1
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Malakar CC, Dell'Amico L, Zhang W. Dual Catalysis in Organic Synthesis: Current Challenges and New Trends. European J Org Chem 2022. [DOI: 10.1002/ejoc.202201114] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Chandi C. Malakar
- Department of Chemistry National Institute of Technology Manipur Langol Imphal 795004 Manipur India
| | - Luca Dell'Amico
- Department of Chemical Sciences University of Padova Via Marzolo 1 35131 Padova Italy
| | - Wanbin Zhang
- Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs School of Chemistry and Chemical Engineering Shanghai Jiao Tong University 800 Dongchuan Road Shanghai 200240 China
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2
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Barday M, Bouillac P, Coquerel Y, Amatore M, Constantieux T, Rodriguez J. Enantioselective Organocatalytic Syntheses and Ring‐Expansions of Cyclobutane Derivatives. European J Org Chem 2021. [DOI: 10.1002/ejoc.202100405] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Manuel Barday
- Aix-Marseille Univ, CNRS, Centrale Marseille, iSm2 Marseille France
| | - Pierre Bouillac
- Aix-Marseille Univ, CNRS, Centrale Marseille, iSm2 Marseille France
| | - Yoann Coquerel
- Aix-Marseille Univ, CNRS, Centrale Marseille, iSm2 Marseille France
| | - Muriel Amatore
- Aix-Marseille Univ, CNRS, Centrale Marseille, iSm2 Marseille France
| | | | - Jean Rodriguez
- Aix-Marseille Univ, CNRS, Centrale Marseille, iSm2 Marseille France
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3
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Ma G, Afewerki S, Zhang K, Ibrahem I, Córdova A. Accelerating Amine‐Catalyzed Asymmetric Reactions by Intermolecular Cooperative Thiourea/Oxime Hydrogen‐Bond Catalysis. European J Org Chem 2021. [DOI: 10.1002/ejoc.202100315] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Guangning Ma
- Department of Natural Sciences Engineering and Mathematics Mid Sweden University 851 70 Sundsvall Sweden
| | - Samson Afewerki
- Department of Natural Sciences Engineering and Mathematics Mid Sweden University 851 70 Sundsvall Sweden
| | - Kaiheng Zhang
- Department of Natural Sciences Engineering and Mathematics Mid Sweden University 851 70 Sundsvall Sweden
| | - Ismail Ibrahem
- Department of Natural Sciences Engineering and Mathematics Mid Sweden University 851 70 Sundsvall Sweden
| | - Armando Córdova
- Department of Natural Sciences Engineering and Mathematics Mid Sweden University 851 70 Sundsvall Sweden
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4
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Zeng L, Xu J, Zhang D, Yan Z, Cheng G, Rao W, Gao L. Catalytic Enantioselective [2+2] Cycloaddition of α-Halo Acroleins: Construction of Cyclobutanes Containing Two Tetrasubstituted Stereocenters. Angew Chem Int Ed Engl 2020; 59:21890-21894. [PMID: 32803881 DOI: 10.1002/anie.202008465] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2020] [Revised: 07/31/2020] [Indexed: 01/16/2023]
Abstract
A catalytic enantioselective formal [2+2] cycloaddition between α-halo acroleins and electronically diverse arylalkenes is described. In the presence of (S)-oxazaborolidinium cation as the catalyst, densely functionalized cyclobutanes containing two vicinal tetrasubstituted stereocenters were produced in high yields and high diastereoselectivities with excellent enantioselectivities. Mechanistic studies revealed that the cis isomer could be transformed into the trans isomer via an enantiocontrolled process. A gram-scale reaction of this catalytic method was used to demonstrate its synthetic potential.
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Affiliation(s)
- Lei Zeng
- College of Materials Science and Engineering, Huaqiao University, No.668 Jimei Avenue, Xiamen, Fujian, China
| | - Jingjing Xu
- College of Materials Science and Engineering, Huaqiao University, No.668 Jimei Avenue, Xiamen, Fujian, China
| | - Dongsheng Zhang
- College of Materials Science and Engineering, Huaqiao University, No.668 Jimei Avenue, Xiamen, Fujian, China
| | - Zhongliang Yan
- College of Materials Science and Engineering, Huaqiao University, No.668 Jimei Avenue, Xiamen, Fujian, China
| | - Guolin Cheng
- College of Materials Science and Engineering, Huaqiao University, No.668 Jimei Avenue, Xiamen, Fujian, China
| | - Weidong Rao
- Jiangsu Key Laboratory of Biomass-Based Green Fuels and Chemicals, College of Chemical Engineering, Nanjing Forestry University, Nanjing, China
| | - Lizhu Gao
- College of Materials Science and Engineering, Huaqiao University, No.668 Jimei Avenue, Xiamen, Fujian, China
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5
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Xiao X, Shao B, Lu Y, Cao Q, Xia C, Chen F. Recent Advances in Asymmetric Organomulticatalysis. Adv Synth Catal 2020. [DOI: 10.1002/adsc.202000961] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Xiao Xiao
- Institute of Pharmaceutical Science and Technology Zhejiang University of Technology Hangzhou 310014 People's Republic China
- Collaborative Innovation Center of Yangtze River Delta Region Green Pharmaceuticals Zhejiang University of Technology Hangzhou 310014 People's Republic China
| | - Bing‐Xuan Shao
- Institute of Pharmaceutical Science and Technology Zhejiang University of Technology Hangzhou 310014 People's Republic China
- Collaborative Innovation Center of Yangtze River Delta Region Green Pharmaceuticals Zhejiang University of Technology Hangzhou 310014 People's Republic China
| | - Yin‐Jie Lu
- Institute of Pharmaceutical Science and Technology Zhejiang University of Technology Hangzhou 310014 People's Republic China
- Collaborative Innovation Center of Yangtze River Delta Region Green Pharmaceuticals Zhejiang University of Technology Hangzhou 310014 People's Republic China
| | - Qian‐Qian Cao
- Institute of Pharmaceutical Science and Technology Zhejiang University of Technology Hangzhou 310014 People's Republic China
- Collaborative Innovation Center of Yangtze River Delta Region Green Pharmaceuticals Zhejiang University of Technology Hangzhou 310014 People's Republic China
| | - Chun‐Nian Xia
- Institute of Pharmaceutical Science and Technology Zhejiang University of Technology Hangzhou 310014 People's Republic China
| | - Fen‐Er Chen
- Institute of Pharmaceutical Science and Technology Zhejiang University of Technology Hangzhou 310014 People's Republic China
- Engineering Center of Catalysis and Synthesis for Chiral Molecules Fudan University Shanghai 200433 People's Republic China
- Shanghai Engineering Center of Industrial Asymmetric Catalysis for Chiral Drugs Shanghai 200433 People's Republic China
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6
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Zeng L, Xu J, Zhang D, Yan Z, Cheng G, Rao W, Gao L. Catalytic Enantioselective [2+2] Cycloaddition of α‐Halo Acroleins: Construction of Cyclobutanes Containing Two Tetrasubstituted Stereocenters. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202008465] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Lei Zeng
- College of Materials Science and Engineering Huaqiao University No.668 Jimei Avenue Xiamen Fujian China
| | - Jingjing Xu
- College of Materials Science and Engineering Huaqiao University No.668 Jimei Avenue Xiamen Fujian China
| | - Dongsheng Zhang
- College of Materials Science and Engineering Huaqiao University No.668 Jimei Avenue Xiamen Fujian China
| | - Zhongliang Yan
- College of Materials Science and Engineering Huaqiao University No.668 Jimei Avenue Xiamen Fujian China
| | - Guolin Cheng
- College of Materials Science and Engineering Huaqiao University No.668 Jimei Avenue Xiamen Fujian China
| | - Weidong Rao
- Jiangsu Key Laboratory of Biomass-Based Green Fuels and Chemicals College of Chemical Engineering Nanjing Forestry University Nanjing China
| | - Lizhu Gao
- College of Materials Science and Engineering Huaqiao University No.668 Jimei Avenue Xiamen Fujian China
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7
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Regio- and Enantioselective α,γ-Dialkylation of α,β-Unsaturated Aldehydes Through Cascade Organocatalysis. European J Org Chem 2020. [DOI: 10.1002/ejoc.202000245] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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8
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Huang YS, Song SG, Ren L, Li YG, Wu X. Enantioselective γ-Alkylation of α,β-Unsaturated Aldehydes Using New Cinchona-Based Primary Amine Catalyst. European J Org Chem 2019. [DOI: 10.1002/ejoc.201901219] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Yong-Shuang Huang
- Anhui Province Key Laboratory of Advanced Catalytic Materials and Reaction Engineering; School of Chemistry and Chemical Engineering; Hefei University of Technology; 193 Tunxi Road 230009 Hefei China
| | - Shuang-Gui Song
- Anhui Province Key Laboratory of Advanced Catalytic Materials and Reaction Engineering; School of Chemistry and Chemical Engineering; Hefei University of Technology; 193 Tunxi Road 230009 Hefei China
| | - Lei Ren
- Anhui Therapy Pharmaceutial Co., Ltd; Innovation Industrial Park, High-tech Zone Hefei China
| | - You-Gui Li
- Anhui Province Key Laboratory of Advanced Catalytic Materials and Reaction Engineering; School of Chemistry and Chemical Engineering; Hefei University of Technology; 193 Tunxi Road 230009 Hefei China
| | - Xiang Wu
- Anhui Province Key Laboratory of Advanced Catalytic Materials and Reaction Engineering; School of Chemistry and Chemical Engineering; Hefei University of Technology; 193 Tunxi Road 230009 Hefei China
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9
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Muthusamy S, Kesavan V. Asymmetric Cycloaddition Reactions of Oxindole α-Keto Esters via Cascade Dienamine-Enamine and Trienamine Strategies. European J Org Chem 2019. [DOI: 10.1002/ejoc.201900567] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Subramaniam Muthusamy
- Chemical Biology Laboratory; Department of Biotechnology; Bhupat and Jyothi Mehta School of Biosciences Building; Indian Institute of Technology Madras; -600036 Chennai India
| | - Venkitasamy Kesavan
- Chemical Biology Laboratory; Department of Biotechnology; Bhupat and Jyothi Mehta School of Biosciences Building; Indian Institute of Technology Madras; -600036 Chennai India
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10
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Gudise VB, Settipalli PC, Reddy EK, Anwar S. Oxa-Michael-Michael Reaction of MBH Alcohol and 2-Arylidene-1,3-indanedione: Regioselective Formal [4+2] Cycloaddition towards Tetrahydrospiropyran Scaffolds. European J Org Chem 2019. [DOI: 10.1002/ejoc.201801709] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Affiliation(s)
- Veera Babu Gudise
- Division of Chemistry; Department of Sciences and Humanities; Vignan's Foundation for Science, Technology and Research (Deemed to be University); Vadlamudi 522 213 Guntur - Andhra Pradesh India
| | - Poorna Chandrasekhar Settipalli
- Division of Chemistry; Department of Sciences and Humanities; Vignan's Foundation for Science, Technology and Research (Deemed to be University); Vadlamudi 522 213 Guntur - Andhra Pradesh India
| | - Eeda Koti Reddy
- Division of Chemistry; Department of Sciences and Humanities; Vignan's Foundation for Science, Technology and Research (Deemed to be University); Vadlamudi 522 213 Guntur - Andhra Pradesh India
| | - Shaik Anwar
- Division of Chemistry; Department of Sciences and Humanities; Vignan's Foundation for Science, Technology and Research (Deemed to be University); Vadlamudi 522 213 Guntur - Andhra Pradesh India
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11
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Parella R, Jakkampudi S, Arman H, Zhao JCG. Stereoselective Synthesis of 3-Oxabicyclo[3.3.1]nonan-2-ones via a Domino Reaction Catalyzed by Modularly Designed Organocatalysts. Adv Synth Catal 2019; 361:208-213. [PMID: 31467501 PMCID: PMC6715131 DOI: 10.1002/adsc.201800987] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2018] [Indexed: 01/29/2023]
Abstract
A highly stereoselective method for the synthesis of functionalized 3-oxabicyclo[3.3.1]nonan-2-one derivatives with four contiguous stereogenic centers, including one tetrasubstituted stereogenic center, was realized through an organocatalytic domino Michael-hemiacetalization-Michael reaction of (E)-3-aryl-2-nitroprop-2-enols and (E)-7-aryl-7-oxohept-5-enals followed by a PCC oxidation. Using the modularly designed organocatalysts (MDOs) self-assembled from cinchona alkaloid derivatives and amino acids in the reaction media, the title products were obtained in good yields (up to 84%), excellent diastereoselectivities (> 99:1 dr), and high enantioselectivities (up to 96% ee).
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Affiliation(s)
- Ramarao Parella
- Department of Chemistry, University of Texas at San Antonio, One UTSA Circle, San Antonio, Texas 78249-0698, USA, Fax: (+1)-210-458-7428; phone: (+1)-210-458-5432
| | - Satish Jakkampudi
- Department of Chemistry, University of Texas at San Antonio, One UTSA Circle, San Antonio, Texas 78249-0698, USA, Fax: (+1)-210-458-7428; phone: (+1)-210-458-5432
| | - Hadi Arman
- Department of Chemistry, University of Texas at San Antonio, One UTSA Circle, San Antonio, Texas 78249-0698, USA, Fax: (+1)-210-458-7428; phone: (+1)-210-458-5432
| | - John C.-G. Zhao
- Department of Chemistry, University of Texas at San Antonio, One UTSA Circle, San Antonio, Texas 78249-0698, USA, Fax: (+1)-210-458-7428; phone: (+1)-210-458-5432
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12
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Martín-Sómer A, Arpa EM, Díaz-Tendero S, Alemán J. Intramolecular Hydrogen Bond Activation of Aza-Methylene Imines in Hydrogen Bond Bifunctional Catalysis - A Density Functional Theory Study. European J Org Chem 2018. [DOI: 10.1002/ejoc.201801208] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Affiliation(s)
- Ana Martín-Sómer
- Departamento de Química (Módulo 13); Science Faculty; Universidad Autonoma de Madrid; 28049 Madrid Spain
| | - Enrique M. Arpa
- Departamento de Química (Módulo 13); Science Faculty; Universidad Autonoma de Madrid; 28049 Madrid Spain
| | - Sergio Díaz-Tendero
- Departamento de Química (Módulo 13); Science Faculty; Universidad Autonoma de Madrid; 28049 Madrid Spain
- Institute for Advanced Research in Chemical Sciences (IAdChem); Science Faculty; Universidad Autonoma de Madrid; 28049 Madrid Spain
- Condensed Matter Physics Center (IFIMAC); Science Faculty; Universidad Autonoma de Madrid; 28049 Madrid Spain
| | - José Alemán
- Institute for Advanced Research in Chemical Sciences (IAdChem); Science Faculty; Universidad Autonoma de Madrid; 28049 Madrid Spain
- Organic Chemistry Deparment (modulo 1); Science Faculty; Universidad Autonoma de Madrid; 28049 Madrid Spain
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13
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Li X, Guo L, Peng C, Han B. Organocatalytic Asymmetric Cascade Reactions Based on Gamma-Nitro Carbonyl Compound. CHEM REC 2018; 19:394-423. [PMID: 30019511 DOI: 10.1002/tcr.201800047] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2018] [Accepted: 06/19/2018] [Indexed: 12/11/2022]
Abstract
The significant advancements in asymmetric organocascade reactions have been accomplished during the past decades, paving the way to the efficient and stereoselective construction of structurally complex scaffolds from simple and readily available starting materials. Nitro-containing cyclic compounds have become a privileged molecular library given their broad and promising activities in various therapeutic areas. In various approaches to build these valuable scaffolds, the utility of γ-nitrocarbonyl intermediates is one of the most efficient approaches due to its high efficiency, reliability and versatility. The strategies and catalyst systems described here highlight recent advances in the enantioselective synthesis of nitro-containing cyclic molecules via organocascade strategies based on γ-nitrocarbonyl intermediates. Various organocatalysts with distinct activation modes have found application in providing these sophisticated compounds. This review is organized according to the types of organocatalyst. These methods are of importance for the construction of complex chiral cyclic frameworks and the design of new pharmaceutical compounds. We believe that compounds based on nitro-containing cyclic skeletons have the potential to provide novel therapeutic agents and useful biological tools.
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Affiliation(s)
- Xiang Li
- State Key Laboratory Breeding Base of Systematic Research, Development and Utilization of Chinese Medicine Resources, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Li Guo
- Ministry of Education Key Laboratory of Standardization of Chinese Medicine, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Cheng Peng
- State Key Laboratory Breeding Base of Systematic Research, Development and Utilization of Chinese Medicine Resources, Chengdu University of Traditional Chinese Medicine, Chengdu, China.,Ministry of Education Key Laboratory of Standardization of Chinese Medicine, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Bo Han
- State Key Laboratory Breeding Base of Systematic Research, Development and Utilization of Chinese Medicine Resources, Chengdu University of Traditional Chinese Medicine, Chengdu, China
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14
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Guerrero‐Corella A, Esteban F, Iniesta M, Martín‐Somer A, Parra M, Díaz‐Tendero S, Fraile A, Alemán J. 2-Hydroxybenzophenone as a Chemical Auxiliary for the Activation of Ketiminoesters for Highly Enantioselective Addition to Nitroalkenes under Bifunctional Catalysis. Angew Chem Int Ed Engl 2018; 57:5350-5354. [PMID: 29493860 PMCID: PMC5947601 DOI: 10.1002/anie.201800435] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2018] [Indexed: 02/04/2023]
Abstract
An organocatalytic system is presented for the Michael addition of monoactivated glycine ketimine ylides with a bifunctional catalyst. The ketimine bears an ortho hydroxy group, which increases the acidity of the methylene hydrogen atoms and enhances the reactivity, thus allowing the synthesis of a large variety of α,γ-diamino acid derivatives with excellent stereoselectivity.
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Affiliation(s)
| | - Francisco Esteban
- Organic Chemistry Department, Módulo 1Universidad Autónoma de Madrid28049MadridSpain
| | - Manuel Iniesta
- Organic Chemistry Department, Módulo 1Universidad Autónoma de Madrid28049MadridSpain
| | - Ana Martín‐Somer
- Chemistry DepartmentUniversidad Autónoma de Madrid28049MadridSpain
| | - Mario Parra
- Organic Chemistry Department, Módulo 1Universidad Autónoma de Madrid28049MadridSpain
| | - Sergio Díaz‐Tendero
- Chemistry DepartmentUniversidad Autónoma de Madrid28049MadridSpain
- Institute for Advanced Research in Chemical Sciences (IAdChem)Spain
- Condensed Matter Physics Center (IFIMAC)Universidad Autónoma de Madrid28049MadridSpain
| | - Alberto Fraile
- Organic Chemistry Department, Módulo 1Universidad Autónoma de Madrid28049MadridSpain
- Institute for Advanced Research in Chemical Sciences (IAdChem)Spain
| | - Jose Alemán
- Organic Chemistry Department, Módulo 1Universidad Autónoma de Madrid28049MadridSpain
- Institute for Advanced Research in Chemical Sciences (IAdChem)Spain
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15
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Sakamoto T, Mochizuki T, Goto Y, Hatano M, Ishihara K. Boron Tribromide-Assisted Chiral Phosphoric Acid Catalysts for Enantioselective [2+2] Cycloaddition. Chem Asian J 2018; 13:2373-2377. [DOI: 10.1002/asia.201800351] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2018] [Revised: 03/27/2018] [Indexed: 12/21/2022]
Affiliation(s)
- Tatsuhiro Sakamoto
- Graduate School of Engineering; Nagoya University; Furo-cho Chikusa Nagoya 464-8603 Japan
| | - Takuya Mochizuki
- Graduate School of Engineering; Nagoya University; Furo-cho Chikusa Nagoya 464-8603 Japan
| | - Yuta Goto
- Graduate School of Engineering; Nagoya University; Furo-cho Chikusa Nagoya 464-8603 Japan
| | - Manabu Hatano
- Graduate School of Engineering; Nagoya University; Furo-cho Chikusa Nagoya 464-8603 Japan
| | - Kazuaki Ishihara
- Graduate School of Engineering; Nagoya University; Furo-cho Chikusa Nagoya 464-8603 Japan
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16
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Guerrero-Corella A, Esteban F, Iniesta M, Martín-Somer A, Parra M, Díaz-Tendero S, Fraile A, Alemán J. 2-Hydroxybenzophenone as a Chemical Auxiliary for the Activation of Ketiminoesters for Highly Enantioselective Addition to Nitroalkenes under Bifunctional Catalysis. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201800435] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
| | - Francisco Esteban
- Organic Chemistry Department, Módulo 1; Universidad Autónoma de Madrid; 28049 Madrid Spain
| | - Manuel Iniesta
- Organic Chemistry Department, Módulo 1; Universidad Autónoma de Madrid; 28049 Madrid Spain
| | - Ana Martín-Somer
- Chemistry Department; Universidad Autónoma de Madrid; 28049 Madrid Spain
| | - Mario Parra
- Organic Chemistry Department, Módulo 1; Universidad Autónoma de Madrid; 28049 Madrid Spain
| | - Sergio Díaz-Tendero
- Chemistry Department; Universidad Autónoma de Madrid; 28049 Madrid Spain
- Institute for Advanced Research in Chemical Sciences (IAdChem); Spain
- Condensed Matter Physics Center (IFIMAC); Universidad Autónoma de Madrid; 28049 Madrid Spain
| | - Alberto Fraile
- Organic Chemistry Department, Módulo 1; Universidad Autónoma de Madrid; 28049 Madrid Spain
- Institute for Advanced Research in Chemical Sciences (IAdChem); Spain
| | - Jose Alemán
- Organic Chemistry Department, Módulo 1; Universidad Autónoma de Madrid; 28049 Madrid Spain
- Institute for Advanced Research in Chemical Sciences (IAdChem); Spain
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17
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Wang M, Chen J, Chen Z, Zhong C, Lu P. Enantioselective Desymmetrization of Cyclobutanones Enabled by Synergistic Palladium/Enamine Catalysis. Angew Chem Int Ed Engl 2018; 57:2707-2711. [DOI: 10.1002/anie.201711845] [Citation(s) in RCA: 44] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2017] [Indexed: 11/10/2022]
Affiliation(s)
- Meng Wang
- Department of Research Center for Molecular Recognition and Synthesis, Department of Chemistry; Fudan University; 220 Handan Lu Shanghai 200433 P.R. China
| | - Jun Chen
- Department of Research Center for Molecular Recognition and Synthesis, Department of Chemistry; Fudan University; 220 Handan Lu Shanghai 200433 P.R. China
| | - Zongjia Chen
- Department of Research Center for Molecular Recognition and Synthesis, Department of Chemistry; Fudan University; 220 Handan Lu Shanghai 200433 P.R. China
| | - Changxu Zhong
- Department of Research Center for Molecular Recognition and Synthesis, Department of Chemistry; Fudan University; 220 Handan Lu Shanghai 200433 P.R. China
| | - Ping Lu
- Department of Research Center for Molecular Recognition and Synthesis, Department of Chemistry; Fudan University; 220 Handan Lu Shanghai 200433 P.R. China
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18
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Wang M, Chen J, Chen Z, Zhong C, Lu P. Enantioselective Desymmetrization of Cyclobutanones Enabled by Synergistic Palladium/Enamine Catalysis. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201711845] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Meng Wang
- Department of Research Center for Molecular Recognition and Synthesis, Department of Chemistry; Fudan University; 220 Handan Lu Shanghai 200433 P.R. China
| | - Jun Chen
- Department of Research Center for Molecular Recognition and Synthesis, Department of Chemistry; Fudan University; 220 Handan Lu Shanghai 200433 P.R. China
| | - Zongjia Chen
- Department of Research Center for Molecular Recognition and Synthesis, Department of Chemistry; Fudan University; 220 Handan Lu Shanghai 200433 P.R. China
| | - Changxu Zhong
- Department of Research Center for Molecular Recognition and Synthesis, Department of Chemistry; Fudan University; 220 Handan Lu Shanghai 200433 P.R. China
| | - Ping Lu
- Department of Research Center for Molecular Recognition and Synthesis, Department of Chemistry; Fudan University; 220 Handan Lu Shanghai 200433 P.R. China
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19
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Fan Q, Tan H, Li P, Yan H. Hetero-intermolecular [2+2] photocycloaddition of 1,4-dihydropyridines: a combined experimental and DFT study. NEW J CHEM 2018. [DOI: 10.1039/c8nj02192a] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
A detailed DFT mechanistic study of hetero-intermolecular [2+2] photocycloaddition of 1,4-DHPs was carried out for investigating the regioselectivity of such transformation.
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Affiliation(s)
- Qiangwen Fan
- College of Life Science and Bioengineering
- Beijing University of Technology
- Beijing 100124
- China
| | - Hongbo Tan
- International Academy of Targeted Therapeutics and Innovation
- Chongqing University of Arts and Sciences
- Chongqing
- China
| | - Peng Li
- College of Life Science and Bioengineering
- Beijing University of Technology
- Beijing 100124
- China
| | - Hong Yan
- College of Life Science and Bioengineering
- Beijing University of Technology
- Beijing 100124
- China
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20
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Wang S, Rodríguez-Escrich C, Pericàs MA. Catalytic Asymmetric [8+2] Annulation Reactions Promoted by a Recyclable Immobilized Isothiourea. Angew Chem Int Ed Engl 2017; 56:15068-15072. [DOI: 10.1002/anie.201707341] [Citation(s) in RCA: 53] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2017] [Indexed: 12/12/2022]
Affiliation(s)
- Shoulei Wang
- Institute of Chemical Research of Catalonia (ICIQ); The Barcelona Institute of Science and Technology; Av. Països Catalans 16 43007 Tarragona Spain
| | - Carles Rodríguez-Escrich
- Institute of Chemical Research of Catalonia (ICIQ); The Barcelona Institute of Science and Technology; Av. Països Catalans 16 43007 Tarragona Spain
| | - Miquel A. Pericàs
- Institute of Chemical Research of Catalonia (ICIQ); The Barcelona Institute of Science and Technology; Av. Països Catalans 16 43007 Tarragona Spain
- Departament de Química Inorgànica i Orgànica; Universitat de Barcelona; 08080 Barcelona Spain
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21
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Wang S, Rodríguez-Escrich C, Pericàs MA. Catalytic Asymmetric [8+2] Annulation Reactions Promoted by a Recyclable Immobilized Isothiourea. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201707341] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Affiliation(s)
- Shoulei Wang
- Institute of Chemical Research of Catalonia (ICIQ); The Barcelona Institute of Science and Technology; Av. Països Catalans 16 43007 Tarragona Spain
| | - Carles Rodríguez-Escrich
- Institute of Chemical Research of Catalonia (ICIQ); The Barcelona Institute of Science and Technology; Av. Països Catalans 16 43007 Tarragona Spain
| | - Miquel A. Pericàs
- Institute of Chemical Research of Catalonia (ICIQ); The Barcelona Institute of Science and Technology; Av. Països Catalans 16 43007 Tarragona Spain
- Departament de Química Inorgànica i Orgànica; Universitat de Barcelona; 08080 Barcelona Spain
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22
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Miller ZD, Lee BJ, Yoon TP. Enantioselective Crossed Photocycloadditions of Styrenic Olefins by Lewis Acid Catalyzed Triplet Sensitization. Angew Chem Int Ed Engl 2017; 56:11891-11895. [PMID: 28776908 PMCID: PMC5661956 DOI: 10.1002/anie.201706975] [Citation(s) in RCA: 110] [Impact Index Per Article: 15.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2017] [Revised: 07/31/2017] [Indexed: 12/21/2022]
Abstract
The synthesis of unsymmetrical cyclobutanes by controlled heterodimerization of olefins remains a substantial challenge, particularly in an enantiocontrolled fashion. Shown herein is that chiral Lewis acid catalyzed triplet sensitization enables the synthesis of highly enantioenriched diarylcyclobutanes by photocycloaddition of structurally varied 2'-hydroxychalcones with a range of styrene coupling partners. The utility of this reaction is demonstrated through the direct synthesis of a representative norlignan cyclobutane natural product.
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Affiliation(s)
- Zachary D Miller
- Department of Chemistry, University of Wisconsin-Madison, 1101 University Avenue, Madison, WI, 53726, USA
| | - Byung Joo Lee
- Department of Chemistry, University of Wisconsin-Madison, 1101 University Avenue, Madison, WI, 53726, USA
| | - Tehshik P Yoon
- Department of Chemistry, University of Wisconsin-Madison, 1101 University Avenue, Madison, WI, 53726, USA
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23
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Miller ZD, Lee BJ, Yoon TP. Enantioselective Crossed Photocycloadditions of Styrenic Olefins by Lewis Acid Catalyzed Triplet Sensitization. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201706975] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Zachary D. Miller
- Department of Chemistry; University of Wisconsin-Madison; 1101 University Avenue Madison WI 53726 USA
| | - Byung Joo Lee
- Department of Chemistry; University of Wisconsin-Madison; 1101 University Avenue Madison WI 53726 USA
| | - Tehshik P. Yoon
- Department of Chemistry; University of Wisconsin-Madison; 1101 University Avenue Madison WI 53726 USA
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24
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Łągiewka B, Albrecht Ł. Studies on the Formation of Dienamine and Trienamine Intermediates by 1
H NMR Spectroscopy. ASIAN J ORG CHEM 2017. [DOI: 10.1002/ajoc.201600616] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Bartosz Łągiewka
- Institute of Organic Chemistry, Department of Chemistry; Lodz University of Technology; Zeromskiego 116 90-924 Łódź Poland
| | - Łukasz Albrecht
- Institute of Organic Chemistry, Department of Chemistry; Lodz University of Technology; Zeromskiego 116 90-924 Łódź Poland
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25
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Diastereoselective Synthesis of Functionalized Angularly-Fused Tetracyclesviaan Organocatalytic Quadruple Reaction Sequence. Adv Synth Catal 2017. [DOI: 10.1002/adsc.201700023] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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26
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Dobi Z, Holczbauer T, Soós T. Schreiner's Thiourea Promoted [2+2] Cycloaddition of Captodative Azetidinones and Nitroolefins. European J Org Chem 2017. [DOI: 10.1002/ejoc.201601524] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Zoltán Dobi
- Institute of Organic Chemistry; Research Centre for Natural Sciences; Hungarian Academy of Sciences; P. O. Box 286 1519 Budapest Hungary
| | - Tamás Holczbauer
- Institute of Organic Chemistry; Research Centre for Natural Sciences; Hungarian Academy of Sciences; P. O. Box 286 1519 Budapest Hungary
| | - Tibor Soós
- Institute of Organic Chemistry; Research Centre for Natural Sciences; Hungarian Academy of Sciences; P. O. Box 286 1519 Budapest Hungary
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27
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Quintard A, Rodriguez J. Organo- and Iron(0) Catalysis for an Enantioselective Michael Addition-Hemiketalization-Fragmentation Sequence to Protected ω-Hydroxy-nitroketones. Adv Synth Catal 2016. [DOI: 10.1002/adsc.201600618] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Adrien Quintard
- Aix Marseille Univ; CNRS; Centrale Marseille, iSm2 13397 Marseille France
| | - Jean Rodriguez
- Aix Marseille Univ; CNRS; Centrale Marseille, iSm2 13397 Marseille France
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28
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Guisán-Ceinos M, Parra A, Martín-Heras V, Tortosa M. Enantioselective Synthesis of Cyclobutylboronates via a Copper-Catalyzed Desymmetrization Approach. Angew Chem Int Ed Engl 2016; 55:6969-72. [DOI: 10.1002/anie.201601976] [Citation(s) in RCA: 79] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2016] [Indexed: 01/02/2023]
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29
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Guisán-Ceinos M, Parra A, Martín-Heras V, Tortosa M. Enantioselective Synthesis of Cyclobutylboronates via a Copper-Catalyzed Desymmetrization Approach. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201601976] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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30
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Wang H, Cao X, Chen X, Fang W, Dolg M. Regulatory Mechanism of the Enantioselective Intramolecular Enone [2+2] Photocycloaddition Reaction Mediated by a Chiral Lewis Acid Catalyst Containing Heavy Atoms. Angew Chem Int Ed Engl 2015; 54:14295-8. [PMID: 26437573 DOI: 10.1002/anie.201505931] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2015] [Revised: 08/14/2015] [Indexed: 11/11/2022]
Abstract
The asymmetric catalysis of the intramolecular enone [2+2] photocycloaddition has been subject of extensive experimental studies, however theoretical insight to its regulatory mechanism is still sparse. Accurate quantum chemical calculations at the CASPT2//CASSCF level of theory associated with energy-consistent relativistic pseudopotentials provide a basis for the first regulation theory that the enantioselective reaction is predominantly controlled by the presence of relativistic effects, that is, spin-orbit coupling resulting from heavy atoms in the chiral Lewis acid catalyst.
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Affiliation(s)
- Hongjuan Wang
- Key Laboratory of Theoretical and Computational Photochemistry of Ministry of Education, Department of Chemistry, Beijing Normal University, Xin-wai-da-jie No. 19, Beijing 100875 (China)
| | - Xiaoyan Cao
- Theoretical Chemistry, University of Cologne, Greinstrasse 4, 50939 Cologne (Germany)
| | - Xuebo Chen
- Key Laboratory of Theoretical and Computational Photochemistry of Ministry of Education, Department of Chemistry, Beijing Normal University, Xin-wai-da-jie No. 19, Beijing 100875 (China).
| | - Weihai Fang
- Key Laboratory of Theoretical and Computational Photochemistry of Ministry of Education, Department of Chemistry, Beijing Normal University, Xin-wai-da-jie No. 19, Beijing 100875 (China)
| | - Michael Dolg
- Theoretical Chemistry, University of Cologne, Greinstrasse 4, 50939 Cologne (Germany).
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31
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Wang H, Cao X, Chen X, Fang W, Dolg M. Regulatory Mechanism of the Enantioselective Intramolecular Enone [2+2] Photocycloaddition Reaction Mediated by a Chiral Lewis Acid Catalyst Containing Heavy Atoms. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201505931] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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32
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Xu Y, Conner ML, Brown MK. Cyclobutane and cyclobutene synthesis: catalytic enantioselective [2+2] cycloadditions. Angew Chem Int Ed Engl 2015; 54:11918-28. [PMID: 26333192 DOI: 10.1002/anie.201502815] [Citation(s) in RCA: 216] [Impact Index Per Article: 24.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2015] [Indexed: 12/21/2022]
Abstract
Cyclobutanes and cyclobutenes are important structural motifs found in numerous biologically significant molecules, and they are useful intermediates for chemical synthesis. Consequently, [2+2] cycloadditions to access cyclobutanes and cyclobutenes have been established to be particularly useful transformations. Within the last 10 years, an increase in the frequency of publications for catalytic enantioselective [2+2] cycloadditions has occurred. These reactions provide access to a wide array of enantiomerically enriched chemical diversity that was not previously attainable. Described in this review are the advances made in catalytic enantioselective [2+2] cycloadditions to access cyclobutanes and cyclobutenes.
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Affiliation(s)
- Yao Xu
- Department of Chemistry, Indiana University, 800 E. Kirkwood Ave., Bloomington, IN 47405 (USA)
| | - Michael L Conner
- Department of Chemistry, Indiana University, 800 E. Kirkwood Ave., Bloomington, IN 47405 (USA)
| | - M Kevin Brown
- Department of Chemistry, Indiana University, 800 E. Kirkwood Ave., Bloomington, IN 47405 (USA).
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33
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Xu Y, Conner ML, Brown MK. Synthese von Cyclobutanen und Cyclobutenen: katalytische enantioselektive [2+2]-Cycloadditionen. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201502815] [Citation(s) in RCA: 63] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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34
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Chen S, Lou Q, Ding Y, Zhang S, Hu W, Zhao J. Organocatalytic Enantioselective Michael Reaction of Malononitrile with β,β-Disubstituted Nitroalkenes. Adv Synth Catal 2015. [DOI: 10.1002/adsc.201500079] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
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35
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Kim KH, Lim JW, Lee J, Go MJ, Kim JN. Thermal Intramolecular [2+2] Cycloaddition: Synthesis of 3-Azabicyclo[3.1.1]heptanes from Morita-Baylis-Hillman Adduct-Derived 4,4-Diaryl-1,3-dienes. Adv Synth Catal 2014. [DOI: 10.1002/adsc.201400571] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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36
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Martínez JI, Villar L, Uria U, Carrillo L, Reyes E, Vicario JL. Bifunctional Squaramide Catalysts with the Same Absolute Chirality for the Diastereodivergent Access to Densely Functionalised Cyclohexanes through Enantioselective Domino Reactions. Synthesis and Mechanistic Studies. Adv Synth Catal 2014. [DOI: 10.1002/adsc.201400502] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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37
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Johnson T, Choo KL, Lautens M. Rhodium-Catalyzed Arylative Cyclization for the Enantioselective Synthesis of (Trifluoromethyl)cyclobutanols. Chemistry 2014; 20:14194-7. [DOI: 10.1002/chem.201404896] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2014] [Indexed: 11/09/2022]
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38
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Cruz Cruz D, Mose R, Villegas Gómez C, Torbensen SV, Larsen MS, Jørgensen KA. Organocatalytic Cascade Reactions: Towards the Diversification of Hydroisochromenes and Chromenes through Two Different Activation Modes. Chemistry 2014; 20:11331-5. [DOI: 10.1002/chem.201403505] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2014] [Indexed: 11/11/2022]
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39
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Yang D, Wang L, Han F, Zhao D, Wang R. Design of a Combinational Magnesium Catalyst for the Stereocontrolled Cross Reaction of Enones. Chemistry 2014; 20:8584-8. [DOI: 10.1002/chem.201403183] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2014] [Indexed: 02/06/2023]
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40
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Nakano SI, Kakugawa K, Nemoto T, Hamada Y. Scandium-Catalyzed Cascade Cyclization to Produce Cyclobutane-Fused Tetrahydroquinoline, Chromane, Thiochromane, and Tetrahydronaphthalene Derivatives. Adv Synth Catal 2014. [DOI: 10.1002/adsc.201400020] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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41
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Li W, Wei J, Jia Q, Du Z, Zhang K, Wang J. Asymmetric synthesis of tetrahydroquinolines through a [3+2] cycloaddition controlled by dienamine catalysis. Chemistry 2014; 20:6592-6. [PMID: 24789078 DOI: 10.1002/chem.201402089] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2014] [Indexed: 11/06/2022]
Abstract
A dienamine-mediated enantioselective 1,3-dipolar cycloaddition catalyzed by a chiral prolinol silyl ether catalyst has been developed. Removal of the benzamide group of the intermediates could furnish chiral C-1 substituted tetrahydroisoquinolines (see scheme) in high yields and excellent stereoselectivities.
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Affiliation(s)
- Wenjun Li
- Allan H. Conney Laboratory for Anticancer Research, Guangdong University of Technology, Guang Dong, 510006 (China); Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore 117543 (Singapore), Fax: (+65) 6516-1691
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42
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de Nanteuil F, Waser J. Synthesis of aminocyclobutanes by iron-catalyzed [2+2] cycloaddition. Angew Chem Int Ed Engl 2013; 52:9009-13. [PMID: 23868610 DOI: 10.1002/anie.201303803] [Citation(s) in RCA: 77] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2013] [Indexed: 11/11/2022]
Affiliation(s)
- Florian de Nanteuil
- Laboratory of Catalysis and Organic Synthesis, Ecole Polytechnique Fédérale de Lausanne, EPFL SB ISIC LCSO, BCH 4306, 1015 Lausanne, Switzerland
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43
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de Nanteuil F, Waser J. Synthesis of Aminocyclobutanes by Iron-Catalyzed [2+2] Cycloaddition. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201303803] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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44
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Kastl R, Wennemers H. Peptide-Catalyzed Stereoselective Conjugate Addition Reactions Generating All-Carbon Quaternary Stereogenic Centers. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201301583] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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45
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Kastl R, Wennemers H. Peptide-Catalyzed Stereoselective Conjugate Addition Reactions Generating All-Carbon Quaternary Stereogenic Centers. Angew Chem Int Ed Engl 2013; 52:7228-32. [DOI: 10.1002/anie.201301583] [Citation(s) in RCA: 105] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2013] [Indexed: 11/12/2022]
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46
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Seebach D, Sun X, Ebert MO, Schweizer WB, Purkayastha N, Beck AK, Duschmalé J, Wennemers H, Mukaiyama T, Benohoud M, Hayashi Y, Reiher M. Stoichiometric Reactions of Enamines Derived from Diphenylprolinol Silyl Ethers with Nitro Olefins and Lessons for the Corresponding Organocatalytic Conversions - a Survey. Helv Chim Acta 2013. [DOI: 10.1002/hlca.201300079] [Citation(s) in RCA: 64] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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47
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Petruzziello D, Stenta M, Mazzanti A, Cozzi PG. A Rational Approach Towards a New Ferrocenyl Pyrrolidine for Stereoselective Enamine Catalysis. Chemistry 2013; 19:7696-700. [DOI: 10.1002/chem.201300959] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2013] [Indexed: 11/10/2022]
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48
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Tian X, Melchiorre P. Control of Remote Stereochemistry in the Synthesis of Spirocyclic Oxindoles: Vinylogous Organocascade Catalysis. Angew Chem Int Ed Engl 2013; 52:5360-3. [DOI: 10.1002/anie.201301017] [Citation(s) in RCA: 110] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2013] [Revised: 03/05/2013] [Indexed: 12/18/2022]
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49
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Tian X, Melchiorre P. Control of Remote Stereochemistry in the Synthesis of Spirocyclic Oxindoles: Vinylogous Organocascade Catalysis. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201301017] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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50
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Hong BC, Lan DJ, Dange NS, Lee GH, Liao JH. Organocatalytic Enantioselective Michael-Henry Acetalization of Glutaraldehyde and 3-Aryl-2-nitroprop-2-enols: A Facile Entry to 3-Oxabicyclo[3.3.1]nonan-2-ones with Four Consecutive Stereogenic Centers. European J Org Chem 2013. [DOI: 10.1002/ejoc.201201496] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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