1
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Cheng YY, Kuo TS, Wu PY, Hsieh JC, Wu HL. Rhodium(I)/Chiral Diene Complexes Catalyzed Asymmetric Desymmetrization of Alkynyl-Tethered 2,5-Cyclohexadienones Through an Arylative Cyclization Cascade. J Org Chem 2024; 89:4861-4876. [PMID: 38525772 DOI: 10.1021/acs.joc.4c00053] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/26/2024]
Abstract
Cis-hydrobenzofurans, cis-hydroindoles, and cis-hydrindanes, privileged structural motifs found in numerous biologically active natural and synthetic compounds, are efficiently prepared by a Rh(I)-catalyzed cascade syn-arylation/1,4-addition protocol. This approach starts with the regioselective syn-arylation of the alkyne tethered to 2,5-hexadienone moieties, using a chiral Rh(I) catalyst generated in situ from a chiral bicyclo[2.2.1]hepatadiene ligand L4f. By forging two new carbon-carbon bonds and introducing two chiral centers, the resulting alkenylrhodium species undergoes desymmetrization via an intramolecular 1,4-addition reaction, delivering annulated products with high yields and enantioselectivities.
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Affiliation(s)
- Yu-Yi Cheng
- Department of Chemistry, National Taiwan Normal University, No. 88, Section 4, Tingzhou Road, Taipei 11677, Taiwan
| | - Ting-Shen Kuo
- Department of Chemistry, National Taiwan Normal University, No. 88, Section 4, Tingzhou Road, Taipei 11677, Taiwan
| | - Ping-Yu Wu
- Oleader Technologies, Co. Ltd., 1F., No. 8, Aly. 29, Ln. 335, Chenggong Road, Hukou Township, Hsinchu 30345, Taiwan
| | - Jen-Chieh Hsieh
- Department of Chemistry, Tamkang University, New Taipei City 25137, Taiwan
| | - Hsyueh-Liang Wu
- Department of Chemistry, National Taiwan Normal University, No. 88, Section 4, Tingzhou Road, Taipei 11677, Taiwan
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2
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Chen B, He CY, Chu WD, Liu QZ. Recent advances in the asymmetric transformations of achiral cyclohexadienones. Org Chem Front 2021. [DOI: 10.1039/d0qo01358g] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
This review describes recent developments in the asymmetric transformations of achiral cyclohexadienones, including enantioselective desymmetrization of prochiral cyclohexadienones and kinetic resolution of racemic cyclohexadienones.
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Affiliation(s)
- Bo Chen
- Chemical Synthesis and Pollution Control Key Laboratory of Sichuan Province
- College of Chemistry and Chemical Engineering
- China West Normal University
- Nanchong 637002
- China
| | - Cheng-Yu He
- Chemical Synthesis and Pollution Control Key Laboratory of Sichuan Province
- College of Chemistry and Chemical Engineering
- China West Normal University
- Nanchong 637002
- China
| | - Wen-Dao Chu
- Chemical Synthesis and Pollution Control Key Laboratory of Sichuan Province
- College of Chemistry and Chemical Engineering
- China West Normal University
- Nanchong 637002
- China
| | - Quan-Zhong Liu
- Chemical Synthesis and Pollution Control Key Laboratory of Sichuan Province
- College of Chemistry and Chemical Engineering
- China West Normal University
- Nanchong 637002
- China
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3
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He X, Zhu L, Heng D, Liu F, Liu S, Zhong K, Shan C, Bai R, Lan Y. Mechanistic insights into the rhodium–copper cascade catalyzed dual C–H annulation of indoles. Org Chem Front 2021. [DOI: 10.1039/d0qo01332c] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Density functional theory (DFT) calculations have been performed to provide mechanistic insight into the Rh/Cu co-catalyzed multicomponent annulation of indoles, diazo compounds, and α,β-unsaturated esters.
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Affiliation(s)
- Xiaoqian He
- School of Chemistry and Chemical Engineering
- Chongqing Key Laboratory of Theoretical and Computational Chemistry
- Chongqing University
- Chongqing 400030
- China
| | - Lei Zhu
- School of Chemistry and Chemical Engineering
- Chongqing Key Laboratory of Theoretical and Computational Chemistry
- Chongqing University
- Chongqing 400030
- China
| | - Dan Heng
- School of Chemistry and Chemical Engineering
- Chongqing Key Laboratory of Theoretical and Computational Chemistry
- Chongqing University
- Chongqing 400030
- China
| | - Fenru Liu
- School of Chemistry and Chemical Engineering
- Chongqing Key Laboratory of Theoretical and Computational Chemistry
- Chongqing University
- Chongqing 400030
- China
| | - Shihan Liu
- School of Chemistry and Chemical Engineering
- Chongqing Key Laboratory of Theoretical and Computational Chemistry
- Chongqing University
- Chongqing 400030
- China
| | - Kangbao Zhong
- School of Chemistry and Chemical Engineering
- Chongqing Key Laboratory of Theoretical and Computational Chemistry
- Chongqing University
- Chongqing 400030
- China
| | - Chunhui Shan
- College of Chemistry
- Chongqing Normal University
- Chongqing 401331
- China
| | - Ruopeng Bai
- School of Chemistry and Chemical Engineering
- Chongqing Key Laboratory of Theoretical and Computational Chemistry
- Chongqing University
- Chongqing 400030
- China
| | - Yu Lan
- School of Chemistry and Chemical Engineering
- Chongqing Key Laboratory of Theoretical and Computational Chemistry
- Chongqing University
- Chongqing 400030
- China
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4
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Al-Tel TH, Srinivasulu V, Ramanathan M, Soares NC, Sebastian A, Bolognesi ML, Abu-Yousef IA, Majdalawieh A. Stereocontrolled transformations of cyclohexadienone derivatives to access stereochemically rich and natural product-inspired architectures. Org Biomol Chem 2020; 18:8526-8571. [PMID: 33043327 DOI: 10.1039/d0ob01550d] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The last two decades or so have witnessed an upsurge in defining the art of designing complex natural products and nature-inspired molecules. Throughout these decades, fundamental insights into stereocontrolled, step-economic and atom-economical synthesis principles were achieved by the numerous synthetic accomplishments particularly in diversity-oriented synthesis (DOS). This has empowered the visualization of the third dimension in synthetic design and thus has resulted in a dramatic increase with today's diversity-oriented synthesis (DOS) at the forefront enabling access to diverse scaffolds with a high degree of stereochemical and skeletal complexity. To this end, a starting material-based approach is one of the powerful tools utilized in DOS that allows rapid access to molecular architectures with a high sp3 content. Skeletal and stereochemical diversity is often paramount for the selective modulation of the biological function of a complementary protein in the biological space. In this context, stereocontrolled transformation of cyclohexadienone scaffolds has positioned itself as a powerful platform for the rapid generation of stereochemically enriched and natural product-inspired compound collections. In this review, we cover multidirectional synthetic strategies that utilized cyclohexadienone derivatives as pluripotent building blocks en route for the construction of novel chemical space.
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Affiliation(s)
- Taleb H Al-Tel
- Sharjah Institute for Medical Research, University of Sharjah, P.O. Box 27272, Sharjah, United Arab Emirates.
| | - Vunnam Srinivasulu
- Sharjah Institute for Medical Research, University of Sharjah, P.O. Box 27272, Sharjah, United Arab Emirates.
| | - Mani Ramanathan
- Department of Biology, Chemistry and Environmental Sciences, American University of Sharjah, Sharjah, United Arab Emirates
| | - Nelson C Soares
- Sharjah Institute for Medical Research, University of Sharjah, P.O. Box 27272, Sharjah, United Arab Emirates.
| | - Anusha Sebastian
- Department of Biology, Chemistry and Environmental Sciences, American University of Sharjah, Sharjah, United Arab Emirates
| | - Maria L Bolognesi
- Department of Pharmacy and Biotechnology, Alma Mater Studiorum - Università di Bologna, Via Belmeloro, 6, 40126 Bologna, Italy
| | - Imad A Abu-Yousef
- Department of Biology, Chemistry and Environmental Sciences, American University of Sharjah, Sharjah, United Arab Emirates
| | - Amin Majdalawieh
- Department of Biology, Chemistry and Environmental Sciences, American University of Sharjah, Sharjah, United Arab Emirates
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5
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Li Y, Wu M, Chen H, Xu D, Qu L, Zhang J, Bai R, Lan Y. Role of Alkaline-Earth Metal-Catalyst: A Theoretical Study of Pyridines Hydroboration. Front Chem 2019; 7:149. [PMID: 30972320 PMCID: PMC6443636 DOI: 10.3389/fchem.2019.00149] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2018] [Accepted: 02/28/2019] [Indexed: 01/06/2023] Open
Abstract
Density functional theory (DFT) calculations have been performed to investigate the mechanism of alkaline-earth-metal-catalyzed hydroboration of pyridines with borane. In this reaction, the active catalytic species is considered to be an alkaline earth metal hydride complex when the corresponding alkaline earth metal is used as the catalyst. The theoretical results reveal that initiation of the catalytic cycle is hydride transfer to generate a magnesium hydride complex when β-diimine alkylmagnesium is used as a pre-catalyst. The magnesium hydride complex can undergo coordination of the pyridine reactant followed by hydride transfer to form a dearomatized magnesium pyridine intermediate. Coordination of borane and hydride transfer from borohydride to magnesium then give the hydroboration product and regenerate the active magnesium hydride catalyst. The rate-determining step of the catalytic cycle is hydride transfer to pyridine with a free energy barrier of 29.7 kcal/mol. Other alkaline earth metal complexes, including calcium and strontium complexes, were also considered. The DFT calculations show that the corresponding activation free energies for the rate-determining step of this reaction with calcium and strontium catalysts are much lower than with the magnesium catalyst. Therefore, calcium and strontium complexes can be used as the catalyst for the reaction, which could allow mild reaction conditions.
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Affiliation(s)
- Yuanyuan Li
- Department of Biological and Chemical Engineering, Chongqing University of Education, Chongqing, China.,Cooperative Innovation Center of Lipid Resources and Children's Daily Chemicals, Chongqing University of Education, Chongqing, China.,College of Chemistry and Molecular Engineering, ZhengZhou University, ZhengZhou, China
| | - Meijun Wu
- Department of Biological and Chemical Engineering, Chongqing University of Education, Chongqing, China
| | - Haohua Chen
- School of Chemistry and Chemical Engineering, Chongqing University, Chongqing, China
| | - Dongdong Xu
- School of Chemistry and Chemical Engineering, Chongqing University, Chongqing, China
| | - Lingbo Qu
- College of Chemistry and Molecular Engineering, ZhengZhou University, ZhengZhou, China
| | - Jing Zhang
- Department of Chemistry and Chemical Engineering, Jining University, Jining, China
| | - Ruopeng Bai
- School of Chemistry and Chemical Engineering, Chongqing University, Chongqing, China
| | - Yu Lan
- College of Chemistry and Molecular Engineering, ZhengZhou University, ZhengZhou, China.,School of Chemistry and Chemical Engineering, Chongqing University, Chongqing, China
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6
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Wang Y, Wu QY, Lai TH, Zheng KJ, Qu LB, Wei D. Prediction on the origin of selectivities of NHC-catalyzed asymmetric dearomatization (CADA) reactions. Catal Sci Technol 2019. [DOI: 10.1039/c8cy02238k] [Citation(s) in RCA: 44] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
The mechanism and origin of selectivities of NHC-catalyzed dearomatization reaction have been theoretically studied.
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Affiliation(s)
- Yang Wang
- Department of Material and Chemical Engineering
- Zhengzhou University of Light Industry
- Zhengzhou
- P.R. China
| | - Qiu-Yu Wu
- Department of Material and Chemical Engineering
- Zhengzhou University of Light Industry
- Zhengzhou
- P.R. China
| | - Tian-Hua Lai
- Department of Material and Chemical Engineering
- Zhengzhou University of Light Industry
- Zhengzhou
- P.R. China
| | - Kai-Jun Zheng
- Department of Material and Chemical Engineering
- Zhengzhou University of Light Industry
- Zhengzhou
- P.R. China
| | - Ling-Bo Qu
- College of Chemistry and Molecular Engineering
- Center of Computational Chemistry
- Zhengzhou University
- Zhengzhou
- P.R. China
| | - Donghui Wei
- College of Chemistry and Molecular Engineering
- Center of Computational Chemistry
- Zhengzhou University
- Zhengzhou
- P.R. China
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7
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Hu L, Chen H. Comparative computational study on C-C/C-N/C-Br bond formations in Rh(III)-catalyzed C-H functionalizations: Stepwise versus concerted mechanisms. J Organomet Chem 2018. [DOI: 10.1016/j.jorganchem.2018.02.012] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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8
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Rong ZQ, Yang LC, Liu S, Yu Z, Wang YN, Tan ZY, Huang RZ, Lan Y, Zhao Y. Nine-Membered Benzofuran-Fused Heterocycles: Enantioselective Synthesis by Pd-Catalysis and Rearrangement via Transannular Bond Formation. J Am Chem Soc 2017; 139:15304-15307. [DOI: 10.1021/jacs.7b09161] [Citation(s) in RCA: 180] [Impact Index Per Article: 25.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Zi-Qiang Rong
- Department
of Chemistry, National University of Singapore, 3 Science Drive 3, 117543 Republic of Singapore
| | - Li-Cheng Yang
- Department
of Chemistry, National University of Singapore, 3 Science Drive 3, 117543 Republic of Singapore
| | - Song Liu
- School
of Chemistry and Chemical Engineering, Chongqing University, Chongqing 400044, People’s Republic of China
| | - Zhaoyuan Yu
- School
of Chemistry and Chemical Engineering, Chongqing University, Chongqing 400044, People’s Republic of China
| | - Ya-Nong Wang
- Department
of Chemistry, National University of Singapore, 3 Science Drive 3, 117543 Republic of Singapore
| | - Zher Yin Tan
- Department
of Chemistry, National University of Singapore, 3 Science Drive 3, 117543 Republic of Singapore
| | - Rui-Zhi Huang
- Department
of Chemistry, National University of Singapore, 3 Science Drive 3, 117543 Republic of Singapore
| | - Yu Lan
- School
of Chemistry and Chemical Engineering, Chongqing University, Chongqing 400044, People’s Republic of China
| | - Yu Zhao
- Department
of Chemistry, National University of Singapore, 3 Science Drive 3, 117543 Republic of Singapore
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9
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From Mechanistic Study to Chiral Catalyst Optimization: Theoretical Insight into Binaphthophosphepine-catalyzed Asymmetric Intramolecular [3 + 2] Cycloaddition. Sci Rep 2017; 7:7619. [PMID: 28790337 PMCID: PMC5548760 DOI: 10.1038/s41598-017-07863-9] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2017] [Accepted: 06/30/2017] [Indexed: 11/08/2022] Open
Abstract
Density functional M11 was used to study the mechanism and enantioselectivity of a binaphthophosphepine-catalyzed intramolecular [3 + 2] cycloaddition reaction. The computational results revealed that this reaction proceeds through nucleophilic addition of the phosphine catalyst to the allene, which yields a zwitterionic phosphonium intermediate. The subsequent stepwise [3 + 2] annulation process, which starts with the intramolecular nucleophilic addition of the allenoate moiety to the electron-deficient olefin group, determines the enantioselectivity of the reaction. This step is followed by a ring-closing reaction and water-assisted proton-transfer process to afford the final product with concomitant regeneration of the phosphine catalyst. Theoretical predictions of the enantioselectivity for various phosphine catalysts were consistent with experimental observations, and 2D contour maps played an important role in explaining the origin of the enantioselectivity. Moreover, on the basis of our theoretical study, new binaphthophosphepine catalysts were designed and that are expecting to afford higher enantioselectivity in this cycloaddition reaction.
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10
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Zhu L, Qi X, Li Y, Duan M, Zou L, Bai R, Lan Y. Ir(III)/Ir(V) or Ir(I)/Ir(III) Catalytic Cycle? Steric-Effect-Controlled Mechanism for the para-C–H Borylation of Arenes. Organometallics 2017. [DOI: 10.1021/acs.organomet.7b00151] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Lei Zhu
- School
of Chemistry and Chemical Engineering, Chongqing University, Chongqing 400030, China
| | - Xiaotian Qi
- School
of Chemistry and Chemical Engineering, Chongqing University, Chongqing 400030, China
| | - Yingzi Li
- School
of Chemistry and Chemical Engineering, Chongqing University, Chongqing 400030, China
| | - Meng Duan
- School
of Chemistry and Chemical Engineering, Chongqing University, Chongqing 400030, China
| | - Lufeng Zou
- Gaussian Inc., 340 Quinnipiac
Street, Building 40, Wallingford, Connecticut 06492, United States
| | - Ruopeng Bai
- School
of Chemistry and Chemical Engineering, Chongqing University, Chongqing 400030, China
| | - Yu Lan
- School
of Chemistry and Chemical Engineering, Chongqing University, Chongqing 400030, China
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11
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Horwitz MA, Massolo E, Johnson JS. Phosphazene-catalyzed desymmetrization of cyclohexadienones by dithiane addition. Beilstein J Org Chem 2017; 13:762-767. [PMID: 28546832 PMCID: PMC5433211 DOI: 10.3762/bjoc.13.75] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2017] [Accepted: 04/04/2017] [Indexed: 12/26/2022] Open
Abstract
We report a desymmetrization of cyclohexadienones by intramolecular conjugate addition of a tethered dithiane nucleophile. Mild reaction conditions allow the formation of diversely functionalized fused bicyclic lactones. The products participate in facially selective additions from the convex surface, leading to allylic alcohol derivatives.
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Affiliation(s)
- Matthew A Horwitz
- Department of Chemistry, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599-3290, USA
| | - Elisabetta Massolo
- Department of Chemistry, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599-3290, USA
| | - Jeffrey S Johnson
- Department of Chemistry, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599-3290, USA
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12
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Yue X, Qi X, Bai R, Lei A, Lan Y. Mononuclear or Dinuclear? Mechanistic Study of the Zinc-Catalyzed Oxidative Coupling of Aldehydes and Acetylenes. Chemistry 2017; 23:6419-6425. [DOI: 10.1002/chem.201700733] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2017] [Indexed: 11/10/2022]
Affiliation(s)
- Xiaoyu Yue
- School of Chemistry and Chemical Engineering; Chongqing University; Chongqing 400030 P. R. China
| | - Xiaotian Qi
- School of Chemistry and Chemical Engineering; Chongqing University; Chongqing 400030 P. R. China
- College of Chemistry and Molecular Sciences; Wuhan University, Wuhan; 430072 Hubei P. R. China
| | - Ruopeng Bai
- School of Chemistry and Chemical Engineering; Chongqing University; Chongqing 400030 P. R. China
| | - Aiwen Lei
- College of Chemistry and Molecular Sciences; Wuhan University, Wuhan; 430072 Hubei P. R. China
| | - Yu Lan
- School of Chemistry and Chemical Engineering; Chongqing University; Chongqing 400030 P. R. China
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13
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Zhang T, Qi X, Liu S, Bai R, Liu C, Lan Y. Computational Investigation of the Role Played by Rhodium(V) in the Rhodium(III)-Catalyzed ortho
-Bromination of Arenes. Chemistry 2017; 23:2690-2699. [DOI: 10.1002/chem.201605188] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2016] [Indexed: 01/13/2023]
Affiliation(s)
- Tao Zhang
- School of Chemistry and Chemical Engineering; Chongqing University; Chongqing 400030 P.R. China
| | - Xiaotian Qi
- School of Chemistry and Chemical Engineering; Chongqing University; Chongqing 400030 P.R. China
| | - Song Liu
- School of Chemistry and Chemical Engineering; Chongqing University; Chongqing 400030 P.R. China
| | - Ruopeng Bai
- School of Chemistry and Chemical Engineering; Chongqing University; Chongqing 400030 P.R. China
| | - Chao Liu
- State Key Laboratory for Oxo Synthesis and Selective Oxidation; Suzhou Research Institute of LICP; Lanzhou Institute of Chemical Physics (LICP); Chinese Academy of Sciences; Lanzhou P.R. China
| | - Yu Lan
- School of Chemistry and Chemical Engineering; Chongqing University; Chongqing 400030 P.R. China
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14
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Wang Y, Qiao Y, Wei D, Tang M. Computational study on NHC-catalyzed enantioselective and chemoselective fluorination of aliphatic aldehydes. Org Chem Front 2017. [DOI: 10.1039/c7qo00436b] [Citation(s) in RCA: 43] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
A mechanistic study on NHC-catalyzed enantioselective and chemoselective fluorination of aliphatic aldehydes 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
| | - Yan Qiao
- Department of Pathophysiology
- School of Basic Medical Sciences
- Zhengzhou University
- Zhengzhou
- P.R. China
| | - Donghui Wei
- College of Chemistry and Molecular Engineering
- Center of Computational Chemistry
- Zhengzhou University
- Zhengzhou
- P.R. China
| | - Mingsheng Tang
- College of Chemistry and Molecular Engineering
- Center of Computational Chemistry
- Zhengzhou University
- Zhengzhou
- P.R. China
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15
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Xu D, Shan C, Li Y, Qi X, Luo X, Bai R, Lan Y. Bond dissociation energy controlled σ-bond metathesis in alkaline-earth-metal hydride catalyzed dehydrocoupling of amines and boranes: a theoretical study. Inorg Chem Front 2017. [DOI: 10.1039/c7qi00459a] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Alkaline-earth-metal could catalyse the dehydrocoupling procedure of N–H and B–H bond due to the low Ae–H bond energy. The direct σ-bond metathesis procedure is proved to be unfavourable.
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Affiliation(s)
- Dongdong Xu
- School of Chemistry and Chemical Engineering
- Chongqing University
- Chongqing 400044
- P. R. China
| | - Chunhui Shan
- School of Chemistry and Chemical Engineering
- Chongqing University
- Chongqing 400044
- P. R. China
| | - Yingzi Li
- School of Chemistry and Chemical Engineering
- Chongqing University
- Chongqing 400044
- P. R. China
| | - Xiaotian Qi
- School of Chemistry and Chemical Engineering
- Chongqing University
- Chongqing 400044
- P. R. China
| | - Xiaoling Luo
- College of Chemistry
- Chongqing Normal University
- Chongqing 401331
- P. R. China
| | - Ruopeng Bai
- School of Chemistry and Chemical Engineering
- Chongqing University
- Chongqing 400044
- P. R. China
| | - Yu Lan
- School of Chemistry and Chemical Engineering
- Chongqing University
- Chongqing 400044
- P. R. China
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16
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Xu D, Qi X, Duan M, Yu Z, Zhu L, Shan C, Yue X, Bai R, Lan Y. Thiolate–palladium(iv) or sulfonium–palladate(0)? A theoretical study on the mechanism of palladium-catalyzed C–S bond formation reactions. Org Chem Front 2017. [DOI: 10.1039/c6qo00841k] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Thiolate–palladium(iv) intermediates are generated through oxidative addition in our suggested mechanisms, and are the key intermediates in these catalytic cycles.
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Affiliation(s)
- Dongdong Xu
- School of Chemistry and Chemical Engineering
- Chongqing University
- Chongqing 400044
- P. R. China
| | - Xiaotian Qi
- School of Chemistry and Chemical Engineering
- Chongqing University
- Chongqing 400044
- P. R. China
| | - Meng Duan
- School of Chemistry and Chemical Engineering
- Chongqing University
- Chongqing 400044
- P. R. China
| | - Zhaoyuan Yu
- School of Chemistry and Chemical Engineering
- Chongqing University
- Chongqing 400044
- P. R. China
| | - Lei Zhu
- School of Chemistry and Chemical Engineering
- Chongqing University
- Chongqing 400044
- P. R. China
| | - Chunhui Shan
- School of Chemistry and Chemical Engineering
- Chongqing University
- Chongqing 400044
- P. R. China
| | - Xiaoyu Yue
- School of Chemistry and Chemical Engineering
- Chongqing University
- Chongqing 400044
- P. R. China
| | - Ruopeng Bai
- School of Chemistry and Chemical Engineering
- Chongqing University
- Chongqing 400044
- P. R. China
| | - Yu Lan
- School of Chemistry and Chemical Engineering
- Chongqing University
- Chongqing 400044
- P. R. China
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