1
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Lin LC, Suresh S, Lin KW, Kavala V, Yao CF. One-Pot Knoevenagel/Imination/6π-Azaelectrocyclization Sequence for the Synthesis of Disubstituted Nicotinonitriles. J Org Chem 2023. [PMID: 37437261 DOI: 10.1021/acs.joc.3c00929] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/14/2023]
Abstract
We report on a copper-catalyzed three-component reaction for the synthesis of disubstituted nicotinonitriles using 3-bromopropenals, benzoylacetonitriles, and ammonium acetate (NH4OAc). The Knoevenagel-type condensation of 3-bromopropenals with benzoylacetonitriles gives δ-bromo-2,4-dienones that contain strategically placed functional groups that react with the ammonia generated in situ to give the corresponding azatrienes. These azatrienes can then be transformed into trisubstituted pyridines under the reaction conditions via a reaction sequence involving 6π-azaelectrocyclization and aromatization.
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Affiliation(s)
- Li-Chun Lin
- Department of Chemistry, National Taiwan Normal University, No. 88, Sec. 4, Ting-Zhou Road, Taipei 11677, Taiwan, R.O.C
| | - Sundaram Suresh
- Department of Chemistry, National Taiwan Normal University, No. 88, Sec. 4, Ting-Zhou Road, Taipei 11677, Taiwan, R.O.C
| | - Kun-Wu Lin
- Department of Chemistry, National Taiwan Normal University, No. 88, Sec. 4, Ting-Zhou Road, Taipei 11677, Taiwan, R.O.C
| | - Veerababurao Kavala
- Department of Chemistry, National Taiwan Normal University, No. 88, Sec. 4, Ting-Zhou Road, Taipei 11677, Taiwan, R.O.C
| | - Ching-Fa Yao
- Department of Chemistry, National Taiwan Normal University, No. 88, Sec. 4, Ting-Zhou Road, Taipei 11677, Taiwan, R.O.C
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2
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Gil-Ordóñez M, Maestro A, Andrés JM. Access to Spiropyrazolone-butenolides through NHC-Catalyzed [3 + 2]-Asymmetric Annulation of 3-Bromoenals and 1 H-Pyrazol-4,5-diones. J Org Chem 2023. [PMID: 37167601 DOI: 10.1021/acs.joc.3c00188] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
The stereoselective synthesis of spirocyclic pyrazolin-5-ones by N-heterocyclic carbene (NHC) organocatalysis has been less studied so far. For this reason and considering the interest of this class of compounds, here, we present the NHC-catalyzed [3 + 2]-asymmetric annulation of β-bromoenals and 1H-pyrazol-4,5-diones that achieves to produce chiral spiropyrazolone-butenolides. The synthesis is general for aryl and heteroaryl β-bromo-α,β-unsaturated aldehydes and 1,3-disubstituted pyrazolones. The spirobutenolides have been obtained in good yields (up to 88%) and enantioselectivities (up to 97:3 er). This constitutes the first described example using pyrazoldiones as the starting materials for this class of spiro compounds.
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Affiliation(s)
- Marta Gil-Ordóñez
- GIR-SintACat-Instituto Universitario CINQUIMA y Departamento de Química Orgánica, Facultad de Ciencias, Universidad de Valladolid, Paseo Belén 7, 47011 Valladolid, Spain
| | - Alicia Maestro
- GIR-SintACat-Instituto Universitario CINQUIMA y Departamento de Química Orgánica, Facultad de Ciencias, Universidad de Valladolid, Paseo Belén 7, 47011 Valladolid, Spain
| | - José M Andrés
- GIR-SintACat-Instituto Universitario CINQUIMA y Departamento de Química Orgánica, Facultad de Ciencias, Universidad de Valladolid, Paseo Belén 7, 47011 Valladolid, Spain
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3
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Qi D, Bai J, Song Z, Li B, Yang C, Guo L, Xia W. Photoinduced Synthesis of Functionalized Oxacyclic Spirooxindoles Via Ring Expansion. Org Lett 2023; 25:506-511. [PMID: 36637222 DOI: 10.1021/acs.orglett.2c04218] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
A versatile photochemical ring-expansion protocol for the synthesis of oxacyclic spirooxindoles under catalyst-free conditions is described. The reaction is enabled by the use of unstrained O-containing heterocycles with 3-diazoindolin-2-ones under visible-light irradiation. Several synthetic advantages for this method are exhibited, including mild conditions, good functional group tolerance, operational simplicity, and scalability. Mechanistic studies indicate that the transformation may proceed through the formation of oxonium ylide intermediate followed by an ionic cyclization.
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Affiliation(s)
- Dan Qi
- State Key Lab of Urban Water Resource and Environment, School of Science, Harbin Institute of Technology (Shenzhen), Shenzhen 518055, China
| | - Jinrui Bai
- State Key Lab of Urban Water Resource and Environment, School of Science, Harbin Institute of Technology (Shenzhen), Shenzhen 518055, China
| | - Zhuoheng Song
- State Key Lab of Urban Water Resource and Environment, School of Science, Harbin Institute of Technology (Shenzhen), Shenzhen 518055, China
| | - Bin Li
- State Key Lab of Urban Water Resource and Environment, School of Science, Harbin Institute of Technology (Shenzhen), Shenzhen 518055, China
| | - Chao Yang
- State Key Lab of Urban Water Resource and Environment, School of Science, Harbin Institute of Technology (Shenzhen), Shenzhen 518055, China
| | - Lin Guo
- State Key Lab of Urban Water Resource and Environment, School of Science, Harbin Institute of Technology (Shenzhen), Shenzhen 518055, China
| | - Wujiong Xia
- State Key Lab of Urban Water Resource and Environment, School of Science, Harbin Institute of Technology (Shenzhen), Shenzhen 518055, China.,School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang 453007, Henan, China
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4
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Wang T, Huang B, Wang YQ. Enantioselective Synthesis of Spiro Chroman‐Isoindolinones via Formal (4+2) Cycloaddition of In Situ‐Generated ortho‐Quinone Methides with 3‐Methylene Isoindolinones. Adv Synth Catal 2022. [DOI: 10.1002/adsc.202200350] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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5
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Sharma D, Chatterjee R, Dhayalan V, Dandela R. Recent Advances in Enantioselective Organocatalytic Reactions Enabled by NHCs Containing Triazolium Motifs. SYNTHESIS-STUTTGART 2022. [DOI: 10.1055/a-1856-5688] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
N-Heterocyclic carbenes (NHCs) containing triazolium motifs have emerged as a powerful tool in organocatalysis. Recently, various NHC pre-catalyst mediated organic transformations have been developed successfully. This article aims to compile the current state of knowledge on NHC-triazolium catalysed enantioselective name reactions and introduce newly developed catalytic methods. Furthermore, this review article framework provides an excellent opportunity to highlight some of the unique applications of these catalytic procedures in the natural product synthesis of biologically active compounds, notably the wide range of preparation of substituted chiral alcohols, and their derivatives. This article provides an overview of chiral NHC triazolium-catalyst libraries synthesis and their catalytic application in enantioselective reactions.
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Affiliation(s)
- Deepika Sharma
- Dept. of Industrial and Engineering Chemistry, Institute of Chemical Technology, Indian oil Odisha Campus, Bhubaneswar-, Bhubaneswar, India
| | - Rana Chatterjee
- Chemistry, Institute of Chemical Technology, Indian oil Odisha Campus, Bhubaneswar, Bhubaneswar, India
| | | | - Rambabu Dandela
- Dept. of Industrial and Engineering Chemistry, Institute of Chemical Technology- IOC Bhubaneswar, Bhubaneswar, India
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6
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Suresh S, Bhimrao Patil P, Yu P, Fang C, Weng Y, Kavala V, Yao C. A Study of the Reactions of 3‐Bromopropenals with Anilines for the Synthesis of α‐Bromo Enaminones. Adv Synth Catal 2021. [DOI: 10.1002/adsc.202100779] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Affiliation(s)
- Sundaram Suresh
- Department of Chemistry National Taiwan Normal University 88, Sec. 4, Ting-Zhou Road Taipei Taiwan 116, R.O.C
| | - Prakash Bhimrao Patil
- Department of Chemistry National Taiwan Normal University 88, Sec. 4, Ting-Zhou Road Taipei Taiwan 116, R.O.C
| | - Pao‐Hsing Yu
- Department of Chemistry National Taiwan Normal University 88, Sec. 4, Ting-Zhou Road Taipei Taiwan 116, R.O.C
| | - Chia‐Chi Fang
- Department of Chemistry National Taiwan Normal University 88, Sec. 4, Ting-Zhou Road Taipei Taiwan 116, R.O.C
| | - Yin‐Zhi Weng
- Department of Chemistry National Taiwan Normal University 88, Sec. 4, Ting-Zhou Road Taipei Taiwan 116, R.O.C
| | - Veerababurao Kavala
- Department of Chemistry National Taiwan Normal University 88, Sec. 4, Ting-Zhou Road Taipei Taiwan 116, R.O.C
| | - Ching‐Fa Yao
- Department of Chemistry National Taiwan Normal University 88, Sec. 4, Ting-Zhou Road Taipei Taiwan 116, R.O.C
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7
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Gao M, Luo Y, Xu Q, Zhao Y, Gong X, Xia Y, Hu L. A Unified Catalytic Asymmetric (4+1) and (5+1) Annulation Strategy to Access Chiral Spirooxindole‐Fused Oxacycles. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202105282] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Min Gao
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research School of Pharmaceutical Sciences Chongqing University Chongqing 401331 China
| | - Yanshu Luo
- College of Chemistry and Materials Engineering Wenzhou University Wenzhou 325035 China
| | - Qianlan Xu
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research School of Pharmaceutical Sciences Chongqing University Chongqing 401331 China
| | - Yukun Zhao
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research School of Pharmaceutical Sciences Chongqing University Chongqing 401331 China
| | - Xiangnan Gong
- Analytical and Testing Center Chongqing University Chongqing 401331 China
| | - Yuanzhi Xia
- College of Chemistry and Materials Engineering Wenzhou University Wenzhou 325035 China
| | - Lin Hu
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research School of Pharmaceutical Sciences Chongqing University Chongqing 401331 China
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8
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Gao M, Luo Y, Xu Q, Zhao Y, Gong X, Xia Y, Hu L. A Unified Catalytic Asymmetric (4+1) and (5+1) Annulation Strategy to Access Chiral Spirooxindole-Fused Oxacycles. Angew Chem Int Ed Engl 2021; 60:19813-19820. [PMID: 34160121 DOI: 10.1002/anie.202105282] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2021] [Revised: 06/10/2021] [Indexed: 12/11/2022]
Abstract
A unified catalytic asymmetric (N+1) (N=4, 5) annulation reaction of oxindoles with bifunctional peroxides has been achieved in the presence of a chiral phase-transfer catalyst (PTC). This general strategy utilizes peroxides as unique bielectrophilic four- or five-atom synthons to participate in the C-C and the subsequent umpolung C-O bond-forming reactions with one-carbon unit nucleophiles, thus providing a distinct method to access the valuable chiral spirooxindole-tetrahydrofurans and -tetrahydropyrans with good yields and high enantioselectivities under mild conditions. DFT calculations were performed to rationalize the origin of high enantioselectivity. The gram-scale syntheses and synthetic utility of the resultant products were also demonstrated.
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Affiliation(s)
- Min Gao
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research, School of Pharmaceutical Sciences, Chongqing University, Chongqing, 401331, China
| | - Yanshu Luo
- College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou, 325035, China
| | - Qianlan Xu
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research, School of Pharmaceutical Sciences, Chongqing University, Chongqing, 401331, China
| | - Yukun Zhao
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research, School of Pharmaceutical Sciences, Chongqing University, Chongqing, 401331, China
| | - Xiangnan Gong
- Analytical and Testing Center, Chongqing University, Chongqing, 401331, China
| | - Yuanzhi Xia
- College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou, 325035, China
| | - Lin Hu
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research, School of Pharmaceutical Sciences, Chongqing University, Chongqing, 401331, China
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9
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Xiao JA, Li JL, Cheng XL, Chen K, Peng H, Chen WQ, Su W, Huang YM, Yang H. Enantioselective formal [3+2]-cycloadditions to access spirooxindoles bearing four contiguous stereocenters through synergistic catalysis. Chem Commun (Camb) 2021; 57:4456-4459. [PMID: 33949393 DOI: 10.1039/d0cc07957j] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
An enantioselective ring-opening formal [3+2]-cycloaddition of spirovinylcyclopropyl oxindoles with enals via synergistic catalysis of palladium(0) and a chiral organocatalyst has been developed, affording spirooxindoles bearing four contiguous stereocenters in good yields with excellent enantioselectivities. The generality and utility of the protocol were also demonstrated through scale-up experiments and synthetic transformation of the resulting cycloadduct.
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Affiliation(s)
- Jun-An Xiao
- Guangxi Key Laboratory of Natural Polymer Chemistry and Physics, Nanning Normal University, Nanning 530001, P. R. China.
| | - Jin-Lian Li
- Guangxi Key Laboratory of Natural Polymer Chemistry and Physics, Nanning Normal University, Nanning 530001, P. R. China.
| | - Xiu-Liang Cheng
- Guangxi Key Laboratory of Natural Polymer Chemistry and Physics, Nanning Normal University, Nanning 530001, P. R. China.
| | - Kai Chen
- College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, P. R. China. and State Key Laboratory of Chemical Oncogenomics, Peking University Shenzhen Graduate School, Shenzhen 518055, P. R. China
| | - Hai Peng
- Guangxi Key Laboratory of Natural Polymer Chemistry and Physics, Nanning Normal University, Nanning 530001, P. R. China.
| | - Wen-Qiang Chen
- Guangxi Key Laboratory of Natural Polymer Chemistry and Physics, Nanning Normal University, Nanning 530001, P. R. China.
| | - Wei Su
- Guangxi Key Laboratory of Natural Polymer Chemistry and Physics, Nanning Normal University, Nanning 530001, P. R. China.
| | - Yan-Min Huang
- Guangxi Key Laboratory of Natural Polymer Chemistry and Physics, Nanning Normal University, Nanning 530001, P. R. China.
| | - Hua Yang
- College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, P. R. China.
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10
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Merkushev AA, Makarov AS, Shpuntov PM, Abaev VT, Trushkov IV, Uchuskin MG. Oxidative Rearrangement of 2‐(2‐Aminobenzyl)furans: Synthesis of Functionalized Indoles and Carbazoles. European J Org Chem 2021. [DOI: 10.1002/ejoc.202001608] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
| | - Anton S. Makarov
- Perm State University Bukireva St. 15 Perm 614990 Russian Federation
| | - Pavel M. Shpuntov
- Kuban State Technological University Moskovskaya St. 2 Krasnodar 350072 Russian Federation
| | - Vladimir T. Abaev
- North-Ossetian State University Vatutina St. 46 Vladikavkaz 362025 Russian Federation
- North Caucasus Federal University Pushkin St. 1a Stavropol 355009 Russian Federation
| | - Igor V. Trushkov
- D. Rogachev National Medical Research Center of Pediatric Hematology, Oncology and Immunology Samory Mashela St. 1 Moscow 117997 Russian Federation
- N.D. Zelinsky Institute of Organic Chemistry Russian Academy of Sciences Leninsky Pr. 47 Moscow 119991 Russian Federation
| | - Maxim G. Uchuskin
- Perm State University Bukireva St. 15 Perm 614990 Russian Federation
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11
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Affiliation(s)
- Jiarong Shi
- School of Chemistry and Chemical Engineering, Chongqing University, 174 Shazheng Street, Chongqing, P. R. China, 400030
| | - Lianggui Li
- School of Chemistry and Chemical Engineering, Chongqing University, 174 Shazheng Street, Chongqing, P. R. China, 400030
| | - Yang Li
- School of Chemistry and Chemical Engineering, Chongqing University, 174 Shazheng Street, Chongqing, P. R. China, 400030
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12
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Shen J, Zhang L, Meng X. Recent advances in cyclization reactions of isatins or thioisatins via C–N or C–S bond cleavage. Org Chem Front 2021. [DOI: 10.1039/d1qo00868d] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
This review summarizes recent developments on cyclization reactions induced by the C–N or C–S bond cleavage of isatins or thioisatins in the last 5 years, which produce fused products instead of spiro compounds.
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Affiliation(s)
- Jinhui Shen
- Tianjin Key Laboratory of Organic Solar Cells and Photochemical Conversion, School of Chemistry & Chemical Engineering, Tianjin University of Technology, Tianjin 300384, P. R. China
| | - Lei Zhang
- Tianjin Engineering Technology Center of Chemical Wastewater Source Reduction and Recycling, School of Science, Tianjin Chengjian University, Tianjin 300384, P.R. China
| | - Xiangtai Meng
- Tianjin Key Laboratory of Organic Solar Cells and Photochemical Conversion, School of Chemistry & Chemical Engineering, Tianjin University of Technology, Tianjin 300384, P. R. China
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13
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Abstract
This review summaries recent synthetic developments towards spirocyclic oxindoles and applications as valuable medicinal and synthetic targets.
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Affiliation(s)
- Alexander J. Boddy
- Department of Chemistry
- Imperial College London
- Molecular Sciences Research Hub
- London W12 0BZ
- UK
| | - James A. Bull
- Department of Chemistry
- Imperial College London
- Molecular Sciences Research Hub
- London W12 0BZ
- UK
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14
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Wang G, Wu J, Cheng H, Zhong C, He Z. N‐Heterocyclic Carbene Catalyzed [3+2] Annulations of β‐Halocycloenals with Isatins and Mechanism Study. European J Org Chem 2020. [DOI: 10.1002/ejoc.202001544] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Gang Wang
- School of Chemistry and Environmental Engineering Key Laboratory of Green Chemical Engineering Process of Ministry of Education Wuhan Institute of Technology LiuFang Campus Donghu New & High Technology Development Zone No.206, Guanggu 1st road Wuhan 430025 P.R. China
| | - Jiang Wu
- School of Chemistry and Environmental Engineering Key Laboratory of Green Chemical Engineering Process of Ministry of Education Wuhan Institute of Technology LiuFang Campus Donghu New & High Technology Development Zone No.206, Guanggu 1st road Wuhan 430025 P.R. China
| | - Hang Cheng
- School of Chemistry and Environmental Engineering Key Laboratory of Green Chemical Engineering Process of Ministry of Education Wuhan Institute of Technology LiuFang Campus Donghu New & High Technology Development Zone No.206, Guanggu 1st road Wuhan 430025 P.R. China
| | - Cheng Zhong
- Hubei Key Lab on Organic and Polymeric Optoelectronic Materials Department of Chemistry Wuhan University No.299, Bayi road Wuhan 430072 P. R. China
| | - Zhao‐Lin He
- School of Chemistry and Environmental Engineering Key Laboratory of Green Chemical Engineering Process of Ministry of Education Wuhan Institute of Technology LiuFang Campus Donghu New & High Technology Development Zone No.206, Guanggu 1st road Wuhan 430025 P.R. China
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15
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Jiang Z, Toffano M, Vo‐Thanh G, Bournaud C. Bifunctional N‐Heterocylic Carbene‐Catalyzed Highly Enantioselective Trans‐Cyclopentannulation of Enals and Enones via Homoenolate. ChemCatChem 2020. [DOI: 10.1002/cctc.202001513] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Zhiwei Jiang
- Institut de Chimie Moléculaire et des Matériaux d'Orsay, CNRS UMR 8182 Université Paris-Saclay Rue du doyen Georges Poitou 91405 Orsay Cedex France
| | - Martial Toffano
- Institut de Chimie Moléculaire et des Matériaux d'Orsay, CNRS UMR 8182 Université Paris-Saclay Rue du doyen Georges Poitou 91405 Orsay Cedex France
| | - Giang Vo‐Thanh
- Institut de Chimie Moléculaire et des Matériaux d'Orsay, CNRS UMR 8182 Université Paris-Saclay Rue du doyen Georges Poitou 91405 Orsay Cedex France
| | - Chloée Bournaud
- Institut de Chimie Moléculaire et des Matériaux d'Orsay, CNRS UMR 8182 Université Paris-Saclay Rue du doyen Georges Poitou 91405 Orsay Cedex France
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16
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Chen XY, Gao ZH, Ye S. Bifunctional N-Heterocyclic Carbenes Derived from l-Pyroglutamic Acid and Their Applications in Enantioselective Organocatalysis. Acc Chem Res 2020; 53:690-702. [PMID: 32142245 DOI: 10.1021/acs.accounts.9b00635] [Citation(s) in RCA: 199] [Impact Index Per Article: 49.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
In nature, enzymes are a powerful medium for the construction of enantiomerically pure chemicals, which always inspires synthetic chemists to explore new catalysts to imitate the enzyme machinery for asymmetric transformations. Vitamin B1, a bifunctional thiazolium N-heterocyclic carbene (NHC) precursor, is the coenzyme for transketolase. In the past two decades, a series of chiral NHCs, including monocyclic, bicyclic, tetracyclic, and even bridged ones, have been synthesized and successfully utilized as efficient organocatalysts for a wide variety of asymmetric organic reactions. The utility of bifunctional catalysts can enhance catalytic activity and improve stereochemical control through their synchronous activation of both reaction partners. However, the NHCs possessing multiple activation sites are far less developed.This Account gives an overview of our research on the design, development, and applications of bifunctional NHCs in organocatalysis. We synthesized a series of l-pyroglutamic acid-derived bifunctional NHCs bearing a free hydroxyl group which can interact with carbonyl or imino groups via hydrogen-bonding. Further studies revealed that these bifunctional catalysts worked well for a variety of reactions. We have developed bifunctional NHC-catalyzed aza-benzoin reactions, [2 + 2], [2 + 3], and [2 + 4] cycloadditions of ketenes, [3 + 2] and [3 + 4] annulations of enals, and aza-MBH and Rauhut-Currier reactions of Michael acceptors. In addition to these reactions via nucleophilic Breslow intermediates, enolates, homoenolates, and zwitterionic azolium intermediates, the bifunctional NHC-catalyzed [3 + 3] annulation via 1,3-biselectrophilic α,β-unsaturated acyl azolium intermediates was also developed.In these reactions, bifunctional NHCs showed amazing effects compared to normal nonbifunctional NHCs. In some cases, the bifunctional NHCs facilitated reactions which did not work under normal NHC catalysis, possibly due to additional activation via H-bonding. More interestingly, the bifunctional NHCs could not only improve but also switch the enantioselectivity to get products with opposite stereochemistry through H-bond controlled stereochemical directing. Furthermore, the reaction mode could be totally changed from [3 + 2] to [3 + 4] annulation to give kinetically favored products when bifunctional NHCs were employed. In future, the applications of bifunctional NHCs in other challenging reactions, such as asymmetric reactions with carbon-carbon unsaturated bonds, and the reactions involving alkyl or heteroatom radicals will be the major focus in our group.
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Affiliation(s)
- Xiang-Yu Chen
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Molecular Recognition and Function, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, 100190 Beijing, China
- School of Chemical Sciences, University of the Chinese Academy of Sciences, 100049 Beijing, China
| | - Zhong-Hua Gao
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Molecular Recognition and Function, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, 100190 Beijing, 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
- School of Chemical Sciences, University of the Chinese Academy of Sciences, 100049 Beijing, China
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17
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Liu D, Hu Z, Zhang Y, Gong M, Fu Z, Huang W. Access to Enantioenriched Spiro-ϵ-Lactam Oxindoles by an N-Heterocyclic Carbene-Catalyzed [4+3] Annulation of Flexible Oxotryptamines with Enals. Chemistry 2019; 25:11223-11227. [PMID: 31298766 DOI: 10.1002/chem.201903144] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2019] [Indexed: 01/06/2023]
Abstract
Oxotryptamines were firstly used as flexible four-atom synthons in an NHC-catalyzed formal [4+3] annulation, providing a novel enantioselective method to access structurally diverse spiro-ϵ-lactam oxindoles with excellent enantioselectivities. This metal-free reaction features a broad substrate scope, excellent functional-group tolerance and proceeds under mild reaction conditions. Importantly, enantiopure privileged hexahydropyrroloindoles could be easily constructed by a one-pot process from the resulting spiro-ϵ-lactam oxindoles.
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Affiliation(s)
- Dehai Liu
- Key Laboratory of Flexible Electronics & Institute of Advanced Materials, Jiangsu National Synergetic Innovation Center for Advanced Materials, Nanjing Tech University, 30 South Puzhu Road, Nanjing, 211816, P. R. China
| | - Zhouli Hu
- Key Laboratory of Flexible Electronics & Institute of Advanced Materials, Jiangsu National Synergetic Innovation Center for Advanced Materials, Nanjing Tech University, 30 South Puzhu Road, Nanjing, 211816, P. R. China
| | - Yuxia Zhang
- Key Laboratory of Flexible Electronics & Institute of Advanced Materials, Jiangsu National Synergetic Innovation Center for Advanced Materials, Nanjing Tech University, 30 South Puzhu Road, Nanjing, 211816, P. R. China
| | - Minghua Gong
- Key Laboratory of Flexible Electronics & Institute of Advanced Materials, Jiangsu National Synergetic Innovation Center for Advanced Materials, Nanjing Tech University, 30 South Puzhu Road, Nanjing, 211816, P. R. China
| | - Zhenqian Fu
- Key Laboratory of Flexible Electronics & Institute of Advanced Materials, Jiangsu National Synergetic Innovation Center for Advanced Materials, Nanjing Tech University, 30 South Puzhu Road, Nanjing, 211816, P. R. China.,Shaanxi Institute of Flexible Electronics (SIFE), Northwestern Polytechnical University (NPU), 127 West Youyi Road, Xi'an, 710072, P. R. China
| | - Wei Huang
- Key Laboratory of Flexible Electronics & Institute of Advanced Materials, Jiangsu National Synergetic Innovation Center for Advanced Materials, Nanjing Tech University, 30 South Puzhu Road, Nanjing, 211816, P. R. China.,Shaanxi Institute of Flexible Electronics (SIFE), Northwestern Polytechnical University (NPU), 127 West Youyi Road, Xi'an, 710072, P. R. China
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18
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Ren JW, Zheng L, Ye ZP, Deng ZX, Xie ZZ, Xiao JA, Zhu FW, Xiang HY, Chen XQ, Yang H. Organocatalytic, Enantioselective, Polarity-Matched Ring-Reorganization Domino Sequence Based on the 3-Oxindole Scaffold. Org Lett 2019; 21:2166-2170. [PMID: 30908056 DOI: 10.1021/acs.orglett.9b00477] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A one-pot squaramide-catalyzed enantioselective ring-reorganization domino sequence (Michael addition/intramolecular ring-opening/lactamization) of 3-hydroxyoxindole and methyleneindolinone, which can be readily derived from 3-oxindole, has been established in this work. As a result, novel polycyclic quinolinone-spirooxindoles bearing three contiguous chiral centers were efficiently and step-economically assembled under mild conditions in high yields (up to 97%) with excellent enantioselectivities (up to >99% ee) and moderate to good diastereoselectivities (up to >95:5 dr).
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Affiliation(s)
- Ji-Wei Ren
- College of Chemistry and Chemical Engineering , Central South University , Changsha , Hunan 410083 , P. R. China
| | - Lan Zheng
- College of Chemistry and Chemical Engineering , Central South University , Changsha , Hunan 410083 , P. R. China
| | - Zhi-Peng Ye
- College of Chemistry and Chemical Engineering , Central South University , Changsha , Hunan 410083 , P. R. China
| | - Zhi-Xiong Deng
- College of Chemistry and Chemical Engineering , Central South University , Changsha , Hunan 410083 , P. R. China
| | - Zhen-Zhen Xie
- College of Chemistry and Chemical Engineering , Central South University , Changsha , Hunan 410083 , P. R. China
| | - Jun-An Xiao
- College of Chemistry and Materials Science , Nanning Normal University , Nanning , Guangxi 530001 , P. R. China
| | - Fa-Wei Zhu
- College of Chemistry and Chemical Engineering , Central South University , Changsha , Hunan 410083 , P. R. China
| | - Hao-Yue Xiang
- College of Chemistry and Chemical Engineering , Central South University , Changsha , Hunan 410083 , P. R. China
| | - Xiao-Qing Chen
- College of Chemistry and Chemical Engineering , Central South University , Changsha , Hunan 410083 , P. R. China
| | - Hua Yang
- College of Chemistry and Chemical Engineering , Central South University , Changsha , Hunan 410083 , P. R. China
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19
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Li Y, Zhang Z, Liang C. Understanding the mechanism and stereoselectivity of NHC-catalyzed [3 + 2] cycloaddition of 3-bromoenals and isatin N-Boc ketimines. Org Biomol Chem 2019; 16:9251-9258. [PMID: 30483682 DOI: 10.1039/c8ob02804d] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The mechanism and origin of stereoselectivities in N-heterocyclic carbine (NHC)-catalyzed [3 + 2] cycloaddition of 3-bromoenals and isatin N-Boc ketimines have been studied using density functional theory (DFT) calculations. Various possible reaction pathways were examined and analyzed. Our calculation results reveal that the catalytic cycle can be characterized by six steps: nucleophilic attack of a catalyst on 3-bromoenal (step I); [1,2]-proton transfer (step II); addition to the other reactant isatin N-Boc ketimine (step III); debromination (step IV); intramolecular cycloaddition concerted with hydrogen-elimination (step V) and elimination of the NHC catalyst (step VI). For step II, besides the direct [1,2]-proton transfer, the mediator (base and water)-assisted proton transfer has been investigated, and the DFT results show that the 2H2O cluster-mediated proton transfer is most energy favorable. The carbon-carbon bond formation step (step III) is calculated to be the stereoselectivity-determining step and the S-configuration product is the predominant product, which are in good agreement with the experimental observations. The mechanistic insights gained in this work should be helpful for other NHC-catalyzed reactions.
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Affiliation(s)
- Yan Li
- School of Chemical Engineering, University of Science and Technology Liaoning, Anshan 114051, China.
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20
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Yang ZT, Zhao J, Yang WL, Deng WP. Enantioselective Construction of CF3-Containing Spirooxindole γ-Lactones via Organocatalytic Asymmetric Michael/Lactonization. Org Lett 2019; 21:1015-1020. [DOI: 10.1021/acs.orglett.8b04039] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Zhong-Tao Yang
- School of Pharmacy and Shanghai Key Laboratory of New Drug Design, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China
| | - Jianhong Zhao
- School of Pharmacy and Shanghai Key Laboratory of New Drug Design, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China
| | - Wu-Lin Yang
- School of Pharmacy and Shanghai Key Laboratory of New Drug Design, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China
| | - Wei-Ping Deng
- School of Pharmacy and Shanghai Key Laboratory of New Drug Design, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China
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21
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Liu M, Zhang X, Huang X, Dhawan G, Evans J, Kaur M, Jasinski JP, Zhang W. Recyclable Organocatalyst for One-Pot Asymmetric Synthesis of Dihydrofuranone and Tetrahydropyranone Spirooxindoles. European J Org Chem 2018. [DOI: 10.1002/ejoc.201801480] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Miao Liu
- Department of Chemistry; University of Massachusetts Boston; 100 Morrissey Boulevard 02125 Boston MA USA
| | - Xiaofeng Zhang
- Department of Chemistry; University of Massachusetts Boston; 100 Morrissey Boulevard 02125 Boston MA USA
| | - Xin Huang
- Department of Chemistry; University of Massachusetts Boston; 100 Morrissey Boulevard 02125 Boston MA USA
- College of Chemistry and Life Sciences; Zhejiang Normal University; 321004 Jinhua China
| | - Gagan Dhawan
- Department of Chemistry; University of Massachusetts Boston; 100 Morrissey Boulevard 02125 Boston MA USA
- Department of Biomedical Science; Acharya Narendra Dev College; University of Delhi; -110019 New Delhi India
| | - Jason Evans
- Department of Chemistry; University of Massachusetts Boston; 100 Morrissey Boulevard 02125 Boston MA USA
| | - Manpreet Kaur
- Department of Chemistry; Keene State College; 229 Main Street 03435 Keene NH USA
| | - Jerry P. Jasinski
- Department of Chemistry; Keene State College; 229 Main Street 03435 Keene NH USA
| | - Wei Zhang
- Department of Chemistry; University of Massachusetts Boston; 100 Morrissey Boulevard 02125 Boston MA USA
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22
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Teng F, Xie G, Zhang L, Ma X. Hollow Mesoporous Organic Polymeric Nanospheres (HMOPNs)-Supported Carbene Rovis Catalyst: Mesopore and Morphology-Dependent Catalytic Performances in Asymmetric Organocascade. ChemCatChem 2018. [DOI: 10.1002/cctc.201801064] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Fei Teng
- College of Chemistry and Chemical Engineering; Southwest University; Chongqing 400715 P. R. China
| | - Guangxing Xie
- College of Chemistry and Chemical Engineering; Southwest University; Chongqing 400715 P. R. China
| | - Li Zhang
- College of Chemistry and Chemical Engineering; Southwest University; Chongqing 400715 P. R. China
| | - Xuebing Ma
- College of Chemistry and Chemical Engineering; Southwest University; Chongqing 400715 P. R. China
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23
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Gao YT, Jin XY, Liu Q, Liu AD, Cheng L, Wang D, Liu L. Iodide/H₂O₂ Catalyzed Intramolecular Oxidative Amination for the Synthesis of 3,2'-Pyrrolidinyl Spirooxindoles. Molecules 2018; 23:molecules23092265. [PMID: 30189635 PMCID: PMC6225319 DOI: 10.3390/molecules23092265] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2018] [Revised: 08/21/2018] [Accepted: 08/24/2018] [Indexed: 12/13/2022] Open
Abstract
An ammonium iodide/hydrogen peroxide-mediated intramolecular oxidative amination of 3-aminoalkyl-2-oxindoles was achieved, affording the corresponding 3,2'-pyrrolidinyl spirooxindoles and their 6- or 7-membered analogous in moderate to high yields. This metal-free procedure features very mild reaction conditions, non-toxicity and easily handled hydrogen peroxide as a clean oxidant.
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Affiliation(s)
- Yu-Ting Gao
- Beijing National Laboratory for Molecular Sciences (BNLMS), CAS Key Laboratory of Molecular Recognition and Function, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China.
- University of Chinese Academy of Sciences, Beijing 100049, China.
| | - Xiao-Yang Jin
- Beijing National Laboratory for Molecular Sciences (BNLMS), CAS Key Laboratory of Molecular Recognition and Function, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China.
- University of Chinese Academy of Sciences, Beijing 100049, China.
| | - Qi Liu
- Beijing National Laboratory for Molecular Sciences (BNLMS), CAS Key Laboratory of Molecular Recognition and Function, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China.
- University of Chinese Academy of Sciences, Beijing 100049, China.
| | - An-Di Liu
- Beijing National Laboratory for Molecular Sciences (BNLMS), CAS Key Laboratory of Molecular Recognition and Function, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China.
- University of Chinese Academy of Sciences, Beijing 100049, China.
| | - Liang Cheng
- Beijing National Laboratory for Molecular Sciences (BNLMS), CAS Key Laboratory of Molecular Recognition and Function, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China.
- University of Chinese Academy of Sciences, Beijing 100049, China.
| | - Dong Wang
- Beijing National Laboratory for Molecular Sciences (BNLMS), 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.
| | - Li Liu
- Beijing National Laboratory for Molecular Sciences (BNLMS), CAS Key Laboratory of Molecular Recognition and Function, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China.
- University of Chinese Academy of Sciences, Beijing 100049, China.
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24
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Sengoku T, Hayashi D, Takahashi M, Yoda H. Electrophilic Amide Allylation of 3-Heterosubstituted Oxindoles: A Route to Spirocyclic 2-Oxindoles Containing the α-Methylene-γ-butyrolactam Structure. European J Org Chem 2018. [DOI: 10.1002/ejoc.201800084] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Tetsuya Sengoku
- Department of Applied Chemistry; Faculty of Engineering; Shizuoka University; 3-5-1 Johoku, Naka-ku 432-8561 Hamamatsu Japan
| | - Daichi Hayashi
- Department of Applied Chemistry; Faculty of Engineering; Shizuoka University; 3-5-1 Johoku, Naka-ku 432-8561 Hamamatsu Japan
| | - Masaki Takahashi
- Department of Applied Chemistry; Faculty of Engineering; Shizuoka University; 3-5-1 Johoku, Naka-ku 432-8561 Hamamatsu Japan
| | - Hidemi Yoda
- Department of Applied Chemistry; Faculty of Engineering; Shizuoka University; 3-5-1 Johoku, Naka-ku 432-8561 Hamamatsu Japan
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25
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Zhang M, Yang W, Qian M, Zhao T, Yang L, Zhu C. Iodine-promoted three-component reaction for the synthesis of spirooxindoles. Tetrahedron 2018. [DOI: 10.1016/j.tet.2018.01.001] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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26
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N-Heterocyclic Carbene-Catalyzed Double Michael Addition: Stereoselective Synthesis of Spirofluorenes and Multisubstituted Indanes. Adv Synth Catal 2018. [DOI: 10.1002/adsc.201701269] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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27
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Guo Y, Meng C, Liu X, Li C, Xia A, Xu Z, Xu D. Successive Waste as Reagent: Two More Steps Forward in a Pinnick Oxidation. Org Lett 2018; 20:913-916. [DOI: 10.1021/acs.orglett.7b03684] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Yanjun Guo
- Catalytic
Hydrogenation Research Center, State Key Laboratory Breeding Base
of Green Chemistry-Synthesis Technology, Zhejiang University of Technology, Hangzhou 310014, China
| | - Chenhong Meng
- Catalytic
Hydrogenation Research Center, State Key Laboratory Breeding Base
of Green Chemistry-Synthesis Technology, Zhejiang University of Technology, Hangzhou 310014, China
| | - Xueli Liu
- School
of Material and Chemical Engineering, Chuzhou University, Chuzhou 239000, China
| | - Chen Li
- Catalytic
Hydrogenation Research Center, State Key Laboratory Breeding Base
of Green Chemistry-Synthesis Technology, Zhejiang University of Technology, Hangzhou 310014, China
| | - Aibao Xia
- Catalytic
Hydrogenation Research Center, State Key Laboratory Breeding Base
of Green Chemistry-Synthesis Technology, Zhejiang University of Technology, Hangzhou 310014, China
| | - Zhenyuan Xu
- Catalytic
Hydrogenation Research Center, State Key Laboratory Breeding Base
of Green Chemistry-Synthesis Technology, Zhejiang University of Technology, Hangzhou 310014, China
| | - Danqian Xu
- Catalytic
Hydrogenation Research Center, State Key Laboratory Breeding Base
of Green Chemistry-Synthesis Technology, Zhejiang University of Technology, Hangzhou 310014, China
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28
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Ding A, Meazza M, Guo H, Yang JW, Rios R. New development in the enantioselective synthesis of spiro compounds. Chem Soc Rev 2018; 47:5946-5996. [DOI: 10.1039/c6cs00825a] [Citation(s) in RCA: 217] [Impact Index Per Article: 36.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
In this review we summarize the latest developments in the enantioselective synthesis of spirocompounds. The most important organometallic and organocatalytic methodologies are highlighted.
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Affiliation(s)
- Aishun Ding
- Department of Chemistry
- Fudan University
- Shanghai
- People's Republic of China
| | - Marta Meazza
- School of Chemistry. University of Southampton. Highfield Campus
- Southampton
- UK
| | - Hao Guo
- Department of Chemistry
- Fudan University
- Shanghai
- People's Republic of China
| | - Jung Woon Yang
- Department of Energy Science
- Sungkyunkwan University
- Suwon 16419
- South Korea
| | - Ramon Rios
- School of Chemistry. University of Southampton. Highfield Campus
- Southampton
- UK
- Department of Energy Science
- Sungkyunkwan University
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29
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Mei GJ, Shi F. Catalytic asymmetric synthesis of spirooxindoles: recent developments. Chem Commun (Camb) 2018; 54:6607-6621. [DOI: 10.1039/c8cc02364f] [Citation(s) in RCA: 286] [Impact Index Per Article: 47.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
The past four years have witnessed significant developments in the field of the catalytic asymmetric synthesis of spirooxindoles, and this feature article outlines the recent progress in this area, including the contributions of our group. This article is divided into sections according to the size and type of the generated spiro-ring fused at the C3-position of the oxindole core.
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Affiliation(s)
- Guang-Jian Mei
- School of Chemistry and Materials Science
- Jiangsu Normal University
- Xuzhou
- China
| | - Feng Shi
- School of Chemistry and Materials Science
- Jiangsu Normal University
- Xuzhou
- China
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30
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Recent Advances in the Synthesis of Spiroheterocycles via N-Heterocyclic Carbene Organocatalysis. Molecules 2017; 22:molecules22111882. [PMID: 29117098 PMCID: PMC6150278 DOI: 10.3390/molecules22111882] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2017] [Accepted: 10/30/2017] [Indexed: 12/01/2022] Open
Abstract
Spiroheterocycles are regarded as a privileged framework because of their wide distribution in various natural products and synthetic molecules and promising bioactivities. This review focuses on the recent advances in the synthesis of spiroheterocycles by using the strategy of N-heterocyclic carbene (NHC) organocatalysis, and is organized based on the stereoselectivity and the reactive intermediates. According to the stereochemistry, this review was divided into two main parts, covering racemic and enantioselective versions. In each part, we firstly describe the synthetic transformations using nucleophilic Breslow intermediates, and then discuss the reactions that employ electrophilic acylazolium or radical cation intermediates. With those distinct catalytic activation modes of NHC organocatlysis, we expect this synthetic protocol will possibly produce new molecules with structural novelty and complexity, which may warrant further research in the field of drug discovery.
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31
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Zhu SY, Zhang Y, Wang W, Hui XP. Stereoselective Synthesis of Functionalized Tetrahydro-1H-1,2-diazepines by N-Heterocyclic Carbene-Catalyzed [3 + 4] Annulation. Org Lett 2017; 19:5380-5383. [DOI: 10.1021/acs.orglett.7b02657] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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
| | - Wei Wang
- 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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32
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Zhang C, Liu M, Ding M, Xie H, Zhang F. A Tandem Oxidative Annulation Strategy for the Synthesis of Tetracyclic 3-Spirooxindole Benzofuranones. Org Lett 2017. [DOI: 10.1021/acs.orglett.7b01374] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Chunxia Zhang
- College of Pharmaceutical Science & Green Pharmaceutical Collaborative Innovation Center of Yangtze River Delta Region, Zhejiang University of Technology, Hangzhou, 310014, P. R. China
| | - Min Liu
- College of Pharmaceutical Science & Green Pharmaceutical Collaborative Innovation Center of Yangtze River Delta Region, Zhejiang University of Technology, Hangzhou, 310014, P. R. China
| | - Mingruo Ding
- College of Pharmaceutical Science & Green Pharmaceutical Collaborative Innovation Center of Yangtze River Delta Region, Zhejiang University of Technology, Hangzhou, 310014, P. R. China
| | - Hao Xie
- College of Pharmaceutical Science & Green Pharmaceutical Collaborative Innovation Center of Yangtze River Delta Region, Zhejiang University of Technology, Hangzhou, 310014, P. R. China
| | - Fengzhi Zhang
- College of Pharmaceutical Science & Green Pharmaceutical Collaborative Innovation Center of Yangtze River Delta Region, Zhejiang University of Technology, Hangzhou, 310014, P. R. China
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33
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Zheng C, Liu X, Ma C. Organocatalytic Direct N-Acylation of Amides with Aldehydes under Oxidative Conditions. J Org Chem 2017; 82:6940-6945. [DOI: 10.1021/acs.joc.7b00457] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Chenguang Zheng
- Department of Chemistry, Zhejiang University, 20 Yugu Road, Hangzhou 310027, China
| | - Xiang Liu
- Department of Chemistry, Zhejiang University, 20 Yugu Road, Hangzhou 310027, China
| | - Cheng Ma
- Department of Chemistry, Zhejiang University, 20 Yugu Road, Hangzhou 310027, China
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34
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Liu J, Peng H, Lu L, Xu X, Jiang H, Yin B. Diastereospecific and Enantioselective Access to Dispirooxindoles from Furfurylcyclobutanols by Means of a Pd-Catalyzed Arylative Dearomatization/Ring Expansion Cascade. Org Lett 2016; 18:6440-6443. [DOI: 10.1021/acs.orglett.6b03339] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Affiliation(s)
- Jianchao Liu
- Key Laboratory of Functional
Molecular Engineering of Guangdong Province, School of Chemistry and
Chemical Engineering, South China University of Technology, Guangzhou 510640, P. R. China
| | - Hui Peng
- Key Laboratory of Functional
Molecular Engineering of Guangdong Province, School of Chemistry and
Chemical Engineering, South China University of Technology, Guangzhou 510640, P. R. China
| | - Lin Lu
- Key Laboratory of Functional
Molecular Engineering of Guangdong Province, School of Chemistry and
Chemical Engineering, South China University of Technology, Guangzhou 510640, P. R. China
| | - Xiaobing Xu
- Key Laboratory of Functional
Molecular Engineering of Guangdong Province, School of Chemistry and
Chemical Engineering, South China University of Technology, Guangzhou 510640, P. R. China
| | - Huanfeng Jiang
- Key Laboratory of Functional
Molecular Engineering of Guangdong Province, School of Chemistry and
Chemical Engineering, South China University of Technology, Guangzhou 510640, P. R. China
| | - Biaolin Yin
- Key Laboratory of Functional
Molecular Engineering of Guangdong Province, School of Chemistry and
Chemical Engineering, South China University of Technology, Guangzhou 510640, P. R. China
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35
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Wang C, Zhu S, Wang G, Li Z, Hui XP. Enantioselective Synthesis of Spiro[indoline-3,2′-pyrroles] through N-Heterocyclic-Carbene-Catalyzed Formal [3+2] Annulation. European J Org Chem 2016. [DOI: 10.1002/ejoc.201600958] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Chengyuan Wang
- State Key Laboratory of Applied Organic Chemistry; College of Chemistry and Chemical Engineering; Lanzhou University; 730000 Lanzhou P. R. China
| | - Shiya Zhu
- State Key Laboratory of Applied Organic Chemistry; College of Chemistry and Chemical Engineering; Lanzhou University; 730000 Lanzhou P. R. China
| | - Guanjun Wang
- State Key Laboratory of Applied Organic Chemistry; College of Chemistry and Chemical Engineering; Lanzhou University; 730000 Lanzhou P. R. China
| | - Zhuopeng Li
- State Key Laboratory of Applied Organic Chemistry; College of Chemistry and Chemical Engineering; Lanzhou University; 730000 Lanzhou P. R. China
| | - Xin-Ping Hui
- State Key Laboratory of Applied Organic Chemistry; College of Chemistry and Chemical Engineering; Lanzhou University; 730000 Lanzhou P. R. China
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36
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Cao Y, Zhang X, Lin G, Zhang-Negrerie D, Du Y. Chiral Aryliodine-Mediated Enantioselective Organocatalytic Spirocyclization: Synthesis of Spirofurooxindoles via Cascade Oxidative C–O and C–C Bond Formation. Org Lett 2016; 18:5580-5583. [DOI: 10.1021/acs.orglett.6b02816] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Yang Cao
- Tianjin Key Laboratory for Modern Drug Delivery & High-Efficiency, School of Pharmaceutical Science and Technology, Tianjin University, Tianjin 300072, P. R. China
| | - Xiang Zhang
- Tianjin Key Laboratory for Modern Drug Delivery & High-Efficiency, School of Pharmaceutical Science and Technology, Tianjin University, Tianjin 300072, P. R. China
| | - Guangyu Lin
- Tianjin Key Laboratory for Modern Drug Delivery & High-Efficiency, School of Pharmaceutical Science and Technology, Tianjin University, Tianjin 300072, P. R. China
| | - Daisy Zhang-Negrerie
- Tianjin Key Laboratory for Modern Drug Delivery & High-Efficiency, School of Pharmaceutical Science and Technology, Tianjin University, Tianjin 300072, P. R. China
| | - Yunfei Du
- Tianjin Key Laboratory for Modern Drug Delivery & High-Efficiency, School of Pharmaceutical Science and Technology, Tianjin University, Tianjin 300072, P. R. China
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin 300072, P. R. China
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37
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Xu J, Yuan S, Miao M, Chen Z. 1-Hydroxybenzotriazole-Assisted, N-Heterocyclic Carbene Catalyzed β-Functionalization of Saturated Carboxylic Esters: Access to Spirooxindole Lactones. J Org Chem 2016; 81:11454-11460. [PMID: 27709941 DOI: 10.1021/acs.joc.6b02032] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
A 1-hydroxybenzotriazole-assisted, N-heterocyclic carbene catalyzed direct β-functionalization of saturated carboxylic esters is disclosed. This formal [3 + 2] annulation reaction of carboxylic esters with isatins affords optically pure spirooxindole lactones (on gram scale) bearing two vicinal stereogenic centers. A dual role of HOBt is proposed based on controlled experiments to rationalize the enhancement of diastereoselectivity and enantioselectivity.
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Affiliation(s)
- Jianfeng Xu
- Department of Chemistry, Zhejiang Sci-Tech University , Hangzhou 310018, P.R. China
| | - Shiru Yuan
- Department of Chemistry, Zhejiang Sci-Tech University , Hangzhou 310018, P.R. China
| | - Maozhong Miao
- Department of Chemistry, Zhejiang Sci-Tech University , Hangzhou 310018, P.R. China
| | - Zhengkai Chen
- Department of Chemistry, Zhejiang Sci-Tech University , Hangzhou 310018, P.R. China
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38
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Zhao YY, Zhao S, Xie JK, Hu XQ, Xu PF. Synthesis of Spirocyclic Oxindole Dihydrothiophenes by DBU-Catalyzed [3 + 2] Annulation of Morita–Baylis–Hillman Carbonates with Isothiocyanates. J Org Chem 2016; 81:10532-10537. [DOI: 10.1021/acs.joc.6b01315] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Affiliation(s)
- Yuan-Yuan Zhao
- State
Key Laboratory of Applied Organic Chemistry, College of Chemistry
and Chemical Engineering, Lanzhou University, Lanzhou 730000, P. R. China
| | - Shuai Zhao
- School of Pharmaceutical Engineering & Life Science, Changzhou University, Changzhou 213164, P. R. China
| | - Ji-Kang Xie
- State
Key Laboratory of Applied Organic Chemistry, College of Chemistry
and Chemical Engineering, Lanzhou University, Lanzhou 730000, P. R. China
| | - Xiu-Qin Hu
- State
Key Laboratory of Applied Organic Chemistry, College of Chemistry
and Chemical Engineering, Lanzhou University, Lanzhou 730000, P. R. China
| | - Peng-Fei Xu
- State
Key Laboratory of Applied Organic Chemistry, College of Chemistry
and Chemical Engineering, Lanzhou University, Lanzhou 730000, P. R. China
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39
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Tang Z, Liu Z, An Y, Jiang R, Zhang X, Li C, Jia X, Li J. Isocyanide-Based Multicomponent Bicyclization with Substituted Allenoate and Isatin: Synthesis of Unusual Spirooxindole Containing [5.5]-Fused Heterocycle. J Org Chem 2016; 81:9158-9166. [DOI: 10.1021/acs.joc.6b01711] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Zhongzhong Tang
- Department of Chemistry,
Innovative Drug Research Center, and ‡Shanghai Key Laboratory of High
Temperature Superconductors, Shanghai University, Shanghai 200444, People’s Republic of China
| | - Zhiqiang Liu
- Department of Chemistry,
Innovative Drug Research Center, and ‡Shanghai Key Laboratory of High
Temperature Superconductors, Shanghai University, Shanghai 200444, People’s Republic of China
| | - Yu An
- Department of Chemistry,
Innovative Drug Research Center, and ‡Shanghai Key Laboratory of High
Temperature Superconductors, Shanghai University, Shanghai 200444, People’s Republic of China
| | - Ruolan Jiang
- Department of Chemistry,
Innovative Drug Research Center, and ‡Shanghai Key Laboratory of High
Temperature Superconductors, Shanghai University, Shanghai 200444, People’s Republic of China
| | - Xinglu Zhang
- Department of Chemistry,
Innovative Drug Research Center, and ‡Shanghai Key Laboratory of High
Temperature Superconductors, Shanghai University, Shanghai 200444, People’s Republic of China
| | - Chunju Li
- Department of Chemistry,
Innovative Drug Research Center, and ‡Shanghai Key Laboratory of High
Temperature Superconductors, Shanghai University, Shanghai 200444, People’s Republic of China
| | - Xueshun Jia
- Department of Chemistry,
Innovative Drug Research Center, and ‡Shanghai Key Laboratory of High
Temperature Superconductors, Shanghai University, Shanghai 200444, People’s Republic of China
| | - Jian Li
- Department of Chemistry,
Innovative Drug Research Center, and ‡Shanghai Key Laboratory of High
Temperature Superconductors, Shanghai University, Shanghai 200444, People’s Republic of China
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40
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Mal K, Naskar S, Sen SK, Natarajan R, Das I. Tandem Chemoselective 1,2-/1,4-Migration of the Thio Group in Keto Thioesters: An Efficient Approach to Substituted Butenolides. Adv Synth Catal 2016. [DOI: 10.1002/adsc.201600640] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- Kanchan Mal
- Organic and Medicinal Chemistry Division; CSIR-Indian Institute of Chemical Biology; 4 Raja S. C. Mullick Road Jadavpur, Kolkata - 700032 India
| | - Sandip Naskar
- Organic and Medicinal Chemistry Division; CSIR-Indian Institute of Chemical Biology; 4 Raja S. C. Mullick Road Jadavpur, Kolkata - 700032 India
| | - Shovan Kumar Sen
- Organic and Medicinal Chemistry Division; CSIR-Indian Institute of Chemical Biology; 4 Raja S. C. Mullick Road Jadavpur, Kolkata - 700032 India
| | - Ramalingam Natarajan
- Organic and Medicinal Chemistry Division; CSIR-Indian Institute of Chemical Biology; 4 Raja S. C. Mullick Road Jadavpur, Kolkata - 700032 India
| | - Indrajit Das
- Organic and Medicinal Chemistry Division; CSIR-Indian Institute of Chemical Biology; 4 Raja S. C. Mullick Road Jadavpur, Kolkata - 700032 India
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41
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Vishwanath M, Vinayagam P, Gajulapalli VPR, Kesavan V. Asymmetric Organocatalytic Assembly of Oxindoles Fused with Spiro-3,4-dihydropyrans with Three Contiguous Stereocenters Consisting of Vicinal Quaternary Centers. ASIAN J ORG CHEM 2016. [DOI: 10.1002/ajoc.201600051] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Affiliation(s)
- Manjunatha Vishwanath
- Chemical Biology Laboratory; Department of Biotechnology; Bhupat and Jyothi Mehta School of Biosciences; Indian Institute of Technology Madras; Chennai 600036 India
| | - Poopathy Vinayagam
- Chemical Biology Laboratory; Department of Biotechnology; Bhupat and Jyothi Mehta School of Biosciences; Indian Institute of Technology Madras; Chennai 600036 India
| | - V Pratap Reddy Gajulapalli
- Chemical Biology Laboratory; Department of Biotechnology; Bhupat and Jyothi Mehta School of Biosciences; Indian Institute of Technology Madras; Chennai 600036 India
| | - Venkitasamy Kesavan
- Chemical Biology Laboratory; Department of Biotechnology; Bhupat and Jyothi Mehta School of Biosciences; Indian Institute of Technology Madras; Chennai 600036 India
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42
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Kumarswamyreddy N, Kesavan V. Enantioselective Synthesis of Dihydrospiro[indoline-3,4′-pyrano[2,3-c]pyrazole] Derivatives via Michael/Hemiketalization Reaction. Org Lett 2016; 18:1354-7. [DOI: 10.1021/acs.orglett.6b00287] [Citation(s) in RCA: 88] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Nandarapu Kumarswamyreddy
- Chemical Biology Laboratory,
Department of Biotechnology, Bhupat and Jyoti Mehta School of Biosciences, Indian Institute of Technology Madras, Chennai 600036, India
| | - Venkitasamy Kesavan
- Chemical Biology Laboratory,
Department of Biotechnology, Bhupat and Jyoti Mehta School of Biosciences, Indian Institute of Technology Madras, Chennai 600036, India
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43
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Elinson MN, Ryzhkov FV, Korolev VA, Egorov MP. Pot, atom and step-economic (PASE) synthesis of medicinally relevant spiro[oxindole-3,4′-pyrano[4,3-b]pyran] scaffold. HETEROCYCL COMMUN 2016. [DOI: 10.1515/hc-2015-0232] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
AbstractFast (3 min) pot, atom and step economics (PASE) potassium fluoride catalyzed multicomponent reaction of isatins, malononitrile and 4-hydroxy-6-methyl-2H-pyran-2-one results in efficient formation of substituted spirooxindole-3,4′-pyrano[4,3-b]pyrans in 92–96% yields. The developed ‘on-solvent’ approach to the substituted spirooxindole-3,4′-pyrano[4,3-b]pyrans – the pharmacologically perspective substances with known antiviral, antileishmanial, anticonvulsant and anti-HIV activities – is beneficial from the viewpoint of diversity-oriented large-scale processes and represents fast and environmentally benign synthetic concept for the multicomponent reactions strategy.
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Affiliation(s)
- Michail N. Elinson
- 1 N. D. Zelinsky Institute of Organic Chemistry, Leninsky prospect 47, 119991 Moscow, Russian Federation
| | - Fedor V. Ryzhkov
- 1 N. D. Zelinsky Institute of Organic Chemistry, Leninsky prospect 47, 119991 Moscow, Russian Federation
| | - Victor A. Korolev
- 1 N. D. Zelinsky Institute of Organic Chemistry, Leninsky prospect 47, 119991 Moscow, Russian Federation
| | - Mikhail P. Egorov
- 1 N. D. Zelinsky Institute of Organic Chemistry, Leninsky prospect 47, 119991 Moscow, Russian Federation
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44
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Kunkalkar RA, Laha D, Fernandes RA. De novo protecting-group-free total synthesis of (+)-muricadienin, (+)-ancepsenolide and (+)-3-hexadecyl-5-methylfuran-2(5H)-one. Org Biomol Chem 2016; 14:9072-9079. [DOI: 10.1039/c6ob01721e] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A de novo protecting-group-free total synthesis of (+)-muricadienin, (+)-ancepsenolide and (+)-3-hexadecyl-5-methylfuran-2(5H)-one has been achieved by ring-closing-metathesis and sp–sp3 Sonogashira type coupling.
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Affiliation(s)
- Rupesh A. Kunkalkar
- Department of Chemistry
- Indian Institute of Technology Bombay Powai
- Mumbai 400076
- India
| | - Debasish Laha
- Department of Chemistry
- Indian Institute of Technology Bombay Powai
- Mumbai 400076
- India
| | - Rodney A. Fernandes
- Department of Chemistry
- Indian Institute of Technology Bombay Powai
- Mumbai 400076
- India
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45
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Liu Y, Sun Z, Li S, Xiang K, Zhang Y, Li Y. Mg(ClO4)2-promoted [4 + 3] cycloaddition of oxindole derivatives with conjugated dienes: concise synthesis of spirocycloheptane oxindole derivatives. RSC Adv 2016. [DOI: 10.1039/c6ra03259a] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Novel Mg(ClO4)2-promoted [4 + 3] cycloaddition reaction of oxindole derivatives and cyclopentadiene was achieved for the construction of the spirocycloheptane oxindole skeleton.
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Affiliation(s)
- Yun Liu
- State Key Laboratory of Applied Organic Chemistry & College of Chemistry and Chemical Engineering
- Lanzhou University
- Lanzhou
- P. R. China
| | - Zhou Sun
- State Key Laboratory of Applied Organic Chemistry & College of Chemistry and Chemical Engineering
- Lanzhou University
- Lanzhou
- P. R. China
| | - Song Li
- State Key Laboratory of Applied Organic Chemistry & College of Chemistry and Chemical Engineering
- Lanzhou University
- Lanzhou
- P. R. China
| | - Kuirong Xiang
- State Key Laboratory of Applied Organic Chemistry & College of Chemistry and Chemical Engineering
- Lanzhou University
- Lanzhou
- P. R. China
| | - Yuan Zhang
- State Key Laboratory of Applied Organic Chemistry & College of Chemistry and Chemical Engineering
- Lanzhou University
- Lanzhou
- P. R. China
| | - Ying Li
- State Key Laboratory of Applied Organic Chemistry & College of Chemistry and Chemical Engineering
- Lanzhou University
- Lanzhou
- P. R. China
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46
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Huang H, Bihani M, Zhao JCG. Stereoselective synthesis of spirooxindole derivatives using an organocatalyzed tandem Michael–Michael reaction. Org Biomol Chem 2016; 14:1755-63. [DOI: 10.1039/c5ob02348c] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A highly efficient and stereoselective method for the synthesis of functionalized spirooxindole derivatives was realized using enamine catalysis.
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Affiliation(s)
- Huicai Huang
- Department of Chemistry
- University of Texas at San Antonio
- San Antonio
- USA
| | - Manisha Bihani
- Department of Chemistry
- University of Texas at San Antonio
- San Antonio
- USA
| | - John C.-G. Zhao
- Department of Chemistry
- University of Texas at San Antonio
- San Antonio
- USA
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47
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Uruvakili A, Gangadhararao G, Kumara Swamy KC. Gold(I) catalysed sequential dehydrative cyclisation/intermolecular [4 + 2] cycloaddition of alkynyldienols onto activated alkynes/alkenes: a facile route to substituted norbornadienes/norbornenes. Org Biomol Chem 2015; 13:10060-71. [PMID: 26335651 DOI: 10.1039/c5ob01458a] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
One-pot synthesis of highly substituted norbornadienes/norbornenes via gold-catalysed dehydrative cyclisation of alkynyldienols, followed by intermolecular [4 + 2] cycloaddition of in situ generated cyclopentadiene and activated alkynes/alkenes is described. The precursors, alkynyldienols, are obtained via sequential Sonogashira cross-coupling of 3-bromoenals, alkyne addition and reduction. Yields of the enynals and multisubstituted norbornadienes in all the cases are good to excellent.
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Affiliation(s)
- Anasuyamma Uruvakili
- School of Chemistry, University of Hyderabad, Hyderabad-500046, Telangana, India.
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48
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Flanigan DM, Romanov-Michailidis F, White NA, Rovis T. Organocatalytic Reactions Enabled by N-Heterocyclic Carbenes. Chem Rev 2015; 115:9307-87. [PMID: 25992594 PMCID: PMC4986729 DOI: 10.1021/acs.chemrev.5b00060] [Citation(s) in RCA: 1395] [Impact Index Per Article: 155.0] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
- Darrin M Flanigan
- Department of Chemistry, Colorado State University , Fort Collins, Colorado 80523, United States
| | | | - Nicholas A White
- Department of Chemistry, Colorado State University , Fort Collins, Colorado 80523, United States
| | - Tomislav Rovis
- Department of Chemistry, Colorado State University , Fort Collins, Colorado 80523, United States
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49
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Organocatalytic Enantioselective Synthesis of Polysubstituted Spirooxindoles using a Tandem Michael-Michael Reaction. Adv Synth Catal 2015. [DOI: 10.1002/adsc.201500298] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
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50
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Wang L, Ni Q, Blümel M, Shu T, Raabe G, Enders D. NHC-Catalyzed Asymmetric Synthesis of Functionalized Succinimides from Enals and α-Ketoamides. Chemistry 2015; 21:8033-7. [PMID: 25877658 PMCID: PMC4648042 DOI: 10.1002/chem.201500661] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2015] [Indexed: 11/21/2022]
Abstract
The efficient asymmetric synthesis of highly substituted succinimides from α,β-unsaturated aldehydes and α-ketoamides via NHC-catalyzed [3+2] cycloaddition has been developed. The new scalable protocol significantly expands the utility of NHC catalysis for the synthesis of heterocycles and provides easy access to assemble a wide range of succinimides from simple starting materials.
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Affiliation(s)
- Lei Wang
- Institute of Organic Chemistry, RWTH Aachen UniversityLandoltweg 1, 52074 Aachen (Germany) E-mail:
| | - Qijian Ni
- Institute of Organic Chemistry, RWTH Aachen UniversityLandoltweg 1, 52074 Aachen (Germany) E-mail:
| | - Marcus Blümel
- Institute of Organic Chemistry, RWTH Aachen UniversityLandoltweg 1, 52074 Aachen (Germany) E-mail:
| | - Tao Shu
- Institute of Organic Chemistry, RWTH Aachen UniversityLandoltweg 1, 52074 Aachen (Germany) E-mail:
| | - Gerhard Raabe
- Institute of Organic Chemistry, RWTH Aachen UniversityLandoltweg 1, 52074 Aachen (Germany) E-mail:
| | - Dieter Enders
- Institute of Organic Chemistry, RWTH Aachen UniversityLandoltweg 1, 52074 Aachen (Germany) E-mail:
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