1
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Mandal M, Pradhan R, Lourderaj U, Balamurugan R. Dodging the Conventional Reactivity of o-Alkynylanilines under Gold Catalysis for Distal 7- endo- dig Cyclization. J Org Chem 2023; 88:2260-2287. [PMID: 36744758 DOI: 10.1021/acs.joc.2c02668] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
A direct ring-closing strategy involving a less facile 7-endo-dig carbacyclization of o-alkynylaniline derivatives for the synthesis of benzo[b]azepines has been presented. The trivial well-documented 5-endo-dig cyclization in o-alkynylaniline derivatives due to high nucleophilicity of nitrogen has been overcome by using their vinylogous amides under gold catalysis to access a wide array of benzo[b]azepines in an atom economical way with excellent functional group compatibility. Deuterium scrambling experiments and DFT studies favor a mechanism involving stabilizing conformational change of the initially formed seven-membered vinyl gold intermediate through a key cyclopropyl gold carbene intermediate and its subsequent protodeauration mediated by the counter anion.
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Affiliation(s)
- Mou Mandal
- School of Chemistry, University of Hyderabad, Hyderabad, Telangana-500046, India
| | - Renuka Pradhan
- School of Chemical Sciences, National Institute of Science Education and Research (NISER) Bhubaneswar, HBNI, P.O. Jatni, Khurda, Odisha-752050, India
| | - Upakarasamy Lourderaj
- School of Chemical Sciences, National Institute of Science Education and Research (NISER) Bhubaneswar, HBNI, P.O. Jatni, Khurda, Odisha-752050, India
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2
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Virumbrales C, El-Remaily MAEAAA, Suárez-Pantiga S, Fernández-Rodríguez MA, Rodríguez F, Sanz R. Gold(I) Catalysis Applied to the Stereoselective Synthesis of Indeno[2,1- b]thiochromene Derivatives and Seleno Analogues. Org Lett 2022; 24:8077-8082. [DOI: 10.1021/acs.orglett.2c03411] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Cintia Virumbrales
- Área de Química Orgánica, Departamento de Química, Facultad de Ciencias, Universidad de Burgos, Pza. Misael Bañuelos s/n, 09001 Burgos, Spain
| | | | - Samuel Suárez-Pantiga
- Área de Química Orgánica, Departamento de Química, Facultad de Ciencias, Universidad de Burgos, Pza. Misael Bañuelos s/n, 09001 Burgos, Spain
| | - Manuel A. Fernández-Rodríguez
- Facultad de Farmacia, Departamento de Química Orgánica y Química Inorgánica, Instituto de Investigación Química “Andrés M. del Río” (IQAR), Campus Científico-Tecnológico, Universidad de Alcalá (IRYCIS), Autovía A-II, Km 33.1, 28805 Alcalá de Henares, Spain
| | - Félix Rodríguez
- Departamento de Química Orgánica e Inorgánica, Facultad de Química, Universidad de Oviedo, C/Julián Clavería, 8, 33006 Oviedo, Spain
| | - Roberto Sanz
- Área de Química Orgánica, Departamento de Química, Facultad de Ciencias, Universidad de Burgos, Pza. Misael Bañuelos s/n, 09001 Burgos, Spain
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3
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Lv K, Bao X. Mechanistic insights into nickel- and gold-catalyzed diastereoselective [4 + 2 + 1] cycloadditions between dienynes and diazo compounds: a DFT study. Org Chem Front 2022. [DOI: 10.1039/d1qo01468d] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
Density functional theory (DFT) calculations were performed to gain an in-depth mechanistic understanding of Ni(0)- and Au(i)-catalyzed diastereoselective [4 + 2 + 1] cycloadditions between dienynes and diazo compounds.
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Affiliation(s)
- Kang Lv
- Innovation Center for Chemical Sciences, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, 199 Ren-Ai Road, Suzhou Industrial Park, Suzhou, Jiangsu 215123, China
- School of Engineering, Jining University, Qufu, Shandong 273155, China
| | - Xiaoguang Bao
- Innovation Center for Chemical Sciences, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, 199 Ren-Ai Road, Suzhou Industrial Park, Suzhou, Jiangsu 215123, China
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4
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Fu J, Li B, Wang X, Liang Q, Peng X, Yang L, Wan T, Wang X, Lin B, Cheng M, Liu Y. Au(I)‐Catalyzed 6‐
endo
‐
dig
Cyclizations of Aromatic 1,
5‐Enynes
to 2‐(Naphthalen‐2‐yl)anilines Leading to Divergent Syntheses of Benzo[
α
]carbazole, Benzo[
c
,
h
]cinnoline and Dibenzo[
i
]phenanthridine Derivatives. CHINESE J CHEM 2022. [DOI: 10.1002/cjoc.202100582] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
- Jiayue Fu
- Key Laboratory of Structure‐Based Drug Design and Discovery (Shenyang Pharmaceutical University), Ministry of Education Shenyang Liaoning 110016 China
- Wuya College of Innovation Shenyang Pharmaceutical University Shenyang Liaoning 110016 China
- Institute of Drug Research in Medicine Capital of China Benxi Liaoning 117000 China
| | - Bingbing Li
- Key Laboratory of Structure‐Based Drug Design and Discovery (Shenyang Pharmaceutical University), Ministry of Education Shenyang Liaoning 110016 China
- Wuya College of Innovation Shenyang Pharmaceutical University Shenyang Liaoning 110016 China
- Institute of Drug Research in Medicine Capital of China Benxi Liaoning 117000 China
| | - Xiugui Wang
- Key Laboratory of Structure‐Based Drug Design and Discovery (Shenyang Pharmaceutical University), Ministry of Education Shenyang Liaoning 110016 China
- Institute of Drug Research in Medicine Capital of China Benxi Liaoning 117000 China
| | - Qida Liang
- Key Laboratory of Structure‐Based Drug Design and Discovery (Shenyang Pharmaceutical University), Ministry of Education Shenyang Liaoning 110016 China
- Wuya College of Innovation Shenyang Pharmaceutical University Shenyang Liaoning 110016 China
- Institute of Drug Research in Medicine Capital of China Benxi Liaoning 117000 China
| | - Xiaoshi Peng
- Key Laboratory of Structure‐Based Drug Design and Discovery (Shenyang Pharmaceutical University), Ministry of Education Shenyang Liaoning 110016 China
- Institute of Drug Research in Medicine Capital of China Benxi Liaoning 117000 China
| | - Lu Yang
- Key Laboratory of Structure‐Based Drug Design and Discovery (Shenyang Pharmaceutical University), Ministry of Education Shenyang Liaoning 110016 China
- Wuya College of Innovation Shenyang Pharmaceutical University Shenyang Liaoning 110016 China
- Institute of Drug Research in Medicine Capital of China Benxi Liaoning 117000 China
| | - Tao Wan
- Liaoning Kangboshi Pharmaceutical Co. LTD Anshan Liaoning 114100 China
| | - Xinxiu Wang
- Key Laboratory of Structure‐Based Drug Design and Discovery (Shenyang Pharmaceutical University), Ministry of Education Shenyang Liaoning 110016 China
- Institute of Drug Research in Medicine Capital of China Benxi Liaoning 117000 China
| | - Bin Lin
- Key Laboratory of Structure‐Based Drug Design and Discovery (Shenyang Pharmaceutical University), Ministry of Education Shenyang Liaoning 110016 China
- Institute of Drug Research in Medicine Capital of China Benxi Liaoning 117000 China
| | - Maosheng Cheng
- Key Laboratory of Structure‐Based Drug Design and Discovery (Shenyang Pharmaceutical University), Ministry of Education Shenyang Liaoning 110016 China
- Institute of Drug Research in Medicine Capital of China Benxi Liaoning 117000 China
| | - Yongxiang Liu
- Key Laboratory of Structure‐Based Drug Design and Discovery (Shenyang Pharmaceutical University), Ministry of Education Shenyang Liaoning 110016 China
- Wuya College of Innovation Shenyang Pharmaceutical University Shenyang Liaoning 110016 China
- Institute of Drug Research in Medicine Capital of China Benxi Liaoning 117000 China
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5
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Li Y, Zhao X. Assessing counterion effects in gold-catalyzed domino spirocyclization: an industrial perspective on hydrogen bonding. Phys Chem Chem Phys 2020; 22:19606-19612. [PMID: 32936160 DOI: 10.1039/d0cp03367g] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
We herein report a computational study of the hydrogen bonding in gold-catalyzed ipso-cyclization to diverse polyheterocyclic frameworks. The different roles of these hydrogen bonds are analyzed for the different ipso-cyclization reactions. The fine-tunability of the electronic as well as steric properties of gold counterions contributed substantially to the popularity of the dearomatization reaction, with robust applications in total synthesis and gold catalysis. We have found correlation between the hydrogen bonding parameters and chemoselectivity in gold-catalyzed spirocyclization, playing critical roles in determining the reaction direction of counterion-based enantioselective gold catalysis. The expanded use of counterions via hydrogen bonding interaction can occupy an important role in the future concerning catalyst optimization in gold catalysis.
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Affiliation(s)
- Yunhe Li
- Institute for Chemical Physics & Department of Chemistry, School of Science, State Key Laboratory of Electrical Insulation and Power Equipment & MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter, Xi'an Jiaotong University, Xi'an 710049, China.
| | - Xiang Zhao
- Institute for Chemical Physics & Department of Chemistry, School of Science, State Key Laboratory of Electrical Insulation and Power Equipment & MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter, Xi'an Jiaotong University, Xi'an 710049, China.
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6
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Virumbrales C, Suárez‐Pantiga S, Marín‐Luna M, Silva López C, Sanz R. Unlocking the 5‐
exo
Pathway with the Au
I
‐Catalyzed Alkoxycyclization of 1,3‐Dien‐5‐ynes. Chemistry 2020; 26:8443-8451. [DOI: 10.1002/chem.202001296] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2020] [Revised: 04/13/2020] [Indexed: 12/28/2022]
Affiliation(s)
- Cintia Virumbrales
- Área de Química Orgánica. Departamento de QuímicaUniversidad de Burgos Pza. Misael Bañuelos, s/n 09001 Burgos Spain
| | - Samuel Suárez‐Pantiga
- Área de Química Orgánica. Departamento de QuímicaUniversidad de Burgos Pza. Misael Bañuelos, s/n 09001 Burgos Spain
| | - Marta Marín‐Luna
- Departamento de Química Orgánica and CITACAAgri-Food Research and Transfer Cluster, Campus da AugaUniversidade de Vigo 32004 Ourense Spain
- Current address: Departamento de Química OrgánicaRegional Campus of International Excellence „Campus Mare Nostrum“Universidad de Murcia Campus de Espinardo 30100 Murcia Spain
| | - Carlos Silva López
- Departamento de Química Orgánica and CITACAAgri-Food Research and Transfer Cluster, Campus da AugaUniversidade de Vigo 32004 Ourense Spain
| | - Roberto Sanz
- Área de Química Orgánica. Departamento de QuímicaUniversidad de Burgos Pza. Misael Bañuelos, s/n 09001 Burgos Spain
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7
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Ge S, Zhang Y, Tan Z, Li D, Dong S, Liu X, Feng X. Bimetallic Catalytic Tandem Reaction of Acyclic Enynones: Enantioselective Access to Tetrahydrobenzofuran Derivatives. Org Lett 2020; 22:3551-3556. [DOI: 10.1021/acs.orglett.0c00984] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Shulin Ge
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, China
| | - Yongyan Zhang
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, China
| | - Zheng Tan
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, China
| | - Dawei Li
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, China
| | - Shunxi Dong
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, China
| | - Xiaohua Liu
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, China
| | - Xiaoming Feng
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, China
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8
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Zhou L, Yang L, Dai S, Gao Y, Fang R, Kirillov AM, Yang L. Insight into the reaction mechanism and chemoselectivity in the cycloaddition of ynamides and isoxazoles with H2O. Catal Sci Technol 2020. [DOI: 10.1039/c9cy01964b] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The mechanism and chemoselectivity in the cycloaddition of ynamides and isoxazoles have been explored by the density functional theory (DFT) in model systems composed of a Brønsted acid (HNTf2), gold(i) [IPrAuNTf2] or platinum(ii) (PtCl2/CO) catalyst.
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Affiliation(s)
- Lin Zhou
- State Key Laboratory of Applied Organic Chemistry and Key Laboratory of Nonferrous Metals Chemistry and Resources Utilization of Gansu Province
- College of Chemistry and Chemical Engineering
- Lanzhou University
- Lanzhou 730000
- P. R. China
| | - Li Yang
- State Key Laboratory of Applied Organic Chemistry and Key Laboratory of Nonferrous Metals Chemistry and Resources Utilization of Gansu Province
- College of Chemistry and Chemical Engineering
- Lanzhou University
- Lanzhou 730000
- P. R. China
| | - Songshan Dai
- State Key Laboratory of Applied Organic Chemistry and Key Laboratory of Nonferrous Metals Chemistry and Resources Utilization of Gansu Province
- College of Chemistry and Chemical Engineering
- Lanzhou University
- Lanzhou 730000
- P. R. China
| | - Yuanyuan Gao
- State Key Laboratory of Applied Organic Chemistry and Key Laboratory of Nonferrous Metals Chemistry and Resources Utilization of Gansu Province
- College of Chemistry and Chemical Engineering
- Lanzhou University
- Lanzhou 730000
- P. R. China
| | - Ran Fang
- State Key Laboratory of Applied Organic Chemistry and Key Laboratory of Nonferrous Metals Chemistry and Resources Utilization of Gansu Province
- College of Chemistry and Chemical Engineering
- Lanzhou University
- Lanzhou 730000
- P. R. China
| | - Alexander M. Kirillov
- Centro de Química Estrutural
- Instituto Superior Técnico
- Universidade de Lisboa
- Lisbon
- Portugal
| | - Lizi Yang
- State Key Laboratory of Applied Organic Chemistry and Key Laboratory of Nonferrous Metals Chemistry and Resources Utilization of Gansu Province
- College of Chemistry and Chemical Engineering
- Lanzhou University
- Lanzhou 730000
- P. R. China
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9
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Li Y, Zhao X. Mechanism and origins of gold-catalyzed domino cyclization to spiroindolines: the role of periplanar cooperation and hydrogen bonding interactions. Org Chem Front 2020. [DOI: 10.1039/d0qo00359j] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
The detailed mechanism and origins of gold-catalyzed domino cyclization to indoloazocines are systematically studied by density functional theory.
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Affiliation(s)
- Yunhe Li
- Institute for Chemical Physics & Department of Chemistry
- School of Science
- State Key Laboratory of Electrical Insulation and Power Equipment & MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter
- Xi'an Jiaotong University
- Xi'an 710049
| | - Xiang Zhao
- Institute for Chemical Physics & Department of Chemistry
- School of Science
- State Key Laboratory of Electrical Insulation and Power Equipment & MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter
- Xi'an Jiaotong University
- Xi'an 710049
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10
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Zhou MM, Jiang BL, Ni SF, Dang L. Lewis Acidic PSbP Pincer Ligand in Pt-Catalyzed 1,6-Enyne Cycloisomerization: A Theoretical Study. J Org Chem 2019; 84:9454-9459. [PMID: 31283220 DOI: 10.1021/acs.joc.9b00794] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The progressively improved heterobimetallic antimony transition metal complex PSbP-Pt (I1) provides superior activity in catalyzed 1,6-enyne cycloisomerization. Our DFT calculations demonstrate that the noninnocent character of the antimony ligand enhances the self-activation of the catalyst precursor through a substrate-aided intramolecular chloride migration, which triggers subsequent reaction. Designed alternative redox noninnocent active species with strong electron-withdrawing groups also show promising catalytic ability due to an electron-deficient antimony ligand, which lowers the typical reaction barrier for the cycloisomerization of 1,6-enyne.
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Affiliation(s)
- Miao-Miao Zhou
- Department of Chemistry and Key Laboratory for Preparation and Application of Ordered Structural Materials of Guangdong Province , Shantou University , Shantou , Guangdong 515063 , P.R. China
| | - Bei-Lei Jiang
- Department of Chemistry , Southern University of Science and Technology , Shenzhen 518055 , P.R. China
| | - Shao-Fei Ni
- Department of Chemistry and Key Laboratory for Preparation and Application of Ordered Structural Materials of Guangdong Province , Shantou University , Shantou , Guangdong 515063 , P.R. China
| | - Li Dang
- Department of Chemistry and Key Laboratory for Preparation and Application of Ordered Structural Materials of Guangdong Province , Shantou University , Shantou , Guangdong 515063 , P.R. China.,Department of Chemistry , Southern University of Science and Technology , Shenzhen 518055 , P.R. China
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11
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Virumbrales C, Solas M, Suárez-Pantiga S, Fernández-Rodríguez MA, Marín-Luna M, López CS, Sanz R. Gold(i)-catalyzed nucleophilic cyclization of β-monosubstituted o-(alkynyl)styrenes: a combined experimental and computational study. Org Biomol Chem 2019; 17:9924-9932. [DOI: 10.1039/c9ob02126d] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
The diastereospecific 5-endo cyclization of β-monosubstituted o-(alkynyl)styrenes to 1-functionalized-1H-indenes is reported. The regiospecific generation of a cyclopropyl gold carbene intermediate is also supported by DFT calculations.
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Affiliation(s)
- Cintia Virumbrales
- Área de Química Orgánica
- Departamento de Química
- Facultad de Ciencias
- Universidad de Burgos
- 09001 Burgos
| | - Marta Solas
- Área de Química Orgánica
- Departamento de Química
- Facultad de Ciencias
- Universidad de Burgos
- 09001 Burgos
| | - Samuel Suárez-Pantiga
- Área de Química Orgánica
- Departamento de Química
- Facultad de Ciencias
- Universidad de Burgos
- 09001 Burgos
| | | | - Marta Marín-Luna
- Departamento de Química Orgánica
- Universidade de Vigo
- 36310 Vigo
- Spain
| | - Carlos Silva López
- Departamento de Química Orgánica
- Universidade de Vigo
- 36310 Vigo
- Spain
- CITACA - Clúster de Investigación y Transferencia Agroalimentaria del Campus Auga
| | - Roberto Sanz
- Área de Química Orgánica
- Departamento de Química
- Facultad de Ciencias
- Universidad de Burgos
- 09001 Burgos
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12
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Zhou L, Yang L, Zhang Y, Kirillov AM, Fang R, Han B. Theoretical study on the mechanism and chemoselectivity in gold(i)-catalyzed cycloisomerization of β,β-disubstituted ortho-(alkynyl)styrenes. Org Chem Front 2019. [DOI: 10.1039/c9qo00534j] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
The mechanism and chemoselectivity of gold(i)-catalyzed cycloadditions of β,β-disubstituted ortho-(alkynyl)styrenes were explored by DFT calculations.
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Affiliation(s)
- Lin Zhou
- State Key Laboratory of Applied Organic Chemistry and Key Laboratory of Nonferrous Metals Chemistry and Resources Utilization of Gansu Province
- College of Chemistry and Chemical Engineering
- Lanzhou University
- Lanzhou 730000
- P. R. China
| | - Li Yang
- State Key Laboratory of Applied Organic Chemistry and Key Laboratory of Nonferrous Metals Chemistry and Resources Utilization of Gansu Province
- College of Chemistry and Chemical Engineering
- Lanzhou University
- Lanzhou 730000
- P. R. China
| | - Yanwen Zhang
- State Key Laboratory of Applied Organic Chemistry and Key Laboratory of Nonferrous Metals Chemistry and Resources Utilization of Gansu Province
- College of Chemistry and Chemical Engineering
- Lanzhou University
- Lanzhou 730000
- P. R. China
| | - Alexander M. Kirillov
- Centro de Química Estrutural
- Instituto Superior Técnico
- Universidade de Lisboa
- Lisbon
- Portugal
| | - Ran Fang
- State Key Laboratory of Applied Organic Chemistry and Key Laboratory of Nonferrous Metals Chemistry and Resources Utilization of Gansu Province
- College of Chemistry and Chemical Engineering
- Lanzhou University
- Lanzhou 730000
- P. R. China
| | - Bing Han
- State Key Laboratory of Applied Organic Chemistry and Key Laboratory of Nonferrous Metals Chemistry and Resources Utilization of Gansu Province
- College of Chemistry and Chemical Engineering
- Lanzhou University
- Lanzhou 730000
- P. R. China
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13
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Theoretical investigation of gold(I)-catalyzed intramolecular SEAr in isoxazole derivatives: Mechanisms, origin of regioselectivity, and role of hydrogen acceptor. MOLECULAR CATALYSIS 2018. [DOI: 10.1016/j.mcat.2018.09.010] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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14
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Zhou L, Zhang Y, Fang R, Yang L. Computational Exploration of Counterion Effects in Gold(I)-Catalyzed Cycloisomerization of ortho-(Alkynyl)styrenes. ACS OMEGA 2018; 3:9339-9347. [PMID: 31459067 PMCID: PMC6644738 DOI: 10.1021/acsomega.8b01131] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/25/2018] [Accepted: 07/12/2018] [Indexed: 06/10/2023]
Abstract
A detailed theoretical analysis of the mechanism and chemoselectivity for gold(I)-catalyzed reaction of o-(alkynyl)styrene containing an isopropyl and a methyl at the terminal position of the alkene has been reported in this work. Two different counterions (SbF6 - and OTs-) were studied as model catalysts. According to our calculation, for SbF6 -, the reaction pathway is more prone to direct 1,2-H shifts (isopropyl H) than the elimination and ring expansion pathway. However, an elimination pathway affords the indenyl derivative by forming p-toluenesulfonic acid (HOTs), which may be the main pathway in the presence of OTs-. The chemoselectivity for the title reaction is mainly determined by the electronic effect of the counterion and the substituent rather than the steric effect. In other words, less basic SbF6 - mainly provides the charge separation effect rather than assisted proton elimination. However, the more basic OTs- mainly assist proton elimination through the formation of HOTs. In addition to the good agreement with the experimental data, the density functional theory results also provide a significant contribution to the understanding of the reaction mechanism.
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Affiliation(s)
- Lin Zhou
- State
Key Laboratory of Applied Organic Chemistry and College of
Chemistry and Chemical Engineering, and Key Laboratory of Nonferrous Metals
Chemistry and Resources Utilization of Gansu Province, Lanzhou University, No. 222 Tianshui South Road, Lanzhou 730000, P. R.
China
| | - Yanwen Zhang
- State
Key Laboratory of Applied Organic Chemistry and College of
Chemistry and Chemical Engineering, and Key Laboratory of Nonferrous Metals
Chemistry and Resources Utilization of Gansu Province, Lanzhou University, No. 222 Tianshui South Road, Lanzhou 730000, P. R.
China
| | - Ran Fang
- State
Key Laboratory of Applied Organic Chemistry and College of
Chemistry and Chemical Engineering, and Key Laboratory of Nonferrous Metals
Chemistry and Resources Utilization of Gansu Province, Lanzhou University, No. 222 Tianshui South Road, Lanzhou 730000, P. R.
China
| | - Lizi Yang
- State
Key Laboratory of Applied Organic Chemistry and College of
Chemistry and Chemical Engineering, and Key Laboratory of Nonferrous Metals
Chemistry and Resources Utilization of Gansu Province, Lanzhou University, No. 222 Tianshui South Road, Lanzhou 730000, P. R.
China
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15
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Wang Y, Wang Y, Wang X, Li X, Qu LB, Wei D. Competing mechanisms and origins of chemo- and stereo-selectivities of NHC-catalyzed reactions of enals with 2-aminoacrylates. Catal Sci Technol 2018. [DOI: 10.1039/c8cy01272e] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
A DFT study on competing mechanisms of NHC-catalyzed reactions of enals with 2-aminoacrylates has been performed for the first time.
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Affiliation(s)
- Yang Wang
- Department of Material and Chemical Engineering
- Zhengzhou University of Light Industry
- Zhengzhou
- P.R. China
| | - Yanyan Wang
- College of Chemistry and Molecular Engineering
- Zhengzhou University
- Zhengzhou
- P.R. China
| | - Xinghua Wang
- College of Chemistry and Molecular Engineering
- Zhengzhou University
- Zhengzhou
- P.R. China
| | - Xue Li
- College of Chemistry and Molecular Engineering
- Zhengzhou University
- Zhengzhou
- P.R. China
| | - Ling-Bo Qu
- College of Chemistry and Molecular Engineering
- Zhengzhou University
- Zhengzhou
- P.R. China
| | - Donghui Wei
- College of Chemistry and Molecular Engineering
- Zhengzhou University
- Zhengzhou
- P.R. China
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16
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Shi Q, Wang Y, Wang Y, Qu LB, Qiao Y, Wei D. Insights into N-heterocyclic carbene-catalyzed [3 + 4] annulation reactions of 2-bromoenals with N-Ts hydrazones. Org Chem Front 2018. [DOI: 10.1039/c8qo00716k] [Citation(s) in RCA: 43] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
A DFT study toward N-heterocyclic carbene-catalyzed [3 + 4] annulation reactions of 2-bromoenals has been performed for the first time.
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Affiliation(s)
- Qianqian Shi
- College of Chemistry and Molecular Engineering
- Zhengzhou University
- Zhengzhou
- P.R. China
| | - Yang Wang
- Department of Material and Chemical Engineering
- Zhengzhou University of Light Industry
- Zhengzhou
- P.R. China
| | - Yanyan Wang
- College of Chemistry and Molecular Engineering
- Zhengzhou University
- Zhengzhou
- P.R. China
| | - Ling-Bo Qu
- College of Chemistry and Molecular Engineering
- Zhengzhou University
- Zhengzhou
- P.R. China
| | - Yan Qiao
- School of Basic Medical Sciences
- Zhengzhou University
- Zhengzhou
- P.R. China
| | - Donghui Wei
- College of Chemistry and Molecular Engineering
- Zhengzhou University
- Zhengzhou
- P.R. China
| |
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