Puzhu Road, Nanjing 211816, China.
| | - Minghua Gong
- Key Laboratory of Flexible Electronics & Institute of Advanced Materials, Nanjing Tech University, 30 South Puzhu Road, Nanjing 211816, China.
| | - Xiangui Zhou
- Key Laboratory of Flexible Electronics & Institute of Advanced Materials, Nanjing Tech University, 30 South Puzhu Road, Nanjing 211816, China.
| | - Wei Cao
- Key Laboratory of Flexible Electronics & Institute of Advanced Materials, Nanjing Tech University, 30 South Puzhu Road, Nanjing 211816, China.
| | - Zhenqian Fu
- Key Laboratory of Flexible Electronics & Institute of Advanced Materials, Nanjing Tech University, 30 South Puzhu Road, Nanjing 211816, China.
| | - Wei Huang
- Key Laboratory of Flexible Electronics & Institute of Advanced Materials, Nanjing Tech University, 30 South Puzhu Road, Nanjing 211816, China.
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22
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Zhang Q, Das DK, Yang S, Fu Y, Fang X. Mechanistic Studies on N-Heterocyclic Carbene-Catalyzed Umpolung of β,γ-Unsaturated α-Diketones. J Org Chem 2021; 86:4432-4439. [PMID: 33719444 DOI: 10.1021/acs.joc.0c02565] [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
The mechanism of N-heterocyclic carbene-catalyzed umpolung of β,γ-unsaturated α-diketone was studied using both density functional theory (DFT) calculations and experimental methods. In contrast to the originally proposed mechanism, the calculations revealed a more complicated process involving both nucleophilic O-acylated homoenolate and electrophilic α,β-unsaturated acyl azolium intermediates. The experimental studies confirmed the existence of the aforementioned two key intermediates. A revised mechanism has been proposed to demonstrate the detailed mechanistic insights into the product formation.
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Affiliation(s)
- Qi Zhang
- Institute of Industry and Equipment Technology, Hefei University of Technology, Hefei 230009, China
| | - Deb Kumar Das
- State Key Laboratory of Structural Chemistry, and 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, Fuzhou 350100, China
| | - Shuang Yang
- State Key Laboratory of Structural Chemistry, and 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, Fuzhou 350100, China
| | - Yao Fu
- Department of Chemistry, University of Science and Technology of China, Hefei 230026, China
| | - Xinqiang Fang
- State Key Laboratory of Structural Chemistry, and 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, Fuzhou 350100, China
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23
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Di H, Liu Y, Ma Y, Yang X, Jin H, Zhang L. Recent Advances in Organocatalytic Asymmetric Synthesis of 3,4-Dihydropyran-2-ones and 3,4-Dihydropyridin-2-ones. CHINESE J ORG CHEM 2021. [DOI: 10.6023/cjoc202010039] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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24
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Jethava KP, Fine J, Chen Y, Hossain A, Chopra G. Accelerated Reactivity Mechanism and Interpretable Machine Learning Model of N-Sulfonylimines toward Fast Multicomponent Reactions. Org Lett 2020; 22:8480-8486. [PMID: 33074678 DOI: 10.1021/acs.orglett.0c03083] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
We introduce chemical reactivity flowcharts to help chemists interpret reaction outcomes using statistically robust machine learning models trained on a small number of reactions. We developed fast N-sulfonylimine multicomponent reactions for understanding reactivity and to generate training data. Accelerated reactivity mechanisms were investigated using density functional theory. Intuitive chemical features learned by the model accurately predicted heterogeneous reactivity of N-sulfonylimine with different carboxylic acids. Validation of the predictions shows that reaction outcome interpretation is useful for human chemists.
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25
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Meng D, Xie Y, Peng Q, Wang J. NHC-Catalyzed Enantioselective [3 + 3] Annulation to Construct 5,6-Dihydropyrimidin-4-ones. Org Lett 2020; 22:7635-7639. [PMID: 32964708 DOI: 10.1021/acs.orglett.0c02832] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The unprecedented enantioselective NHC-catalyzed [3 + 3] annulation of α-bromoenals with amidines via a dual C-N bond formation is described. The protocol allows a rapid preparation of 5,6-dihydropyrimidinones in acceptable yields with good enantioselectivities.
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Affiliation(s)
- Di Meng
- School of Biotechnology and Health Sciences, Jiangmen International Healthcare Innovation Institute, Wuyi University, Jiangmen 529020, China.,School of Chemical Engineering and Light Industry, Guangdong University of Technology, Guangzhou 510006, China
| | - Yangxi Xie
- School of Pharmaceutical Sciences, Tsinghua University, Beijing 100084, China
| | - Qiupeng Peng
- School of Pharmaceutical Sciences, Tsinghua University, Beijing 100084, China
| | - Jian Wang
- School of Biotechnology and Health Sciences, Jiangmen International Healthcare Innovation Institute, Wuyi University, Jiangmen 529020, China.,School of Pharmaceutical Sciences, Tsinghua University, Beijing 100084, China
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26
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Zhang S, Bacheley L, Young CM, Stark DG, O'Riordan T, Slawin AMZ, Smith AD. Isothiourea‐Catalyzed Functionalization of Pyrrolyl‐ and Indolylacetic Acid: Enantioselective Synthesis of Dihydropyridinones and One‐pot Synthesis of Pyridinones. ASIAN J ORG CHEM 2020. [DOI: 10.1002/ajoc.202000290] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Shuyue Zhang
- EastCHEM School of Chemistry University of St Andrews North Haugh Fife Scotland Scotland KY16 9ST UK
| | - Lucas Bacheley
- EastCHEM School of Chemistry University of St Andrews North Haugh Fife Scotland Scotland KY16 9ST UK
| | - Claire M. Young
- EastCHEM School of Chemistry University of St Andrews North Haugh Fife Scotland Scotland KY16 9ST UK
| | - Daniel G. Stark
- EastCHEM School of Chemistry University of St Andrews North Haugh Fife Scotland Scotland KY16 9ST UK
| | - Timothy O'Riordan
- Syngenta Jealott's Hill International Research Centre Bracknell Berkshire RG42 6EY UK
| | - Alexandra M. Z. Slawin
- EastCHEM School of Chemistry University of St Andrews North Haugh Fife Scotland Scotland KY16 9ST UK
| | - Andrew D. Smith
- EastCHEM School of Chemistry University of St Andrews North Haugh Fife Scotland Scotland KY16 9ST UK
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27
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Peng X, Xu J, Li T, Chi YR, Jin Z. Chemo-selective cross reaction of two enals via carbene-catalyzed dual activation. Chem Sci 2020; 11:12533-12539. [PMID: 34123233 PMCID: PMC8162827 DOI: 10.1039/d0sc03297b] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
A dual catalytic chemo-selective cross-coupling reaction of two enals is developed. One enal (without α-substitution) is activated by an NHC catalyst to form an acylazolium enolate intermediate that undergoes Michael-type addition to another enal molecule bearing an alkynyl substituent. Mechanistic studies indicate that non-covalent interactions between the alkynyl enal and the NHC·HX catalyst play important roles in substrate activation and enantioselectivity control. Many of the possible side reactions are not observed. Our reaction provides highly chemo- and diastereo-selective access to chiral lactones containing functionalizable 1,3-enyn units with excellent enantioselectivities (95 to >99% ee). An NHC-catalyzed dual activation of two different enals is disclosed with both covalent and non-covalent activation pathways involved.![]()
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Affiliation(s)
- Xiaolin Peng
- Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering Ministry of Education, Guizhou University Huaxi District Guiyang 550025 China
| | - Jun Xu
- School of Pharmacy, Guiyang College of Traditional Chinese Medicine Huaxi District Guiyang 550025 China.,Division of Chemistry & Biological Chemistry, School of Physical & Mathematical Sciences, Nanyang Technological University Singapore 637371 Singapore
| | - Tingting Li
- Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering Ministry of Education, Guizhou University Huaxi District Guiyang 550025 China
| | - Yonggui Robin Chi
- Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering Ministry of Education, Guizhou University Huaxi District Guiyang 550025 China.,Division of Chemistry & Biological Chemistry, School of Physical & Mathematical Sciences, Nanyang Technological University Singapore 637371 Singapore
| | - Zhichao Jin
- Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering Ministry of Education, Guizhou University Huaxi District Guiyang 550025 China
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28
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Das TK, Biju AT. Imines as acceptors and donors in N-heterocyclic carbene (NHC) organocatalysis. Chem Commun (Camb) 2020; 56:8537-8552. [PMID: 32602493 DOI: 10.1039/d0cc03290e] [Citation(s) in RCA: 49] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
The synthetic potential of imines as electrophiles or as a source of nucleophilic coupling partner in N-heterocyclic carbene (NHC) catalysis for the synthesis of various nitrogen heterocycles and functionalized amines is highlighted in this Feature Article. Electrophilic imines are suitable candidates for intercepting the NHC-derived acyl anions, homoenolate equivalents, and (di)enolates for the synthesis of α-amino ketones and a variety of lactam derivatives. Moreover, enamines generated from imines bearing α-hydrogen could be trapped with α,β-unsaturated acylazoliums for the synthesis of functionalized dihydropyridinones. NHCs are also useful for the umpolung of imines for the generation of aza-Breslow intermediates thus leading to the synthesis of indoles, quinolines, dihydroquinoxalines etc. A concise account of the diverse reactivity of imines in NHC catalysis has been presented.
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Affiliation(s)
- Tamal Kanti Das
- Organic Chemistry Division, CSIR-National Chemical Laboratory (CSIR-NCL), Dr Homi Bhabha Road, Pune-411008, India and Academy of Scientific and Innovative Research (AcSIR), New Delhi 110020, India
| | - Akkattu T Biju
- Department of Organic Chemistry, Indian Institute of Science, Bangalore-560012, India.
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29
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Li Y, Liu J, Chen X, Zhou Y, Xiao Y, Chen F. Asymmetric Alkynylation of Cyclic
N
‐Sulfonyl Imines using Synergistic Chiral Phosphoric Acid/Copper Catalysis. Adv Synth Catal 2020. [DOI: 10.1002/adsc.202000504] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Affiliation(s)
- Ya‐Ling Li
- Sichuan Research Center for Drug Precision Industrial TechnologyWest China School of PharmacySichuan University Chengdu 610041 People's Republic of China
| | - Jin‐Xin Liu
- Sichuan Research Center for Drug Precision Industrial TechnologyWest China School of PharmacySichuan University Chengdu 610041 People's Republic of China
| | - Xiao‐Pan Chen
- Sichuan Research Center for Drug Precision Industrial TechnologyWest China School of PharmacySichuan University Chengdu 610041 People's Republic of China
| | - Yuan Zhou
- Sichuan Research Center for Drug Precision Industrial TechnologyWest China School of PharmacySichuan University Chengdu 610041 People's Republic of China
| | - You‐Cai Xiao
- Sichuan Research Center for Drug Precision Industrial TechnologyWest China School of PharmacySichuan University Chengdu 610041 People's Republic of China
| | - Fen‐Er Chen
- Sichuan Research Center for Drug Precision Industrial TechnologyWest China School of PharmacySichuan University Chengdu 610041 People's Republic of China
- Engineering Center of Catalysis and Synthesis for Chiral MoleculesDepartment of ChemistryFudan University Shanghai 200433 People's Republic of China
- Shanghai Engineering Center of Industrial Asymmetric Catalysis for Chiral Drugs Shanghai 200433 People's Republic of China
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30
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Chen X, Wang H, Jin Z, Chi YR. N
‐Heterocyclic
Carbene Organocatalysis: Activation Modes and Typical Reactive Intermediates. CHINESE J CHEM 2020. [DOI: 10.1002/cjoc.202000107] [Citation(s) in RCA: 92] [Impact Index Per Article: 23.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Xingkuan Chen
- Department of Chemistry, Jinan University Guangzhou Guangdong 510632 China
| | - Hongling Wang
- Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Guizhou University Huaxi District Guiyang Guizhou 550025 China
| | - Zhichao Jin
- Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Guizhou University Huaxi District Guiyang Guizhou 550025 China
| | - Yonggui Robin Chi
- Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Guizhou University Huaxi District Guiyang Guizhou 550025 China
- Division of Chemistry & Biological Chemistry, School of Physical & Mathematical Sciences, Nanyang Technological University Singapore 637371 Singapore
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31
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Li X, Xu J, Li SJ, Qu LB, Li Z, Chi YR, Wei D, Lan Y. Prediction of NHC-catalyzed chemoselective functionalizations of carbonyl compounds: a general mechanistic map. Chem Sci 2020; 11:7214-7225. [PMID: 34123007 PMCID: PMC8159411 DOI: 10.1039/d0sc01793k] [Citation(s) in RCA: 36] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Abstract
Generally, N-heterocyclic carbene (NHC) complexed with carbonyl compounds would transform into several important active intermediates, i.e., enolates, Breslow intermediates, or acylazolium intermediates, which act as either a nucleophile (Nu) or an electrophile (E) to react with the other E/Nu partner. Hence, the key to predicting the origin of chemoselectivity is to compute the activity (i.e., electrophilic index ω for E and nucleophilic index N for Nu) and stability of the intermediates and products, which are suggested in a general mechanistic map of these reactions. To support this point, we selected and studied different cases of the NHC-catalyzed reactions of carbonyl compounds in the presence of a base and/or an oxidant, in which multiple possible pathways involving acylazolium, enolate, Breslow, and α,β-unsaturated acylazolium intermediates were proposed and a novel index ω + N of the E and Nu partners was employed to exactly predict the energy barrier of the chemoselective step in theory. This work provides a guide for determining the general principle behind organocatalytic reactions with various chemoselectivities, and suggests a general application of the reaction index in predicting the chemoselectivity of the nucleophilic and electrophilic reactions. A novel index ω + N can be used to predict the chemoselectivity according to the general NHC-catalyzed reaction mechanism.![]()
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Affiliation(s)
- Xue Li
- College of Chemistry, Institute of Green Catalysis, Zhengzhou University 100 Science Avenue Zhengzhou Henan 450001 China
| | - Jun Xu
- College of Pharmacy, Guizhou University of Traditional Chinese Medicine Guiyang China
| | - Shi-Jun Li
- College of Chemistry, Institute of Green Catalysis, Zhengzhou University 100 Science Avenue Zhengzhou Henan 450001 China
| | - Ling-Bo Qu
- College of Chemistry, Institute of Green Catalysis, Zhengzhou University 100 Science Avenue Zhengzhou Henan 450001 China
| | - Zhongjun Li
- College of Chemistry, Institute of Green Catalysis, Zhengzhou University 100 Science Avenue Zhengzhou Henan 450001 China
| | - Yonggui Robin Chi
- Division of Chemistry & Biological Chemistry, School of Physical & Mathematical Sciences, Nanyang Technological University Singapore 637371 Singapore
| | - Donghui Wei
- College of Chemistry, Institute of Green Catalysis, Zhengzhou University 100 Science Avenue Zhengzhou Henan 450001 China
| | - Yu Lan
- College of Chemistry, Institute of Green Catalysis, Zhengzhou University 100 Science Avenue Zhengzhou Henan 450001 China .,College of Chemistry and Chemical Engineering, Chongqing University Chongqing 400044 China
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32
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Dzieszkowski K, Barańska I, Rafiński Z. Construction of Dihydropyrido[2,3- d]pyrimidine Scaffolds via Aza-Claisen Rearrangement Catalyzed by N-Heterocyclic Carbenes. J Org Chem 2020; 85:6645-6662. [PMID: 32312044 PMCID: PMC7590975 DOI: 10.1021/acs.joc.0c00657] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
N-Heterocyclic carbenes (NHCs) catalyzing aza-Claisen rearrangement of α,β-unsaturated enals with cyclic vinylogous amides under oxidative conditions generating potentially biologically active dihydropyridinone-fused uracils have been developed. This strategy represents a unique NHC-activation-based path with the use of 6-aminouracils as stable α,β-diEWG cyclic vinylogous amides for the efficient synthesis of bicyclic N-unprotected lactams similar to those in many useful drugs.
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Affiliation(s)
- Krzysztof Dzieszkowski
- Faculty of Chemistry, Nicolaus Copernicus University in Torun, 7 Gagarin Street, 87-100 Torun, Poland
| | - Izabela Barańska
- Faculty of Chemistry, Nicolaus Copernicus University in Torun, 7 Gagarin Street, 87-100 Torun, Poland
| | - Zbigniew Rafiński
- Faculty of Chemistry, Nicolaus Copernicus University in Torun, 7 Gagarin Street, 87-100 Torun, Poland
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33
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Barik S, Shee S, Ghosh A, Biju AT. Catalytic, Enantioselective C2-Functionalization of 3-Aminobenzofurans Using N-Heterocyclic Carbenes. Org Lett 2020; 22:3865-3869. [DOI: 10.1021/acs.orglett.0c01112] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Shilpa Barik
- Department of Organic Chemistry, Indian Institute of Science, Bangalore 560012, India
| | - Sayan Shee
- Department of Organic Chemistry, Indian Institute of Science, Bangalore 560012, India
| | - Arghya Ghosh
- Department of Organic Chemistry, Indian Institute of Science, Bangalore 560012, India
| | - Akkattu T. Biju
- Department of Organic Chemistry, Indian Institute of Science, Bangalore 560012, India
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34
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Zhang X, Chen Q, Song R, Xu J, Tian W, Li S, Jin Z, Chi YR. Carbene-Catalyzed α,γ-Deuteration of Enals under Oxidative Conditions. ACS Catal 2020. [DOI: 10.1021/acscatal.0c00636] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Affiliation(s)
- Xiaolei Zhang
- Division of Chemistry & Biological Chemistry, School of Physical & Mathematical Sciences, Nanyang Technological University, Singapore 637371, Singapore
| | - Qiao Chen
- Division of Chemistry & Biological Chemistry, School of Physical & Mathematical Sciences, Nanyang Technological University, Singapore 637371, Singapore
| | - Runjiang Song
- Division of Chemistry & Biological Chemistry, School of Physical & Mathematical Sciences, Nanyang Technological University, Singapore 637371, Singapore
| | - Jun Xu
- Division of Chemistry & Biological Chemistry, School of Physical & Mathematical Sciences, Nanyang Technological University, Singapore 637371, Singapore
- School of Pharmacy, Guizhou University of Traditional Chinese Medicine, Huaxi District, Guiyang 550025, China
| | - Weiyi Tian
- School of Pharmacy, Guizhou University of Traditional Chinese Medicine, Huaxi District, Guiyang 550025, China
| | - Shaoyuan Li
- Division of Chemistry & Biological Chemistry, School of Physical & Mathematical Sciences, Nanyang Technological University, Singapore 637371, Singapore
- Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Guizhou University, Huaxi District, Guiyang 550025, China
| | - Zhichao Jin
- Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Guizhou University, Huaxi District, Guiyang 550025, China
| | - Yonggui Robin Chi
- Division of Chemistry & Biological Chemistry, School of Physical & Mathematical Sciences, Nanyang Technological University, Singapore 637371, Singapore
- Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Guizhou University, Huaxi District, Guiyang 550025, China
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35
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Park J, Ahn H, Cho H, Xuan Z, Kim JH. Asymmetric Synthesis of N‐Fused 1,3‐Oxazolidines via Pd‐Catalyzed Decarboxylative (3+2) Cycloaddition. Adv Synth Catal 2020. [DOI: 10.1002/adsc.201901497] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Jong‐Un Park
- Department of Chemistry (BK21 Plus), Research Institute of Natural ScienceGyeongsang National University 52828 Jinju Korea
| | - Hye‐In Ahn
- Department of Chemistry (BK21 Plus), Research Institute of Natural ScienceGyeongsang National University 52828 Jinju Korea
| | - Ho‐Jun Cho
- Department of Chemistry (BK21 Plus), Research Institute of Natural ScienceGyeongsang National University 52828 Jinju Korea
| | - Zi Xuan
- Department of Chemistry (BK21 Plus), Research Institute of Natural ScienceGyeongsang National University 52828 Jinju Korea
| | - Ju Hyun Kim
- Department of Chemistry (BK21 Plus), Research Institute of Natural ScienceGyeongsang National University 52828 Jinju Korea
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36
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Mou C, Zhou L, Song R, Chai H, Hao L, Chi YR. Carbene-Catalyzed Reaction of Indolyl Methylenemalononitriles and Enals for Access to Complex Tetrahydrocarbazoles. Org Lett 2020; 22:2542-2547. [DOI: 10.1021/acs.orglett.0c00418] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Affiliation(s)
- Chengli Mou
- Guizhou University of Traditional Chinese Medicine, Guizhou, Huaxi District, Guiyang 550025, China
- Division of Chemistry & Biological Chemistry, School of Physical & Mathematical Sciences, Nanyang Technological University, Singapore, 637371, Singapore
| | - Liejin Zhou
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Institute of Physical Chemistry, Zhejiang Normal University, Jinhua 321004, China
- Division of Chemistry & Biological Chemistry, School of Physical & Mathematical Sciences, Nanyang Technological University, Singapore, 637371, Singapore
| | - Runjiang Song
- Division of Chemistry & Biological Chemistry, School of Physical & Mathematical Sciences, Nanyang Technological University, Singapore, 637371, Singapore
| | - Huifang Chai
- Guizhou University of Traditional Chinese Medicine, Guizhou, Huaxi District, Guiyang 550025, China
| | - Lin Hao
- Division of Chemistry & Biological Chemistry, School of Physical & Mathematical Sciences, Nanyang Technological University, Singapore, 637371, Singapore
| | - Yonggui Robin Chi
- Division of Chemistry & Biological Chemistry, School of Physical & Mathematical Sciences, Nanyang Technological University, Singapore, 637371, Singapore
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37
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Curti C, Battistini L, Sartori A, Zanardi F. New Developments of the Principle of Vinylogy as Applied to π-Extended Enolate-Type Donor Systems. Chem Rev 2020; 120:2448-2612. [PMID: 32040305 PMCID: PMC7993750 DOI: 10.1021/acs.chemrev.9b00481] [Citation(s) in RCA: 102] [Impact Index Per Article: 25.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2019] [Indexed: 12/19/2022]
Abstract
The principle of vinylogy states that the electronic effects of a functional group in a molecule are possibly transmitted to a distal position through interposed conjugated multiple bonds. As an emblematic case, the nucleophilic character of a π-extended enolate-type chain system may be relayed from the legitimate α-site to the vinylogous γ, ε, ..., ω remote carbon sites along the chain, provided that suitable HOMO-raising strategies are adopted to transform the unsaturated pronucleophilic precursors into the reactive polyenolate species. On the other hand, when "unnatural" carbonyl ipso-sites are activated as nucleophiles (umpolung), vinylogation extends the nucleophilic character to "unnatural" β, δ, ... remote sites. Merging the principle of vinylogy with activation modalities and concepts such as iminium ion/enamine organocatalysis, NHC-organocatalysis, cooperative organo/metal catalysis, bifunctional organocatalysis, dicyanoalkylidene activation, and organocascade reactions represents an impressive step forward for all vinylogous transformations. This review article celebrates this evolutionary progress, by collecting, comparing, and critically describing the achievements made over the nine year period 2010-2018, in the generation of vinylogous enolate-type donor substrates and their use in chemical synthesis.
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Affiliation(s)
| | | | | | - Franca Zanardi
- Dipartimento di Scienze degli
Alimenti e del Farmaco, Università
di Parma, Parco Area delle Scienze 27A, 43124 Parma, Italy
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38
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Zhang YC, Geng RL, Song J, Gong LZ. Isothiourea and Brønsted Acid Cooperative Catalysis: Enantioselective Construction of Dihydropyridinones. Org Lett 2020; 22:2261-2265. [DOI: 10.1021/acs.orglett.0c00461] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Yu-Chen Zhang
- Hefei National Laboratory for Physical Sciences at the Microscale and Department of Chemistry, University of Science and Technology of China, Hefei 230026, China
| | - Rui-Long Geng
- Hefei National Laboratory for Physical Sciences at the Microscale and Department of Chemistry, University of Science and Technology of China, Hefei 230026, China
| | - Jin Song
- Hefei National Laboratory for Physical Sciences at the Microscale and Department of Chemistry, University of Science and Technology of China, Hefei 230026, China
| | - Liu-Zhu Gong
- Hefei National Laboratory for Physical Sciences at the Microscale and Department of Chemistry, University of Science and Technology of China, Hefei 230026, China
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39
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Shi G, Khan R, Zhang X, Yang Y, Zhan Y, Li J, Luo Y, Fan B. Rhodium‐Catalyzed Direct
ortho
C−H Thiolation of Cyclic
N
‐Sulfonyl Ketimines. ASIAN J ORG CHEM 2020. [DOI: 10.1002/ajoc.202000017] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Guangrui Shi
- Key Laboratory of Chemistry in Ethnic Medicinal ResourcesYunnan Minzu University Kunming 650500 China
| | - Ruhima Khan
- Key Laboratory of Chemistry in Ethnic Medicinal ResourcesYunnan Minzu University Kunming 650500 China
| | - Xuexin Zhang
- Key Laboratory of Chemistry in Ethnic Medicinal ResourcesYunnan Minzu University Kunming 650500 China
| | - Yong Yang
- Chongqing Academy of Chinese Materia Medica Chongqing 400065 China
| | - Yong Zhan
- Chongqing Academy of Chinese Materia Medica Chongqing 400065 China
| | - Juan Li
- Chongqing Academy of Chinese Materia Medica Chongqing 400065 China
| | - Yang Luo
- Chongqing Academy of Chinese Materia Medica Chongqing 400065 China
| | - Baomin Fan
- Key Laboratory of Chemistry in Ethnic Medicinal ResourcesYunnan Minzu University Kunming 650500 China
- School of Chemistry and EnvironmentYunnan Minzu University Kunming 650500 China
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40
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Cao ZH, Wang YH, Kalita SJ, Schneider U, Huang YY. Phosphine-Catalyzed [4+1] Cycloadditions of Allenes with Methyl Ketimines, Enamines, and a Primary Amine. Angew Chem Int Ed Engl 2020; 59:1884-1890. [PMID: 31747102 DOI: 10.1002/anie.201912263] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2019] [Revised: 11/06/2019] [Indexed: 12/12/2022]
Abstract
Unprecedented phosphine-catalyzed [4+1] cycloadditions of allenyl imides have been discovered using various N-based substrates including methyl ketimines, enamines, and a primary amine. These transformations provide a one-pot access to cyclopentenoyl enamines and imines, or (chiral) γ-lactams through two geminal C-C bond or two C-N bond formations, respectively. Several P-based key intermediates including a 1,4-(bis)electrophilic α,β-unsaturated ketenyl phosphonium species have been detected by 31 P NMR and HRMS analyses, which shed light on the postulated catalytic cycle. The synthetic utility of this new chemistry has been demonstrated through a gram-scaling up of the catalytic reaction as well as regioselective hydrogenation and double condensation to form cyclopentanoyl enamines and fused pyrazole building blocks, respectively.
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Affiliation(s)
- Ze-Hun Cao
- Department of Chemistry, School of Chemistry, Chemical Engineering and Life Science, Wuhan University of Technology, Wuhan, 430070, China
| | - Yu-Hao Wang
- Department of Chemistry, School of Chemistry, Chemical Engineering and Life Science, Wuhan University of Technology, Wuhan, 430070, China
| | - Subarna Jyoti Kalita
- Department of Chemistry, School of Chemistry, Chemical Engineering and Life Science, Wuhan University of Technology, Wuhan, 430070, China
| | - Uwe Schneider
- EaStCHEM School of Chemistry, The University of Edinburgh, The King's Buildings, David Brewster Road, Edinburgh, EH9 3FJ, UK
| | - Yi-Yong Huang
- Department of Chemistry, School of Chemistry, Chemical Engineering and Life Science, Wuhan University of Technology, Wuhan, 430070, China
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41
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Cao Z, Wang Y, Kalita SJ, Schneider U, Huang Y. Phosphine‐Catalyzed [4+1] Cycloadditions of Allenes with Methyl Ketimines, Enamines, and a Primary Amine. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.201912263] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Ze‐Hun Cao
- Department of ChemistrySchool of Chemistry, Chemical Engineering and Life ScienceWuhan University of Technology Wuhan 430070 China
| | - Yu‐Hao Wang
- Department of ChemistrySchool of Chemistry, Chemical Engineering and Life ScienceWuhan University of Technology Wuhan 430070 China
| | - Subarna Jyoti Kalita
- Department of ChemistrySchool of Chemistry, Chemical Engineering and Life ScienceWuhan University of Technology Wuhan 430070 China
| | - Uwe Schneider
- EaStCHEM School of ChemistryThe University of EdinburghThe King's Buildings David Brewster Road Edinburgh EH9 3FJ UK
| | - Yi‐Yong Huang
- Department of ChemistrySchool of Chemistry, Chemical Engineering and Life ScienceWuhan University of Technology Wuhan 430070 China
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42
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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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43
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Xia ZH, Dai L, Gao ZH, Ye S. N-Heterocyclic carbene/photo-cocatalyzed oxidative Smiles rearrangement: synthesis of aryl salicylates from O-aryl salicylaldehydes. Chem Commun (Camb) 2020; 56:1525-1528. [PMID: 31922178 DOI: 10.1039/c9cc09272b] [Citation(s) in RCA: 48] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
The N-heterocyclic carbene/photo-cocatalyzed oxidative Smiles rearrangement of O-aryl salicylaldehydes was developed. Both electron-deficient and electron-rich aryls worked well as migrating groups, giving the corresponding aryl salicylates in good yields. This reaction features formation of two new C-O bonds and one C-O bond cleavage via metal-free oxidation of the Breslow intermediate using oxygen as the terminal oxidant and following the Smiles rearrangement under photocatalysis.
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Affiliation(s)
- Zi-Hao 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.
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44
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Luo G, Huang Z, Zhuo S, Mou C, Wu J, Jin Z, Chi YR. Access to Cyclic β‐Amino Acids by Amine‐Catalyzed Enantioselective Addition of the γ‐Carbon Atoms of α,β‐Unsaturated Imines to Enals. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201908896] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Guoyong Luo
- School of PharmacyGuizhou University of Traditional Chinese Medicine Huaxi District Guiyang 550025 China
- Division of Chemistry and Biological ChemistrySchool of Physical and Mathematical SciencesNanyang Technological University Singapore 637371 Singapore
| | - Zhijian Huang
- Division of Chemistry and Biological ChemistrySchool of Physical and Mathematical SciencesNanyang Technological University Singapore 637371 Singapore
| | - Shitian Zhuo
- Division of Chemistry and Biological ChemistrySchool of Physical and Mathematical SciencesNanyang Technological University Singapore 637371 Singapore
| | - Chengli Mou
- School of PharmacyGuizhou University of Traditional Chinese Medicine Huaxi District Guiyang 550025 China
- Division of Chemistry and Biological ChemistrySchool of Physical and Mathematical SciencesNanyang Technological University Singapore 637371 Singapore
| | - Jian Wu
- Laboratory Breeding Base of Green Pesticide and Agricultural BioengineeringKey Laboratory of Green Pesticide and Agricultural BioengineeringMinistry of Education, Guizhou University Huaxi District Guiyang 550025 China
| | - Zhichao Jin
- Laboratory Breeding Base of Green Pesticide and Agricultural BioengineeringKey Laboratory of Green Pesticide and Agricultural BioengineeringMinistry of Education, Guizhou University Huaxi District Guiyang 550025 China
| | - Yonggui Robin Chi
- Division of Chemistry and Biological ChemistrySchool of Physical and Mathematical SciencesNanyang Technological University Singapore 637371 Singapore
- Laboratory Breeding Base of Green Pesticide and Agricultural BioengineeringKey Laboratory of Green Pesticide and Agricultural BioengineeringMinistry of Education, Guizhou University Huaxi District Guiyang 550025 China
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45
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Luo G, Huang Z, Zhuo S, Mou C, Wu J, Jin Z, Chi YR. Access to Cyclic β‐Amino Acids by Amine‐Catalyzed Enantioselective Addition of the γ‐Carbon Atoms of α,β‐Unsaturated Imines to Enals. Angew Chem Int Ed Engl 2019; 58:17189-17193. [DOI: 10.1002/anie.201908896] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2019] [Revised: 09/08/2019] [Indexed: 12/17/2022]
Affiliation(s)
- Guoyong Luo
- School of PharmacyGuizhou University of Traditional Chinese Medicine Huaxi District Guiyang 550025 China
- Division of Chemistry and Biological ChemistrySchool of Physical and Mathematical SciencesNanyang Technological University Singapore 637371 Singapore
| | - Zhijian Huang
- Division of Chemistry and Biological ChemistrySchool of Physical and Mathematical SciencesNanyang Technological University Singapore 637371 Singapore
| | - Shitian Zhuo
- Division of Chemistry and Biological ChemistrySchool of Physical and Mathematical SciencesNanyang Technological University Singapore 637371 Singapore
| | - Chengli Mou
- School of PharmacyGuizhou University of Traditional Chinese Medicine Huaxi District Guiyang 550025 China
- Division of Chemistry and Biological ChemistrySchool of Physical and Mathematical SciencesNanyang Technological University Singapore 637371 Singapore
| | - Jian Wu
- Laboratory Breeding Base of Green Pesticide and Agricultural BioengineeringKey Laboratory of Green Pesticide and Agricultural BioengineeringMinistry of Education, Guizhou University Huaxi District Guiyang 550025 China
| | - Zhichao Jin
- Laboratory Breeding Base of Green Pesticide and Agricultural BioengineeringKey Laboratory of Green Pesticide and Agricultural BioengineeringMinistry of Education, Guizhou University Huaxi District Guiyang 550025 China
| | - Yonggui Robin Chi
- Division of Chemistry and Biological ChemistrySchool of Physical and Mathematical SciencesNanyang Technological University Singapore 637371 Singapore
- Laboratory Breeding Base of Green Pesticide and Agricultural BioengineeringKey Laboratory of Green Pesticide and Agricultural BioengineeringMinistry of Education, Guizhou University Huaxi District Guiyang 550025 China
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46
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Sun S, Lang M, Wang J. N‐Heterocyclic Carbene‐Catalyzed
β
‐Indolylation of
α
‐Bromoenals with Indoles. Adv Synth Catal 2019. [DOI: 10.1002/adsc.201900699] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Affiliation(s)
- Shaofa Sun
- College of Chemistry and Biological SciencesHubei University of Science and Technology Hubei 437100 People's Republic of China
| | - Ming Lang
- School of Pharmaceutical SciencesTsinghua University Beijing 100084 People's Republic of China
| | - Jian Wang
- School of Pharmaceutical SciencesTsinghua University Beijing 100084 People's Republic of China
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47
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Yang X, Luo G, Zhou L, Liu B, Zhang X, Gao H, Jin Z, Chi YR. Enantioselective Indole N–H Functionalization Enabled by Addition of Carbene Catalyst to Indole Aldehyde at Remote Site. ACS Catal 2019. [DOI: 10.1021/acscatal.9b03163] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Xing Yang
- Division of Chemistry & Biological Chemistry, School of Physical & Mathematical Science, Nanyang Technological University, Singapore 637371, Singapore
| | - Guoyong Luo
- School of Pharmacy, Guizhou University of Traditional Chinese Medicine, Guiyang 550025, China
| | - Liejin Zhou
- Division of Chemistry & Biological Chemistry, School of Physical & Mathematical Science, Nanyang Technological University, Singapore 637371, Singapore
| | - Bin Liu
- Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Guizhou University Huaxi District, Guiyang 550025, China
| | - Xiaolei Zhang
- Division of Chemistry & Biological Chemistry, School of Physical & Mathematical Science, Nanyang Technological University, Singapore 637371, Singapore
| | - Hui Gao
- 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
| | - Zhichao Jin
- Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Guizhou University Huaxi District, Guiyang 550025, China
| | - Yonggui Robin Chi
- Division of Chemistry & Biological Chemistry, School of Physical & Mathematical Science, Nanyang Technological University, Singapore 637371, Singapore
- Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Guizhou University Huaxi District, Guiyang 550025, China
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48
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Anwar M, Yang S, Xu W, Liu J, Perveen S, Kong X, Zehra ST, Fang X. Carbene-catalyzed asymmetric Friedel–Crafts alkylation-annulation sequence and rapid synthesis of indole-fused polycyclic alkaloids. Commun Chem 2019. [DOI: 10.1038/s42004-019-0188-2] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
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49
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Zheng P, Li C, Mou C, Pan D, Wu S, Xue W, Jin Z, Chi YR. Efficient Access to 2‐Pyrones via Carbene‐Catalyzed Oxidative [3+3] Reactions between Enals and Nitrogen Ylides. ASIAN J ORG CHEM 2019. [DOI: 10.1002/ajoc.201900153] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Pengcheng Zheng
- State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering Key Laboratory of Green Pesticide and Agricultural Bioengineering Ministry of EducationGuizhou University Huaxi District Guiyang 550025
| | - Chengcheng Li
- State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering Key Laboratory of Green Pesticide and Agricultural Bioengineering Ministry of EducationGuizhou University Huaxi District Guiyang 550025
| | - Chengli Mou
- Guizhou University of Traditional Chinese Medicine Guizhou China
| | - Dingwu Pan
- State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering Key Laboratory of Green Pesticide and Agricultural Bioengineering Ministry of EducationGuizhou University Huaxi District Guiyang 550025
| | - Shuquan Wu
- State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering Key Laboratory of Green Pesticide and Agricultural Bioengineering Ministry of EducationGuizhou University Huaxi District Guiyang 550025
| | - Wei Xue
- State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering Key Laboratory of Green Pesticide and Agricultural Bioengineering Ministry of EducationGuizhou University Huaxi District Guiyang 550025
| | - Zhichao Jin
- State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering Key Laboratory of Green Pesticide and Agricultural Bioengineering Ministry of EducationGuizhou University Huaxi District Guiyang 550025
| | - Yonggui Robin Chi
- State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering Key Laboratory of Green Pesticide and Agricultural Bioengineering Ministry of EducationGuizhou University Huaxi District Guiyang 550025
- Division of Chemistry & Biological Chemistry School of Physical & Mathematical SciencesNanyang Technological University Singapore 637371 Singapore
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50
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Haghdadi M, Abaszadeh A, Falahati Z. DFT study on the regio- and stereoselectivity of the organocatalytic aza-Diels-Alder reaction of crotonaldehyde and cyclic 1-aza-1,3-butadiene. Struct Chem 2019. [DOI: 10.1007/s11224-019-01323-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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