1
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Ushakov P, Ioffe S, Sukhorukov AY. Recent advances in the application of ylide-like species in [4+1]-annulation reactions: an update review. Org Chem Front 2022. [DOI: 10.1039/d2qo00698g] [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
In this review, advances in [4+1]‐annulation reactions involving sulfonium, sulfoxonium and ammonium ylides, as well as diazo compounds and carbenes are summarized over the last 6 years. Newly emerged methods...
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2
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Hellwig PS, Barcellos AM, Furst CG, Alberto EE, Perin G. Oxyselenocyclization of 2‐Allylphenols for the Synthesis of 2,3‐Dihydrobenzofuran Selenides. ChemistrySelect 2021. [DOI: 10.1002/slct.202104072] [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)
- Paola S. Hellwig
- Laboratório de Síntese Orgânica Limpa – LASOL CCQFA Universidade Federal de Pelotas – UFPel P.O. Box 354 96010-900 Pelotas RS Brazil
| | - Angelita M. Barcellos
- Laboratório de Síntese Orgânica Limpa – LASOL CCQFA Universidade Federal de Pelotas – UFPel P.O. Box 354 96010-900 Pelotas RS Brazil
| | - Carolina G. Furst
- Department of Chemistry Universidade Federal de Minas Gerais - UFMG Belo Horizonte MG Brazil
| | - Eduardo E. Alberto
- Department of Chemistry Universidade Federal de Minas Gerais - UFMG Belo Horizonte MG Brazil
| | - Gelson Perin
- Laboratório de Síntese Orgânica Limpa – LASOL CCQFA Universidade Federal de Pelotas – UFPel P.O. Box 354 96010-900 Pelotas RS Brazil
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3
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Kang X, Liang X, Zeng Q. Water-Mediated Intramolecular Cyclization/Oxidation of α-Carbonyl Sulfur Ylides: Synthesis of Corey-Chaykovsky Reagent Type Heterocycles. Org Lett 2021; 23:7477-7481. [PMID: 34543036 DOI: 10.1021/acs.orglett.1c02667] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
A new class of Corey-Chaykovsky reagent type five-membered heterocycles with an oxosulfonium ylide moiety has been synthesized by the water-mediated intramolecular cyclization/oxidation of α-carbonyl sulfur ylides generated in situ from sulfonium salts under mild conditions.
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Affiliation(s)
- Xiaokang Kang
- The State Key Laboratory of Geohazard Prevention and Geoenvironment Protection, College of Materials, Chemistry & Chemical Engineering, Chengdu University of Technology, Chengdu 610059, People's Republic of China
| | - Xiayu Liang
- The State Key Laboratory of Geohazard Prevention and Geoenvironment Protection, College of Materials, Chemistry & Chemical Engineering, Chengdu University of Technology, Chengdu 610059, People's Republic of China
| | - Qingle Zeng
- The State Key Laboratory of Geohazard Prevention and Geoenvironment Protection, College of Materials, Chemistry & Chemical Engineering, Chengdu University of Technology, Chengdu 610059, People's Republic of China
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4
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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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5
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Jha BK, Prudhviraj J, Mainkar PS, Punna N, Chandrasekhar S. Diastereoselective synthesis of CF 3-dihydrobenzofurans by [4+1] annulation of in situ-generated CF 3- o-quinone methides and sulfur ylides. RSC Adv 2020; 10:38588-38591. [PMID: 35517513 PMCID: PMC9057278 DOI: 10.1039/d0ra08289a] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2020] [Accepted: 09/29/2020] [Indexed: 12/18/2022] Open
Abstract
An efficient and highly diastereoselective synthesis of CF3-dihydrobenzofurans by the reaction of in situ-generated CF3-oQMs in the presence of a base with sulphur ylides is put forward. The generality of the present developed method was well studied with diverse substrates to access the corresponding products in excellent yields. The highly reactive CF3-oQM has been utilized first time for the annulation reaction. The first [4 + 1] annulation reaction of in situ-generated highly electrophilic CF3-ortho-quinone methides with sulphur ylides has been put forth under mild reaction conditions to access CF3-dihydrobenzofurans.![]()
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Affiliation(s)
- Babli K Jha
- Department of Organic Synthesis and Process Chemistry, CSIR-Indian Institute of Chemical Technology Hyderabad 500007 India .,Academy of Scientific and Innovative Research (AcSIR) Ghaziabad 201002 India
| | - Jaggaraju Prudhviraj
- Department of Organic Synthesis and Process Chemistry, CSIR-Indian Institute of Chemical Technology Hyderabad 500007 India
| | - Prathama S Mainkar
- Department of Organic Synthesis and Process Chemistry, CSIR-Indian Institute of Chemical Technology Hyderabad 500007 India .,Academy of Scientific and Innovative Research (AcSIR) Ghaziabad 201002 India
| | - Nagender Punna
- Department of Organic Synthesis and Process Chemistry, CSIR-Indian Institute of Chemical Technology Hyderabad 500007 India .,Academy of Scientific and Innovative Research (AcSIR) Ghaziabad 201002 India
| | - Srivari Chandrasekhar
- Department of Organic Synthesis and Process Chemistry, CSIR-Indian Institute of Chemical Technology Hyderabad 500007 India .,Academy of Scientific and Innovative Research (AcSIR) Ghaziabad 201002 India
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6
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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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7
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Sangeetha S, Sekar G. Copper-catalyzed double C–S bond formation for the synthesis of 2-acyldihydrobenzo[b]thiophenes and 2-acylbenzo[b]thiophenes. Chem Commun (Camb) 2020; 56:10906-10909. [DOI: 10.1039/d0cc04647g] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Efficient domino methods are developed for the synthesis of 2,3-dihydrobenzo[b]thiophenes and 2-acylbenzo[b]thiophenes from 2-iodoketones using in situ generated iodine from by-product KI with a Cu-catalyst and xanthate.
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Affiliation(s)
- Subramani Sangeetha
- Department of Chemistry
- Indian Institute of Technology Madras
- Chennai-600036
- India
| | - Govindasamy Sekar
- Department of Chemistry
- Indian Institute of Technology Madras
- Chennai-600036
- India
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8
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Feng J, Wang S, Feng J, Li Q, Yue J, Yue G, Zou P, Wang G. Mild and efficient synthesis of trans-3-aryl-2-nitro-2,3-dihydrobenzofurans on water. NEW J CHEM 2020. [DOI: 10.1039/d0nj00548g] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
A protocol to prepare trans-3-aryl-2-nitro-2,3-dihydrobenzofurans has been developed on water. The protocol avoids the use of toxic solvents, tedious work-up procedures, and chromatographic separation.
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Affiliation(s)
- Juhua Feng
- College of Science
- Sichuan Agricultural University
- Ya’an
- P. R. China
| | - Siyuan Wang
- College of Science
- Sichuan Agricultural University
- Ya’an
- P. R. China
| | - Jinxiang Feng
- College of Science
- Sichuan Agricultural University
- Ya’an
- P. R. China
| | - Qiuju Li
- College of Science
- Sichuan Agricultural University
- Ya’an
- P. R. China
| | - Junping Yue
- College of Science
- Sichuan Agricultural University
- Ya’an
- P. R. China
| | - Guizhou Yue
- College of Science
- Sichuan Agricultural University
- Ya’an
- P. R. China
| | - Ping Zou
- College of Science
- Sichuan Agricultural University
- Ya’an
- P. R. China
| | - Guangtu Wang
- College of Science
- Sichuan Agricultural University
- Ya’an
- P. R. China
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9
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Chen W, Luo F, Wu Y, Cen J, Shao J, Yu Y. Efficient access to fluorescent benzofuro[3,2-b]carbazoles via TFA-promoted cascade annulations of sulfur ylides, 2-hydroxy-β-nitrostyrenes and indoles. Org Chem Front 2020. [DOI: 10.1039/d0qo00137f] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An efficient, TFA-promoted cascade annulation of sulfur ylides, 2-hydroxy-β-nitrostyrenes and indoles was established.
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Affiliation(s)
- Wenteng Chen
- College of Pharmaceutical Sciences
- Zhejiang University
- Hangzhou
- P. R. China
| | - Feng Luo
- College of Pharmaceutical Sciences
- Zhejiang University
- Hangzhou
- P. R. China
| | - You Wu
- College of Pharmaceutical Sciences
- Zhejiang University
- Hangzhou
- P. R. China
| | - Jie Cen
- College of Pharmaceutical Sciences
- Zhejiang University
- Hangzhou
- P. R. China
| | - Jiaan Shao
- School of Medicine
- Zhejiang University City College
- Hangzhou
- P. R. China
| | - Yongping Yu
- College of Pharmaceutical Sciences
- Zhejiang University
- Hangzhou
- P. R. China
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10
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Kato Y, Otomura N, Hirano K, Miura M. Diphosphination of ortho-quinone methide precursors with diphosphines. Tetrahedron Lett 2019. [DOI: 10.1016/j.tetlet.2019.06.055] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
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11
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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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12
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Meng FX, Wang RN, Huang HL, Gong SW, Li QL, Zhang SL, Ma CL, Li CZ, Du JY. Lewis acid-catalyzed tandem cyclization of in situ generated o-quinone methides and arylsulfonyl hydrazides for a one-pot entry to 3-sulfonylbenzofurans. Org Chem Front 2019. [DOI: 10.1039/c9qo01196j] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Lewis acid-mediated one-pot tandem cyclization of o-QMs with arylsulfonyl hydrazides was described for the first time and the corresponding 3-sulfonylbenzofuran products were obtained in moderate to good yields.
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Affiliation(s)
- Fan-Xiao Meng
- College of Chemistry and Chemical Engineering
- Liaocheng University
- Liaocheng
- China
| | - Ruo-Nan Wang
- College of Chemistry and Chemical Engineering
- Liaocheng University
- Liaocheng
- China
| | - Hong-Li Huang
- College of Chemistry and Chemical Engineering
- Liaocheng University
- Liaocheng
- China
| | - Shu-Wen Gong
- College of Chemistry and Chemical Engineering
- Liaocheng University
- Liaocheng
- China
| | - Qian-Li Li
- College of Chemistry and Chemical Engineering
- Liaocheng University
- Liaocheng
- China
| | - Shao-Liang Zhang
- College of Chemistry and Chemical Engineering
- Liaocheng University
- Liaocheng
- China
| | - Chun-Lin Ma
- College of Chemistry and Chemical Engineering
- Liaocheng University
- Liaocheng
- China
| | - Chen-Zhong Li
- Nanobioengineering/Bioelectronics Laboratory
- Department of Biomedical Engineering
- Florida International University
- Miami
- USA
| | - Ji-Yuan Du
- College of Chemistry and Chemical Engineering
- Liaocheng University
- Liaocheng
- China
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13
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Suneja A, Schneider C. Phosphoric Acid Catalyzed [4 + 1]-Cycloannulation Reaction of ortho-Quinone Methides and Diazoketones: Catalytic, Enantioselective Access toward cis-2,3-Dihydrobenzofurans. Org Lett 2018; 20:7576-7580. [PMID: 30407018 DOI: 10.1021/acs.orglett.8b03311] [Citation(s) in RCA: 59] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A highly straightforward route to enantiomerically highly enriched cis-2,3-dihydrobenzofurans has been achieved via addition of α-diazocarbonyl compounds to in situ generated o-QMs catalyzed by a chiral Brønsted acid. This catalytic strategy provides a direct access to 2,3-dihydrobenzofurans in high yields and with up to 91:9 dr and 99:1 er at ambient temperature. Moreover, a unique phenonium-type rearrangement accounts for product formation with an inverted 2,3-substitution pattern.
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Affiliation(s)
- Arun Suneja
- Institut für Organische Chemie, Universität Leipzig , Johannisallee 29 , 04103 Leipzig , Germany
| | - Christoph Schneider
- Institut für Organische Chemie, Universität Leipzig , Johannisallee 29 , 04103 Leipzig , Germany
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14
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Zhou T, Xia T, Liu Z, Liu L, Zhang J. Asymmetric Phosphine-Catalyzed [4+1] Annulations of o
-Quinone Methides with MBH Carbonates. Adv Synth Catal 2018. [DOI: 10.1002/adsc.201801152] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Tao Zhou
- School of Chemistry and Molecular Engineering; East China Normal University; 500 Dongchuan Road Shanghai 200241 People's Republic of China
| | - Tong Xia
- School of Chemistry and Molecular Engineering; East China Normal University; 500 Dongchuan Road Shanghai 200241 People's Republic of China
| | - Zhenli Liu
- School of Chemistry and Molecular Engineering; East China Normal University; 500 Dongchuan Road Shanghai 200241 People's Republic of China
| | - Lu Liu
- School of Chemistry and Molecular Engineering; East China Normal University; 500 Dongchuan Road Shanghai 200241 People's Republic of China
| | - Junliang Zhang
- School of Chemistry and Molecular Engineering; East China Normal University; 500 Dongchuan Road Shanghai 200241 People's Republic of China
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15
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Jiang F, Luo GZ, Zhu ZQ, Wang CS, Mei GJ, Shi F. Application of Naphthylindole-Derived Phosphines as Organocatalysts in [4 + 1] Cyclizations of o-Quinone Methides with Morita–Baylis–Hillman Carbonates. J Org Chem 2018; 83:10060-10069. [DOI: 10.1021/acs.joc.8b01390] [Citation(s) in RCA: 41] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Fei Jiang
- School of Chemistry and Materials Science, Jiangsu Normal University, Xuzhou, 221116, China
| | - Gui-Zhen Luo
- School of Chemistry and Materials Science, Jiangsu Normal University, Xuzhou, 221116, China
| | - Zi-Qi Zhu
- School of Chemistry and Materials Science, Jiangsu Normal University, Xuzhou, 221116, China
| | - Cong-Shuai Wang
- School of Chemistry and Materials Science, Jiangsu Normal University, Xuzhou, 221116, China
| | - Guang-Jian Mei
- School of Chemistry and Materials Science, Jiangsu Normal University, Xuzhou, 221116, China
| | - Feng Shi
- School of Chemistry and Materials Science, Jiangsu Normal University, Xuzhou, 221116, China
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16
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Abstract
The use of readily accessible ammonium ylides for (asymmetric) transformations, especially cyclization reactions, has received considerable attention over the past two decades. A variety of highly enantioselective protocols to facilitate annulation reactions have recently been introduced as an alternative to other common methods including S-ylide-mediated strategies. It is the intention of this short review to provide an introduction to this field by highlighting the potential of ammonium ylides for (asymmetric) cyclization reactions as well as to present the limitations and challenges of these methods.
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Affiliation(s)
- Lukas Roiser
- Institute of Organic Chemistry, Johannes Kepler University Linz Altenbergerstr. 69 4040 Linz (Austria)
| | - Katharina Zielke
- Institute of Organic Chemistry, Johannes Kepler University Linz Altenbergerstr. 69 4040 Linz (Austria)
| | - Mario Waser
- Institute of Organic Chemistry, Johannes Kepler University Linz Altenbergerstr. 69 4040 Linz (Austria)
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17
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Yang J, Mo H, Wu H, Cao D, Pan C, Wang Z. An elimination/Heck coupling/allylation cascade reaction: synthesis of 2,3-dihydrobenzofurans from allenoate adducts. Chem Commun (Camb) 2018; 54:1213-1216. [PMID: 29336446 DOI: 10.1039/c7cc07435b] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
A highly regio- and stereoselective Pd-catalyzed cascade reaction of allenoate adducts has been developed. Various allenoate adducts of phosphine-catalyzed addition of allenoates are found to be efficient substrates for the preparation of 2,3-dihydrobenzofuran. It is the first example of allenoate adducts used as ideal and practical precursors of hard-to-get functionalized 1,3-butadienes for heterocycle synthesis.
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Affiliation(s)
- Jianguo Yang
- School of Pharmaceutical and Chemical Engineering, Taizhou University, Taizhou, Zhejiang 317000, P. R. China
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18
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Yang J, Mo H, Jin X, Cao D, Wu H, Chen D, Wang Z. Vinylogous Elimination/Heck Coupling/Allylation Domino Reactions: Access to 2-Substituted 2,3-Dihydrobenzofurans and Indolines. J Org Chem 2018; 83:2592-2600. [PMID: 29419292 DOI: 10.1021/acs.joc.7b02986] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
A highly regio- and stereoselctive palladium-catalyzed domino reaction of functionalized aryl allyl ethers has been developed. Various aryl allyl ethers derived from the phosphine-catalyzed addition of electron-deficient allenes with phenol are found to be efficient substrates for the synthesis of 2-substituted 2,3-dihydrobenzofurans and indolines. It is the first example of aryl allyl ether used as an ideal and practical precursor of hard to get functionalized 1,3-butadiene for the heterocyclic compound synthesis.
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Affiliation(s)
- Jianguo Yang
- School of Pharmaceutical and Chemical Engineering, Taizhou University , Taizhou, Zhejiang 317000, People's Republic of China
| | - Hanjie Mo
- School of Pharmaceutical and Chemical Engineering, Taizhou University , Taizhou, Zhejiang 317000, People's Republic of China
| | - Xiuxiu Jin
- School of Pharmaceutical and Chemical Engineering, Taizhou University , Taizhou, Zhejiang 317000, People's Republic of China
| | - Dongdong Cao
- School of Pharmaceutical and Chemical Engineering, Taizhou University , Taizhou, Zhejiang 317000, People's Republic of China
| | - Haijian Wu
- College of Pharmaceutical Science, Zhejiang Chinese Medical University , Hangzhou, Zhejiang 311400, People's Republic of China
| | - Di Chen
- School of Pharmaceutical and Chemical Engineering, Taizhou University , Taizhou, Zhejiang 317000, People's Republic of China
| | - Zhiming Wang
- School of Pharmaceutical and Chemical Engineering, Taizhou University , Taizhou, Zhejiang 317000, People's Republic of China.,College of Pharmaceutical Science, Zhejiang Chinese Medical University , Hangzhou, Zhejiang 311400, People's Republic of China
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19
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Abstract
![]()
The
first (4 + 1)-annulation of o-quinone methides
with α-branched allenoates as C1 synthons has been developed.
This operationally simple protocol gives access to highly functionalized
dihydrobenzofurans in an unprecedented fashion with excellent diastereoselectivities
and high yields.
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Affiliation(s)
- Katharina Zielke
- Institute of Organic Chemistry, Johannes Kepler University Linz , Altenbergerstrasse 69, 4040 Linz, Austria
| | - Mario Waser
- Institute of Organic Chemistry, Johannes Kepler University Linz , Altenbergerstrasse 69, 4040 Linz, Austria
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20
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Liu L, Yuan Z, Pan R, Zeng Y, Lin A, Yao H, Huang Y. 1,6-Conjugated addition-mediated [4 + 1] annulation: an approach to 2,3-dihydrobenzofurans. Org Chem Front 2018. [DOI: 10.1039/c7qo00846e] [Citation(s) in RCA: 70] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
2,3-Dihydrobenzofurans were achieved via a 1,6-conjugated addition-mediated [4 + 1] annulation of ortho-hydroxyphenyl-substituted para-quinone methides in high yields with high diastereoselectivity.
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Affiliation(s)
- Lina Liu
- State Key Laboratory of Natural Medicines (SKLNM) and Department of Medicinal Chemistry
- School of Pharmacy
- China Pharmaceutical University
- Nanjing
- P. R. China
| | - Zhenbo Yuan
- State Key Laboratory of Natural Medicines (SKLNM) and Department of Medicinal Chemistry
- School of Pharmacy
- China Pharmaceutical University
- Nanjing
- P. R. China
| | - Rui Pan
- State Key Laboratory of Natural Medicines (SKLNM) and Department of Medicinal Chemistry
- School of Pharmacy
- China Pharmaceutical University
- Nanjing
- P. R. China
| | - Yuye Zeng
- State Key Laboratory of Natural Medicines (SKLNM) and Department of Medicinal Chemistry
- School of Pharmacy
- China Pharmaceutical University
- Nanjing
- P. R. China
| | - Aijun Lin
- State Key Laboratory of Natural Medicines (SKLNM) and Department of Medicinal Chemistry
- School of Pharmacy
- China Pharmaceutical University
- Nanjing
- P. R. China
| | - Hequan Yao
- State Key Laboratory of Natural Medicines (SKLNM) and Department of Medicinal Chemistry
- School of Pharmacy
- China Pharmaceutical University
- Nanjing
- P. R. China
| | - Yue Huang
- Department of Organic Chemistry
- School of Science
- China Pharmaceutical University
- Nanjing
- P. R. China
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21
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Chao MN, Storey M, Li C, Rodríguez MG, Di Salvo F, Szajnman SH, Moreno SN, Docampo R, Rodriguez JB. Selenium-containing analogues of WC-9 are extremely potent inhibitors of Trypanosoma cruzi proliferation. Bioorg Med Chem 2017; 25:6435-6449. [DOI: 10.1016/j.bmc.2017.10.016] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2017] [Revised: 10/06/2017] [Accepted: 10/15/2017] [Indexed: 12/21/2022]
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22
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Abstract
The use of Cinchona alkaloid-based chiral ammonium ylides allows for the first highly enantioselective and broadly applicable spirocyclopropanation reactions of para-quinone methides. This strategy provides a straightforward protocol toward the chiral spiro[2.5]octa-4,7-dien-6-one skeleton, which is a frequently found structural motif in important biologically active molecules.
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Affiliation(s)
- Lukas Roiser
- Institute of Organic Chemistry, Johannes Kepler University Linz , Altenbergerstr. 69, 4040 Linz, Austria
| | - Mario Waser
- Institute of Organic Chemistry, Johannes Kepler University Linz , Altenbergerstr. 69, 4040 Linz, Austria
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23
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Meisinger N, Roiser L, Monkowius U, Himmelsbach M, Robiette R, Waser M. Asymmetric Synthesis of 2,3-Dihydrobenzofurans by a [4+1] Annulation Between Ammonium Ylides and In Situ Generated o-Quinone Methides. Chemistry 2017; 23:5137-5142. [PMID: 28165173 PMCID: PMC5419452 DOI: 10.1002/chem.201700171] [Citation(s) in RCA: 73] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2017] [Indexed: 12/31/2022]
Abstract
A highly enantio‐ and diastereoselective [4+1] annulation between in situ generated ammonium ylides and o‐quinone methides for the synthesis of a variety of 2,3‐dihydrobenzofurans has been developed. The key factors controlling the reactivity and stereoselectivity were systematically investigated by experimental and computational means and the energy profiles obtained provide a deeper insight into the mechanistic details of this reaction.
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Affiliation(s)
- Nicole Meisinger
- Johannes Kepler University Linz, Institute of Organic Chemistry, Altenbergerstrasse 69, 4040, Linz, Austria
| | - Lukas Roiser
- Johannes Kepler University Linz, Institute of Organic Chemistry, Altenbergerstrasse 69, 4040, Linz, Austria
| | - Uwe Monkowius
- Johannes Kepler University Linz, Institute of Inorganic Chemistry, Altenbergerstrasse 69, 4040, Linz, Austria
| | - Markus Himmelsbach
- Johannes Kepler University Linz, Institute of Analytical Chemistry, Altenbergerstrasse 69, 4040, Linz, Austria
| | - Raphaël Robiette
- Université catholique de Louvain, Institute of Condensed Matter and Nanosciences, Place Louis Pasteur 1 box L4.01.02, 1348, Louvain-la-Neuve, Belgium
| | - Mario Waser
- Johannes Kepler University Linz, Institute of Organic Chemistry, Altenbergerstrasse 69, 4040, Linz, Austria
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24
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Yang QQ, Xiao WJ. Catalytic Asymmetric Synthesis of Chiral Dihydrobenzofurans through a Formal [4+1] Annulation Reaction of Sulfur Ylides and In Situ Generatedortho-Quinone Methides. European J Org Chem 2016. [DOI: 10.1002/ejoc.201601186] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Affiliation(s)
- 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 443002 Yichang Hubei China
- Key Laboratory of Pesticide & Chemical Biology; Ministry of Education, College of Chemistry; Central China Normal University; 152 Luoyu Road 430079 Wuhan Hubei China
| | - Wen-Jing Xiao
- Key Laboratory of Pesticide & Chemical Biology; Ministry of Education, College of Chemistry; Central China Normal University; 152 Luoyu Road 430079 Wuhan Hubei China
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25
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Cheng X, Peng Y, Wu J, Deng GJ. Palladium-catalyzed paraformaldehyde insertion: a three-component synthesis of benzofurans. Org Biomol Chem 2016; 14:2819-23. [DOI: 10.1039/c6ob00198j] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
2-Aroylbenzofurans were prepared from 2-bromophenols, phenacyl bromides and paraformaldehyde under palladium catalysis conditions.
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Affiliation(s)
- Xiufang Cheng
- Key Laboratory of Environmentally Friendly Chemistry and Application of Ministry of Education
- College of Chemistry
- Xiangtan University
- Xiangtan
- China
| | - Yi Peng
- Key Laboratory of Environmentally Friendly Chemistry and Application of Ministry of Education
- College of Chemistry
- Xiangtan University
- Xiangtan
- China
| | - Jun Wu
- Key Laboratory of Environmentally Friendly Chemistry and Application of Ministry of Education
- College of Chemistry
- Xiangtan University
- Xiangtan
- China
| | - Guo-Jun Deng
- Key Laboratory of Environmentally Friendly Chemistry and Application of Ministry of Education
- College of Chemistry
- Xiangtan University
- Xiangtan
- China
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26
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Venkateswarlu V, Aravinda Kumar KA, Gupta S, Singh D, Vishwakarma RA, Sawant SD. DMSO/I2 mediated C–C bond cleavage of α-ketoaldehydes followed by C–O bond formation: a metal-free approach for one-pot esterification. Org Biomol Chem 2015; 13:7973-8. [DOI: 10.1039/c5ob01015b] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
One-pot I2/DMSO mediated metal-free C–C bond cleavage of aryl-/heteroaryl- or aliphatic α-ketoaldehydes offering a carboxylic acid followed by esterification is presented.
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Affiliation(s)
- Vunnam Venkateswarlu
- Medicinal Chemistry Division
- CSIR-Indian Institute of Integrative Medicine
- Jammu-180 001
- India
- Academy of Scientific and Innovative Research
| | - K. A. Aravinda Kumar
- Medicinal Chemistry Division
- CSIR-Indian Institute of Integrative Medicine
- Jammu-180 001
- India
| | - Sorav Gupta
- Medicinal Chemistry Division
- CSIR-Indian Institute of Integrative Medicine
- Jammu-180 001
- India
- Academy of Scientific and Innovative Research
| | - Deepika Singh
- QC-QA Division
- CSIR-Indian Institute of Integrative Medicine
- Jammu-180 001
- India
- Academy of Scientific and Innovative Research
| | - Ram A. Vishwakarma
- Medicinal Chemistry Division
- CSIR-Indian Institute of Integrative Medicine
- Jammu-180 001
- India
- Academy of Scientific and Innovative Research
| | - Sanghapal D. Sawant
- Medicinal Chemistry Division
- CSIR-Indian Institute of Integrative Medicine
- Jammu-180 001
- India
- Academy of Scientific and Innovative Research
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