1
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Du X, Zhang WM, Zhang XG, Tu HY. Palladium‐Catalyzed Selective C‐F Bond Cleavage of Trifluoropropanamides Leading to (Z)‐N‐α‐Fluorovinylindoles. Adv Synth Catal 2022. [DOI: 10.1002/adsc.202200352] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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2
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Nie Z, Lv H, Yang T, Su M, Luo W, Liu Q, Guo C. Synthesis of Non‐Terminal Alkenyl Ethers, Alkenyl Sulfides, and N‐Vinylazoles from Arylaldehydes or Diarylketones, DMSO and O, S, N‐Nucleophiles. Adv Synth Catal 2022. [DOI: 10.1002/adsc.202200020] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Zhiwen Nie
- College of Chemistry and Chemical Engineering Hunan University Changsha 410082 People's Republic of China
| | - Huifang Lv
- College of Chemistry and Chemical Engineering Hunan University Changsha 410082 People's Republic of China
| | - Tonglin Yang
- College of Chemistry and Chemical Engineering Hunan University Changsha 410082 People's Republic of China
| | - Miaodong Su
- College of Chemistry and Chemical Engineering Hunan University Changsha 410082 People's Republic of China
| | - Weiping Luo
- College of Chemistry and Chemical Engineering Hunan University Changsha 410082 People's Republic of China
| | - Qiang Liu
- College of Chemistry and Chemical Engineering Hunan University Changsha 410082 People's Republic of China
| | - Cancheng Guo
- College of Chemistry and Chemical Engineering Hunan University Changsha 410082 People's Republic of China
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3
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Rao MLN, Nand S, Murty VN. Metal‐Catalyzed Divergent Synthetic Methods for Pyrrolocoumarins and Furocoumarins. ASIAN J ORG CHEM 2021. [DOI: 10.1002/ajoc.202100604] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Maddali L. N. Rao
- Department of Chemistry Indian Institute of Technology Kanpur Kanpur 208016 India
| | - Sachchida Nand
- Department of Chemistry Indian Institute of Technology Kanpur Kanpur 208016 India
| | - Venneti N. Murty
- Department of Chemistry Indian Institute of Technology Kanpur Kanpur 208016 India
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4
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Xu PP, Liao JY, Zhang JJ, Shi WM, Liang C, Su GF, Mo DL. Nickel(II)-Catalyzed [3 + 2] Cycloaddition of Nitrones and Allenoates to Access N-Vinylindoles and N-Vinylpyrroles. Org Lett 2021; 23:7482-7486. [PMID: 34533319 DOI: 10.1021/acs.orglett.1c02695] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A variety of N-vinylindoles and N-vinylpyrroles were prepared in moderate to good yields through the nickel(II)-catalyzed [3 + 2] cycloaddition of α,β-unsaturated nitrones with allenoates under mild reaction conditions. A rational mechanism for the formation of N-vinylindoles was proposed based on the 18O-labeled experiments and key intermediates detected by high-resolution mass spectrometry trace experiments. The present method highlights a nickel(II)-controlled cyclization, atom-economical reaction, broad substrate scope, good functional group tolerance, and high Z-stereoselectivity for the enamine bond.
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Affiliation(s)
- Pei-Pei Xu
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, Collaborative Innovation Center for Guangxi Ethnic Medicine; School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, 15 Yu Cai Road, Guilin 541004, China
| | - Jun-Yi Liao
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, Collaborative Innovation Center for Guangxi Ethnic Medicine; School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, 15 Yu Cai Road, Guilin 541004, China
| | - Jia-Jie Zhang
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, Collaborative Innovation Center for Guangxi Ethnic Medicine; School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, 15 Yu Cai Road, Guilin 541004, China
| | - Wei-Min Shi
- School of Medicine, Guangxi University of Science and Technology, 257 Liu Shi Road, Liuzhou 545006, China
| | - Cui Liang
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, Collaborative Innovation Center for Guangxi Ethnic Medicine; School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, 15 Yu Cai Road, Guilin 541004, China
| | - Gui-Fa Su
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, Collaborative Innovation Center for Guangxi Ethnic Medicine; School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, 15 Yu Cai Road, Guilin 541004, China
| | - Dong-Liang Mo
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, Collaborative Innovation Center for Guangxi Ethnic Medicine; School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, 15 Yu Cai Road, Guilin 541004, China
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5
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Beletskaya IP, Naájera C, Yus M. Catalysis and regioselectivity in hydrofunctionalization reactions of unsaturated carbon bonds. Part II. Hydroamination. RUSSIAN CHEMICAL REVIEWS 2020. [DOI: 10.1070/rcr4953] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
This review continues consideration of the regioselectivity problem in the catalyzed hydrofunctionalization of unsaturated organic compounds and addresses hydroamination of unsaturated hydrocarbons. Particular parts of the review deal with reactions of alkenes, alkynes, allenes and dienes. It is shown that the selectivity of hydroamination depends on the natures of the reactants and the catalyst. Conditions of the reactions are described; in some cases, reaction mechanisms are discussed. Reactions for which divergent regioselectivity is possible are noted.
The bibliography includes 249 references.
Dedicated to the memory of V.V.Markovnikov.
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6
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Affiliation(s)
- Sripati Jana
- RWTH Aachen University, Institute of Organic Chemistry, Landoltweg 1, D-52074 Aachen, Germany
| | - Feifei He
- RWTH Aachen University, Institute of Organic Chemistry, Landoltweg 1, D-52074 Aachen, Germany
| | - Rene M. Koenigs
- RWTH Aachen University, Institute of Organic Chemistry, Landoltweg 1, D-52074 Aachen, Germany
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7
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Yang W, Wei L, Yi F, Cai M. Heterogeneous Gold(III)-Catalysed Double Hydroamination of 2-Alkynylanilines with Terminal Alkynes Leading to N-Vinylindoles. JOURNAL OF CHEMICAL RESEARCH 2018. [DOI: 10.3184/174751918x15403975136742] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Heterogeneous double hydroamination of 2-alkynylanilines with terminal alkynes was achieved by using a magnetic nanoparticles-supported gold(III)-2,2′-bipyridine complex and silver trifluoromethanesulfonate as catalysts to afford the corresponding N-vinylindoles in moderate to good yields under mild and solvent-free conditions. The heterogeneous gold catalyst can easily be separated from the reaction mixture by simply applying an external magnet and can be recycled up to seven times without significant loss of activity.
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Affiliation(s)
- Weisen Yang
- Fujian Key Laboratory of Eco-Industrial Green Technology, College of Ecology and Resources Engineering, Wuyi University, Wuyishan 354300, P.R. China
- College of Chemistry & Chemical Engineering, Jiangxi Normal University, Nanchang 330022, P.R. China
| | - Li Wei
- College of Chemistry & Chemical Engineering, Jiangxi Normal University, Nanchang 330022, P.R. China
| | - Feiyan Yi
- College of Chemistry & Chemical Engineering, Jiangxi Normal University, Nanchang 330022, P.R. China
| | - Mingzhong Cai
- College of Chemistry & Chemical Engineering, Jiangxi Normal University, Nanchang 330022, P.R. China
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8
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Liu LD, Lei ZL, Wang H, Bian M, Liu ZJ, Liu JT, Hu XJ. Inorganic base-mediated stereoselective hydroamination of arylalkynes with imidazole: An efficient access to N -vinylimidazoles. Tetrahedron 2018. [DOI: 10.1016/j.tet.2018.07.022] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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9
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Patel M, Sushmita, Verma AK. Copper-catalyzed stereo- and chemoselective synthesis of enaminones via Michael type addition. J CHEM SCI 2018. [DOI: 10.1007/s12039-018-1465-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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10
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Zhou M, Tan X, Hu Y, Shen HC, Qian X. Highly Chemo- and Regioselective Vinylation of N-Heteroarenes with Vinylsulfonium Salts. J Org Chem 2018; 83:8627-8635. [PMID: 29799743 DOI: 10.1021/acs.joc.8b00682] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
An efficient chemo- and regioselective N-vinylation of N-heteroarenes has been developed using vinylsulfonium salts. The reaction proceeded under mild and transition-metal-free conditions and consistently provided moderate to high yields of vinylation products with 100% E-stereoselectivity. This reaction is also highly chemoselective, and compatible with a variety of functional groups, such as -NHR, -NH2, -OH, -COOH, ester, etc.
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Affiliation(s)
- Mingwei Zhou
- Shanghai Key Laboratory of Chemical Biology , East China University of Science and Technology , Shanghai 200237 , China.,Roche Innovation Center Shanghai , Roche Pharmaceutical Research and Early Development , Shanghai 201203 , China
| | - Xuefei Tan
- Roche Innovation Center Shanghai , Roche Pharmaceutical Research and Early Development , Shanghai 201203 , China
| | - Yimin Hu
- Roche Innovation Center Shanghai , Roche Pharmaceutical Research and Early Development , Shanghai 201203 , China
| | - Hong C Shen
- Roche Innovation Center Shanghai , Roche Pharmaceutical Research and Early Development , Shanghai 201203 , China
| | - Xuhong Qian
- Shanghai Key Laboratory of Chemical Biology , East China University of Science and Technology , Shanghai 200237 , China
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11
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Garg V, Kumar P, Verma AK. Chemo-, Regio-, and Stereoselective N-Alkenylation of Pyrazoles/Benzpyrazoles Using Activated and Unactivated Alkynes. J Org Chem 2017; 82:10247-10262. [PMID: 28861995 DOI: 10.1021/acs.joc.7b01746] [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
Transition-metal-free chemo-, regio-, and stereoselective synthesis of (Z) and (E) styryl pyrazoles and benzpyrazoles by the addition of N-heterocycles onto functionalized terminal and internal alkynes using a super basic solution of KOH/DMSO has been described. The stereochemical outcome of the reaction was governed by time and quantity of the base. The reaction of pyrazoles and benzpyrazoles onto alkynes takes place chemoselectively without affecting the free -NH2 group of pyrazoles and -OH group of alkynes. The designed protocol was well implemented on alkynes bearing long alkyl chain, an alicyclic ring, hydroxy, ether, and ester functionality, which offer the N-alkenylated products in good yields. This developed methodology also provides easy access for the synthesis of bis-vinylated heterocycles. The presence of free -NH2, -OH, -COOR, and halo group in styryl pyrazoles, could be further utilized for synthetic elaboration, which is advantageous for biological evaluation. For the first time, we have disclosed the base-mediated conversion of (Z)-styryl pyrazoles to (E)-styryl pyrazoles in KOH/DMSO system. The cis-trans isomerization was supported by the control experiments and deuterium labeling studies.
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Affiliation(s)
- Vineeta Garg
- Synthetic Organic Chemistry Research Laboratory, Department of Chemistry, University of Delhi , Delhi 110007, India
| | - Pradeep Kumar
- Synthetic Organic Chemistry Research Laboratory, Department of Chemistry, University of Delhi , Delhi 110007, India
| | - Akhilesh K Verma
- Synthetic Organic Chemistry Research Laboratory, Department of Chemistry, University of Delhi , Delhi 110007, India
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12
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Abstract
Inter- or intramolecular hydroamination reactions are a paradigmatic example of modern sustainable organic chemistry, as they are a catalytic, 100% atom-economical, and waste-free process of fundamental simplicity in which an amine is added to an alkyne substrate. Many enamines are found in many natural and synthetic compounds possessing interesting physiological and biological activities. The development of synthetic protocols for such molecules and their transformation is a persistent research topic in pharmaceutical and organic chemistry. Hydroamination is conspicuously superior to the other accessible methods, such as the imination of ketones or the aminomercuration/demercuration of alkynes, that involve the stoichiometric use of toxic reagents. Additionally, the hydroamination of alkyne substrates has been successfully employed as a key step in synthesizing target molecules through total syntheses containing substituted indoles, pyrroles, imidazoles, and other heterocycles as core moieties. Many research groups have explored inter- or intramolecular hydroamination of alkynes for the synthesis of diversely substituted nitrogen heterocycles using expensive metal catalysts. However, in contrast to metal-catalyzed hydroamination, the base-mediated hydroamination of alkynes has not been extensively studied. Various inorganic (such as hydroxides, phosphates, and carbonates) and organic bases have been proven to be valuable reagents for achieving the hydroamination process. This method represents an attractive strategy for the construction of a broad range of nitrogen-containing compounds that prevents the formation of byproducts in the creation of a C-N linkage. The presence of a base is thought to facilitate the attack of nitrogen nucleophiles, such as indoles, pyrroles, and imidazoles, on unsaturated carbon substrates through the activation of the triple bond and thus transforming the electron-rich alkyne into an electrophile. In the past few years, we have been involved in the development of methods for the nucleophilic addition of N-heterocycles onto terminal and internal alkynes using alkali base catalysts to achieve new carbon-nitrogen bond-forming reactions. During our study, we discovered the regioselective preferential nucleophilic addition of N-heterocycles onto the haloarylalkyne over N-arylation of the aryl halide. In this Account, we summarize our latest achievements in regio-, stereo-, and chemoselective hydroamination chemistry of N-nucleophiles with alkynes using a superbasic medium to produce a broad range of highly functionalized vinyl and styryl enamines, which are valuable and versatile synthetic intermediates for the synthesis of bioactive compounds. Interestingly, the stereoselectivity of the addition products (kinetically stable Z and thermodynamically stable E isomers) was found to be dependent upon time. It is worthwhile to note that hydroaminated products formed by the addition reaction can further be utilized for the synthesis of indolo-/pyrrolo[2,1-a]isoquinolines, naphthyridines, and bisindolo/pyrrolo[2,1-a]isoquinolinesvia tandem cyclization. This chemistry is expected to find application in organic synthesis for constructing a diverse variety of fused π-conjugated compounds, enaminones, and C-C coupled products.
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Affiliation(s)
- Monika Patel
- Department of Chemistry, University of Delhi, Delhi-110007, India
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13
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Patel M, Saunthwal RK, Dhaked DK, Bharatam PV, Verma AK. Metal-free Intermolecular Hydrophenoxylation of Aryl Alkynes. ASIAN J ORG CHEM 2015. [DOI: 10.1002/ajoc.201500479] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Monika Patel
- Department of Chemistry; University of Delhi; Delhi- 110007 India
| | | | - Devendra K. Dhaked
- Department of Medicinal Chemistry; NIPER, S.A.S. Nagar; Mohali Punjab 160062 India
| | - Prasad V. Bharatam
- Department of Medicinal Chemistry; NIPER, S.A.S. Nagar; Mohali Punjab 160062 India
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14
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Mahdavi M, Hariri R, Saeedi M, Foroumadi A, Shafiee A, Akbarzadeh T. Synthesis of new benzo[f]imidazo[1,2-d][1,4]oxazepines: AgNO3-mediated intramolecular hydroamination. Tetrahedron Lett 2015. [DOI: 10.1016/j.tetlet.2015.11.014] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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15
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Patel M, Saunthwal RK, Dhaked DK, Bharatam PV, Verma AK. Nucleophilic Addition versus SNAr Study: Chemo-, Regio- and Stereoselective Hydrothiolation of Haloaryl Alkynes over S-Arylation of Aryl Halides. ASIAN J ORG CHEM 2015. [DOI: 10.1002/ajoc.201500239] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Affiliation(s)
- Monika Patel
- Department of Chemistry; University of Delhi; Delhi- 110007 India
| | | | - Devendra K. Dhaked
- Department of Medicinal Chemistry, NIPER, S.A.S. Nagar, Mohali; Punjab 160062 India
| | - Prasad V. Bharatam
- Department of Medicinal Chemistry, NIPER, S.A.S. Nagar, Mohali; Punjab 160062 India
| | - Akhilesh K. Verma
- Department of Chemistry; University of Delhi; Delhi- 110007 India
- School of Physical Sciences (SPS); Jawaharlal Nehru University; Delhi- 110067 India
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16
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Coman SM, Parvulescu VI. Nonprecious Metals Catalyzing Hydroamination and C–N Coupling Reactions. Org Process Res Dev 2015. [DOI: 10.1021/acs.oprd.5b00010] [Citation(s) in RCA: 79] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Simona M. Coman
- Department of Organic Chemistry,
Biochemistry and Catalysis, Faculty of Chemistry, University of Bucharest, Bdul Regina Elisabeta 4-12, Bucharest 030016, Romania
| | - Vasile I. Parvulescu
- Department of Organic Chemistry,
Biochemistry and Catalysis, Faculty of Chemistry, University of Bucharest, Bdul Regina Elisabeta 4-12, Bucharest 030016, Romania
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17
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Huang L, Arndt M, Gooßen K, Heydt H, Gooßen LJ. Late Transition Metal-Catalyzed Hydroamination and Hydroamidation. Chem Rev 2015; 115:2596-697. [DOI: 10.1021/cr300389u] [Citation(s) in RCA: 739] [Impact Index Per Article: 82.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Liangbin Huang
- Department of Chemistry, TU Kaiserslautern, Erwin-Schrödinger-Strasse Geb. 54, 67663 Kaiserslautern, Germany
| | - Matthias Arndt
- Department of Chemistry, TU Kaiserslautern, Erwin-Schrödinger-Strasse Geb. 54, 67663 Kaiserslautern, Germany
| | - Käthe Gooßen
- Department of Chemistry, TU Kaiserslautern, Erwin-Schrödinger-Strasse Geb. 54, 67663 Kaiserslautern, Germany
| | - Heinrich Heydt
- Department of Chemistry, TU Kaiserslautern, Erwin-Schrödinger-Strasse Geb. 54, 67663 Kaiserslautern, Germany
| | - Lukas J. Gooßen
- Department of Chemistry, TU Kaiserslautern, Erwin-Schrödinger-Strasse Geb. 54, 67663 Kaiserslautern, Germany
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18
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Bahri J, Blieck R, Jamoussi B, Taillefer M, Monnier F. Hydroamination of terminal alkynes with secondary amines catalyzed by copper: regioselective access to amines. Chem Commun (Camb) 2015; 51:11210-2. [DOI: 10.1039/c5cc02677f] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A simple and convenient copper-catalyzed hydroamination of arylacetylenes with secondary amines has been performed giving a simple access to aliphatic amines after reduction of the hydroaminated products (E-enamines).
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Affiliation(s)
- Janet Bahri
- Ecole Nationale Supérieure de Chimie de Montpellier
- Institut Charles Gerhardt
- CNRS UMR 5253
- AM2N
- 34296 Montpellier Cedex 05
| | - Rémi Blieck
- Ecole Nationale Supérieure de Chimie de Montpellier
- Institut Charles Gerhardt
- CNRS UMR 5253
- AM2N
- 34296 Montpellier Cedex 05
| | - Bassem Jamoussi
- Laboratoire de Chimie
- Institut Supérieur d'Education et de Formation Continue
- Le Bardo
- Tunisia
| | - Marc Taillefer
- Ecole Nationale Supérieure de Chimie de Montpellier
- Institut Charles Gerhardt
- CNRS UMR 5253
- AM2N
- 34296 Montpellier Cedex 05
| | - Florian Monnier
- Ecole Nationale Supérieure de Chimie de Montpellier
- Institut Charles Gerhardt
- CNRS UMR 5253
- AM2N
- 34296 Montpellier Cedex 05
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Wang ZQ, Zhang X, Yu LT, Mao WT, Chen CZ, Xu K. Synthesis of N-vinylindoles through copper catalyzed cyclization reaction of N-(2-alkynylphenyl)imine. Org Biomol Chem 2015; 13:6931-4. [DOI: 10.1039/c5ob00746a] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A Cu(ii)-catalyzed cyclization reaction of N-(2-alkynylphenyl)imine to synthesize substituted N-vinylindoles is developed.
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Affiliation(s)
- Zhi-Qiang Wang
- College of Chemistry and Pharmaceutical Engineering
- Nanyang Normal University
- Nanyang
- P. R. China
| | - Xu Zhang
- College of Chemistry and Pharmaceutical Engineering
- Nanyang Normal University
- Nanyang
- P. R. China
| | - Lin-Tao Yu
- College of Chemistry and Pharmaceutical Engineering
- Nanyang Normal University
- Nanyang
- P. R. China
| | - Wu-Tao Mao
- College of Chemistry and Pharmaceutical Engineering
- Nanyang Normal University
- Nanyang
- P. R. China
| | - Chang-Zhong Chen
- College of Chemistry and Pharmaceutical Engineering
- Nanyang Normal University
- Nanyang
- P. R. China
| | - Kun Xu
- College of Chemistry and Pharmaceutical Engineering
- Nanyang Normal University
- Nanyang
- P. R. China
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20
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Battula S, Vishwakarma RA, Ahmed QN. Cu–benzotriazole-catalyzed electrophilic cyclization of N-arylimines: a methodical tandem approach to O-protected-4hydroxyquinazolines-. RSC Adv 2014. [DOI: 10.1039/c4ra07377k] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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21
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Jha RR, Danodia AK, Verma AK. Synthesis of fused heterocycles via preferential hydroamination of o-haloarylalkynes over N-arylation and successive intramolecular CC bond formation. Tetrahedron Lett 2014. [DOI: 10.1016/j.tetlet.2014.06.092] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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22
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Patel M, Saunthawal RK, Verma AK. Base-catalyzed stereoselective intermolecular addition of imidazoles onto alkynes: an easy access to imidazolyl enamines. Tetrahedron Lett 2014. [DOI: 10.1016/j.tetlet.2013.12.100] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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23
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Soares LK, Lara RG, Jacob RG, Lenardão EJ, Alves D, Perin G. Synthesis of (Z)-N-alkenyl-β-arylselanyl imidazoles via additive-free nucleophilic addition of imidazole to arylselanylalkynes. Tetrahedron Lett 2014. [DOI: 10.1016/j.tetlet.2013.12.058] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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24
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Verma AK, Patel M, Joshi M, Likhar PR, Tiwari RK, Parang K. Base-Mediated Chemo- and Stereoselective Addition of 5-Aminoindole/Tryptamine and Histamines onto Alkynes. J Org Chem 2013; 79:172-86. [PMID: 24215621 DOI: 10.1021/jo402352v] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Akhilesh K. Verma
- Synthetic Organic Chemistry Research
Laboratory, Department of Chemistry, University of Delhi, Delhi 110007, India
| | - Monika Patel
- Synthetic Organic Chemistry Research
Laboratory, Department of Chemistry, University of Delhi, Delhi 110007, India
| | - Megha Joshi
- Synthetic Organic Chemistry Research
Laboratory, Department of Chemistry, University of Delhi, Delhi 110007, India
| | - Pravin R. Likhar
- Inorganic and Physical Chemistry Division, Indian Institute of Chemical Technology, Hyderabad 500607, India
| | - Rakesh K. Tiwari
- College of Pharmacy, Chapman University, Orange, California 92866, United States
| | - Keykavous Parang
- College of Pharmacy, Chapman University, Orange, California 92866, United States
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25
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Lu L, Yan H, Liu D, Rong G, Mao J. Transition-Metal-Free Synthesis ofN-(1-Alkenyl)imidazoles by Potassium Phosphate-Promoted Addition Reaction of Alkynes to Imidazoles. Chem Asian J 2013; 9:75-8. [DOI: 10.1002/asia.201301173] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2013] [Indexed: 01/02/2023]
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26
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Zeng X, Cheng G, Shen J, Cui X. Palladium-Catalyzed Oxidative Cross-Coupling of N-Tosylhydrazones with Indoles: Synthesis of N-Vinylindoles. Org Lett 2013; 15:3022-5. [DOI: 10.1021/ol401217h] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Xiaobao Zeng
- Engineering Research Center of Molecular Medicine, Ministry of Education, Key Laboratory of Xiamen Marine and Gene Drugs, Institutes of Molecular Medicine and School of Biomedical Sciences, Huaqiao University, Xiamen, 361021, China
| | - Guolin Cheng
- Engineering Research Center of Molecular Medicine, Ministry of Education, Key Laboratory of Xiamen Marine and Gene Drugs, Institutes of Molecular Medicine and School of Biomedical Sciences, Huaqiao University, Xiamen, 361021, China
| | - Jinhai Shen
- Engineering Research Center of Molecular Medicine, Ministry of Education, Key Laboratory of Xiamen Marine and Gene Drugs, Institutes of Molecular Medicine and School of Biomedical Sciences, Huaqiao University, Xiamen, 361021, China
| | - Xiuling Cui
- Engineering Research Center of Molecular Medicine, Ministry of Education, Key Laboratory of Xiamen Marine and Gene Drugs, Institutes of Molecular Medicine and School of Biomedical Sciences, Huaqiao University, Xiamen, 361021, China
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27
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Pan X, Luo Y, Wu J. Route to Pyrazolo[5,1-a]isoquinolines via a Copper-Catalyzed Tandem Reaction of 2-Alkynylbromobenzene with Pyrazole. J Org Chem 2013; 78:5756-60. [DOI: 10.1021/jo400523v] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- Xiaolin Pan
- Department of Chemistry, Fudan University, 220 Handan Road, Shanghai 200433,
China
| | - Yong Luo
- Department of Chemistry, Fudan University, 220 Handan Road, Shanghai 200433,
China
| | - Jie Wu
- Department of Chemistry, Fudan University, 220 Handan Road, Shanghai 200433,
China
- State Key Laboratory
of Organometallic
Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai 200032, China
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28
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Zhao D, Shen Q, Zhou YR, Li JX. KOtBu-mediated stereoselective addition of quinazolines to alkynes under mild conditions. Org Biomol Chem 2013; 11:5908-12. [DOI: 10.1039/c3ob41083h] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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29
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Shukla SP, Tiwari RK, Verma AK. Palladium-Catalyzed Sonogashira-Coupling Conjoined C–H Activation: A Regioselective Tandem Strategy to Access Indolo- and Pyrrolo[1,2-a]quinolines. J Org Chem 2012; 77:10382-92. [DOI: 10.1021/jo302112a] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Satya Prakash Shukla
- Synthetic
Organic Chemistry Research Laboratory, Department of Chemistry, University of Delhi, Delhi, 110007, India
| | - Rakesh K. Tiwari
- Synthetic
Organic Chemistry Research Laboratory, Department of Chemistry, University of Delhi, Delhi, 110007, India
- Department of Biomedical & Pharmaceutical Sciences, College of Pharmacy, University of Rhode Island, Kingston, Rhode Island, United States
| | - Akhilesh K. Verma
- Synthetic
Organic Chemistry Research Laboratory, Department of Chemistry, University of Delhi, Delhi, 110007, India
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30
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Aggarwal T, Jha RR, Tiwari RK, Kumar S, Kotla SKR, Kumar S, Verma AK. Palladium-Catalyzed Regioselective [3 + 2] Annulation of Internal Alkynes and Iodo-pyranoquinolines with Concomitant Ring Opening. Org Lett 2012; 14:5184-7. [DOI: 10.1021/ol3022935] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Trapti Aggarwal
- Department of Chemistry, University of Delhi, Delhi, 110007, India, and Department of Biomedical and Pharmaceutical Sciences, University of Rhode Island, Kingston, Rhode Island 02881, United States
| | - Rajeev R. Jha
- Department of Chemistry, University of Delhi, Delhi, 110007, India, and Department of Biomedical and Pharmaceutical Sciences, University of Rhode Island, Kingston, Rhode Island 02881, United States
| | - Rakesh K. Tiwari
- Department of Chemistry, University of Delhi, Delhi, 110007, India, and Department of Biomedical and Pharmaceutical Sciences, University of Rhode Island, Kingston, Rhode Island 02881, United States
| | - Sonu Kumar
- Department of Chemistry, University of Delhi, Delhi, 110007, India, and Department of Biomedical and Pharmaceutical Sciences, University of Rhode Island, Kingston, Rhode Island 02881, United States
| | - Siva K. Reddy Kotla
- Department of Chemistry, University of Delhi, Delhi, 110007, India, and Department of Biomedical and Pharmaceutical Sciences, University of Rhode Island, Kingston, Rhode Island 02881, United States
| | - Sushil Kumar
- Department of Chemistry, University of Delhi, Delhi, 110007, India, and Department of Biomedical and Pharmaceutical Sciences, University of Rhode Island, Kingston, Rhode Island 02881, United States
| | - Akhilesh K. Verma
- Department of Chemistry, University of Delhi, Delhi, 110007, India, and Department of Biomedical and Pharmaceutical Sciences, University of Rhode Island, Kingston, Rhode Island 02881, United States
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31
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Aggarwal T, Kumar S, Dhaked DK, Tiwari RK, Bharatam PV, Verma AK. Site-Selective Electrophilic Cyclization and Subsequent Ring-Opening: A Synthetic Route to Pyrrolo[1,2-a]quinolines and Indolizines. J Org Chem 2012; 77:8562-73. [DOI: 10.1021/jo3015374] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Trapti Aggarwal
- Synthetic
Organic Chemistry Research Laboratory, Department of Chemistry, University of Delhi, Delhi, 110007, India
| | - Sonu Kumar
- Synthetic
Organic Chemistry Research Laboratory, Department of Chemistry, University of Delhi, Delhi, 110007, India
| | | | - Rakesh K. Tiwari
- Synthetic
Organic Chemistry Research Laboratory, Department of Chemistry, University of Delhi, Delhi, 110007, India
- Department of Biomedical & Pharmaceutical Sciences, University of Rhode Island, Kingston, Rhode Island, United States
| | | | - Akhilesh K. Verma
- Synthetic
Organic Chemistry Research Laboratory, Department of Chemistry, University of Delhi, Delhi, 110007, India
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32
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Verma AK, Jha RR, Chaudhary R, Tiwari RK, Reddy KSK, Danodia A. Copper-Catalyzed Tandem Synthesis of Indolo-, Pyrrolo[2,1-a]isoquinolines, Naphthyridines and Bisindolo/Pyrrolo[2,1-a]isoquinolines via Hydroamination of ortho-Haloarylalkynes Followed by C-2 Arylation. J Org Chem 2012; 77:8191-205. [DOI: 10.1021/jo301572p] [Citation(s) in RCA: 55] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Akhilesh K. Verma
- Synthetic Organic Chemistry
Research Laboratory, Department of Chemistry, University of Delhi, Delhi, 110007, India
| | - Rajeev R. Jha
- Synthetic Organic Chemistry
Research Laboratory, Department of Chemistry, University of Delhi, Delhi, 110007, India
| | - Ritu Chaudhary
- Synthetic Organic Chemistry
Research Laboratory, Department of Chemistry, University of Delhi, Delhi, 110007, India
| | - Rakesh K. Tiwari
- Synthetic Organic Chemistry
Research Laboratory, Department of Chemistry, University of Delhi, Delhi, 110007, India
- Department of Biomedical & Pharmaceutical Sciences, University of Rhode Island, Kingston, Rhode Island, United States
| | - Kotla Siva K. Reddy
- Synthetic Organic Chemistry
Research Laboratory, Department of Chemistry, University of Delhi, Delhi, 110007, India
| | - Abhinandan Danodia
- Synthetic Organic Chemistry
Research Laboratory, Department of Chemistry, University of Delhi, Delhi, 110007, India
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33
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Joshi M, Patel M, Tiwari R, Verma AK. Base-Mediated Selective Synthesis of Diversely Substituted N-Heterocyclic Enamines and Enaminones by the Hydroamination of Alkynes. J Org Chem 2012; 77:5633-45. [DOI: 10.1021/jo300782n] [Citation(s) in RCA: 59] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Megha Joshi
- Synthetic Organic Chemistry
Research Laboratory, Department of Chemistry, University of Delhi, Delhi 110007, India
| | - Monika Patel
- Synthetic Organic Chemistry
Research Laboratory, Department of Chemistry, University of Delhi, Delhi 110007, India
| | - Rakesh Tiwari
- Synthetic Organic Chemistry
Research Laboratory, Department of Chemistry, University of Delhi, Delhi 110007, India
- Department of Biomedical & Pharmaceutical Sciences, College of Pharmacy, University of Rhode Island, Kingston, Rhode Island 02881, United States
| | - Akhilesh K. Verma
- Synthetic Organic Chemistry
Research Laboratory, Department of Chemistry, University of Delhi, Delhi 110007, India
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