1
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Thorwart T, Greb L. Reversible C-H bond silylation with a neutral silicon Lewis acid. Chem Sci 2023; 14:11237-11242. [PMID: 37860638 PMCID: PMC10583699 DOI: 10.1039/d3sc03488g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2023] [Accepted: 09/14/2023] [Indexed: 10/21/2023] Open
Abstract
The silicon-carbon bond is a valuable linchpin for synthetic transformations. However, installing Si-C functionalities requires metalated C-nucleophiles, activated silicon reagents (silylium ions, silyl radicals, and silyl anions), or transition metal catalysis, and it occurs irreversibly. In contrast, spontaneous C-H silylations with neutral silanes leading to anionic silicates, and their reversible deconstruction, are elusive. Herein, the CH-bond silylation of heterocycles or a terminal alkyne is achieved by reaction with bis(perfluoro(N-phenyl-ortho-amidophenolato))silane and 1,2,2,6,6-pentamethylpiperidine. Computational and experimental insights reveal a frustrated Lewis pair (FLP) mechanism. Adding a silaphilic donor to the ammonium silicate products induces the reformation of the C-H bond, thus complementing previously known irreversible C-H bond silylation protocols. Interestingly, the FLP "activated" N-methylpyrrole exhibits "deactivated" features against electrophiles, while a catalytic functionalization is found to be effective only in the absence of a base.
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Affiliation(s)
- Thaddäus Thorwart
- Ruprecht-Karls-Universität Heidelberg, Anorganisch-Chemisches Institut Im Neuenheimer Feld 270 Heidelberg 69120 Germany
| | - Lutz Greb
- Ruprecht-Karls-Universität Heidelberg, Anorganisch-Chemisches Institut Im Neuenheimer Feld 270 Heidelberg 69120 Germany
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2
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Rozsar D, Formica M, Yamazaki K, Hamlin TA, Dixon DJ. Bifunctional Iminophosphorane-Catalyzed Enantioselective Sulfa-Michael Addition to Unactivated α,β-Unsaturated Amides. J Am Chem Soc 2022; 144:1006-1015. [PMID: 34990142 PMCID: PMC8793149 DOI: 10.1021/jacs.1c11898] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
![]()
The
first metal-free catalytic intermolecular enantioselective
Michael addition to unactivated α,β-unsaturated amides
is described. Consistently high enantiomeric excesses and yields were
obtained over a wide range of alkyl thiol pronucleophiles and electrophiles
under mild reaction conditions, enabled by a novel squaramide-based
bifunctional iminophosphorane catalyst. Low catalyst loadings (2.0
mol %) were achieved on a decagram scale, demonstrating the scalability
of the reaction. Computational analysis revealed the origin of the
high enantiofacial selectivity via analysis of relevant transition
structures and provided substantial support for specific noncovalent
activation of the carbonyl group of the α,β-unsaturated
amide by the catalyst.
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Affiliation(s)
- Daniel Rozsar
- Department of Chemistry, Chemistry Research Laboratory, University of Oxford, 12 Mansfield Road, OX1 3TA Oxford, United Kingdom
| | - Michele Formica
- Department of Chemistry, Chemistry Research Laboratory, University of Oxford, 12 Mansfield Road, OX1 3TA Oxford, United Kingdom
| | - Ken Yamazaki
- Department of Chemistry, Chemistry Research Laboratory, University of Oxford, 12 Mansfield Road, OX1 3TA Oxford, United Kingdom.,Department of Theoretical Chemistry, Amsterdam Institute of Molecular and Life Sciences (AIMMS), Amsterdam Center for Multiscale Modeling (ACMM), Vrije Universiteit Amsterdam, De Boelelaan 1083, 1081 HV Amsterdam, The Netherlands
| | - Trevor A Hamlin
- Department of Theoretical Chemistry, Amsterdam Institute of Molecular and Life Sciences (AIMMS), Amsterdam Center for Multiscale Modeling (ACMM), Vrije Universiteit Amsterdam, De Boelelaan 1083, 1081 HV Amsterdam, The Netherlands
| | - Darren J Dixon
- Department of Chemistry, Chemistry Research Laboratory, University of Oxford, 12 Mansfield Road, OX1 3TA Oxford, United Kingdom
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3
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Aminocatalytic stereoselective synthesis of (E)-α-naphthyl enals via cross-coupling-like reaction of 1-bromo-2-naphthols with enals. GREEN SYNTHESIS AND CATALYSIS 2021. [DOI: 10.1016/j.gresc.2021.08.001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
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4
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Borah B, Dwivedi KD, Chowhan LR. Recent Advances in Metal‐ and Organocatalyzed Asymmetric Functionalization of Pyrroles. ASIAN J ORG CHEM 2021. [DOI: 10.1002/ajoc.202100427] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Biplob Borah
- School of Applied Material Sciences Centre for Applied Chemistry Central University of Gujarat Sector-30 Gandhinagar 382030 India
| | - Kartikey Dhar Dwivedi
- School of Applied Material Sciences Centre for Applied Chemistry Central University of Gujarat Sector-30 Gandhinagar 382030 India
| | - L. Raju Chowhan
- School of Applied Material Sciences Centre for Applied Chemistry Central University of Gujarat Sector-30 Gandhinagar 382030 India
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5
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Nagaraju S, Sathish K, Kashinath D. Applications of 3,5‐Dialkyl‐4‐nitroisoxazoles and Their Derivatives in Organic Synthesis
#. ChemistrySelect 2021. [DOI: 10.1002/slct.202101719] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Sakkani Nagaraju
- Department of Chemistry National Institute of Technology Warangal-506 004 India 2677
| | - Kota Sathish
- Department of Chemistry National Institute of Technology Warangal-506 004 India 2677
| | - Dhurke Kashinath
- Department of Chemistry National Institute of Technology Warangal-506 004 India 2677
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6
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Gaviña D, Escolano M, Torres J, Alzuet‐Piña G, Sánchez‐Roselló M, Pozo C. Organocatalytic Enantioselective Friedel‐Crafts Alkylation Reactions of Pyrroles. Adv Synth Catal 2021. [DOI: 10.1002/adsc.202100313] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Daniel Gaviña
- Department of Organic Chemistry University of Valencia E-46100 Burjassot Spain
| | - Marcos Escolano
- Department of Organic Chemistry University of Valencia E-46100 Burjassot Spain
| | - Javier Torres
- Department of Organic Chemistry University of Valencia E-46100 Burjassot Spain
| | - Gloria Alzuet‐Piña
- Department of Inorganic Chemistry University of Valencia E-46100 Burjassot Spain
| | | | - Carlos Pozo
- Department of Organic Chemistry University of Valencia E-46100 Burjassot Spain
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7
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Qi L. B(C6F5)3-Catalyzed Conjugate Addition Reactions: Addition of C–H Aromatics as Nucleophiles to Nitroalkenes. RUSSIAN JOURNAL OF ORGANIC CHEMISTRY 2020. [DOI: 10.1134/s107042802001025x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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8
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Alegre-Requena JV, Valero-Tena A, Sonsona IG, Uriel S, Herrera RP. Simple iodoalkyne-based organocatalysts for the activation of carbonyl compounds. Org Biomol Chem 2020; 18:1594-1601. [PMID: 31934687 DOI: 10.1039/c9ob02688f] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
A novel approach for the formation of bisindolylmethane derivatives (BIMs) is described as a proof of concept to evaluate the catalytic capacity of iodoalkynes. The use of these derivatives is reported as an example of simple halogen bond-based organocatalyst. This kind of activation has not been used before for the synthesis of bisindolylmethane derivatives 3. Interestingly, the preparation of 3-(1H-indol-3-yl)-1-phenylbutan-1-one (8) has been also achieved for the first time with an iodoalkyne derivative. We prove the efficiency of this family of new catalysts by developing a simple and easy operational methodology, opening the door to the development of alternative catalysts in the area of halogen bond-based organocatalysts.
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Affiliation(s)
- Juan V Alegre-Requena
- Laboratorio de Organocatálisis Asimétrica. Dpto de Química Orgánica. Instituto de Síntesis Química y Catálisis Homogénea (ISQCH) CSIC-Universidad de Zaragoza. C/Pedro Cerbuna 12, 50009 Zaragoza, Spain.
| | - Alberto Valero-Tena
- Laboratorio de Organocatálisis Asimétrica. Dpto de Química Orgánica. Instituto de Síntesis Química y Catálisis Homogénea (ISQCH) CSIC-Universidad de Zaragoza. C/Pedro Cerbuna 12, 50009 Zaragoza, Spain. and Dpto. de Química Orgánica, Escuela de Ingeniería y Arquitectura, Universidad de Zaragoza, 50018 Zaragoza, Spain
| | - Isaac G Sonsona
- Laboratorio de Organocatálisis Asimétrica. Dpto de Química Orgánica. Instituto de Síntesis Química y Catálisis Homogénea (ISQCH) CSIC-Universidad de Zaragoza. C/Pedro Cerbuna 12, 50009 Zaragoza, Spain.
| | - Santiago Uriel
- Dpto. de Química Orgánica, Escuela de Ingeniería y Arquitectura, Universidad de Zaragoza, 50018 Zaragoza, Spain
| | - Raquel P Herrera
- Laboratorio de Organocatálisis Asimétrica. Dpto de Química Orgánica. Instituto de Síntesis Química y Catálisis Homogénea (ISQCH) CSIC-Universidad de Zaragoza. C/Pedro Cerbuna 12, 50009 Zaragoza, Spain.
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9
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Wang CJ, Yang QQ, Wang MX, Shang YH, Tong XY, Deng YH, Shao Z. Catalytic asymmetric 1,4-type Friedel–Crafts (hetero)arylations of 1-azadienes: the highly enantioselective syntheses of chiral hetero-triarylmethanes. Org Chem Front 2020. [DOI: 10.1039/c9qo01391a] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
Strategies for achieving the direct catalytic asymmetric syntheses of benzofuran-containing hetero-triarylmethanes using a 1,4-type Friedel–Crafts (hetero)arylation reaction were developed.
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Affiliation(s)
- Cheng-Jie Wang
- Key Laboratory of Medicinal Chemistry for Natural Resource
- Ministry of Education
- School of Chemical Science and Technology
- Yunnan University
- Kunming
| | - Qi-Qiong Yang
- Key Laboratory of Medicinal Chemistry for Natural Resource
- Ministry of Education
- School of Chemical Science and Technology
- Yunnan University
- Kunming
| | - Mei-Xin Wang
- Key Laboratory of Medicinal Chemistry for Natural Resource
- Ministry of Education
- School of Chemical Science and Technology
- Yunnan University
- Kunming
| | - Yun-Han Shang
- Key Laboratory of Medicinal Chemistry for Natural Resource
- Ministry of Education
- School of Chemical Science and Technology
- Yunnan University
- Kunming
| | - Xin-Yu Tong
- Key Laboratory of Medicinal Chemistry for Natural Resource
- Ministry of Education
- School of Chemical Science and Technology
- Yunnan University
- Kunming
| | - Yu-Hua Deng
- Key Laboratory of Medicinal Chemistry for Natural Resource
- Ministry of Education
- School of Chemical Science and Technology
- Yunnan University
- Kunming
| | - Zhihui Shao
- Key Laboratory of Medicinal Chemistry for Natural Resource
- Ministry of Education
- School of Chemical Science and Technology
- Yunnan University
- Kunming
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10
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Jang WJ, Song SB, Lee S, Yoo SY, Chung YK, Huh J, Yun J. LiOtBu-promoted stereoselective deconjugation of α,β-unsaturated diesters probed using density functional theory. Org Chem Front 2020. [DOI: 10.1039/d0qo01091j] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
We report the isomerisation of α,β-unsaturated diesters to thermodynamically less favourable β,γ-unsaturated carbonyl compounds in the absence of strongly basic anhydrous or photochemical conditions.
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Affiliation(s)
- Won Jun Jang
- Department of Chemistry and Institute of Basic Science
- Sungkyunkwan University
- Suwon
- Korea
| | - Seon Bin Song
- Department of Chemistry and Institute of Basic Science
- Sungkyunkwan University
- Suwon
- Korea
| | - Soyeon Lee
- Department of Chemistry and Institute of Basic Science
- Sungkyunkwan University
- Suwon
- Korea
| | - Seok Yeol Yoo
- Department of Chemistry and Institute of Basic Science
- Sungkyunkwan University
- Suwon
- Korea
| | - You Kyoung Chung
- Department of Chemistry and Institute of Basic Science
- Sungkyunkwan University
- Suwon
- Korea
| | - Joonsuk Huh
- Department of Chemistry and Institute of Basic Science
- Sungkyunkwan University
- Suwon
- Korea
- School of Advanced Institute of Nanotechnology
| | - Jaesook Yun
- Department of Chemistry and Institute of Basic Science
- Sungkyunkwan University
- Suwon
- Korea
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11
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Wei J, Cao B, Tse CW, Chang XY, Zhou CY, Che CM. Chiral cis-iron(ii) complexes with metal- and ligand-centered chirality for highly regio- and enantioselective alkylation of N-heteroaromatics. Chem Sci 2019; 11:684-693. [PMID: 34123041 PMCID: PMC8145867 DOI: 10.1039/c9sc04858h] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
Iron-catalyzed highly regio- and enantioselective organic transformations with generality and broad substrate scope have profound applications in modern synthetic chemistry; an example is herein described based on cis-FeII complexes having metal- and ligand-centered chirality. The cis-β FeII(N4) complex [FeII(L)(OTf)2] (L = N,N′-bis(2,3-dihydro-1H-cyclopenta-[b]quinoline-5-yl)-N,N′-dimethylcyclohexane-1,2-diamine) is an effective chiral catalyst for highly regio- and enantioselective alkylation of N-heteroaromatics with α,β-unsaturated 2-acyl imidazoles, including asymmetric N1, C2, C3 alkylations of a broad range of indoles (34 examples) and alkylation of pyrroles and anilines (14 examples), all with high product yields (up to 98%), high enantioselectivity (up to >99% ee) and high regioselectivity. DFT calculations revealed that the “chiral-at-metal” cis-β configuration of the iron complex and a secondary π–π interaction are responsible for the high enantioselectivity. A cis-β FeII complex having metal- and ligand-centered chirality catalyzes highly regio- and enantioselective alkylation of indoles (at the N1, C2, or C3 position), pyrroles and anilines with α,β-unsaturated 2-acyl imidazoles (48 examples, up to 99% ee).![]()
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Affiliation(s)
- Jinhu Wei
- State Key Laboratory of Synthetic Chemistry, Department of Chemistry, The University of Hong Kong Pokfulam Road Hong Kong SAR China
| | - Bei Cao
- State Key Laboratory of Synthetic Chemistry, Department of Chemistry, The University of Hong Kong Pokfulam Road Hong Kong SAR China
| | - Chun-Wai Tse
- State Key Laboratory of Synthetic Chemistry, Department of Chemistry, The University of Hong Kong Pokfulam Road Hong Kong SAR China
| | - Xiao-Yong Chang
- Department of Chemistry, Southern University of Science and Technology Shenzhen Guangdong 518055 China
| | - Cong-Ying Zhou
- State Key Laboratory of Synthetic Chemistry, Department of Chemistry, The University of Hong Kong Pokfulam Road Hong Kong SAR China
| | - Chi-Ming Che
- State Key Laboratory of Synthetic Chemistry, Department of Chemistry, The University of Hong Kong Pokfulam Road Hong Kong SAR China .,Department of Chemistry, Southern University of Science and Technology Shenzhen Guangdong 518055 China.,HKU Shenzhen Institute of Research & Innovation Shenzhen 518055 China
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12
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Sato R, Tosaka T, Masu H, Arai T. Catalytic Asymmetric Synthesis of Chiral Bis(indolyl)methanes Using a Ts-PyBidine-Nickel Complex. J Org Chem 2019; 84:14248-14257. [PMID: 31553607 DOI: 10.1021/acs.joc.9b02006] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
A chiral tosyl-substituted bis(imidazolidine)pyridine Ts-PyBidine-nickel complex was an efficient catalyst for Friedel-Crafts reaction of indoles with methylene indolinones to give bisindolylmethane compounds having differently oxidized indole units with high enantioselectivities. Alkylation of the products proceeded smoothly in a highly diastereoselective manner, providing an all-carbon quaternary carbon center without significant loss of enantiomeric excess.
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Affiliation(s)
- Ryo Sato
- Soft Molecular Activation Research Center (SMARC), Chiba Iodine Research Innovation Center (CIRIC), and Department of Chemistry, Graduate School of Science , Chiba University , 1-33 Yayoi , Inage, Chiba 263-8522 , Japan
| | - Takuya Tosaka
- Soft Molecular Activation Research Center (SMARC), Chiba Iodine Research Innovation Center (CIRIC), and Department of Chemistry, Graduate School of Science , Chiba University , 1-33 Yayoi , Inage, Chiba 263-8522 , Japan
| | - Hyuma Masu
- Center for Analytical Instrumentation , Chiba University , 1-33 Yayoi , Inage, Chiba 263-8522 , Japan
| | - Takayoshi Arai
- Soft Molecular Activation Research Center (SMARC), Chiba Iodine Research Innovation Center (CIRIC), and Department of Chemistry, Graduate School of Science , Chiba University , 1-33 Yayoi , Inage, Chiba 263-8522 , Japan
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13
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Wang K, Chen C, Liu X, Li D, Peng T, Liu X, Yang D, Wang L. Enantioselective Reaction between 2-(Cyanomethyl)azaarenes and N-Boc-amino Sulfones. Org Lett 2018; 20:5260-5263. [PMID: 30095273 DOI: 10.1021/acs.orglett.8b02205] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A series of 2-(cyanomethyl)azaarenes containing benzothiazole or benzoxazole were designed and synthesized for asymmetric α-functionalization with N-Boc-amino sulfones. The Mannich adducts were obtained in high yields with good diastereo- and enantioselectivities. Aryl-substituted amino sulfones were tolerated under the current conditions, and the reaction can be performed on gram scale in good results.
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Affiliation(s)
- Kezhou Wang
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province, School of Basic Medical Sciences , Lanzhou University Lanzhou 730000 , China.,The College of Ecological Environment and Resources , Qinghai Nationalities University , Xining 810007 , China
| | - Chao Chen
- Guangdong Provincial Key Laboratory of Nano-Micro Materials Research, School of Chemical Biology & Biotechnology , Peking University Shenzhen Graduate School , Shenzhen 518055 , China
| | - Xihong Liu
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province, School of Basic Medical Sciences , Lanzhou University Lanzhou 730000 , China
| | - Dan Li
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province, School of Basic Medical Sciences , Lanzhou University Lanzhou 730000 , China
| | - Tianyu Peng
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province, School of Basic Medical Sciences , Lanzhou University Lanzhou 730000 , China
| | - Xin Liu
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province, School of Basic Medical Sciences , Lanzhou University Lanzhou 730000 , China
| | - Dongxu Yang
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province, School of Basic Medical Sciences , Lanzhou University Lanzhou 730000 , China
| | - Linqing Wang
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province, School of Basic Medical Sciences , Lanzhou University Lanzhou 730000 , China
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14
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Zheng K, Liu X, Feng X. Recent Advances in Metal-Catalyzed Asymmetric 1,4-Conjugate Addition (ACA) of Nonorganometallic Nucleophiles. Chem Rev 2018; 118:7586-7656. [PMID: 30047721 DOI: 10.1021/acs.chemrev.7b00692] [Citation(s) in RCA: 191] [Impact Index Per Article: 31.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
The metal-catalyzed asymmetric conjugate addition (ACA) reaction has emerged as a general and powerful approach for the construction of optically active compounds and is among the most significant and useful reactions in synthetic organic chemistry. In recent years, great progress has been made in this area with the use of various chiral metal complexes based on different chiral ligands. This review provides comprehensive and critical information on the enantioselective 1,4-conjugate addition of nonorganometallic (soft) nucleophiles and their importance in synthetic applications. The literature is covered from the last 10 years, and a number of examples from before 2007 are included as background information. The review is divided into multiple parts according to the type of nucleophile involved in the reaction (such as C-, B-, O-, N-, S-, P-, and Si-centered nucleophiles) and metal catalyst systems used.
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Affiliation(s)
- Ke Zheng
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry , Sichuan University , Chengdu 610064 , P. R. China
| | - Xiaohua Liu
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry , Sichuan University , Chengdu 610064 , P. R. China
| | - Xiaoming Feng
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry , Sichuan University , Chengdu 610064 , P. R. China
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15
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Pellissier H. Synthesis of chiral 3-substituted 3-amino-2-oxindoles through enantioselective catalytic nucleophilic additions to isatin imines. Beilstein J Org Chem 2018; 14:1349-1369. [PMID: 29977400 PMCID: PMC6009130 DOI: 10.3762/bjoc.14.114] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2018] [Accepted: 05/17/2018] [Indexed: 12/14/2022] Open
Abstract
This review collects the recent developments in the synthesis of chiral 3-substituted 3-amino-2-oxindoles based on enantioselective catalytic nucleophilic additions to isatin imines published since the beginning of 2015.
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Affiliation(s)
- Hélène Pellissier
- Aix-Marseille Univ, CNRS, Centrale Marseille, iSm2, Marseille, France
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16
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Kaur J, Chimni SS. Catalytic synthesis of 3-aminooxindoles via addition to isatin imine: an update. Org Biomol Chem 2018; 16:3328-3347. [DOI: 10.1039/c7ob03002a] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
3-Substituted-3-aminooxindoles have attracted the attention of organic chemist to develop different synthetic methodologies for their synthesis using catalysts. This review covers the recent developments.
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Affiliation(s)
- Jasneet Kaur
- Department of Chemistry
- U.G.C. Centre of Advance Study-II
- Guru Nanak Dev University
- Amritsar
- India
| | - Swapandeep Singh Chimni
- Department of Chemistry
- U.G.C. Centre of Advance Study-II
- Guru Nanak Dev University
- Amritsar
- India
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17
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Kaur J, Chauhan P, Singh S, Chimni SS. Journey Heading towards Enantioselective Synthesis Assisted by Organocatalysis. CHEM REC 2017; 18:137-153. [DOI: 10.1002/tcr.201700020] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2017] [Indexed: 12/27/2022]
Affiliation(s)
- Jasneet Kaur
- Department of Chemistry, U.G.C. Centre of Advanced Studies in Chemistry; Guru Nanak Dev University; Amritsar India
| | - Pankaj Chauhan
- Institute of Organic Chemistry; RWTH Aachen University, Germany
| | - Sarbjit Singh
- Department of Chemistry; University of Texas at Dallas, USA
| | - Swapandeep Singh Chimni
- Department of Chemistry, U.G.C. Centre of Advanced Studies in Chemistry; Guru Nanak Dev University; Amritsar India
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18
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Gao M, Willis MC. Enantioselective Three-Component Assembly of β'-Aryl Enones Using a Rhodium-Catalyzed Alkyne Hydroacylation/Aryl Boronic Acid Conjugate Addition Sequence. Org Lett 2017; 19:2734-2737. [PMID: 28485946 DOI: 10.1021/acs.orglett.7b01087] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Rhodium-catalyzed alkyne hydroacylation using alkyl β-S-aldehydes, enantioselective rhodium-catalyzed aryl boronic acid conjugate addition, and sulfide elimination are combined in sequence to provide β'-aryl enones. The reaction sequence is efficient and delivers highly functionalized products with excellent levels of enantiocontrol. Good variation of the three reaction components is demonstrated. The sequence corresponds to the formal regio- and enantioselective monoconjugate addition of aryl boronic acids to dienones.
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Affiliation(s)
- Ming Gao
- Chemistry Research Laboratory, Department of Chemistry, University of Oxford , Mansfield Road, Oxford OX1 3TA, U.K
| | - Michael C Willis
- Chemistry Research Laboratory, Department of Chemistry, University of Oxford , Mansfield Road, Oxford OX1 3TA, U.K
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19
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Jia ZL, Wang Y, Zhao CG, Zhang XH, Xu PF. Highly Enantioselective Construction of Hajos–Wiechert Ketone Skeletons via an Organocatalytic Vinylogous Michael/Stetter Relay Sequence. Org Lett 2017; 19:2130-2133. [DOI: 10.1021/acs.orglett.7b00767] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Affiliation(s)
- Zhi-Long Jia
- State
Key Laboratory of Applied Organic Chemistry, College of Chemistry
and Chemical Engineering, Lanzhou University, Lanzhou 730000, P. R. China
| | - Yao Wang
- School
of Chemistry and Chemical Engineering, Shandong University, Jinan, 250100, P. R. China
| | - Chuan-Gang Zhao
- State
Key Laboratory of Applied Organic Chemistry, College of Chemistry
and Chemical Engineering, Lanzhou University, Lanzhou 730000, P. R. China
| | - Xiao-Hai Zhang
- State
Key Laboratory of Applied Organic Chemistry, College of Chemistry
and Chemical Engineering, Lanzhou University, Lanzhou 730000, P. R. China
| | - Peng-Fei Xu
- State
Key Laboratory of Applied Organic Chemistry, College of Chemistry
and Chemical Engineering, Lanzhou University, Lanzhou 730000, P. R. China
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20
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Chauhan P, Kaya U, Enders D. Advances in Organocatalytic 1,6-Addition Reactions: Enantioselective Construction of Remote Stereogenic Centers. Adv Synth Catal 2017. [DOI: 10.1002/adsc.201601342] [Citation(s) in RCA: 162] [Impact Index Per Article: 23.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Pankaj Chauhan
- Institute of Organic Chemistry; RWTH Aachen University; Landoltweg 1 52074 Aachen Germany
| | - Uğur Kaya
- Institute of Organic Chemistry; RWTH Aachen University; Landoltweg 1 52074 Aachen Germany
| | - Dieter Enders
- Institute of Organic Chemistry; RWTH Aachen University; Landoltweg 1 52074 Aachen Germany
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21
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Reactivity of indole-3-alkoxides in the absence of acids: Rapid synthesis of homo-bisindolylmethanes. Tetrahedron 2016. [DOI: 10.1016/j.tet.2016.10.067] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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22
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Organocatalytic Enantioselective Friedel-Crafts Reaction of Sesamol and Electron-rich Phenols with Alkylideneindolenine Intermediates Generated from Arylsulfonyl Indoles. ChemistrySelect 2016. [DOI: 10.1002/slct.201601425] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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23
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Wang Y, Jiang L, Li L, Dai J, Xiong D, Shao Z. An Arylation Strategy to Propargylamines: Catalytic Asymmetric Friedel-Crafts-type Arylation Reactions of C-Alkynyl Imines. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201608918] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Yingcheng Wang
- Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education, School of Chemical Science and Technology; Yunnan University; Kunming 650091 China
| | - Liang Jiang
- Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education, School of Chemical Science and Technology; Yunnan University; Kunming 650091 China
| | - Long Li
- Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education, School of Chemical Science and Technology; Yunnan University; Kunming 650091 China
| | - Jun Dai
- Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education, School of Chemical Science and Technology; Yunnan University; Kunming 650091 China
| | - Dan Xiong
- Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education, School of Chemical Science and Technology; Yunnan University; Kunming 650091 China
| | - Zhihui Shao
- Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education, School of Chemical Science and Technology; Yunnan University; Kunming 650091 China
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24
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Wang Y, Jiang L, Li L, Dai J, Xiong D, Shao Z. An Arylation Strategy to Propargylamines: Catalytic Asymmetric Friedel-Crafts-type Arylation Reactions of C-Alkynyl Imines. Angew Chem Int Ed Engl 2016; 55:15142-15146. [DOI: 10.1002/anie.201608918] [Citation(s) in RCA: 51] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2016] [Revised: 10/03/2016] [Indexed: 11/11/2022]
Affiliation(s)
- Yingcheng Wang
- Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education, School of Chemical Science and Technology; Yunnan University; Kunming 650091 China
| | - Liang Jiang
- Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education, School of Chemical Science and Technology; Yunnan University; Kunming 650091 China
| | - Long Li
- Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education, School of Chemical Science and Technology; Yunnan University; Kunming 650091 China
| | - Jun Dai
- Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education, School of Chemical Science and Technology; Yunnan University; Kunming 650091 China
| | - Dan Xiong
- Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education, School of Chemical Science and Technology; Yunnan University; Kunming 650091 China
| | - Zhihui Shao
- Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education, School of Chemical Science and Technology; Yunnan University; Kunming 650091 China
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25
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Stereoselective reactions of nitro compounds in the synthesis of natural compound analogs and active pharmaceutical ingredients. Tetrahedron 2016. [DOI: 10.1016/j.tet.2016.07.067] [Citation(s) in RCA: 95] [Impact Index Per Article: 11.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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26
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Liu RL, Yan YY, Zhang T, Zhang XJ, Yan M. A practical synthesis of optically active δ-nitro-α-ketoesters and 4-cyclohexyl-proline catalyzed by chiral squamides. ACTA ACUST UNITED AC 2015. [DOI: 10.1016/j.tetasy.2015.10.009] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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27
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Zhou D, Huang Z, Yu X, Wang Y, Li J, Wang W, Xie H. A Quinine-Squaramide Catalyzed Enantioselective Aza-Friedel–Crafts Reaction of Cyclic Trifluoromethyl Ketimines with Naphthols and Electron-Rich Phenols. Org Lett 2015; 17:5554-7. [DOI: 10.1021/acs.orglett.5b02668] [Citation(s) in RCA: 65] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
| | | | | | | | | | - Wei Wang
- Department
of Chemistry and Chemical Biology, University of New Mexico, Albuquerque, New Mexico 87131-0001, United States
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28
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Filloux C, Rovis T. Rh(I)-bisphosphine-catalyzed asymmetric, intermolecular hydroheteroarylation of α-substituted acrylate derivatives. J Am Chem Soc 2015; 137:508-17. [PMID: 25545834 PMCID: PMC4304441 DOI: 10.1021/ja511445x] [Citation(s) in RCA: 86] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2014] [Indexed: 01/17/2023]
Abstract
Asymmetric hydroheteroarylation of alkenes represents a convenient entry to elaborated heterocyclic motifs. While chiral acids are known to mediate asymmetric addition of electron-rich heteroarenes to Michael acceptors, very few methods exploit transition metals to catalyze alkylation of heterocycles with olefins via a C-H activation, migratory insertion sequence. Herein, we describe the development of an asymmetric, intermolecular hydroheteroarylation reaction of α-substituted acrylates with benzoxazoles. The reaction provides 2-substitued benzoxazoles in moderate to excellent yields and good to excellent enantioselectivities. Notably, a series of mechanistic studies appears to contradict a pathway involving enantioselective protonation of a Rh(I)-enolate, despite the fact that such a mechanism is invoked almost unanimously in the related addition of aryl boronic acids to methacrylate derivatives. Evidence suggests instead that migratory insertion or beta-hydride elimination is enantiodetermining and that isomerization of a Rh(I)-enolate to a Rh(I)-heterobenzyl species insulates the resultant α-stereocenter from epimerization. A bulky ligand, CTH-(R)-Xylyl-P-Phos, is crucial for reactivity and enantioselectivity, as it likely discourages undesired ligation of benzoxazole substrates or intermediates to on- or off-cycle rhodium complexes and attenuates coordination-promoted product epimerization.
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Affiliation(s)
- Claire
M. Filloux
- Department
of Chemistry, Colorado State University, Fort Collins, Colorado 80523, United States
| | - Tomislav Rovis
- Department
of Chemistry, Colorado State University, Fort Collins, Colorado 80523, United States
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29
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Zhang JW, Liu XW, Gu Q, Shi XX, You SL. Enantioselective synthesis of 4,5,6,7-tetrahydroindoles via olefin cross-metathesis/intramolecular Friedel–Crafts alkylation reaction of pyrroles. Org Chem Front 2015. [DOI: 10.1039/c5qo00034c] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
A sequential catalysis involving olefin cross-metathesis/asymmetric intramolecular Friedel–Crafts alkylation of pyrrole derivatives has been developed.
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Affiliation(s)
- Jun-Wei Zhang
- State Key Laboratory of Organometallic Chemistry
- Shanghai Institute of Organic Chemistry
- Chinese Academy of Sciences
- Shanghai 200032
- China
| | - Xiao-Wei Liu
- State Key Laboratory of Organometallic Chemistry
- Shanghai Institute of Organic Chemistry
- Chinese Academy of Sciences
- Shanghai 200032
- China
| | - Qing Gu
- State Key Laboratory of Organometallic Chemistry
- Shanghai Institute of Organic Chemistry
- Chinese Academy of Sciences
- Shanghai 200032
- China
| | - Xiao-Xin Shi
- School of Pharmacy
- East China University of Science and Technology
- Shanghai 200237
- China
| | - Shu-Li You
- State Key Laboratory of Organometallic Chemistry
- Shanghai Institute of Organic Chemistry
- Chinese Academy of Sciences
- Shanghai 200032
- China
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30
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Kaur J, Chimni SS, Mahajan S, Kumar A. Stereoselective synthesis of 3-amino-2-oxindoles from isatin imines: new scaffolds for bioactivity evaluation. RSC Adv 2015. [DOI: 10.1039/c5ra06969f] [Citation(s) in RCA: 81] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
3-Substituted-3-aminooxindole motifs constitute the core structure of a number of natural products and drug candidates.
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Affiliation(s)
- Jasneet Kaur
- Department of Chemistry
- U.G.C. Centre of Advance Studies in Chemistry
- Guru Nanak Dev University
- Amritsar
- India
| | - Swapandeep Singh Chimni
- Department of Chemistry
- U.G.C. Centre of Advance Studies in Chemistry
- Guru Nanak Dev University
- Amritsar
- India
| | - Suhel Mahajan
- Department of Chemistry
- U.G.C. Centre of Advance Studies in Chemistry
- Guru Nanak Dev University
- Amritsar
- India
| | - Akshay Kumar
- Department of Chemistry
- DAV University
- Jalandhar
- India
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31
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Aromatic l-prolinamide-catalyzed asymmetric Michael addition of aldehydes to nitroalkenes. ACTA ACUST UNITED AC 2014. [DOI: 10.1016/j.tetasy.2014.11.006] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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32
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Chiral bifunctional squaramide catalyzed asymmetric Michael addition of ethyl α-nitroacetate to β,γ-unsaturated α-ketoesters. Tetrahedron 2014. [DOI: 10.1016/j.tet.2014.07.041] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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33
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Beltrá J, Gimeno MC, Herrera RP. A new approach for the synthesis of bisindoles through AgOTf as catalyst. Beilstein J Org Chem 2014; 10:2206-14. [PMID: 25246979 PMCID: PMC4168942 DOI: 10.3762/bjoc.10.228] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2014] [Accepted: 08/27/2014] [Indexed: 11/23/2022] Open
Abstract
A novel approach for the catalyzed formation of bisindolylmethane derivatives (BIMs) is described. This methodology is the unique example where AgOTf has been successfully used for the activation of aldehydes, giving easy access to a broad range of bisindolyl derivatives with excellent results. Moreover, the simplicity and easy operational methodology using a small amount of commercially available AgOTf (1-3 mol %), one of the lowest catalytic charge used in this process to date, makes this procedure an alternative approach for this interesting and appealing reaction.
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Affiliation(s)
- Jorge Beltrá
- Departamento de Química Inorgánica. Instituto de Síntesis Química y Catálisis Homogénea (ISQCH), CSIC-Universidad de Zaragoza. E-50009 Zaragoza, Spain
| | - M Concepción Gimeno
- Departamento de Química Inorgánica. Instituto de Síntesis Química y Catálisis Homogénea (ISQCH), CSIC-Universidad de Zaragoza. E-50009 Zaragoza, Spain
| | - Raquel P Herrera
- Departamento de Química Orgánica. Instituto de Síntesis Química y Catálisis Homogénea (ISQCH), CSIC-Universidad de Zaragoza. E-50009 Zaragoza, Spain
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34
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Liu Y, Wang Q, Wang Y, Song H, Zhou Z. Chiral Bifunctional Squaramide-Catalyzed Highly Enantioselective Michael Addition of Allomaltol to β,γ-Unsaturated α-Ketoesters. ChemCatChem 2014. [DOI: 10.1002/cctc.201402168] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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35
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Hack D, Loh CCJ, Hartmann JM, Raabe G, Enders D. Merging gold and organocatalysis: a facile asymmetric synthesis of annulated pyrroles. Chemistry 2014; 20:3917-21. [PMID: 24590817 PMCID: PMC4238261 DOI: 10.1002/chem.201400407] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2014] [Indexed: 11/16/2022]
Abstract
The combination of cinchona-alkaloid-derived primary amine and Au(I) -phosphine catalysts allowed the selective C-H functionalization of two adjacent carbon atoms of pyrroles under mild reaction conditions. This sequential dual activation provides seven-membered-ring-annulated pyrrole derivatives in excellent yields and enantioselectivities.
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Affiliation(s)
- Daniel Hack
- Institute of Organic Chemistry, RWTH Aachen University, Landoltweg 1, 52074 Aachen (Germany), Fax: (+49) 241-809-2127
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36
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Kumar A, Kaur J, Chauhan P, Singh Chimni S. Organocatalytic Asymmetric Friedel-Crafts Reaction of Sesamol with Isatins: Access to Biologically Relevant 3-Aryl-3-hydroxy-2-oxindoles. Chem Asian J 2014; 9:1305-10. [DOI: 10.1002/asia.201301546] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2013] [Revised: 01/07/2014] [Indexed: 11/06/2022]
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37
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Kaur J, Kumar A, Chimni SS. Organocatalytic asymmetric Friedel–Crafts reaction of 1-naphthols with isatins: an enantioselective synthesis of 3-aryl-3-hydroxy-2-oxindoles. Tetrahedron Lett 2014. [DOI: 10.1016/j.tetlet.2014.02.054] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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38
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Zanwar MR, Kavala V, Gawande SD, Kuo CW, Huang WC, Kuo TS, Huang HN, He CH, Yao CF. FeCl3 Catalyzed Regioselective C-Alkylation of Indolylnitroalkenes with Amino Group Substituted Arenes. J Org Chem 2014; 79:1842-9. [DOI: 10.1021/jo4025368] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Manoj R. Zanwar
- Department
of Chemistry, National Taiwan Normal University, 88, Sec. 4, Tingchow Road, Taipei, Taiwan 116, R.O.C
| | - Veerababurao Kavala
- Department
of Chemistry, National Taiwan Normal University, 88, Sec. 4, Tingchow Road, Taipei, Taiwan 116, R.O.C
| | - Sachin D. Gawande
- Department
of Chemistry, National Taiwan Normal University, 88, Sec. 4, Tingchow Road, Taipei, Taiwan 116, R.O.C
| | - Chun-Wei Kuo
- Department
of Chemistry, National Taiwan Normal University, 88, Sec. 4, Tingchow Road, Taipei, Taiwan 116, R.O.C
| | - Wen-Chang Huang
- Department
of Chemistry, National Taiwan Normal University, 88, Sec. 4, Tingchow Road, Taipei, Taiwan 116, R.O.C
| | - Ting-Shen Kuo
- Department
of Chemistry, National Taiwan Normal University, 88, Sec. 4, Tingchow Road, Taipei, Taiwan 116, R.O.C
| | - Hsiu-Ni Huang
- Department
of Chemistry, National Taiwan Normal University, 88, Sec. 4, Tingchow Road, Taipei, Taiwan 116, R.O.C
| | - Chiu-Hui He
- Department
of Chemistry, National Taiwan Normal University, 88, Sec. 4, Tingchow Road, Taipei, Taiwan 116, R.O.C
| | - Ching-Fa Yao
- Department
of Chemistry, National Taiwan Normal University, 88, Sec. 4, Tingchow Road, Taipei, Taiwan 116, R.O.C
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39
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Halimehjani AZ, Farvardin MV, Zanussi HP, Ranjbari MA, Fattahi M. Friedel–Crafts alkylation of N,N-dialkylanilines with nitroalkenes catalyzed by heteropolyphosphotungstic acid in water. ACTA ACUST UNITED AC 2014. [DOI: 10.1016/j.molcata.2013.09.037] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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40
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Fu N, Zhang L, Luo S, Cheng JP. Chiral primary amine catalysed asymmetric conjugate addition of azoles to α-substituted vinyl ketones. Org Chem Front 2014. [DOI: 10.1039/c3qo00027c] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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41
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Organocatalytic asymmetric synthesis of 3(2H)-furanones with adjacent quaternary and tertiary stereocenters. Tetrahedron Lett 2013. [DOI: 10.1016/j.tetlet.2013.09.056] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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42
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Scheffler U, Mahrwald R. Recent Advances in Organocatalytic Methods for Asymmetric CC Bond Formation. Chemistry 2013; 19:14346-96. [DOI: 10.1002/chem.201301996] [Citation(s) in RCA: 178] [Impact Index Per Article: 16.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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43
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Chauhan P, Chimni SS. Organocatalytic enantioselective aza-Friedel–Crafts reaction of sesamols with N-sulfonylimines catalyzed by 6′-OH Cinchona alkaloids. Tetrahedron Lett 2013. [DOI: 10.1016/j.tetlet.2013.06.032] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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44
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Murai K, Matsushita T, Nakamura A, Hyogo N, Nakajima J, Fujioka H. Kinetic Resolution of β-Substituted Olefinic Carboxylic Acids by Asymmetric Bromolactonization. Org Lett 2013; 15:2526-9. [DOI: 10.1021/ol401007u] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- Kenichi Murai
- Graduate School of Pharmaceutical Sciences, Osaka University, 1-6 Yamada-oka, Suita, Osaka 565-0871, Japan
| | - Tomoyo Matsushita
- Graduate School of Pharmaceutical Sciences, Osaka University, 1-6 Yamada-oka, Suita, Osaka 565-0871, Japan
| | - Akira Nakamura
- Graduate School of Pharmaceutical Sciences, Osaka University, 1-6 Yamada-oka, Suita, Osaka 565-0871, Japan
| | - Norimichi Hyogo
- Graduate School of Pharmaceutical Sciences, Osaka University, 1-6 Yamada-oka, Suita, Osaka 565-0871, Japan
| | - Junki Nakajima
- Graduate School of Pharmaceutical Sciences, Osaka University, 1-6 Yamada-oka, Suita, Osaka 565-0871, Japan
| | - Hiromichi Fujioka
- Graduate School of Pharmaceutical Sciences, Osaka University, 1-6 Yamada-oka, Suita, Osaka 565-0871, Japan
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45
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Wang Z, Zhao K, Fu J, Zhang J, Yin W, Tang Y. Organocatalytic 1,4-conjugate addition of ascorbic acid to α,β-unsaturated aldehydes: bio-inspired total syntheses of leucodrin, leudrin and proposed structure of dilaspirolactone. Org Biomol Chem 2013; 11:2093-7. [PMID: 23440072 DOI: 10.1039/c3ob00046j] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The organocatalytic additions of ascorbic acid to various α,β-unsaturated aldehydes via tandem 1,4-conjugate addition/hemiacetalization/hemiketalization were developed, which provided a rapid entry into the 5-5-5 spirodilactone cores of a family of ascorbylated natural products. Based on the described chemistry, total syntheses of leucodrin, leudrin and the proposed structure of dilaspirolactone were achieved.
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Affiliation(s)
- Zhaofeng Wang
- The Comprehensive AIDS Research Center, Department of Pharmacology and Pharmaceutical Sciences, School of Medicine, Tsinghua University, Beijing 100084, China
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46
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Chauhan P, Chimni SS. Organocatalytic asymmetric synthesis of 3-amino-2-oxindole derivatives bearing a tetra-substituted stereocenter. ACTA ACUST UNITED AC 2013. [DOI: 10.1016/j.tetasy.2013.03.002] [Citation(s) in RCA: 160] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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47
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Wu L, Li G, Fu Q, Yu L, Tang Z. Organocatalytic asymmetric Michael reaction with acylsilane donors. Org Biomol Chem 2013; 11:443-7. [DOI: 10.1039/c2ob26950c] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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48
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Chauhan P, Chimni SS. Mechanochemistry assisted asymmetric organocatalysis: A sustainable approach. Beilstein J Org Chem 2012; 8:2132-41. [PMID: 23243475 PMCID: PMC3520570 DOI: 10.3762/bjoc.8.240] [Citation(s) in RCA: 72] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2012] [Accepted: 11/28/2012] [Indexed: 11/23/2022] Open
Abstract
Ball-milling and pestle and mortar grinding have emerged as powerful methods for the development of environmentally benign chemical transformations. Recently, the use of these mechanochemical techniques in asymmetric organocatalysis has increased. This review highlights the progress in asymmetric organocatalytic reactions assisted by mechanochemical techniques.
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Affiliation(s)
- Pankaj Chauhan
- U.G.C. Sponsored Centre for Advance Studies in Chemistry, Department of Chemistry Guru Nanak Dev University, Amritsar, 143005, India, Fax: (+)91-183-2258820
| | - Swapandeep Singh Chimni
- U.G.C. Sponsored Centre for Advance Studies in Chemistry, Department of Chemistry Guru Nanak Dev University, Amritsar, 143005, India, Fax: (+)91-183-2258820
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49
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Chauhan P, Kaur J, Chimni SS. Asymmetric Organocatalytic Addition Reactions of Maleimides: A Promising Approach Towards the Synthesis of Chiral Succinimide Derivatives. Chem Asian J 2012; 8:328-46. [DOI: 10.1002/asia.201200684] [Citation(s) in RCA: 103] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2012] [Indexed: 01/27/2023]
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50
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Chauhan P, Chimni SS. Grinding-Assisted Asymmetric Organocatalysis: A Solvent-free Approach to the Formation of Vicinal Quaternary and Tertiary Stereocenters. ASIAN J ORG CHEM 2012. [DOI: 10.1002/ajoc.201200048] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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