1
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Liu B, Zhou X, Liu Q, Yang Z, Mao Y, He Q, Zhang T, Kong X, Zhang J, Liao W, Tang L. Carbene-Catalyzed [4+2] Cycloaddition of Cyclobutenones and Isatins for Quick Access to Chiral Chlorine-Containing Spirocyclic δ-Lactones. J Org Chem 2024; 89:7286-7294. [PMID: 38696309 DOI: 10.1021/acs.joc.4c00295] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/04/2024]
Abstract
Here we report a carbene-catalyzed enantio- and diastereoselective [4+2] cycloaddition reaction of cyclobutenones with isatins for the quick and efficient synthesis of spirocyclic δ-lactones bearing a chiral chlorine. A broad range of substrates with various substitution patterns proceed smoothly in this reaction, with the spirooxindole δ-lactone products afforded in generally good to excellent yields and optical purities under mild reaction conditions.
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Affiliation(s)
- Bin Liu
- Guizhou Provincial Engineering Technology Research Center for Chemical Drug R&D, School of Pharmacy, Guizhou Medical University, Guiyang 550004, China
| | - Xian Zhou
- Guizhou Provincial Engineering Technology Research Center for Chemical Drug R&D, School of Pharmacy, Guizhou Medical University, Guiyang 550004, China
| | - Qinqin Liu
- Guizhou Provincial Engineering Technology Research Center for Chemical Drug R&D, School of Pharmacy, Guizhou Medical University, Guiyang 550004, China
| | - Zaihui Yang
- Guizhou Provincial Engineering Technology Research Center for Chemical Drug R&D, School of Pharmacy, Guizhou Medical University, Guiyang 550004, China
| | - Yuanhu Mao
- Guizhou Provincial Engineering Technology Research Center for Chemical Drug R&D, School of Pharmacy, Guizhou Medical University, Guiyang 550004, China
| | - Qing He
- Guizhou Provincial Engineering Technology Research Center for Chemical Drug R&D, School of Pharmacy, Guizhou Medical University, Guiyang 550004, China
| | - Tianyuan Zhang
- Guizhou Provincial Engineering Technology Research Center for Chemical Drug R&D, School of Pharmacy, Guizhou Medical University, Guiyang 550004, China
| | - Xiangkai Kong
- Guizhou Provincial Engineering Technology Research Center for Chemical Drug R&D, School of Pharmacy, Guizhou Medical University, Guiyang 550004, China
| | - Jiquan Zhang
- Guizhou Provincial Engineering Technology Research Center for Chemical Drug R&D, School of Pharmacy, Guizhou Medical University, Guiyang 550004, China
| | - Weike Liao
- Guizhou Provincial Engineering Technology Research Center for Chemical Drug R&D, School of Pharmacy, Guizhou Medical University, Guiyang 550004, China
| | - Lei Tang
- Guizhou Provincial Engineering Technology Research Center for Chemical Drug R&D, School of Pharmacy, Guizhou Medical University, Guiyang 550004, China
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2
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Wei C, Zhao C, Li J, Li C, Song B, Song R. Innovative Arylimidazole-Fused Phytovirucides via Carbene-Catalyzed [3+4] Cycloaddition: Locking Viral Cell-To-Cell Movement by Out-Competing Virus Capsid-Host Interactions. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2024; 11:e2309343. [PMID: 38477505 PMCID: PMC11109656 DOI: 10.1002/advs.202309343] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/01/2023] [Revised: 02/22/2024] [Indexed: 03/14/2024]
Abstract
The control of potato virus Y (PVY) induced crop failure is a challengeable issue in agricultural chemistry. Although many anti-PVY agents are designed to focus on the functionally important coat protein (CP) of virus, how these drugs act on CP to inactivate viral pathogenicity, remains largely unknown. Herein, a PVY CP inhibitor -3j (S) is disclosed, which is accessed by developing unusually efficient (up to 99% yield) and chemo-selective (> 99:1 er in most cases) carbene-catalyzed [3+4] cycloaddition reactions. Compound -3j bears a unique arylimidazole-fused diazepine skeleton and shows chirality-preferred performance against PVY. In addition, -3j (S) as a mediator allows ARG191 (R191) of CP to be identified as a key amino acid site responsible for intercellular movement of virions. R191 is further demonstrated to be critical for the interaction between PVY CP and the plant functional protein NtCPIP, enabling virions to cross plasmodesmata. This key step can be significantly inhibited through bonding with the -3j (S) to further impair pathogenic behaviors involving systemic infection and particle assembly. The study reveals the in-depth mechanism of action of antiviral agents targeting PVY CP, and contributes to new drug structures and synthetic strategies for PVY management.
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Affiliation(s)
- Chunle Wei
- National Key Laboratory of Green PesticideKey Laboratory of Green Pesticide and Agricultural BioengineeringMinistry of EducationCenter for R&D of Fine Chemicals of Guizhou UniversityGuiyang550025China
| | - Chunni Zhao
- National Key Laboratory of Green PesticideKey Laboratory of Green Pesticide and Agricultural BioengineeringMinistry of EducationCenter for R&D of Fine Chemicals of Guizhou UniversityGuiyang550025China
| | - Jiao Li
- National Key Laboratory of Green PesticideKey Laboratory of Green Pesticide and Agricultural BioengineeringMinistry of EducationCenter for R&D of Fine Chemicals of Guizhou UniversityGuiyang550025China
| | - Chunyi Li
- National Key Laboratory of Green PesticideKey Laboratory of Green Pesticide and Agricultural BioengineeringMinistry of EducationCenter for R&D of Fine Chemicals of Guizhou UniversityGuiyang550025China
| | - Baoan Song
- National Key Laboratory of Green PesticideKey Laboratory of Green Pesticide and Agricultural BioengineeringMinistry of EducationCenter for R&D of Fine Chemicals of Guizhou UniversityGuiyang550025China
| | - Runjiang Song
- National Key Laboratory of Green PesticideKey Laboratory of Green Pesticide and Agricultural BioengineeringMinistry of EducationCenter for R&D of Fine Chemicals of Guizhou UniversityGuiyang550025China
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3
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Das D, Kamilya C, Ghorai P. Hydrazine Hydrate in Asymmetric Synthesis: A Bifunctional Squaramide Catalytic Approach toward Fused Pyrazolines. Org Lett 2023; 25:6993-6998. [PMID: 37728280 DOI: 10.1021/acs.orglett.3c02529] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/21/2023]
Abstract
A unified strategy has been developed to utilize hydrazine hydrate in asymmetric organic synthesis by overcoming the rapid background reaction with dienone. The H-bond donor ability of the cinchona-alkaloid-derived squaramide catalyst unlocks this previously deemed infeasibility. The dissymmetric hydrazine addition to symmetrical dienones tolerates various substitutions, resulting in the formation of optically pure fused pyrazoline derivatives under mild reaction conditions. Furthermore, the scalability of this methodology and a successful demonstration of postsynthetic transformations have been accomplished.
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Affiliation(s)
- Dipankar Das
- Department of Chemistry, Indian Institute of Science Education and Research (IISER) Bhopal, Bhopal By-pass Road, Bhauri, Bhopal 462066, India
| | - Chandan Kamilya
- Department of Chemistry, Indian Institute of Science Education and Research (IISER) Bhopal, Bhopal By-pass Road, Bhauri, Bhopal 462066, India
| | - Prasanta Ghorai
- Department of Chemistry, Indian Institute of Science Education and Research (IISER) Bhopal, Bhopal By-pass Road, Bhauri, Bhopal 462066, India
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4
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Zhao J, Wu M, Luo J, Shi L, Li H. N-Heterocyclic carbene-catalyzed enantioselective annulation of 2-amino-1 H-indoles and bromoenals for the synthesis of chiral 2-aryl-2,3-dihydropyrimido[1,2- a]indol-4 (1 H)-ones. Org Biomol Chem 2023; 21:6675-6680. [PMID: 37540068 DOI: 10.1039/d3ob01006f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/05/2023]
Abstract
An efficient N-heterocyclic carbene (NHC)-catalyzed enantioselective [3 + 3] annulation of 2-bromoenals with 2-amino-1H-indoles has been developed. A series of functionalized 2-aryl-2,3-dihydropyrimido[1,2-a]indol-4(1H)-ones were synthesized using NHCs as the catalyst in good yields with high to excellent enantioselectivities.
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Affiliation(s)
- Jianbo Zhao
- State Key Laboratory of Bioreactor Engineering, Shanghai Key Laboratory of New Drug Design, and School of Pharmacy, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China.
| | - Min Wu
- State Key Laboratory of Bioreactor Engineering, Shanghai Key Laboratory of New Drug Design, and School of Pharmacy, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China.
| | - Jiamin Luo
- State Key Laboratory of Bioreactor Engineering, Shanghai Key Laboratory of New Drug Design, and School of Pharmacy, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China.
| | - Lei Shi
- Döhler Food & Beverage Ingredients (Shanghai) Co., Ltd, 739 Shennan Road, Shanghai 201108, China
| | - Hao Li
- State Key Laboratory of Bioreactor Engineering, Shanghai Key Laboratory of New Drug Design, and School of Pharmacy, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China.
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5
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Shee S, Sarkar D, Biju AT. N-Heterocyclic Carbene-Catalyzed Aza-Michael-Mannich-Lactamization Cascade for the Enantioselective Synthesis of Pyrazoloquinolin-3-ones. Org Lett 2023; 25:220-225. [PMID: 36594720 DOI: 10.1021/acs.orglett.2c04070] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
The enantioselective synthesis of functionalized pyrazoloquinolin-3-ones via N-heterocyclic carbene-catalyzed cascade reaction of α-bromoenals with 2-aminoaryl N-tosyl hydrazones is reported. The in situ-generated α,β-unsaturated acylazoliums underwent an aza-Michael-Mannich-lactamization sequence to afford the tricyclic products bearing three contiguous stereocenters, including a sterically demanding quaternary stereocenter with high enantioselectivity. The unprotected amine-triggered aza-Michael pathway over the competing amidation pathway is noteworthy.
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Affiliation(s)
- Sayan Shee
- Department of Organic Chemistry, Indian Institute of Science, Bangalore 560012, India
| | - Deeptanu Sarkar
- 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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6
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Liu Y, Wang Y, Wu X, Chi YR. Exploring Molecular Complexity by N‐Heterocyclic Carbene Organocatalysis: New Activation and Reaction Diversity. CHEM REC 2022:e202200219. [DOI: 10.1002/tcr.202200219] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2022] [Revised: 10/12/2022] [Indexed: 11/09/2022]
Affiliation(s)
- Yonggui 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
| | - Yanyan 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 550025 China
| | - Xingxing Wu
- 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
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7
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Wilson ND, Wang Z, Gung BW. How to control the acidity of 1,2,3-triazolium ions: A density functional theory study. J Mol Graph Model 2022; 112:108133. [DOI: 10.1016/j.jmgm.2022.108133] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2021] [Revised: 01/10/2022] [Accepted: 01/11/2022] [Indexed: 11/15/2022]
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8
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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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9
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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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10
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Wang X, Luo D, Wang X, Zeng X, Wang X, Hu Y. N,N'-Disulfonylhydrazines: A novel source of sulfonyl moieties for synthesis of diaryl sulfones. Tetrahedron Lett 2021. [DOI: 10.1016/j.tetlet.2021.153540] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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11
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Li MM, Chen X, Deng Y, Lu J. Recent advances of N-heterocyclic carbenes in the applications of constructing carbo- and heterocyclic frameworks with potential biological activity. RSC Adv 2021; 11:38060-38078. [PMID: 35498096 PMCID: PMC9044055 DOI: 10.1039/d1ra06155k] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2021] [Accepted: 11/05/2021] [Indexed: 01/10/2023] Open
Abstract
In recent years, N-heterocyclic carbenes (NHCs) have established themselves as a masterful and promising type of organocatalyst for the speedy construction of medicinally and biologically significant molecules from common and accessible small molecules. In particular, various cyclic scaffolds, including carbocycles and heterocycles, have been synthesized using NHCs via cycloaddition reaction. An exhaustive review focused on the chemistry of NHCs in these cyclic molecules has yet to be reported. In this contribution, a general picture of the utilization of NHCs in constructing twelve kinds of bioactive cyclic skeletons is firstly presented. We provide a systematic and comprehensive overview from the perspective of cycloaddition reactions; moreover, the limitations, challenges, and future prospects were discussed.
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Affiliation(s)
- Mei-Mei Li
- State Key Laboratory of Southwestern Chinese Medicine Resources, School of Pharmacy, Chengdu University of Traditional Chinese Medicine Chengdu 611137 China
| | - Xiaozhen Chen
- Chengdu Institute of Biology, Chinese Academy of Sciences Chengdu 610041 China
| | - Yun Deng
- State Key Laboratory of Southwestern Chinese Medicine Resources, School of Pharmacy, Chengdu University of Traditional Chinese Medicine Chengdu 611137 China
| | - Jun Lu
- State Key Laboratory of Southwestern Chinese Medicine Resources, School of Pharmacy, Chengdu University of Traditional Chinese Medicine Chengdu 611137 China
- Institute of Integrated Bioinformedicine & Translational Science, Hong Kong Baptist University Shenzhen Research Institute and Continuing Education Shenzhen 518000 China
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12
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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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13
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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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14
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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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15
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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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16
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Mondal B, Maiti R, Yang X, Xu J, Tian W, Yan JL, Li X, Chi YR. Carbene-catalyzed enantioselective annulation of dinucleophilic hydrazones and bromoenals for access to aryl-dihydropyridazinones and related drugs. Chem Sci 2021; 12:8778-8783. [PMID: 34257877 PMCID: PMC8246082 DOI: 10.1039/d1sc01891d] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2021] [Accepted: 05/17/2021] [Indexed: 11/28/2022] Open
Abstract
4,5-Dihydropyridazinones bearing an aryl substituent at the C6-position are important motifs in drug molecules. Herein, we developed an efficient protocol to access aryl-dihydropyridazinone molecules via carbene-catalyzed asymmetric annulation between dinucleophilic arylidene hydrazones and bromoenals. Key steps in this reaction include polarity-inversion of aryl aldehyde-derived hydrazones followed by chemo-selective reaction with enal-derived α,β-unsaturated acyl azolium intermediates. The aryl-dihydropyridazinone products accessed by our protocol can be readily transformed into drugs and bioactive molecules. Polarity inversion of arylidene hydrazones to react with bromoenals via carbene organic catalysis is disclosed. The reaction enantioselectively affords 6-aryl-4,5-dihydropyridazinones and related drugs with proven commercial applications.![]()
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Affiliation(s)
- Bivas Mondal
- Division of Chemistry & Mathematical Science, School of Physical & Mathematical Sciences, Nanyang Technological University Singapore 637371 Singapore
| | - Rakesh Maiti
- 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
| | - Jun Xu
- Guizhou University of Traditional Chinese Medicine Guiyang 550025 China .,Division of Chemistry & Mathematical Science, School of Physical & Mathematical Sciences, Nanyang Technological University Singapore 637371 Singapore
| | - Weiyi Tian
- Guizhou University of Traditional Chinese Medicine Guiyang 550025 China
| | - Jia-Lei Yan
- Division of Chemistry & Mathematical Science, School of Physical & Mathematical Sciences, Nanyang Technological University Singapore 637371 Singapore
| | - Xiangyang Li
- State Key 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
- State Key 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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17
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Cao L, Li T, Chi YR, Jin Z. Carbene‐Catalyzed
N
,
N
‐Nucleophilic Activation of Thioureas for Access to Pyrimidinthione Derivatives. ASIAN J ORG CHEM 2021. [DOI: 10.1002/ajoc.202100113] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Affiliation(s)
- Liya Cao
- Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering key Laboratory of Green Pesticide and Agricultural Bioengineering Ministry of Education Guizhou University Guiyang 550025 P. R. China
- The Key Laboratory of Environmental Pollution Monitoring and Disease Control Ministry of Education School of Public Health Guizhou Medical University Guiyang 550025 P. R. China
| | - Tingting Li
- Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering key Laboratory of Green Pesticide and Agricultural Bioengineering Ministry of Education Guizhou University Guiyang 550025 P. R. 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 Guiyang 550025 P. R. 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 Guiyang 550025 P. R. China
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18
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Yang X, Xie Y, Xu J, Ren S, Mondal B, Zhou L, Tian W, Zhang X, Hao L, Jin Z, Chi YR. Carbene‐Catalyzed Activation of Remote Nitrogen Atoms of (Benz)imidazole‐Derived Aldimines for Enantioselective Synthesis of Heterocycles. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202016506] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Xing Yang
- Division of Chemistry & Mathematical Science School of Physical & Mathematical Sciences Nanyang Technological University Singapore 637371 Singapore
| | - Yongtao Xie
- Division of Chemistry & Mathematical Science School of Physical & Mathematical Sciences Nanyang Technological University Singapore 637371 Singapore
- International Joint Research Center for Molecular Science College of Chemistry and Environmental Engineering Shenzhen University Shenzhen 518060 China
| | - Jun Xu
- Division of Chemistry & Mathematical Science School of Physical & Mathematical Sciences Nanyang Technological University Singapore 637371 Singapore
- Guizhou University of Traditional Chinese Medicine Guiyang 550025 China
| | - Shichao Ren
- 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
| | - Liejin Zhou
- Division of Chemistry & Mathematical Science School of Physical & Mathematical Sciences Nanyang Technological University Singapore 637371 Singapore
| | - Weiyi Tian
- Guizhou University of Traditional Chinese Medicine Guiyang 550025 China
| | - Xinglong Zhang
- Institute of High Performance Computing A*STAR (Agency for Science, Technology and Research) Singapore 138632 Singapore
| | - Lin Hao
- Division of Chemistry & Mathematical Science 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
| | - Yonggui Robin Chi
- Division of Chemistry & Mathematical Science 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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19
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Song R, Jin Z, Chi YR. NHC-catalyzed covalent activation of heteroatoms for enantioselective reactions. Chem Sci 2021; 12:5037-5043. [PMID: 34163747 PMCID: PMC8179554 DOI: 10.1039/d1sc00469g] [Citation(s) in RCA: 32] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2021] [Accepted: 02/16/2021] [Indexed: 01/01/2023] Open
Abstract
Covalent activation of heteroatoms enabled by N-heterocyclic carbene (NHC) organic catalysts for enantioselective reactions is evaluated and summarized in this review. To date, sulfur, oxygen, and nitrogen atoms can be activated in this manner to react with another substrate to construct chiral carbon-heteroatom bonds with high optical enantioselectivities. The activation starts with addition of an NHC catalyst to the carbonyl moiety (aldehyde or imine) of substrates that contain heteroatoms. The key in this approach is the formation of intermediates covalently bound to the NHC catalyst, in which the heteroatom of the substrate is activated as a nucleophilic reactive site.
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Affiliation(s)
- Runjiang Song
- 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, 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, 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
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20
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Wang Z, Liu Q, Wang K, Liu M, Han Y, Sun A, Ma X. NHC‐Catalyzed Oxidative Annulation of α,β‐unsaturated Aldehydes with Benzyl Ketones: Direct Access to 4,5,6‐Trisubstituted Dihydropyranones. ASIAN J ORG CHEM 2021. [DOI: 10.1002/ajoc.202100090] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Zhan‐Yong Wang
- School of Pharmacy Xinxiang University Xinxiang Henan 453003 P. R. China
| | - Qingling Liu
- School of Pharmacy Xinxiang University Xinxiang Henan 453003 P. R. China
| | - Kai‐Kai Wang
- School of Pharmacy Xinxiang University Xinxiang Henan 453003 P. R. China
| | - Menghan Liu
- School of Pharmacy Xinxiang University Xinxiang Henan 453003 P. R. China
| | - Yafei Han
- School of Pharmacy Xinxiang University Xinxiang Henan 453003 P. R. China
| | - Aili Sun
- School of Pharmacy Xinxiang University Xinxiang Henan 453003 P. R. China
| | - Xueji Ma
- School of Pharmacy Xinxiang University Xinxiang Henan 453003 P. R. China
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21
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Yang X, Xie Y, Xu J, Ren S, Mondal B, Zhou L, Tian W, Zhang X, Hao L, Jin Z, Chi YR. Carbene‐Catalyzed Activation of Remote Nitrogen Atoms of (Benz)imidazole‐Derived Aldimines for Enantioselective Synthesis of Heterocycles. Angew Chem Int Ed Engl 2021; 60:7906-7912. [DOI: 10.1002/anie.202016506] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2020] [Indexed: 12/22/2022]
Affiliation(s)
- Xing Yang
- Division of Chemistry & Mathematical Science School of Physical & Mathematical Sciences Nanyang Technological University Singapore 637371 Singapore
| | - Yongtao Xie
- Division of Chemistry & Mathematical Science School of Physical & Mathematical Sciences Nanyang Technological University Singapore 637371 Singapore
- International Joint Research Center for Molecular Science College of Chemistry and Environmental Engineering Shenzhen University Shenzhen 518060 China
| | - Jun Xu
- Division of Chemistry & Mathematical Science School of Physical & Mathematical Sciences Nanyang Technological University Singapore 637371 Singapore
- Guizhou University of Traditional Chinese Medicine Guiyang 550025 China
| | - Shichao Ren
- 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
| | - Liejin Zhou
- Division of Chemistry & Mathematical Science School of Physical & Mathematical Sciences Nanyang Technological University Singapore 637371 Singapore
| | - Weiyi Tian
- Guizhou University of Traditional Chinese Medicine Guiyang 550025 China
| | - Xinglong Zhang
- Institute of High Performance Computing A*STAR (Agency for Science, Technology and Research) Singapore 138632 Singapore
| | - Lin Hao
- Division of Chemistry & Mathematical Science 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
| | - Yonggui Robin Chi
- Division of Chemistry & Mathematical Science 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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22
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Maiti R, Xu J, Yan JL, Mondal B, Yang X, Chai H, Hao L, Jin Z, Chi YR. Carbene-catalyzed selective addition of isothioureas to enals for access to sulphur-containing 5,6-dihyropyrimidin-4-ones. Org Chem Front 2021. [DOI: 10.1039/d0qo01380c] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
A carbene-catalyzed highly regioselective and enantioselective 1,4-addition reaction between isothioureas and enals has been achieved under oxidative conditions.
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Affiliation(s)
- Rakesh Maiti
- Division of Chemistry & Biological Chemistry
- School of Physical & Mathematical Science
- Nanyang Technological University
- Singapore 637371
- Singapore
| | - Jun Xu
- Division of Chemistry & Biological Chemistry
- School of Physical & Mathematical Science
- Nanyang Technological University
- Singapore 637371
- Singapore
| | - Jia-Lei Yan
- Division of Chemistry & Biological Chemistry
- School of Physical & Mathematical Science
- Nanyang Technological University
- Singapore 637371
- Singapore
| | - Bivas Mondal
- Division of Chemistry & Biological Chemistry
- School of Physical & Mathematical Science
- Nanyang Technological University
- Singapore 637371
- Singapore
| | - Xing Yang
- Division of Chemistry & Biological Chemistry
- School of Physical & Mathematical Science
- Nanyang Technological University
- Singapore 637371
- Singapore
| | - Huifang Chai
- Guizhou University of Traditional Chinese Medicine
- Guiyang 550025
- China
| | - Lin Hao
- Division of Chemistry & Biological Chemistry
- School of Physical & Mathematical Science
- Nanyang Technological University
- Singapore 637371
- Singapore
| | - Zhichao Jin
- Key Laboratory of Green Pesticide and Agriculture Bioengineering
- Ministry of Education
- Guizhou University
- Guiyang 550025
- China
| | - Yonggui Robin Chi
- Division of Chemistry & Biological Chemistry
- School of Physical & Mathematical Science
- Nanyang Technological University
- Singapore 637371
- Singapore
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23
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Fu X, Hao Y, Bai HY, Duan A, Zhang SY. Co-Catalyzed Direct Regio- and Enantioselective Intermolecular γ-Amination of N-Acylpyrazoles. Org Lett 2020; 23:25-30. [DOI: 10.1021/acs.orglett.0c03522] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Xin Fu
- Key Laboratory for Thin Film and Microfabrication Technology of Ministry of Education, School of Chemistry and Chemical Engineering, and Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs, Shanghai Jiao Tong University, Shanghai 200240, China
- College of Environmental Science & Technology, Hunan University, Changsha 410082, China
| | - Yu Hao
- Key Laboratory for Thin Film and Microfabrication Technology of Ministry of Education, School of Chemistry and Chemical Engineering, and Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs, Shanghai Jiao Tong University, Shanghai 200240, China
| | - He-Yuan Bai
- Key Laboratory for Thin Film and Microfabrication Technology of Ministry of Education, School of Chemistry and Chemical Engineering, and Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Abing Duan
- College of Environmental Science & Technology, Hunan University, Changsha 410082, China
| | - Shu-Yu Zhang
- Key Laboratory for Thin Film and Microfabrication Technology of Ministry of Education, School of Chemistry and Chemical Engineering, and Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs, Shanghai Jiao Tong University, Shanghai 200240, China
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24
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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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25
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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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26
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Luo D, Min L, Zheng W, Shan L, Wang X, Hu Y. Introduction of N,N'-disulfonylhydrazines as new sulfonylating reagents for highly efficient synthesis of (E)-β-iodovinyl arenesulfones under mild conditions. CHINESE CHEM LETT 2020. [DOI: 10.1016/j.cclet.2019.12.040] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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27
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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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28
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N,N′-Disulfonylhydrazines: New sulfonylating reagents for highly efficient synthesis of (E)-vinyl sulfones at room temperature. Tetrahedron 2020. [DOI: 10.1016/j.tet.2020.131019] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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29
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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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30
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Wang C, Li Z, Zhang J, Hui XP. Asymmetric N-alkylation of indoles with isatins catalyzed by N-heterocyclic carbene: efficient synthesis of functionalized cyclic N,O-aminal indole derivatives. Org Chem Front 2020. [DOI: 10.1039/d0qo00237b] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Enantioselective N-alkylation of indole-2-formaldehydes with isatins catalyzed by NHCs is described for efficient synthesis of functionalized cyclic N,O-aminal indole derivatives.
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Affiliation(s)
- Chengyuan Wang
- State Key Laboratory of Applied Organic Chemistry
- College of Chemistry and Chemical Engineering
- Lanzhou University
- Lanzhou 730000
- P. R. China
| | - Zhuopeng Li
- State Key Laboratory of Applied Organic Chemistry
- College of Chemistry and Chemical Engineering
- Lanzhou University
- Lanzhou 730000
- P. R. China
| | - Jiong Zhang
- 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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31
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Wang ZY, Yang T, Wang KK, Chen R, Liu M, Liu H. Oxidative N-heterocyclic carbene-catalyzed [3 + 3] annulation reaction of enals with benzofuran-3-ones: efficient access to benzofuran-fused δ-lactones. Org Chem Front 2020. [DOI: 10.1039/d0qo00161a] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A facile route to benzofuran-fused δ-lactones was developed via an N-heterocyclic carbene-catalyzed [3 + 3] annulation reaction, giving the expected products in high yields (up to 99%) with excellent enantioselectivities (up to 98% ee).
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Affiliation(s)
- Zhan-Yong Wang
- College of Chemistry and Chemical Engineering
- Xinxiang University
- Xinxiang 453003
- P. R. China
| | - Ting Yang
- Medical College
- Xinxiang University
- Xinxiang 453003
- P. R. China
| | - Kai-Kai Wang
- College of Chemistry and Chemical Engineering
- Xinxiang University
- Xinxiang 453003
- P. R. China
| | - Rongxiang Chen
- College of Chemistry and Chemical Engineering
- Xinxiang University
- Xinxiang 453003
- P. R. China
| | - Menghan Liu
- College of Chemistry and Chemical Engineering
- Xinxiang University
- Xinxiang 453003
- P. R. China
| | - Hongxin Liu
- College of Chemistry and Materials Engineering
- Wenzhou University
- Wenzhou
- P.R. China
- Institute of New Materials & Industrial Technology
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32
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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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33
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Ghosh A, Barik S, Biju AT. NHC-Catalyzed [3 + 3] Annulation of Thioamides and Modified Enals for the Enantioselective Synthesis of Functionalized Thiazinones. Org Lett 2019; 21:8598-8602. [PMID: 31618035 DOI: 10.1021/acs.orglett.9b03188] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
N-Heterocyclic carbene (NHC)-catalyzed [3 + 3] annulation of thioamides with modified enals allowing the enantioselective synthesis of functionalized 1,3-thiazin-4-ones is reported. The NHC generated from the chiral triazolium salt was optimal and the reaction is initiated by the thia-Michael addition to catalytically generated α,β-unsaturated acylazolium intermediates derived from 2-bromoenals, followed by intramolecular cyclization. This operationally simple procedure offers a straightforward and rapid access to target compounds in moderate to good yields and enantiomeric ratio values.
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Affiliation(s)
- Arghya Ghosh
- Department of Organic Chemistry , Indian Institute of Science , Bangalore - 560012 , India
| | - Soumen Barik
- 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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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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35
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Huang R, Chen X, Mou C, Luo G, Li Y, Li X, Xue W, Jin Z, Chi YR. Carbene-Catalyzed α-Carbon Amination of Chloroaldehydes for Enantioselective Access to Dihydroquinoxaline Derivatives. Org Lett 2019; 21:4340-4344. [PMID: 31117715 DOI: 10.1021/acs.orglett.9b01520] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
An NHC-catalyzed α-carbon amination of chloroaldehydes was developed. Cyclohexadiene-1,2-diimines are used as amination reagents and four-atom synthons. Our reaction affords optically enriched dihydroquinoxalines that are core structures in natural products and synthetic bioactive molecules.
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Affiliation(s)
- Ruoyan Huang
- 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
| | - Xingkuan Chen
- Division of Chemistry & Biological Chemistry, School of Physical & Mathematical Sciences , Nanyang Technological University , Singapore 637371 , Singapore
| | - Chengli Mou
- Guizhou University of Traditional Chinese Medicine , Huaxi District , Guiyang 550025 , China
| | - Guoyong Luo
- Guizhou University of Traditional Chinese Medicine , Huaxi District , Guiyang 550025 , China
| | - Yongjia Li
- Division of Chemistry & Biological Chemistry, School of Physical & Mathematical Sciences , Nanyang Technological University , Singapore 637371 , Singapore
| | - Xiangyang 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
| | - Wei Xue
- 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
- 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
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36
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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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37
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Mondal S, Yetra SR, Mukherjee S, Biju AT. NHC-Catalyzed Generation of α,β-Unsaturated Acylazoliums for the Enantioselective Synthesis of Heterocycles and Carbocycles. Acc Chem Res 2019; 52:425-436. [PMID: 30653296 DOI: 10.1021/acs.accounts.8b00550] [Citation(s) in RCA: 225] [Impact Index Per Article: 45.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
This Account is aimed at highlighting the recent developments in the N-heterocyclic carbene (NHC)-catalyzed generation of α,β-unsaturated acylazolium intermediates and their subsequent reactivity with (bis)nucleophiles thereby shedding light on the power of this NHC-bound intermediate in organocatalysis. This key intermediate can be generated by the addition of NHCs to α,β-unsaturated aldehyde or acid derivatives. A wide variety of bisnucleophiles can add across the α,β-unsaturated acylazoliums to form various five and six-membered heterocycles and carbocycles. Moreover, suitably substituted nucleophiles can add to this intermediate and result in valuable products following cascade processes. Employing chiral NHCs in the process can result in the enantioselective synthesis of valuable compounds. In 2013, we developed a unified strategy for the enantioselective synthesis of dihydropyranones and dihydropyridinones by the NHC-catalyzed formal [3 + 3] annulation of 2-bromoenals with readily available 1,3-dicarbonyl compounds or primary vinylogous amides. This reaction takes place under mild conditions with low catalyst loading. Interestingly, employing enolizable aldehydes as the bisnucleophiles in this annulation afforded chiral 4,5-disubstituted dihydropyranones in spite of the competing benzoin/Stetter pathways. Moreover, the use of cyclic 1,3-dicarbonyl compounds such as 4-hydroxy coumarin/pyrazolone afforded the coumarin/pyrazole-fused dihydropyranones. In addition, a [3 + 2] annulation for the synthesis of spiro γ-butyrolactones was demonstrated using 3-hydroxy oxindoles as the bisnucleophile. The interception of α,β-unsaturated acylazolium intermediates with malonic ester derivatives having a γ-benzoyl group resulted in the enantioselective synthesis of functionalized cyclopentenes via a cascade process involving a Michael-intramolecular aldol-β-lactonization-decarboxylation sequence. The use of cyclic β-ketoamides as the coupling partner for catalytically generated α,β-unsaturated acylazoliums resulted in the enantioselective synthesis of spiro-glutarimide and the reaction proceeds in a Michael addition-intramolecular amidation pathway. We have recently demonstrated the enantioselective synthesis of tricyclic δ-lactones with three contiguous stereocenters by the reaction of enals with dinitrotoluene derivatives bearing electron-withdrawing groups, under oxidative conditions. This atom-economic cascade reaction proceeds in a Michael/Michael/lactonization sequence tolerating a range of functional groups. This technique was also used for the N-H functionalization of indoles for the enantioselective synthesis of pyrroloquinolines following the aza-Michael/Michael/lactonization sequence. The use of α-arylidene pyrazolinones as the bisnucleophiles for the tandem generation of dienolate/enolates combined with the NHC-catalyzed generation of α,β-unsaturated acylazoliums resulted in the enantioselective synthesis of pyrazolone-fused spirocyclohexadienones. This formal [3 + 3] annulation proceeds via the vinylogous Michael/spiroannulation/dehydrogenation sequence to afford spirocyclic compounds with an all-carbon quaternary stereocenter. It is reasonable to believe that the chemistry of α,β-unsaturated acylazoliums, catalytically generated through NHCs, will continue to flourish and will lead to amazing results. Future challenges in this area include the applications of this key intermediate in the synthesis of biologically active natural products and drugs.
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Affiliation(s)
- Santigopal Mondal
- Organic Chemistry Division, CSIR-National Chemical Laboratory, Dr. Homi Bhabha Road, Pune 411008, India
| | | | - Subrata Mukherjee
- Organic Chemistry Division, CSIR-National Chemical Laboratory, Dr. Homi Bhabha Road, Pune 411008, India
| | - Akkattu T. Biju
- Department of Organic Chemistry, Indian Institute of Science, Bangalore 560012, India
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38
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Lang M, Wang J. A carbene-catalyzed tandem isomerization/cyclisation strategy: an efficient assembly of benzoxazinones. Org Chem Front 2019. [DOI: 10.1039/c9qo00094a] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
An unprecedented example of NHC-catalyzed tandem isomerization/cyclisation is reported to synthesize benzoxazinones.
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Affiliation(s)
- Ming Lang
- School of Pharmaceutical Sciences
- Key Laboratory of Bioorganic Phosphorous Chemistry & Chemical Biology (Ministry of Education)
- Tsinghua University
- Beijing
- China
| | - Jian Wang
- School of Pharmaceutical Sciences
- Key Laboratory of Bioorganic Phosphorous Chemistry & Chemical Biology (Ministry of Education)
- Tsinghua University
- Beijing
- China
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39
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Zhu SY, Zhang Y, Chen XF, Huang J, Shi SH, Hui XP. Highly enantioselective synthesis of functionalized azepino[1,2-a]indolesviaNHC-catalyzed [3+4] annulation. Chem Commun (Camb) 2019; 55:4363-4366. [DOI: 10.1039/c9cc01444f] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
The enantioselective [3+4] annulation of 3-formylindol-2-methylmalonates with 2-bromoenals catalyzed by NHCs is described to efficiently synthesise functionalized azepino[1,2-a]indoles.
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Affiliation(s)
- Shi-Ya Zhu
- State Key Laboratory of Applied Organic Chemistry
- College of Chemistry and Chemical Engineering
- Lanzhou University
- Lanzhou 730000
- P. R. China
| | - Yuanzhen Zhang
- State Key Laboratory of Applied Organic Chemistry
- College of Chemistry and Chemical Engineering
- Lanzhou University
- Lanzhou 730000
- P. R. China
| | - Xin-Fa Chen
- State Key Laboratory of Applied Organic Chemistry
- College of Chemistry and Chemical Engineering
- Lanzhou University
- Lanzhou 730000
- P. R. China
| | - Jun Huang
- State Key Laboratory of Applied Organic Chemistry
- College of Chemistry and Chemical Engineering
- Lanzhou University
- Lanzhou 730000
- P. R. China
| | - Shi-Hui Shi
- Shaanxi Key Laboratory of Chemical Reaction Engineering, College of Chemistry and Chemical Engineering
- Yan’an University
- Yan’an 716000
- 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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40
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Chen Q, Zhu T, Majhi PK, Mou C, Chai H, Zhang J, Zhuo S, Chi YR. Carbene-catalyzed enantioselective oxidative coupling of enals and di(hetero)arylmethanes. Chem Sci 2018; 9:8711-8715. [PMID: 30595836 PMCID: PMC6263396 DOI: 10.1039/c8sc03480j] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2018] [Accepted: 09/17/2018] [Indexed: 01/26/2023] Open
Abstract
Di(hetero)arylmethane is a unique structural motif for natural and synthetic functional molecules. To date, it remains challenging to functionalize the diaryl methyl sp3 carbon-hydrogen bond directly in an enantioselective manner. This is likely due to the relatively inert nature of the carbon-hydrogen bond and the difficult enantiofacial discrimination of two sterically similar aryl substituents. Here we disclose an N-heterocyclic carbene-catalyzed direct oxidative coupling of enals and di(hetero)arylmethanes. Our method allows for highly enantioselective transformation of diaryl methanes and quick access to benzimidazole fused lactams.
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Affiliation(s)
- Qiao Chen
- Division of Chemistry & Biological Chemistry , School of Physical & Mathematical Sciences , Nanyang Technological University , Singapore 637371 , Singapore .
| | - Tingshun Zhu
- Division of Chemistry & Biological Chemistry , School of Physical & Mathematical Sciences , Nanyang Technological University , Singapore 637371 , Singapore .
| | - Pankaj Kumar Majhi
- Division of Chemistry & Biological Chemistry , School of Physical & Mathematical Sciences , Nanyang Technological University , Singapore 637371 , Singapore .
| | - Chengli Mou
- Guiyang College of Traditional Chinese Medicine , Guizhou , P. R. China
| | - Huifang Chai
- Guiyang College of Traditional Chinese Medicine , Guizhou , P. R. China
| | - Jingjie Zhang
- Guiyang College of Traditional Chinese Medicine , Guizhou , P. R. China
| | - Shitian Zhuo
- 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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41
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Wang J, Li Y, Sun J, Wang H, Jin Z, Chi YR. Carbene-Catalyzed Enantioselective Addition of Benzylic Carbon to Unsaturated Acyl Azolium for Rapid Synthesis of Pyrrolo[3,2-c]quinolines. ACS Catal 2018. [DOI: 10.1021/acscatal.8b02651] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Jilan 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 550025, China
| | - Yongjia Li
- Division of Chemistry & Biological Chemistry, School of Physical & Mathematical Sciences, Nanyang Technological University, Singapore 637371
| | - Jun Sun
- 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
| | - 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 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 & Biological Chemistry, School of Physical & Mathematical Sciences, Nanyang Technological University, Singapore 637371
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42
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Mondal S, Ghosh A, Mukherjee S, Biju AT. N-Heterocyclic Carbene-Catalyzed Enantioselective Synthesis of Spiro-glutarimides via α,β-Unsaturated Acylazoliums. Org Lett 2018; 20:4499-4503. [DOI: 10.1021/acs.orglett.8b01799] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Santigopal Mondal
- Organic Chemistry Division, CSIR-National Chemical Laboratory, Dr. Homi Bhabha Road, Pune 411008, India
- Academy of Scientific and Innovative Research (AcSIR), New Delhi 110020, India
| | - Arghya Ghosh
- Department of Organic Chemistry, Indian Institute of Science, Bangalore 560012, India
| | - Subrata Mukherjee
- Organic Chemistry Division, CSIR-National Chemical Laboratory, Dr. Homi Bhabha Road, Pune 411008, India
- 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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43
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Li X, Wang Y, Wang Y, Tang M, Qu LB, Li Z, Wei D. Insights into the N-Heterocyclic Carbene (NHC)-Catalyzed Oxidative γ-C(sp 3)-H Deprotonation of Alkylenals and Cascade [4 + 2] Cycloaddition with Alkenylisoxazoles. J Org Chem 2018; 83:8543-8555. [PMID: 29927597 DOI: 10.1021/acs.joc.8b01112] [Citation(s) in RCA: 57] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
The N-heterocyclic carbene (NHC)-catalyzed oxidative C-H deprotonations have attracted increasing attention; however, the general mechanism regarding this kind of oxidative organocatalysis remains unclear. In this paper, the competing mechanisms and origin of the stereoselectivity of the NHC-catalyzed oxidative γ-C(sp3)-H deprotonation of alkylenals and cascade [4 + 2] cycloaddition with alkenylisoxazoles were systematically investigated for the first time using density functional theory (DFT). The computed results indicate that the oxidation of the Breslow intermediate by 3,3',5,5'-tetra- tert-butyl diphenoquinone (DQ) via a hydride transfer to oxygen (HTO) pathway is the most favorable among the four competing pathways. In addition, the analyses demonstrate that oxidant DQ plays a double role, i.e., strengthening the acidity of the hydrogen of the γ-carbon of alkylenal and forming π···π interactions with conjugated C═C bonds to promote the γ-C(sp3)-H deprotonation. The NHC catalyst acts as a Lewis base, and the hydrogen-bond network between the NHC and the substrate formed in the key Michael addition step is responsible for the origin of the stereoselectivity. Further DFT calculations reveal that the nonpolar solvent can stabilize the nonpolar R isomer but destabilize the polar S isomer for the stereoselectivity-determining transition states, thus improving the stereoselectivity.
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44
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Lang M, Wang J. N-Heterocyclic Carbene-Catalyzed Enantioselective β-Amination of α-Bromoenals Enabled by a Proton-Shuttling Strategy. European J Org Chem 2018. [DOI: 10.1002/ejoc.201800648] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Ming Lang
- School of Pharmaceutical Sciences; Key Laboratory of Bioorganic Phosphorous Chemistry & Chemical Biology (Ministry of Education); Tsinghua University; 100084 Beijing China
| | - Jian Wang
- School of Pharmaceutical Sciences; Key Laboratory of Bioorganic Phosphorous Chemistry & Chemical Biology (Ministry of Education); Tsinghua University; 100084 Beijing China
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45
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Zhang ZF, Zhang CL, Song ZY, Gao ZH, Ye S. N-Heterocyclic Carbene-Catalyzed Annulation of α-Chloroaldehydes with γ-/δ-Amino-α,β-Unsaturated Ketones: Enantioselective Synthesis of Pyrrolidones and Piperidones. Chemistry 2018; 24:8302-8305. [PMID: 29624765 DOI: 10.1002/chem.201801539] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2018] [Indexed: 11/06/2022]
Abstract
The N-heterocyclic carbene-catalyzed [2+3] and [2+4] annulations of α-chloroaldehydes with γ-/δ-amino-α,β-unsaturated ketones were developed, giving the corresponding pyrrolidones and piperidones in good yields with exclusive trans-selectivities and excellent enantioselectivities.
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Affiliation(s)
- Zhao-Fei Zhang
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China.,University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Chun-Lin Zhang
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China.,University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Zhi-Yong Song
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China.,University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Zhong-Hua Gao
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, 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, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China.,University of Chinese Academy of Sciences, Beijing, 100049, China
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46
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47
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Gillard RM, Fernando JEM, Lupton DW. Enantioselective N‐Heterocyclic Carbene Catalysis via the Dienyl Acyl Azolium. Angew Chem Int Ed Engl 2018; 57:4712-4716. [DOI: 10.1002/anie.201712604] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2017] [Revised: 01/24/2018] [Indexed: 12/23/2022]
Affiliation(s)
- 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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48
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Gillard RM, Fernando JEM, Lupton DW. Enantioselective N‐Heterocyclic Carbene Catalysis via the Dienyl Acyl Azolium. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201712604] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- 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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49
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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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50
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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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