1
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Wang F, Pan JQ, Shi RX, Ning R, Wu M. Diastereoselective Synthesis of Dihydrobenzofuran Spirooxindoles and Their Transformation into Benzofuroquinolinones by Ring Expansion of Oxindole Core. J Org Chem 2024; 89:5142-5147. [PMID: 38545874 DOI: 10.1021/acs.joc.3c02956] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/06/2024]
Abstract
A mild and efficient approach for the diastereoselective synthesis of dihydrobenzofuran spirooxindoles using 3-chlorooxindoles and imines is presented. This process involves a formal [4 + 1] annulation, yielding the product with excellent diastereoselectivity. Furthermore, a novel method for constructing benzofuroquinolinone scaffolds through the ring expansion of oxindoles has been established. This method involves a lactam ring expansion to the quinolinone skeleton. Besides, a one-pot procedure for creating benzofuroquinolinone scaffolds from 3-chlorooxindoles and imines is also provided.
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Affiliation(s)
- Feng Wang
- Key Laboratory of Tropical Medicinal Resource Chemistry of Ministry of Education, College of Chemistry & Chemical Engineering, Hainan Normal University, Haikou 571158, People's Republic of China
| | - Jia-Qi Pan
- Key Laboratory of Tropical Medicinal Resource Chemistry of Ministry of Education, College of Chemistry & Chemical Engineering, Hainan Normal University, Haikou 571158, People's Republic of China
| | - Ruo-Xian Shi
- Key Laboratory of Tropical Medicinal Resource Chemistry of Ministry of Education, College of Chemistry & Chemical Engineering, Hainan Normal University, Haikou 571158, People's Republic of China
| | - Rui Ning
- Key Laboratory of Tropical Medicinal Resource Chemistry of Ministry of Education, College of Chemistry & Chemical Engineering, Hainan Normal University, Haikou 571158, People's Republic of China
- Key Laboratory of Tropical Medicinal Plant Chemistry of Hainan Province, College of Chemistry and Chemical Engineering, Hainan Normal University, Haikou 571158, People's Republic of China
| | - Mingshu Wu
- Key Laboratory of Tropical Medicinal Resource Chemistry of Ministry of Education, College of Chemistry & Chemical Engineering, Hainan Normal University, Haikou 571158, People's Republic of China
- Key Laboratory of Tropical Medicinal Plant Chemistry of Hainan Province, College of Chemistry and Chemical Engineering, Hainan Normal University, Haikou 571158, People's Republic of China
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2
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Qi SS, Sun XP, Sun YB, Zhai JJ, Wang YF, Chu MM, Xu DQ. Synthesis of Chiral Diarylmethylamides via Catalytic Asymmetric Aza-Michael Addition of Amides to ortho-Quinomethanes. J Org Chem 2024. [PMID: 38181049 DOI: 10.1021/acs.joc.3c01976] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2024]
Abstract
Chiral diarylmethylamides are a privileged skeleton in many bioactive molecules. However, the enantioselective synthesis of such molecules remains a long-standing challenge in organic synthesis. Herein, we report a chiral bifunctional squaramide catalyzed asymmetric aza-Michael addition of amides to in situ generated ortho-quinomethanes, affording enantioenriched diarylmethylamides in good yields with excellent enantioselectivities. This work not only provides a new strategy for the construction of the diarylmethylamides but also represents the practicability of amides as nitrogen-nucleophiles in asymmetric organocatalysis.
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Affiliation(s)
- Suo-Suo Qi
- Catalytic Hydrogenation Research Center, State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, Key Laboratory of Green Pesticides and Cleaner Production Technology of Zhejiang Province, Zhejiang University of Technology, Hangzhou 310014, P. R. China
| | - Xiao-Ping Sun
- Catalytic Hydrogenation Research Center, State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, Key Laboratory of Green Pesticides and Cleaner Production Technology of Zhejiang Province, Zhejiang University of Technology, Hangzhou 310014, P. R. China
| | - Yan-Biao Sun
- Catalytic Hydrogenation Research Center, State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, Key Laboratory of Green Pesticides and Cleaner Production Technology of Zhejiang Province, Zhejiang University of Technology, Hangzhou 310014, P. R. China
| | - Jing-Jing Zhai
- Catalytic Hydrogenation Research Center, State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, Key Laboratory of Green Pesticides and Cleaner Production Technology of Zhejiang Province, Zhejiang University of Technology, Hangzhou 310014, P. R. China
| | - Yi-Feng Wang
- Catalytic Hydrogenation Research Center, State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, Key Laboratory of Green Pesticides and Cleaner Production Technology of Zhejiang Province, Zhejiang University of Technology, Hangzhou 310014, P. R. China
| | - Ming-Ming Chu
- College of Biological, Chemical Sciences and Engineering, Jiaxing University, Jiaxing 314001, P. R. China
| | - Dan-Qian Xu
- Catalytic Hydrogenation Research Center, State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, Key Laboratory of Green Pesticides and Cleaner Production Technology of Zhejiang Province, Zhejiang University of Technology, Hangzhou 310014, P. R. China
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3
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Ma T, Zheng Y, Huang S. SO 2ClF: A Reagent for Controllable Chlorination and Chlorooxidation of Simple Unprotected Indoles. J Org Chem 2023; 88:4839-4847. [PMID: 36931283 DOI: 10.1021/acs.joc.3c00039] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/19/2023]
Abstract
Sulfuryl chlorofluoride was first employed as a versatile reagent for controllable chlorination and chlorooxidation of simple unprotected indoles. Three types of products including 3-chloro-indoles, 3-chloro-2-oxindoles, and 3,3-dichloro-2-oxindoles could be selectively obtained in good to excellent yields by switching the reaction solvents. The present method features easy-to-operate, broad substrate scope, and mild reaction conditions.
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Affiliation(s)
- Tianting Ma
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources International Innovation Center for Forest Chemicals and Materials, Nanjing Forestry University, Nanjing 210037, China
| | - Yu Zheng
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources International Innovation Center for Forest Chemicals and Materials, Nanjing Forestry University, Nanjing 210037, China
| | - Shenlin Huang
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources International Innovation Center for Forest Chemicals and Materials, Nanjing Forestry University, Nanjing 210037, China
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4
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A Novel Method to Construct 2-Aminobenzofurans via [4 + 1] Cycloaddition Reaction of In Situ Generated Ortho-Quinone Methides with Isocyanides. MOLECULES (BASEL, SWITZERLAND) 2022; 27:molecules27238538. [PMID: 36500630 PMCID: PMC9737762 DOI: 10.3390/molecules27238538] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/20/2022] [Revised: 11/28/2022] [Accepted: 12/02/2022] [Indexed: 12/09/2022]
Abstract
A new approach for the synthesis of 2-aminobenzofurans has been described via Sc(OTf)3 mediated formal cycloaddition of isocyanides with the in situ generated ortho-quinone methides (o-QMs) from o-hydroxybenzhydryl alcohol. Notably, as a class of readily available and highly active intermediates, o-QMs were first used in the construction of benzofurans. This [4 + 1] cycloaddition reaction provides a straightforward and efficient methodology for the construction of 2-aminobenzofurans scaffold in good yield (up to 93% yield) under mild conditions.
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5
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Topanov PA, Maslivets AA, Dmitriev MV, Mashevskaya IV, Shklyaev YV, Maslivets AN. A facile approach to spiro[dihydrofuran-2,3'-oxindoles] via formal [4 + 1] annulation reaction of fused 1 H-pyrrole-2,3-diones with diazooxindoles. Beilstein J Org Chem 2022; 18:1532-1538. [DOI: 10.3762/bjoc.18.162] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2022] [Accepted: 11/03/2022] [Indexed: 11/12/2022] Open
Abstract
There has been developed an easy synthetic approach to spiro[dihydrofuran-2,3'-oxindoles] via a highly diastereoselective formal [4 + 1] cycloaddition reaction of [e]-fused 1H-pyrrole-2,3-diones with diazooxindoles. The described novel heterocyclic systems are heteroanalogues of antimicrobial and antibiofilm fungal metabolites. The developed reaction represents the first example of involving 1H-pyrrole-2,3-diones fused at the [e]-side in a [4 + 1] annulation reaction.
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6
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Ma YH, He XY, Wang L, Yang QQ. PPh 3-Triggered Tandem Synthesis of 2,3-Disubstituted Benzofuran Derivatives from o-Quinone Methides with Acyl Chlorides. J Org Chem 2022; 87:11852-11856. [PMID: 35960255 DOI: 10.1021/acs.joc.2c00910] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A PPh3-triggered tandem strategy for the efficient synthesis of valuable 2,3-disubstituted benzofuran derivatives in generally good to high yields from aryl or alkyl acyl chlorides and o-quinone methides has been developed. This method features mild reaction conditions, simple operation, and a broad substrate scope.
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Affiliation(s)
- Yu-Hong Ma
- College of Materials and Chemical Engineering, Key Laboratory of Inorganic Nonmetallic Crystalline and Energy Conversion Materials, China Three Gorges University, 8 Daxue Road, Yichang, Hubei 443002, People's Republic of China
| | - Xiao-Yu He
- College of Materials and Chemical Engineering, Key Laboratory of Inorganic Nonmetallic Crystalline and Energy Conversion Materials, China Three Gorges University, 8 Daxue Road, Yichang, Hubei 443002, People's Republic of China
| | - Long Wang
- College of Materials and Chemical Engineering, Key Laboratory of Inorganic Nonmetallic Crystalline and Energy Conversion Materials, China Three Gorges University, 8 Daxue Road, Yichang, Hubei 443002, People's Republic of China.,Hubei Three Gorges Labratory, Yichang, Hubei 443007, People's Republic of China
| | - Qing-Qing Yang
- College of Materials and Chemical Engineering, Key Laboratory of Inorganic Nonmetallic Crystalline and Energy Conversion Materials, China Three Gorges University, 8 Daxue Road, Yichang, Hubei 443002, People's Republic of China.,Hubei Three Gorges Labratory, Yichang, Hubei 443007, People's Republic of China
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7
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Biswas S, Balha M, Das S, Pan SC. Organocatalytic Asymmetric Reaction between α‐Cyano Enones and Dioxindoles: Synthesis of Dihydrofuran‐Spirooxindoles. ASIAN J ORG CHEM 2022. [DOI: 10.1002/ajoc.202200359] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Subhankar Biswas
- Indian Institute of Technology Guwahati Chemistry IITG Road 781039 Guwahati INDIA
| | - Megha Balha
- Indian Institute of Technology Guwahati Chemistry IITG Road 781039 Guwahati INDIA
| | - Suman Das
- Indian Institute of Technology Guwahati Chemistry IITG Road 781039 Guwahati INDIA
| | - Subhas Chandra Pan
- Indian Institute of Technology Guwahati Chemistry Department of Chemistry, Indian Institute of Technology Guwahati 781039 Guwahati INDIA
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8
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Diastereodivergent formal [4 + 1] cycloaddition of azoalkenes as one-carbon synthons. GREEN SYNTHESIS AND CATALYSIS 2022. [DOI: 10.1016/j.gresc.2022.05.003] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023] Open
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9
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Wang RN, Ma YH, Su QQ, Fan YX, Lv YZ, Zhang XZ, Wang YL, Huang HL, Du JY. Acid-promoted formal [3 + 2] cyclization/ N, O-ketalization of in situ generated ortho-alkynyl quinone methides: access to bridged 2,3-cyclopentanoindoline skeletons. Org Chem Front 2022. [DOI: 10.1039/d2qo00234e] [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
An acid-catalyzed formal [3 + 2] cyclization/N,O-ketalization of in situ formed ortho-alkynyl quinone methides (o-AQMs) and tryptophol derivatives was developed.
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Affiliation(s)
- Ruo-Nan Wang
- College of Chemistry and Chemical Engineering, Liaocheng University, Liaocheng, Shandong 252059, China
| | - Yan-Hua Ma
- College of Chemistry and Chemical Engineering, Liaocheng University, Liaocheng, Shandong 252059, China
| | - Qing-Qiang Su
- College of Chemistry and Chemical Engineering, Liaocheng University, Liaocheng, Shandong 252059, China
| | - Ya-Xin Fan
- College of Chemistry and Chemical Engineering, Liaocheng University, Liaocheng, Shandong 252059, China
| | - Yong-Zheng Lv
- College of Chemistry and Chemical Engineering, Liaocheng University, Liaocheng, Shandong 252059, China
| | - Xiang-Zhi Zhang
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen, Guangdong 529020, China
| | - Yan-Lan Wang
- College of Chemistry and Chemical Engineering, Liaocheng University, Liaocheng, Shandong 252059, China
| | - Hong-Li Huang
- College of Chemistry and Chemical Engineering, Liaocheng University, Liaocheng, Shandong 252059, China
| | - Ji-Yuan Du
- College of Chemistry and Chemical Engineering, Liaocheng University, Liaocheng, Shandong 252059, China
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10
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Pan Y, Ren W, Zhang Z, Luo F, Hou X, Li X, Yang YF, Wang Y. Tandem 1,6-addition/cyclopropanation/rearrangement reaction of vinylogous para-quinone methides with 3-chlorooxindoles: construction of vicinal quaternary carbon centers. Org Chem Front 2022. [DOI: 10.1039/d2qo00471b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A novel tandem 1,6-addition/cyclopropanation/rearrangement reaction of vinylogous para-quinone methides with 3-chlorooxindoles has been developed, providing dispirooxindole–cyclopentane–cyclohexadienones with vicinal quaternary carbon centers.
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Affiliation(s)
- Yuan Pan
- Molecular Synthesis Center & Key Laboratory of Marine Drugs, Chinese Ministry of Education, School of Medicine and Pharmacy, Ocean University of China, 5 Yushan Road, Qingdao 266003, China
| | - Weiwu Ren
- Molecular Synthesis Center & Key Laboratory of Marine Drugs, Chinese Ministry of Education, School of Medicine and Pharmacy, Ocean University of China, 5 Yushan Road, Qingdao 266003, China
- Laboratory for Marine Drugs and Bioproducts, Qingdao National Laboratory for Marine Science and Technology (QNLM), Qingdao 266237, China
| | - Zhanhao Zhang
- College of Chemical Engineering, Zhejiang University of Technology, Hangzhou, Zhejiang 310014, China
| | - Fengbiao Luo
- Molecular Synthesis Center & Key Laboratory of Marine Drugs, Chinese Ministry of Education, School of Medicine and Pharmacy, Ocean University of China, 5 Yushan Road, Qingdao 266003, China
| | - Xiaohan Hou
- Molecular Synthesis Center & Key Laboratory of Marine Drugs, Chinese Ministry of Education, School of Medicine and Pharmacy, Ocean University of China, 5 Yushan Road, Qingdao 266003, China
| | - Xiaoyang Li
- Molecular Synthesis Center & Key Laboratory of Marine Drugs, Chinese Ministry of Education, School of Medicine and Pharmacy, Ocean University of China, 5 Yushan Road, Qingdao 266003, China
| | - Yun-Fang Yang
- College of Chemical Engineering, Zhejiang University of Technology, Hangzhou, Zhejiang 310014, China
| | - Yang Wang
- Molecular Synthesis Center & Key Laboratory of Marine Drugs, Chinese Ministry of Education, School of Medicine and Pharmacy, Ocean University of China, 5 Yushan Road, Qingdao 266003, China
- Laboratory for Marine Drugs and Bioproducts, Qingdao National Laboratory for Marine Science and Technology (QNLM), Qingdao 266237, China
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11
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Zhang L, Xiao J, Wang Y, Peng Y. Recent Advances on the Construction of Chiral Dihydrobenzofurans by Asymmetric [3+2] Cyclization Reactions of Phenols (Quinones) and Alkenes. ACTA CHIMICA SINICA 2022. [DOI: 10.6023/a22040173] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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12
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Hu F, Wang L, Wang P, Ding Z, Chen Y, Xu L, Liu XL, Li SS. Switchable construction of oxa-heterocycles with diverse ring sizes via chemoselective cyclization controlled by dibrominated compounds. Org Chem Front 2022. [DOI: 10.1039/d2qo01273a] [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
Switchable construction of oxa-heterocycles with diverse ring sizes has been developed by performing dibrominated-compound-controlled chemoselective cyclization and subsequent derivatization.
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Affiliation(s)
- Fangzhi Hu
- College of Chemistry and Pharmaceutical Sciences, Qingdao Agricultural University, Qingdao 266109, China
| | - Liang Wang
- College of Chemistry and Pharmaceutical Sciences, Qingdao Agricultural University, Qingdao 266109, China
| | - Peng Wang
- College of Chemistry and Pharmaceutical Sciences, Qingdao Agricultural University, Qingdao 266109, China
| | - Zhanshuai Ding
- College of Chemistry and Pharmaceutical Sciences, Qingdao Agricultural University, Qingdao 266109, China
| | - Yuzhuo Chen
- College of Chemistry and Pharmaceutical Sciences, Qingdao Agricultural University, Qingdao 266109, China
| | - Lubin Xu
- College of Chemistry and Pharmaceutical Sciences, Qingdao Agricultural University, Qingdao 266109, China
| | - Xiong-Li Liu
- National & Local Joint Engineering Research Center for the Exploitation of Homology Resources of Southwest Medicine and Food, Guizhou University, Guiyang 550025, P. R. China
| | - Shuai-Shuai Li
- College of Chemistry and Pharmaceutical Sciences, Qingdao Agricultural University, Qingdao 266109, China
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13
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Liu L, Li Y, Huang T, Kong D, Wu M. A novel methodology for the efficient synthesis of 3-monohalooxindoles by acidolysis of 3-phosphate-substituted oxindoles with haloid acids. Beilstein J Org Chem 2021; 17:2321-2328. [PMID: 34621395 PMCID: PMC8450974 DOI: 10.3762/bjoc.17.150] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2021] [Accepted: 08/27/2021] [Indexed: 11/23/2022] Open
Abstract
A novel method for the synthesis of 3-monohalooxindoles by acidolysis of isatin-derived 3-phosphate-substituted oxindoles with haloid acids was developed. This synthetic strategy involved the preparation of 3-phosphate-substituted oxindole intermediates and SN1 reactions with haloid acids. This new procedure features mild reaction conditions, simple operation, good yield, readily available and inexpensive starting materials, and gram-scalability.
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Affiliation(s)
- Li Liu
- Key Laboratory of Tropical Medicinal Plant Chemistry of the Ministry of Education, College of Chemistry & Chemical Engineering, Hainan Normal University, Haikou 571158, Hainan Province, P. R. China
| | - Yue Li
- Key Laboratory of Tropical Medicinal Plant Chemistry of the Ministry of Education, College of Chemistry & Chemical Engineering, Hainan Normal University, Haikou 571158, Hainan Province, P. R. China
| | - Tiao Huang
- Key Laboratory of Tropical Medicinal Plant Chemistry of the Ministry of Education, College of Chemistry & Chemical Engineering, Hainan Normal University, Haikou 571158, Hainan Province, P. R. China
| | - Dulin Kong
- School of Pharmaceutical Sciences, Hainan Medical University, Haikou 571199, Hainan Province, P. R. China
| | - Mingshu Wu
- Key Laboratory of Tropical Medicinal Plant Chemistry of the Ministry of Education, College of Chemistry & Chemical Engineering, Hainan Normal University, Haikou 571158, Hainan Province, P. R. China
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14
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Parida C, Mondal B, Ghosh A, Pan SC. Organocatalytic Asymmetric Synthesis of Spirooxindole Embedded Oxazolidines. J Org Chem 2021; 86:13082-13091. [PMID: 34448585 DOI: 10.1021/acs.joc.1c00644] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
The first organocatalytic asymmetric synthesis of spirooxindole embedded oxazolidines has been developed via a domino reaction involving hemiaminal formation, followed by an unprecedented aza-Michael reaction between isatin derived N-Boc ketimines and γ-hydroxy enones. A quinine derived bifunctional squaramide catalyst was found to be efficient for this reaction, and the products were obtained in good diastereoselectivity and with high enantioselectivity.
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Affiliation(s)
- Chandrakanta Parida
- Department of Chemistry, Indian Institute of Technology Guwahati, North Guwahati, Assam 781039, India
| | - Buddhadeb Mondal
- Department of Chemistry, Indian Institute of Technology Guwahati, North Guwahati, Assam 781039, India
| | - Animesh Ghosh
- Department of Chemistry, Indian Institute of Technology Guwahati, North Guwahati, Assam 781039, India
| | - Subhas Chandra Pan
- Department of Chemistry, Indian Institute of Technology Guwahati, North Guwahati, Assam 781039, India
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15
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Zhong X, Luo J, Zhou W, Cai Q. A Synthesis of Spirooxindole‐Isoindolinones Through Ugi Reaction Followed by Copper‐Catalyzed Tandem C−N/C−C Coupling Process. Adv Synth Catal 2021. [DOI: 10.1002/adsc.202100889] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Affiliation(s)
- Xianqiang Zhong
- International Cooperative Laboratory of Traditional Chinese Medicine Modernization and Innovative Drug Development of Chinese Ministry of Education College of Pharmacy Jinan University No. 601 Huangpu Avenue West Guangzhou 510632 People's Republic of China
| | - Jianghao Luo
- International Cooperative Laboratory of Traditional Chinese Medicine Modernization and Innovative Drug Development of Chinese Ministry of Education College of Pharmacy Jinan University No. 601 Huangpu Avenue West Guangzhou 510632 People's Republic of China
| | - Wei Zhou
- International Cooperative Laboratory of Traditional Chinese Medicine Modernization and Innovative Drug Development of Chinese Ministry of Education College of Pharmacy Jinan University No. 601 Huangpu Avenue West Guangzhou 510632 People's Republic of China
| | - Qian Cai
- International Cooperative Laboratory of Traditional Chinese Medicine Modernization and Innovative Drug Development of Chinese Ministry of Education College of Pharmacy Jinan University No. 601 Huangpu Avenue West Guangzhou 510632 People's Republic of China
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16
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Tian X, Zhang X, Hou X, Ren W, Li X, Zhao F, Tao H, Wang Y. Formal [4+1] Cyclization of
ortho
‐ or
para
‐Quinone Methides with 3‐Chlorooxindoles: Synthesis of 3,2′‐Tetrahydrofuryl Spirooxindoles. ASIAN J ORG CHEM 2021. [DOI: 10.1002/ajoc.202100363] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Xiaochen Tian
- Molecular Synthesis Center & Key Laboratory of Marine Drugs Chinese Ministry of Education School of Medicine and Pharmacy Ocean University of China 5 Yushan Road Qingdao 266003 P. R. China
| | - Xiaoli Zhang
- Molecular Synthesis Center & Key Laboratory of Marine Drugs Chinese Ministry of Education School of Medicine and Pharmacy Ocean University of China 5 Yushan Road Qingdao 266003 P. R. China
| | - Xiaohan Hou
- Molecular Synthesis Center & Key Laboratory of Marine Drugs Chinese Ministry of Education School of Medicine and Pharmacy Ocean University of China 5 Yushan Road Qingdao 266003 P. R. China
| | - Weiwu Ren
- Molecular Synthesis Center & Key Laboratory of Marine Drugs Chinese Ministry of Education School of Medicine and Pharmacy Ocean University of China 5 Yushan Road Qingdao 266003 P. R. China
- Laboratory for Marine Drugs and Bioproducts Qingdao National Laboratory for Marine Science and Technology (QNLM) Qingdao 266237 P. R. China
| | - Xiaoyang Li
- Molecular Synthesis Center & Key Laboratory of Marine Drugs Chinese Ministry of Education School of Medicine and Pharmacy Ocean University of China 5 Yushan Road Qingdao 266003 P. R. China
| | - Fei Zhao
- iHuman Institute ShanghaiTech University Ren Building 393 Middle Huaxia Rd, Pudong New District Shanghai 201210 P. R. China
| | - Houchao Tao
- iHuman Institute ShanghaiTech University Ren Building 393 Middle Huaxia Rd, Pudong New District Shanghai 201210 P. R. China
| | - Yang Wang
- Molecular Synthesis Center & Key Laboratory of Marine Drugs Chinese Ministry of Education School of Medicine and Pharmacy Ocean University of China 5 Yushan Road Qingdao 266003 P. R. China
- Laboratory for Marine Drugs and Bioproducts Qingdao National Laboratory for Marine Science and Technology (QNLM) Qingdao 266237 P. R. China
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17
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Gulotty EM, Rodriguez KX, Parker EE, Ashfeld BL. Oxyphosphonium Enolate Equilibria in a (4+1)-Cycloaddition Approach toward Quaternary C3-Spirooxindole Assembly. Chemistry 2021; 27:10349-10355. [PMID: 33861491 DOI: 10.1002/chem.202100355] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2021] [Indexed: 01/11/2023]
Abstract
An efficient and convergent (4+1)-cycloaddition strategy toward the construction of spirooxindole benzofurans that involves the intermediacy of an isatin-derived oxyphosphonium enolate is presented. Mechanistic investigations employing in situ NMR analysis of the reaction mixture revealed a correlation between phosphonium enolate structure and product distribution that was heavily influenced by the solvent and reaction temperature.
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Affiliation(s)
- Eva M Gulotty
- Department of Chemistry and Biochemistry, University of Notre Dame, Notre Dame, IN 46556, USA
| | - Kevin X Rodriguez
- Department of Chemistry and Biochemistry, University of Notre Dame, Notre Dame, IN 46556, USA
| | - Erin E Parker
- Department of Chemistry and Biochemistry, University of Notre Dame, Notre Dame, IN 46556, USA
| | - Brandon L Ashfeld
- Department of Chemistry and Biochemistry, University of Notre Dame, Notre Dame, IN 46556, USA
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18
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Lu Z, Zhang Q, Ke M, Hu S, Xiao X, Chen F. TfOH-Catalyzed [4 + 1] Annulation of p-Quinone Methides with α-Aryl Diazoacetates: Straightforward Access to Highly Functionalized 2,3-Dihydrobenzofurans. J Org Chem 2021; 86:7625-7635. [PMID: 33993694 DOI: 10.1021/acs.joc.1c00672] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
We have developed a methodology for the greatly efficient construction of significant 2,3-dihydrobenzofuran scaffolds bearing a quaternary carbon center at the C2 position by means of [4 + 1] annulation reactions between p-quinone methides and α-aryl diazoacetates as C1 synthons through organocatalysis by readily accessible TfOH catalyst under mild and transition metal-free conditions. This metal-free protocol furnishes an operationally simple and swift process for the free assembly of diverse highly functionalized 2,3-dihydrobenzofurans and also features broad substrate scope, excellent functional group compatibility, and environmental friendliness. Mechanistic investigation suggested that the reaction undergoes a rapid cascade protonation/intermolecular Michael addition/intramolecular substitution process.
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Affiliation(s)
- Zuolin Lu
- Institute of Pharmaceutical Science and Technology, Zhejiang University of Technology, Hangzhou 310014, P.R. China
| | - Qingchun Zhang
- Institute of Pharmaceutical Science and Technology, Zhejiang University of Technology, Hangzhou 310014, P.R. China
| | - Miaolin Ke
- Institute of Pharmaceutical Science and Technology, Zhejiang University of Technology, Hangzhou 310014, P.R. China
| | - Sha Hu
- Engineering Center of Catalysis and Synthesis for Chiral Molecules, Fudan University, Shanghai 200433, P.R. China
| | - Xiao Xiao
- Institute of Pharmaceutical Science and Technology, Zhejiang University of Technology, Hangzhou 310014, P.R. China
| | - Fener Chen
- Institute of Pharmaceutical Science and Technology, Zhejiang University of Technology, Hangzhou 310014, P.R. China.,Engineering Center of Catalysis and Synthesis for Chiral Molecules, Fudan University, Shanghai 200433, P.R. China.,Shanghai Engineering Center of Industrial Asymmetric Catalysis for Chiral Drugs, Shanghai 200433, China
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19
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Lin C, Xing Q, Xie H. A formal intermolecular [4 + 1] cycloaddition reaction of 3-chlorooxindole and o-quinone methides: a facile synthesis of spirocyclic oxindole scaffolds. RSC Adv 2021; 11:18576-18579. [PMID: 35480909 PMCID: PMC9033455 DOI: 10.1039/d1ra01086g] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2021] [Accepted: 05/08/2021] [Indexed: 12/11/2022] Open
Abstract
Herein, we developed an efficient and straightforward method for the rapid synthesis of spirocyclic oxindole scaffolds via the [4 + 1] cyclization reaction of 3-chlorooxindole with o-quinone methides (o-QMs), which were generated under mild conditions. The products could be obtained in excellent yields with numerous types of 3-chlorooxindole. This methodology features mild reaction conditions, high atom-economy and broad substrate scope. Herein, we developed an efficient and straightforward method for the rapid synthesis of spirocyclic oxindole scaffolds via the [4 + 1] cyclization reaction of 3-chlorooxindole with o-quinone methides (o-QMs), which were generated under mild conditions.![]()
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Affiliation(s)
- Chao Lin
- Yantai Key Laboratory of Nanomedicine & Advanced Preparations, Yantai Institute of Materia Medica Shandong 264000 China
| | - Qi Xing
- Yantai Key Laboratory of Nanomedicine & Advanced Preparations, Yantai Institute of Materia Medica Shandong 264000 China
| | - Honglei Xie
- Yantai Key Laboratory of Nanomedicine & Advanced Preparations, Yantai Institute of Materia Medica Shandong 264000 China
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20
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Biswas A, Ghosh A, Shankhdhar R, Chatterjee I. Squaramide Catalyzed Asymmetric Synthesis of Five‐ and Six‐Membered Rings. ASIAN J ORG CHEM 2021. [DOI: 10.1002/ajoc.202100181] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Anup Biswas
- Department of Chemistry Hooghly Women's College Hooghly West Bengal India
| | - Avisek Ghosh
- Department of Chemistry Indian Institute of Technology- Ropar India
| | - Rajat Shankhdhar
- Department of Chemistry Indian Institute of Technology- Ropar India
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21
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Ma Y, He X, Yang Q, Boucherif A, Xuan J. Recent Advances in Organocatalytic Asymmetric Cycloaddition Reactions Through
Ortho
‐Quinone Methide Scaffolds. ASIAN J ORG CHEM 2021. [DOI: 10.1002/ajoc.202100141] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Yu‐Hong Ma
- College of Materials and Chemical Engineering Key Laboratory of Inorganic Nonmetallic Crystalline and Energy Conversion Materials China Three Gorges University Yichang Hubei 443002 P. R. China
| | - Xiao‐Yu He
- College of Materials and Chemical Engineering Key Laboratory of Inorganic Nonmetallic Crystalline and Energy Conversion Materials China Three Gorges University Yichang Hubei 443002 P. R. China
| | - Qing‐Qing Yang
- College of Materials and Chemical Engineering Key Laboratory of Inorganic Nonmetallic Crystalline and Energy Conversion Materials China Three Gorges University Yichang Hubei 443002 P. R. China
| | - Amina Boucherif
- Department of biology Aboubeker Belkaïd University BP119 Tlemcen 13000 Algeria
| | - Jun Xuan
- College of Chemistry & Chemical Engineering Anhui Province Key Laboratory of Chemistry for Inorganic/Organic Hybrid Functionalized Materials Anhui University Anhui Hefei 230601 P. R. China
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22
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Qi SS, Yin H, Wang YF, Wang CJ, Han HT, Man TT, Xu DQ. Catalytic Asymmetric Conjugate Addition/Hydroalkoxylation Sequence: Expeditious Access to Enantioenriched Eight-Membered Cyclic Ether Derivatives. Org Lett 2021; 23:2471-2476. [PMID: 33733793 DOI: 10.1021/acs.orglett.1c00392] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
A sequential enantioselective conjugate addition/hydroalkoxylation between in situ generated ortho-quinomethanes and ynones by combining bifunctional squaramide and DBU catalysis has been developed. A variety of eight-membered cyclic ethers with two contiguous tertiary stereocenters were obtained in high yields with excellent stereoselectivities. This reaction not only provides a new strategy for constructing enantioenriched eight-membered cyclic ethers but also demonstrates the practicability of ynones as C4-syntons for the synthesis of chiral medium-membered rings.
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Affiliation(s)
- Suo-Suo Qi
- State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, Key Laboratory of Green Pesticides and Cleaner Production Technology of Zhejiang Province, Department of Green Chemistry and Technology, Zhejiang University of Technology, Hangzhou 310014, PR China
| | - Hao Yin
- State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, Key Laboratory of Green Pesticides and Cleaner Production Technology of Zhejiang Province, Department of Green Chemistry and Technology, Zhejiang University of Technology, Hangzhou 310014, PR China
| | - Yi-Feng Wang
- State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, Key Laboratory of Green Pesticides and Cleaner Production Technology of Zhejiang Province, Department of Green Chemistry and Technology, Zhejiang University of Technology, Hangzhou 310014, PR China
| | - Chao-Jie Wang
- State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, Key Laboratory of Green Pesticides and Cleaner Production Technology of Zhejiang Province, Department of Green Chemistry and Technology, Zhejiang University of Technology, Hangzhou 310014, PR China
| | - Hong-Te Han
- State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, Key Laboratory of Green Pesticides and Cleaner Production Technology of Zhejiang Province, Department of Green Chemistry and Technology, Zhejiang University of Technology, Hangzhou 310014, PR China
| | - Tong-Tong Man
- State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, Key Laboratory of Green Pesticides and Cleaner Production Technology of Zhejiang Province, Department of Green Chemistry and Technology, Zhejiang University of Technology, Hangzhou 310014, PR China
| | - Dan-Qian Xu
- State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, Key Laboratory of Green Pesticides and Cleaner Production Technology of Zhejiang Province, Department of Green Chemistry and Technology, Zhejiang University of Technology, Hangzhou 310014, PR China
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23
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Zhang H, Guan XK, Sun DY, Liu GF, Gao JG, Zhang GL, Zhang SQ. Asymmetric syntheses of spiro[benzofuro-cyclopenta[1,2-b]indole-indoline] scaffolds via consecutive cyclization. Chem Commun (Camb) 2021; 57:2313-2316. [PMID: 33533784 DOI: 10.1039/d0cc08083g] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
An efficient method to construct enantioenriched spiro[benzofuro-cyclopenta[1,2-b]indole-indoline] scaffolds via consecutive cyclization is described here. The new scaffolds possess five successive chiral stereogenic centers and two spiroheterocycles. A range of highly enantioenriched scaffolds has been obtained with up to 93% yield, 99% ee and >19 : 1 d.r. catalyzed by Brønsted acid catalysts.
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Affiliation(s)
- Heng Zhang
- College of Chemistry, Jilin University, 2699 Qianjin Street, Changchun 130012, People's Republic of China.
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24
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Wu Y, Cui B, Long Y, Han W, Wan N, Yuan W, Chen Y. Chiral Phosphoric Acid Catalyzed (4+1) Annulation of 3‐Diazooxindoles/4‐Diazooxisoquinolines with
para
‐Quinone Methides to Access Chiral Spiro[dihydrobenzofuran‐2,3′‐oxindoles/2,4′‐oxisoquinolines]. Adv Synth Catal 2021. [DOI: 10.1002/adsc.202001309] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- You‐Cai Wu
- Key Laboratory of Biocatalysis & Chiral Drug Synthesis of Guizhou Province School of Pharmacy Zunyi Medical University Zunyi 563000 People's Republic of China
- Key Laboratory of Basic Pharmacology of Ministry of Education and Joint International Research Laboratory of Ethnomedicine of Ministry of Education Zunyi Medical University Zunyi 563000 People's Republic of China
| | - Bao‐Dong Cui
- Key Laboratory of Biocatalysis & Chiral Drug Synthesis of Guizhou Province School of Pharmacy Zunyi Medical University Zunyi 563000 People's Republic of China
- Key Laboratory of Basic Pharmacology of Ministry of Education and Joint International Research Laboratory of Ethnomedicine of Ministry of Education Zunyi Medical University Zunyi 563000 People's Republic of China
| | - Yan Long
- Key Laboratory of Biocatalysis & Chiral Drug Synthesis of Guizhou Province School of Pharmacy Zunyi Medical University Zunyi 563000 People's Republic of China
- Key Laboratory of Basic Pharmacology of Ministry of Education and Joint International Research Laboratory of Ethnomedicine of Ministry of Education Zunyi Medical University Zunyi 563000 People's Republic of China
| | - Wen‐Yong Han
- Key Laboratory of Biocatalysis & Chiral Drug Synthesis of Guizhou Province School of Pharmacy Zunyi Medical University Zunyi 563000 People's Republic of China
- Key Laboratory of Basic Pharmacology of Ministry of Education and Joint International Research Laboratory of Ethnomedicine of Ministry of Education Zunyi Medical University Zunyi 563000 People's Republic of China
| | - Nan‐Wei Wan
- Key Laboratory of Biocatalysis & Chiral Drug Synthesis of Guizhou Province School of Pharmacy Zunyi Medical University Zunyi 563000 People's Republic of China
- Key Laboratory of Basic Pharmacology of Ministry of Education and Joint International Research Laboratory of Ethnomedicine of Ministry of Education Zunyi Medical University Zunyi 563000 People's Republic of China
| | - Wei‐Cheng Yuan
- National Engineering Research Center of Chiral Drugs Chengdu Institute of Organic Chemistry Chinese Academy of Sciences Chengdu 610041 People's Republic of China
| | - Yong‐Zheng Chen
- Key Laboratory of Biocatalysis & Chiral Drug Synthesis of Guizhou Province School of Pharmacy Zunyi Medical University Zunyi 563000 People's Republic of China
- Key Laboratory of Basic Pharmacology of Ministry of Education and Joint International Research Laboratory of Ethnomedicine of Ministry of Education Zunyi Medical University Zunyi 563000 People's Republic of China
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25
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Yuan WC, Lei CW, Zhao JQ, Wang ZH, You Y. Organocatalytic Asymmetric Cyclopropanation of 3-Acylcoumarins with 3-Halooxindoles: Access to Spirooxindole-cyclopropa[ c]coumarin Compounds. J Org Chem 2021; 86:2534-2544. [PMID: 33423494 DOI: 10.1021/acs.joc.0c02653] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
A highly diastereo- and enantioselective cyclopropanation reaction of 3-acylcoumarins with 3-halooxindoles catalyzed by an organocatalyst through a [2 + 1] Michael/intramolecular cyclization process was developed. This scenario provides a facile strategy to access spirooxindole-cyclopropa[c]coumarin compounds bearing three continuous stereocenters, including two vicinal quaternary all-carbon stereocenters with high to excellent diastereo- and enantioselectivities. The HRMS study revealed the vital importance of the ammonium ylide intermediate in the catalytic process.
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Affiliation(s)
- Wei-Cheng Yuan
- Institute for Advanced Study, Chengdu University, Chengdu 610106, China
| | - Chuan-Wen Lei
- School of Pharmacy, Guizhou University of Traditional Chinese Medicine, Guiyang, 550025, China
| | - Jian-Qiang Zhao
- Institute for Advanced Study, Chengdu University, Chengdu 610106, China
| | - Zhen-Hua Wang
- Institute for Advanced Study, Chengdu University, Chengdu 610106, China
| | - Yong You
- Institute for Advanced Study, Chengdu University, Chengdu 610106, China
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26
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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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27
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Penjarla TR, Kundarapu M, Rangan K, Bhattacharya A. Iodine assisted synthesis of CF 3 appended spirodihydrofuryl/cyclopropyl oxindoles by changing the active methylene sources. Org Biomol Chem 2020; 18:9623-9631. [PMID: 33206105 DOI: 10.1039/d0ob01903h] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
This paper describes the synthesis of two distinct types of CF3-containing spirooxindoles by varying the active methylene sources. The reaction was carried out in DMSO, assisted by molecular iodine and Na2CO3via systematic application of Michael reaction and iodine mediated cyclisation. With 5-methyl-2,4-dihydro-3H-pyrazol-3-one as the methylene source, the final products obtained were spirodihydrofuropyrazolyl oxindoles, whereas 1H-indene-1,3(2H)-dione as the methylene source gave the final compounds spirocyclopropyl oxindoles. Modest to good yields were obtained for both the spiro systems.
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Affiliation(s)
- Thirupathi Reddy Penjarla
- Department of Chemistry, Birla Institute of Technology and Science-Pilani (Hyderabad Campus), Hyderabad-500078, India.
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28
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Meng Z, Wang Q, Lu D, Yue T, Ai P, Liu H, Yang W, Zheng J. Domino Annulation Reaction of Sulfur Ylides and Morita–Baylis–Hillman Carbonates of Isatins: Synthesis of Oxospiro[bicyclo[3.1.0]hexane-6,3′-indolin] Scaffolds. J Org Chem 2020; 85:15026-15037. [DOI: 10.1021/acs.joc.0c01919] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Zhongrong Meng
- College of Chemistry, Nanchang University, 999 XuFu Road, Nangchang 330031, China
| | - Qiongqiong Wang
- School of Resources Environmental and Chemical Engineering, Nanchang University, 999 XuFu Road, Nangchang 330031, China
| | - Doudou Lu
- School of Resources Environmental and Chemical Engineering, Nanchang University, 999 XuFu Road, Nangchang 330031, China
| | - Tingting Yue
- School of Resources Environmental and Chemical Engineering, Nanchang University, 999 XuFu Road, Nangchang 330031, China
| | - Pu Ai
- School of Resources Environmental and Chemical Engineering, Nanchang University, 999 XuFu Road, Nangchang 330031, China
| | - Hua Liu
- School of Pharmacy, Jiangxi University of Traditional Chinese Medicine, 1688 Meiling Road, Wanli District, Nanchang 330004, China
| | - Weiran Yang
- School of Resources Environmental and Chemical Engineering, Nanchang University, 999 XuFu Road, Nangchang 330031, China
| | - Jing Zheng
- School of Resources Environmental and Chemical Engineering, Nanchang University, 999 XuFu Road, Nangchang 330031, China
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29
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Zhang JR, Jin HS, Sun J, Wang J, Zhao LM. Time-Economical Synthesis of Bis-Spiro Cyclopropanes via Cascade 1,6-Conjugate Addition/Dearomatization Reaction of para
-Quinone Methides with 3-Chlorooxindoles. European J Org Chem 2020. [DOI: 10.1002/ejoc.202000830] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Jing-Ru Zhang
- School of Chemistry and Materials Science; Jiangsu Normal University; 221116 Xuzhou Jiangsu China
| | - Hai-Shan Jin
- School of Chemistry and Materials Science; Jiangsu Normal University; 221116 Xuzhou Jiangsu China
| | - Jin Sun
- School of Chemistry and Materials Science; Jiangsu Normal University; 221116 Xuzhou Jiangsu China
| | - Jie Wang
- School of Chemistry and Materials Science; Jiangsu Normal University; 221116 Xuzhou Jiangsu China
| | - Li-Ming Zhao
- School of Chemistry and Materials Science; Jiangsu Normal University; 221116 Xuzhou Jiangsu China
- State Key Laboratory of Bioactive Substance and Function of Natural Medicines; Institute of Materia Medica; Chinese Academy of Medical Sciences and Peking Union Medical College; 100050 Beijing China
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30
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Ahlburg NL, Velarde AR, Kieber-Emmons MT, Jones PG, Werz DB. Substituted Benzothietes: Synthesis and a Quantum Chemical Investigation of Their Cycloreversion Properties. Org Lett 2020; 22:4255-4260. [PMID: 32401521 DOI: 10.1021/acs.orglett.0c01261] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A flexible synthesis for highly substituted benzothietes that does not require flash-vacuum pyrolysis was developed. This allows for the use of a number of functional groups and nonvaporizable molecules. Highly stabilized derivatives were isolated. The molecular orbital properties of various benzothietes were evaluated by density functional methods. The mechanism of the cycloreversion of the four-membered ring was compared to that of the oxygen-containing analogues.
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Affiliation(s)
| | - Andres R Velarde
- Department of Chemistry, University of Utah, Salt Lake City, Utah 84112-0850, United States
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31
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Tang Q, He X, Zhang J, Zhou T, Xie M, Li R, Zuo Y, Shang Y. Selective synthesis of 2‐(5‐oxo‐1‐arylhex‐1‐yn‐3‐yl)phenyl benzoates via FeCl
3
‐mediated cascade reactions of propargylamines with
β
‐enamino ketones. Appl Organomet Chem 2020. [DOI: 10.1002/aoc.5676] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Qiang Tang
- Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Laboratory of Molecule‐Based Materials (State Key Laboratory Cultivation Base), College of Chemistry and Materials Science Anhui Normal University Wuhu 241002 People's Republic of China
| | - Xinwei He
- Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Laboratory of Molecule‐Based Materials (State Key Laboratory Cultivation Base), College of Chemistry and Materials Science Anhui Normal University Wuhu 241002 People's Republic of China
| | - Jinxue Zhang
- Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Laboratory of Molecule‐Based Materials (State Key Laboratory Cultivation Base), College of Chemistry and Materials Science Anhui Normal University Wuhu 241002 People's Republic of China
| | - Tongtong Zhou
- Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Laboratory of Molecule‐Based Materials (State Key Laboratory Cultivation Base), College of Chemistry and Materials Science Anhui Normal University Wuhu 241002 People's Republic of China
| | - Mengqing Xie
- Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Laboratory of Molecule‐Based Materials (State Key Laboratory Cultivation Base), College of Chemistry and Materials Science Anhui Normal University Wuhu 241002 People's Republic of China
| | - Ruxue Li
- Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Laboratory of Molecule‐Based Materials (State Key Laboratory Cultivation Base), College of Chemistry and Materials Science Anhui Normal University Wuhu 241002 People's Republic of China
| | - Youpeng Zuo
- Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Laboratory of Molecule‐Based Materials (State Key Laboratory Cultivation Base), College of Chemistry and Materials Science Anhui Normal University Wuhu 241002 People's Republic of China
| | - Yongjia Shang
- Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Laboratory of Molecule‐Based Materials (State Key Laboratory Cultivation Base), College of Chemistry and Materials Science Anhui Normal University Wuhu 241002 People's Republic of China
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32
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Tu MS, Liu SJ, Zhong C, Zhang S, Zhang H, Zheng YL, Shi F. Diastereo- and Enantioselective Construction of Biologically Important Chiral 1,3-Dioxolochroman Frameworks via Catalytic Asymmetric [4+2] Cycloaddition. J Org Chem 2020; 85:5403-5415. [PMID: 32212612 DOI: 10.1021/acs.joc.0c00119] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
A diastereo- and enantioselective construction of biologically important chiral 1,3-dioxolochroman frameworks has been established via chiral phosphoric acid (CPA)-catalyzed asymmetric [4+2] cycloaddition of ortho-quinone methides with 3-methyl-2-vinylindoles. By using this approach, a series of indole-based chiral 1,3-dioxolochromans were synthesized with structural diversity in generally good yields, excellent diastereoselectivities and high enantioselectivities (up to 98% yields, >95:5 dr, 97% ee). The evaluation on the cytotoxic activity of some selected products indicated that this class of chiral 1,3-dioxolochroman derivatives had some extent of anti-cancer activity. This reaction not only provides an efficient synthetic method for accessing chiral 1,3-dioxolochroman derivatives with structural diversity and optical purity but also will enrich the research contents of catalytic asymmetric [4+2] cycloadditions involving ortho-quinone methides. In addition, the bioassay of these compounds will cast a light on discovering useful bioactivities of chiral 1,3-dioxolochroman derivatives, which will be helpful for finding lead compounds.
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Affiliation(s)
- Man-Su Tu
- School of Life Sciences, College of Health Sciences, Jiangsu Normal University, Xuzhou 221116, China
| | - Si-Jia Liu
- School of Chemistry and Materials Science, Jiangsu Normal University, Xuzhou 221116, China
| | - Chen Zhong
- School of Chemistry and Materials Science, Jiangsu Normal University, Xuzhou 221116, China
| | - Shu Zhang
- Department of Radiotherapy, The First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, China
| | - Huiwen Zhang
- Department of Radiotherapy, The First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, China
| | - Yuan-Lin Zheng
- School of Life Sciences, College of Health Sciences, Jiangsu Normal University, Xuzhou 221116, China
| | - Feng Shi
- School of Chemistry and Materials Science, Jiangsu Normal University, Xuzhou 221116, China
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33
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An X, Du J, Jia Z, Zhang Q, Yu K, Zhang Y, Zhao X, Fang R, Fan C. Asymmetric Catalytic [4+5] Annulation of
ortho
‐Quinone Methides with Vinylethylene Carbonates and its Extension to Stereoselective Tandem Rearrangement. Chemistry 2020; 26:3803-3809. [DOI: 10.1002/chem.201904903] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2019] [Indexed: 12/21/2022]
Affiliation(s)
- Xian‐Tao An
- State Key Laboratory of Applied Organic ChemistryCollege of Chemistry and Chemical EngineeringLanzhou University 222 Tianshui Nanlu Lanzhou 730000 China
| | - Ji‐Yuan Du
- College of Chemistry and Chemical EngineeringLiaocheng University 1 Hunan Road Liaocheng 252059 China
| | - Zhi‐Long Jia
- State Key Laboratory of Applied Organic ChemistryCollege of Chemistry and Chemical EngineeringLanzhou University 222 Tianshui Nanlu Lanzhou 730000 China
| | - Qing Zhang
- State Key Laboratory of Applied Organic ChemistryCollege of Chemistry and Chemical EngineeringLanzhou University 222 Tianshui Nanlu Lanzhou 730000 China
| | - Ke‐Yin Yu
- State Key Laboratory of Applied Organic ChemistryCollege of Chemistry and Chemical EngineeringLanzhou University 222 Tianshui Nanlu Lanzhou 730000 China
| | - Yi‐Zhou Zhang
- State Key Laboratory of Applied Organic ChemistryCollege of Chemistry and Chemical EngineeringLanzhou University 222 Tianshui Nanlu Lanzhou 730000 China
| | - Xian‐He Zhao
- State Key Laboratory of Applied Organic ChemistryCollege of Chemistry and Chemical EngineeringLanzhou University 222 Tianshui Nanlu Lanzhou 730000 China
| | - Ran Fang
- State Key Laboratory of Applied Organic ChemistryCollege of Chemistry and Chemical EngineeringLanzhou University 222 Tianshui Nanlu Lanzhou 730000 China
| | - Chun‐An Fan
- State Key Laboratory of Applied Organic ChemistryCollege of Chemistry and Chemical EngineeringLanzhou University 222 Tianshui Nanlu Lanzhou 730000 China
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34
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Hu F, Chen Z, Tan Y, Xu D, Huang S, Jia S, Gong X, Qin W, Yan H. Organocatalytic Enantioselective γ-Elimination: Applications in the Preparation of Chiral Peroxides and Epoxides. Org Lett 2020; 22:1934-1940. [PMID: 32057244 DOI: 10.1021/acs.orglett.0c00295] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
An organocatalyzed enantioselective γ-elimination process has been achieved and applied in the kinetic resolution of peroxides to access chiral peroxides and epoxides. The reaction provided a pathway for the preparation of two useful synthetic and biologically important structural motifs through a single-step reaction. A range of substrates has been resolved with a selectivity factor up to 63. The obtained enantioenriched peroxides and epoxides allowed a series of transformations with retained optical purities.
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Affiliation(s)
- Fangli Hu
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research, School of Pharmaceutical Sciences, Chongqing University, Chongqing 401331, P. R. China
| | - Zhili Chen
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research, School of Pharmaceutical Sciences, Chongqing University, Chongqing 401331, P. R. China
| | - Yu Tan
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research, School of Pharmaceutical Sciences, Chongqing University, Chongqing 401331, P. R. China
| | - Da Xu
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research, School of Pharmaceutical Sciences, Chongqing University, Chongqing 401331, P. R. China
| | - Shengli Huang
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research, School of Pharmaceutical Sciences, Chongqing University, Chongqing 401331, P. R. China
| | - Shiqi Jia
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research, School of Pharmaceutical Sciences, Chongqing University, Chongqing 401331, P. R. China
| | - Xiangnan Gong
- Analytical and Testing Center of Chongqing University, Chongqing University, Chongqing 401331, P. R. China
| | - Wenling Qin
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research, School of Pharmaceutical Sciences, Chongqing University, Chongqing 401331, P. R. China
| | - Hailong Yan
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research, School of Pharmaceutical Sciences, Chongqing University, Chongqing 401331, P. R. China
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35
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Yu X, Lan W, Li J, Bai H, Qin Z, Fu B. Enantioselective one-pot synthesis of 4 H-chromene derivatives catalyzed by a chiral Ni( ii) complex. RSC Adv 2020; 10:44437-44441. [PMID: 35517147 PMCID: PMC9058437 DOI: 10.1039/d0ra08906k] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2020] [Accepted: 11/16/2020] [Indexed: 12/15/2022] Open
Abstract
A Ni(ii)–bis(oxazoline) complex and p-TSOH are used to form enantioenriched 4H-chromenes from ortho-quinone methides (o-QMs) and dicarbonyls, providing the desired products in up to 95% ee. The method is compatible with various β-ketoester substrates, and the products obtained could be converted into biologically active 4H-chromene derivatives. A Ni(ii)–bis(oxazoline) complex and p-TSOH are used to form enantioenriched 4H-chromenes from ortho-quinone methides (o-QMs) and dicarbonyls, providing the desired products in up to 95% ee.![]()
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Affiliation(s)
- Xuan Yu
- Department of Applied Chemistry
- China Agricultural University
- Beijing 100193
- People's Repubic of China
| | - Wenjie Lan
- Department of Applied Chemistry
- China Agricultural University
- Beijing 100193
- People's Repubic of China
| | - Jiaqi Li
- Department of Applied Chemistry
- China Agricultural University
- Beijing 100193
- People's Repubic of China
| | - Hui Bai
- Department of Applied Chemistry
- China Agricultural University
- Beijing 100193
- People's Repubic of China
| | - Zhaohai Qin
- Department of Applied Chemistry
- China Agricultural University
- Beijing 100193
- People's Repubic of China
| | - Bin Fu
- Department of Applied Chemistry
- China Agricultural University
- Beijing 100193
- People's Repubic of China
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36
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Wu SF, Tu MS, Hang QQ, Zhang S, Ding H, Zhang YC, Shi F. Construction of chiral chroman scaffolds via catalytic asymmetric (4 + 2) cyclizations of para-quinone methide derivatives with 3-vinylindoles. Org Biomol Chem 2020; 18:5388-5399. [DOI: 10.1039/d0ob01049a] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
The title reaction has been established in the presence of chiral phosphoric acid, affording chiral chroman derivatives bearing an indole moiety in high yields and with moderate to good stereoselectivities.
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Affiliation(s)
- Shu-Fang Wu
- School of Chemistry and Materials Science
- the Key Laboratory of Biotechnology for Medicinal Plants of Jiangsu Province
- Jiangsu Normal University
- Xuzhou
- China
| | - Man-Su Tu
- School of Chemistry and Materials Science
- the Key Laboratory of Biotechnology for Medicinal Plants of Jiangsu Province
- Jiangsu Normal University
- Xuzhou
- China
| | - Qing-Qing Hang
- School of Chemistry and Materials Science
- the Key Laboratory of Biotechnology for Medicinal Plants of Jiangsu Province
- Jiangsu Normal University
- Xuzhou
- China
| | - Shu Zhang
- Department of Geriatrics
- the First Affiliated Hospital of Nanjing Medical University
- Nanjing
- 210029
- China
| | - Haixia Ding
- Department of Geriatrics
- the First Affiliated Hospital of Nanjing Medical University
- Nanjing
- 210029
- China
| | - Yu-Chen Zhang
- School of Chemistry and Materials Science
- the Key Laboratory of Biotechnology for Medicinal Plants of Jiangsu Province
- Jiangsu Normal University
- Xuzhou
- China
| | - Feng Shi
- School of Chemistry and Materials Science
- the Key Laboratory of Biotechnology for Medicinal Plants of Jiangsu Province
- Jiangsu Normal University
- Xuzhou
- China
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37
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Wen JB, Du DM. Squaramide-catalysed asymmetric cascade reactions of 2,3-dioxopyrrolidines with 3-chlorooxindoles. Org Biomol Chem 2020; 18:1647-1656. [DOI: 10.1039/c9ob02663k] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An efficient squaramide-catalysed asymmetric Michael addition/cyclization cascade reaction of 3-chlorooxindoles with 2,3-dioxopyrrolidines produced the corresponding chiral spiro-compounds in high yields with excellent stereoselectivities.
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Affiliation(s)
- Jiang-Bo Wen
- School of Chemistry and Chemical Engineering
- Beijing Institute of Technology
- Beijing 100081
- P. R. China
| | - Da-Ming Du
- School of Chemistry and Chemical Engineering
- Beijing Institute of Technology
- Beijing 100081
- P. R. China
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38
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Xia C, Wang DC, Qu GR, Guo HM. Palladium-catalyzed enantioselective [5 + 4] annulation of ortho-quinone methides and vinylethylene carbonates. Org Chem Front 2020. [DOI: 10.1039/d0qo00128g] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Highly enantioselective [5 + 4] annulations of ortho-quinone methides with vinylethylene carbonates are enabled by asymmetric palladium catalysis for the synthesis of chiral nine-membered benzo-heterocycles.
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Affiliation(s)
- Chao Xia
- School of Environment
- Henan Normal University
- Xinxiang
- China
| | - Dong-Chao Wang
- Henan Key Laboratory of Organic Functional Molecules and Drugs Innovation
- Key Laboratory of Green Chemical Media and Reactions
- Ministry of Education
- Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals
- School of Chemistry and Chemical Engineering
| | - Gui-Rong Qu
- Henan Key Laboratory of Organic Functional Molecules and Drugs Innovation
- Key Laboratory of Green Chemical Media and Reactions
- Ministry of Education
- Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals
- School of Chemistry and Chemical Engineering
| | - Hai-Ming Guo
- School of Environment
- Henan Normal University
- Xinxiang
- China
- Henan Key Laboratory of Organic Functional Molecules and Drugs Innovation
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39
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Shi H, Wang L, Li SS, Liu Y, Xu L. Divergent syntheses of spirooxindoles from oxindole-embedded four-membered synthon via cycloaddition reactions. Org Chem Front 2020. [DOI: 10.1039/d0qo00038h] [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
The construction of five and six membered heterocycle fused spirooxindoles was achieved via the [4 + 1] and formal [4 + 2] cycloadditions between our rationally designed four-membered synthons and pyridinium methylides and α-bromoacetophenones, respectively.
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Affiliation(s)
- Hongjin Shi
- College of Chemistry and Pharmaceutical Sciences
- Qingdao Agricultural University
- Qingdao 266109
- China
| | - Liang Wang
- College of Chemistry and Pharmaceutical Sciences
- Qingdao Agricultural University
- Qingdao 266109
- China
- College of Chemistry and Molecular Engineering
| | - Shuai-Shuai Li
- College of Chemistry and Pharmaceutical Sciences
- Qingdao Agricultural University
- Qingdao 266109
- China
- College of Chemistry and Molecular Engineering
| | - Yongjun Liu
- College of Chemistry and Molecular Engineering
- Qingdao University of Science and Technology
- Qingdao 266042
- P. R. China
| | - Lubin Xu
- College of Chemistry and Pharmaceutical Sciences
- Qingdao Agricultural University
- Qingdao 266109
- China
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40
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Song YX, Du DM. Asymmetric synthesis of spirooxindole-fused spirothiazolones via squaramide-catalysed reaction of 3-chlorooxindoles with 5-alkenyl thiazolones. Org Biomol Chem 2019; 17:5375-5380. [PMID: 31106322 DOI: 10.1039/c9ob00998a] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
An efficient and practical organocatalyzed asymmetric formal [2 + 1] cycloaddition of 3-chlorooxindoles with 5-alkenyl thiazolones by using hydroquinine-derived squaramide as the catalyst has been developed. Under mild conditions, a broad range of spirooxindole-fused spirothiazolones bearing three adjacent stereogenic centers including two vicinal spiro quaternary chiral centers were obtained in high yields (up to 99% yield) with excellent diastereoselectivities (up to >99 : 1 dr) and enantioselectivities (up to 99% ee).
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Affiliation(s)
- Yong-Xing Song
- School of Chemistry and Chemical Engineering, Beijing Institute of Technology, 5 South Zhongguancun Street, Beijing 100081, P. R. China.
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41
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Chavan LN, Mainkar PS, Chandrasekhar S. Organocatalytic Asymmetric Synthesis of Tetrahydrofuran and 1,2-Dihydrobenzofuran Scaffolds. European J Org Chem 2019. [DOI: 10.1002/ejoc.201901067] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Lahu N. Chavan
- Department of Organic Synthesis and Process Chemistry; CSIR-Indian Institute of Chemical Technology; 500007 Hyderabad India
- Academy of Scientific and Innovative Research (AcSIR); 201 002 Uttar Pradesh Ghaziabad India
| | - Prathama S. Mainkar
- Department of Organic Synthesis and Process Chemistry; CSIR-Indian Institute of Chemical Technology; 500007 Hyderabad India
- Academy of Scientific and Innovative Research (AcSIR); 201 002 Uttar Pradesh Ghaziabad India
| | - S. Chandrasekhar
- Department of Organic Synthesis and Process Chemistry; CSIR-Indian Institute of Chemical Technology; 500007 Hyderabad India
- Academy of Scientific and Innovative Research (AcSIR); 201 002 Uttar Pradesh Ghaziabad India
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42
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Mukhopadhyay S, Gharui C, Pan SC. Applications of Bifunctional Organocatalysts on
ortho
‐Quinone Methides. ASIAN J ORG CHEM 2019. [DOI: 10.1002/ajoc.201900466] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Affiliation(s)
| | - Chandan Gharui
- Department of ChemistryIndian Institute of Technology Guwahati Assam 781039 India
| | - Subhas Chandra Pan
- Department of ChemistryIndian Institute of Technology Guwahati Assam 781039 India
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43
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Zhang J, Jin H, Wang R, Zhao L. Synthesis of 2,4‐Diaryl‐1,3‐benzoxazines via FeCl
3
‐Catalyzed Annulation of
ortho
‐Hydroxyphenyl‐Substituted
para
‐Quinone Methides with Imidates. Adv Synth Catal 2019. [DOI: 10.1002/adsc.201900842] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Jing‐Ru Zhang
- School of Chemistry and Materials ScienceJiangsu Normal University Xuzhou 221116, Jiangsu People's Republic of China
| | - Hai‐Shan Jin
- School of Chemistry and Materials ScienceJiangsu Normal University Xuzhou 221116, Jiangsu People's Republic of China
| | - Ru‐Bing Wang
- State Key Laboratory of Bioactive Substance and Function of Natural Medicines, Institute of Materia MedicaChinese Academy of Medical Sciences and Peking Union Medical College Beijing 100050 People's Republic of China
| | - Li‐Ming Zhao
- School of Chemistry and Materials ScienceJiangsu Normal University Xuzhou 221116, Jiangsu People's Republic of China
- State Key Laboratory of Bioactive Substance and Function of Natural Medicines, Institute of Materia MedicaChinese Academy of Medical Sciences and Peking Union Medical College Beijing 100050 People's Republic of China
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44
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Wang D, Lu X, Sun S, Yu H, Su H, Wu Y, Zhong F. Unified and Benign Synthesis of Spirooxindoles via Bifunctional and Recyclable Iodide-Salt-Catalyzed Oxidative Coupling in Water. European J Org Chem 2019. [DOI: 10.1002/ejoc.201900751] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Affiliation(s)
- Dangui Wang
- Key laboratory of Material Chemistry for Energy Conversion and Storage; Ministry of Education; Hubei Key Laboratory of Bioinorganic Chemistry & Materia Medica; School of Chemistry and Chemical Engineering; Huazhong University of Science and Technology (HUST); 1037 Luoyu Road 430074 Wuhan China
- Shenzhen Huazhong University of Science and Technology Research Institute; 518000 Shenzhen PR China
| | - Xunbo Lu
- Key laboratory of Material Chemistry for Energy Conversion and Storage; Ministry of Education; Hubei Key Laboratory of Bioinorganic Chemistry & Materia Medica; School of Chemistry and Chemical Engineering; Huazhong University of Science and Technology (HUST); 1037 Luoyu Road 430074 Wuhan China
| | - Shaohan Sun
- Key laboratory of Material Chemistry for Energy Conversion and Storage; Ministry of Education; Hubei Key Laboratory of Bioinorganic Chemistry & Materia Medica; School of Chemistry and Chemical Engineering; Huazhong University of Science and Technology (HUST); 1037 Luoyu Road 430074 Wuhan China
| | - Huaibin Yu
- Key laboratory of Material Chemistry for Energy Conversion and Storage; Ministry of Education; Hubei Key Laboratory of Bioinorganic Chemistry & Materia Medica; School of Chemistry and Chemical Engineering; Huazhong University of Science and Technology (HUST); 1037 Luoyu Road 430074 Wuhan China
| | - Huimin Su
- Key laboratory of Material Chemistry for Energy Conversion and Storage; Ministry of Education; Hubei Key Laboratory of Bioinorganic Chemistry & Materia Medica; School of Chemistry and Chemical Engineering; Huazhong University of Science and Technology (HUST); 1037 Luoyu Road 430074 Wuhan China
| | - Yuzhou Wu
- Key laboratory of Material Chemistry for Energy Conversion and Storage; Ministry of Education; Hubei Key Laboratory of Bioinorganic Chemistry & Materia Medica; School of Chemistry and Chemical Engineering; Huazhong University of Science and Technology (HUST); 1037 Luoyu Road 430074 Wuhan China
| | - Fangrui Zhong
- Key laboratory of Material Chemistry for Energy Conversion and Storage; Ministry of Education; Hubei Key Laboratory of Bioinorganic Chemistry & Materia Medica; School of Chemistry and Chemical Engineering; Huazhong University of Science and Technology (HUST); 1037 Luoyu Road 430074 Wuhan China
- Shenzhen Huazhong University of Science and Technology Research Institute; 518000 Shenzhen PR China
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45
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Jiang X, Yang L, Yang W, Zhu Y, Fang L, Yu C. Controllable synthesis of 3-chloro- and 3,3-dichloro-2-oxindoles via hypervalent iodine-mediated chlorooxidation. Org Biomol Chem 2019; 17:6920-6924. [PMID: 31282524 DOI: 10.1039/c9ob01173k] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
An efficient and controllable protocol for the synthesis of 3-chloro- and 3,3-dichloro-2-oxindoles has been developed via hypervalent iodine-promoted chlorooxidation. By using two equivalents of 1-chloro-1,2-benziodoxol-3-(1H)-one, a wide range of indoles were transformed into 3-chloro-2-oxindoles in DMF/CF3CO2H/H2O at room temperature with good yields. As far as we know, this is the first report on the selective C-2 oxidation and C-3 monochlorination of simple indoles. In addition, three equivalents of the same hypervalent iodine afforded 3,3-dichloro-2-oxindoles in up to 99% yields under optimized conditions (dioxane/H2O, 80 °C). The method features mild reaction conditions, the widespread availability of the substrates, and good functional group tolerance.
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Affiliation(s)
- Xinpeng Jiang
- College of Pharmaceutical Sciences, Zhejiang University of Technology, Hangzhou, P.R. China.
| | - Liechao Yang
- College of Pharmaceutical Sciences, Zhejiang University of Technology, Hangzhou, P.R. China.
| | - Wenlong Yang
- College of Pharmaceutical Sciences, Zhejiang University of Technology, Hangzhou, P.R. China.
| | - Yu Zhu
- College of Pharmaceutical Sciences, Zhejiang University of Technology, Hangzhou, P.R. China.
| | - Liyun Fang
- College of Pharmaceutical Sciences, Zhejiang University of Technology, Hangzhou, P.R. China.
| | - Chuanming Yu
- College of Pharmaceutical Sciences, Zhejiang University of Technology, Hangzhou, P.R. China.
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46
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Zielke K, Kováč O, Winter M, Pospíšil J, Waser M. Enantioselective Catalytic [4+1]-Cyclization of ortho-Hydroxy-para-Quinone Methides with Allenoates. Chemistry 2019; 25:8163-8168. [PMID: 31020717 PMCID: PMC6618147 DOI: 10.1002/chem.201901784] [Citation(s) in RCA: 41] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2019] [Indexed: 12/25/2022]
Abstract
The first highly asymmetric catalytic synthesis of densely functionalized dihydrobenzofurans is reported, which starts from ortho-hydroxy-containing para-quinone methides. The reaction relies on an unprecedented formal [4+1]-annulation of these quinone methides with allenoates in the presence of a commercially available chiral phosphine catalyst. The chiral dihydrobenzofurans were obtained as single diastereomers in yields up to 90 % and with enantiomeric ratios up to 95:5.
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Affiliation(s)
- Katharina Zielke
- Institute of Organic ChemistryJohannes Kepler University LinzAltenbergerstraße 694040LinzAustria
| | - Ondřej Kováč
- Department of Organic ChemistryFaculty of SciencePalacky Universitytř. 17. listopadu 1192/12771 46OlomoucCzech Republic
| | - Michael Winter
- Institute of Organic ChemistryJohannes Kepler University LinzAltenbergerstraße 694040LinzAustria
| | - Jiří Pospíšil
- Department of Organic ChemistryFaculty of SciencePalacky Universitytř. 17. listopadu 1192/12771 46OlomoucCzech Republic
- Laboratory of Growth RegulatorsThe Czech Academy of Sciences, Institute of Experimental Botany & Palacký UniversityŠlechtitelů 2778371OlomoucCzech Republic
| | - Mario Waser
- Institute of Organic ChemistryJohannes Kepler University LinzAltenbergerstraße 694040LinzAustria
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47
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Li X, Yan J, Qin J, Lin S, Chen W, Zhan R, Huang H. Enantioselective Synthesis of Benzofuran-Fused N-Heterocycles via Chiral Squaramide Catalyzed [4 + 2] Cyclization of Azadienes with Azlactones. J Org Chem 2019; 84:8035-8045. [PMID: 31188599 DOI: 10.1021/acs.joc.9b00911] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
An asymmetric cyclization reaction of azadienes and azlactones was investigated by employing a Cinchona squaramide catalyst, which could afford a series of benzofuran-fused six-membered heterocycles containing a α,α-disubstituted amino acid unit in a highly diastereoselective (>20:1 dr) and enantioselective (up to 99% ee) manner with good to excellent yields (up to 92%). A plausible pathway was proposed to explain the reaction process.
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Affiliation(s)
- Xiaoping Li
- Research Center of Chinese Herbal Resource Science and Engineering, Guangzhou University of Chinese Medicine, Key Laboratory of Chinese Medicinal Resource from Lingnan (Guangzhou University of Chinese Medicine), Ministry of Education , Guangzhou , 510006 , China
| | - Juzhang Yan
- Research Center of Chinese Herbal Resource Science and Engineering, Guangzhou University of Chinese Medicine, Key Laboratory of Chinese Medicinal Resource from Lingnan (Guangzhou University of Chinese Medicine), Ministry of Education , Guangzhou , 510006 , China
| | - Jialiang Qin
- Research Center of Chinese Herbal Resource Science and Engineering, Guangzhou University of Chinese Medicine, Key Laboratory of Chinese Medicinal Resource from Lingnan (Guangzhou University of Chinese Medicine), Ministry of Education , Guangzhou , 510006 , China
| | - Shilin Lin
- Research Center of Chinese Herbal Resource Science and Engineering, Guangzhou University of Chinese Medicine, Key Laboratory of Chinese Medicinal Resource from Lingnan (Guangzhou University of Chinese Medicine), Ministry of Education , Guangzhou , 510006 , China
| | - Weiwen Chen
- Research Center of Chinese Herbal Resource Science and Engineering, Guangzhou University of Chinese Medicine, Key Laboratory of Chinese Medicinal Resource from Lingnan (Guangzhou University of Chinese Medicine), Ministry of Education , Guangzhou , 510006 , China
| | - Ruoting Zhan
- Research Center of Chinese Herbal Resource Science and Engineering, Guangzhou University of Chinese Medicine, Key Laboratory of Chinese Medicinal Resource from Lingnan (Guangzhou University of Chinese Medicine), Ministry of Education , Guangzhou , 510006 , China
| | - Huicai Huang
- Research Center of Chinese Herbal Resource Science and Engineering, Guangzhou University of Chinese Medicine, Key Laboratory of Chinese Medicinal Resource from Lingnan (Guangzhou University of Chinese Medicine), Ministry of Education , Guangzhou , 510006 , China
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48
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Ukis R, Schneider C. Brønsted Acid-Catalyzed, Diastereo- and Enantioselective, Intramolecular Oxa-Diels-Alder Reaction of ortho-Quinone Methides and Unactivated Dienophiles. J Org Chem 2019; 84:7175-7188. [PMID: 31117571 DOI: 10.1021/acs.joc.9b00860] [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 stereoselective, phosphoric acid-catalyzed synthesis of dihydrochromenochromenes has been developed using transient ortho-quinone methides ( o-QMs). Three contiguous stereogenic centers were formed with excellent yields, partially as single diastereomers and with moderate to excellent enantioselectivity. This intramolecular hetero-Diels-Alder reaction features unactivated dienophiles and o-QM precursors tethered by a simple phenoxy linker and furnishes cycloadducts with a prominent structural motif found in many natural products. Through an appropriate choice of dienophile configuration and backbone substitution either exo- or endo-stereoisomers were formed selectively with up to a 96:04 enantiomeric ratio.
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Affiliation(s)
- Rostyslav Ukis
- Institute of Organic Chemistry , University of Leipzig , Johannisallee 29 , 04103 Leipzig , Germany
| | - Christoph Schneider
- Institute of Organic Chemistry , University of Leipzig , Johannisallee 29 , 04103 Leipzig , Germany
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49
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Rahimi F, Bayat M, Hosseini H. Synthesis of spiroimidazopyridineoxindole, spiropyridopyrimidineoxindole and spiropyridodiazepineoxindole derivatives based on heterocyclic ketene aminals via a four-component reaction. RSC Adv 2019; 9:16384-16389. [PMID: 35516376 PMCID: PMC9064345 DOI: 10.1039/c8ra10379h] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2018] [Accepted: 05/13/2019] [Indexed: 11/21/2022] Open
Abstract
Here, we have described the synthesis of novel spiropyridineoxindole derivatives containing a pyridone ring via a four-component reaction between various diamines, 1,1-bis(methylthio)-2-nitroethylene, isatin derivatives and Meldrum's acid in the presence of p-toluenesulfonic acid. This protocol has some advantages such as the availability of starting materials, good yields, facile separation of products, the use of ethanol as an environmentally benign solvent and easy formation of three new bonds in one operation.
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Affiliation(s)
- Fatemeh Rahimi
- Department of Chemistry, Faculty of Science, Imam Khomeini International University Qazvin Iran +98 28 33780040
| | - Mohammad Bayat
- Department of Chemistry, Faculty of Science, Imam Khomeini International University Qazvin Iran +98 28 33780040
| | - Hajar Hosseini
- Department of Chemistry, Faculty of Science, Imam Khomeini International University Qazvin Iran +98 28 33780040
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50
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Kang JW, Li X, Chen FY, Luo Y, Zhang SC, Kang B, Peng C, Tian X, Han B. Protecting group-directed annulations of tetra-substituted oxindole olefins and sulfur ylides: regio- and chemoselective synthesis of cyclopropane- and dihydrofuran-fused spirooxindoles. RSC Adv 2019; 9:12255-12264. [PMID: 35515867 PMCID: PMC9063500 DOI: 10.1039/c9ra02192b] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2019] [Accepted: 04/10/2019] [Indexed: 12/21/2022] Open
Abstract
Protecting group-controlled annulations of tetra-substituted oxindole olefins and sulfur ylides have been achieved for the synthesis of multifunctional cyclopropane- and dihydrofuran-fused spirooxindoles. Under precise annulation regulation, a variety of cyclopropane- and dihydrofuran-fused spirooxindoles containing vicinal quaternary carbon centers were produced in up to 90% yield with up to 20 : 1 dr. This reaction demonstrates high regio-, chemo- and diastereoselectivity, broad functional group tolerance and gram-scale capacity.
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Affiliation(s)
- Jing-Wen Kang
- State Key Laboratory Breeding Base of Systematic Research Development and Utilization of Chinese Medicine Resources School of Pharmacy, Chengdu University of Traditional Chinese Medicine Chengdu 611137 P. R. China
| | - Xiang Li
- State Key Laboratory Breeding Base of Systematic Research Development and Utilization of Chinese Medicine Resources School of Pharmacy, Chengdu University of Traditional Chinese Medicine Chengdu 611137 P. R. China
| | - Fei-Yu Chen
- State Key Laboratory Breeding Base of Systematic Research Development and Utilization of Chinese Medicine Resources School of Pharmacy, Chengdu University of Traditional Chinese Medicine Chengdu 611137 P. R. China
| | - Yuan Luo
- State Key Laboratory Breeding Base of Systematic Research Development and Utilization of Chinese Medicine Resources School of Pharmacy, Chengdu University of Traditional Chinese Medicine Chengdu 611137 P. R. China
| | - Shu-Cang Zhang
- State Key Laboratory Breeding Base of Systematic Research Development and Utilization of Chinese Medicine Resources School of Pharmacy, Chengdu University of Traditional Chinese Medicine Chengdu 611137 P. R. China
| | - Bin Kang
- State Key Laboratory Breeding Base of Systematic Research Development and Utilization of Chinese Medicine Resources School of Pharmacy, Chengdu University of Traditional Chinese Medicine Chengdu 611137 P. R. China
| | - Cheng Peng
- State Key Laboratory Breeding Base of Systematic Research Development and Utilization of Chinese Medicine Resources School of Pharmacy, Chengdu University of Traditional Chinese Medicine Chengdu 611137 P. R. China
| | - Xu Tian
- Key Laboratory of Molecular Target & Clinical Pharmacology and the State Key Laboratory of Respiratory Disease, School of Pharmaceutical Sciences & the Fifth Affiliated Hospital, Guangzhou Medical University Guangzhou 511436 P. R. China
| | - Bo Han
- State Key Laboratory Breeding Base of Systematic Research Development and Utilization of Chinese Medicine Resources School of Pharmacy, Chengdu University of Traditional Chinese Medicine Chengdu 611137 P. R. China
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