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Deshwal S, Gopalakrishnan DK, Purohit A, Karmakar T, Vaitla J. Diastereoselective cyclopropanation of α,β-unsaturated carbonyl compounds with vinyl sulfoxonium ylides. Org Biomol Chem 2024; 22:6294-6307. [PMID: 39045784 DOI: 10.1039/d4ob00677a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/25/2024]
Abstract
Herein, we report a three-component stereoselective cyclopropanation of vinyl sulfoxonium ylides with indane 1,3-dione and aldehydes under mild reaction conditions. In contrast to previous reports, the present work shows that electrophilic addition selectively takes place at the α-position of the vinyl sulfoxonium ylide. The interesting feature of this approach is that the multicomponent reaction selectively proceeds because of the difference in nucleophilic reactivity of vinyl sulfoxonium ylides and indane 1,3-dione with electrophilic partners, such as aldehydes and in situ generated arylidenes. Additionally, density functional theory (DFT) studies were conducted to investigate the difference in the reactivity of these reactants, as well as to unveil the mechanism of this three-component reaction. Furthermore, non-covalent interactions of selectivity-determining transition states explain the origin of the diastereoselectivity of cyclopropanation.
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Affiliation(s)
- Shalu Deshwal
- Department of Chemistry, Indian Institute of Technology Delhi, Hauz Khas, New Delhi, 110016, India.
| | | | - Alok Purohit
- Department of Chemistry, Indian Institute of Technology Delhi, Hauz Khas, New Delhi, 110016, India.
| | - Tarak Karmakar
- Department of Chemistry, Indian Institute of Technology Delhi, Hauz Khas, New Delhi, 110016, India.
| | - Janakiram Vaitla
- Department of Chemistry, Indian Institute of Technology Delhi, Hauz Khas, New Delhi, 110016, India.
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2
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Zhang M, Zhang Z, Li Y. Mechanisms and Origins of Regio- and Stereoselectivities in NHC-Catalyzed [3 + 3] Annulation of α-Bromoenals and 5-Aminoisoxazoles: A DFT Study. J Org Chem 2024; 89:10748-10759. [PMID: 38996054 DOI: 10.1021/acs.joc.4c00980] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/14/2024]
Abstract
Density functional theory (DFT) calculations were conducted to explore the mechanisms and origins of regio- and stereoselectivities underlying the [3 + 3] annulation reaction between α-bromoenals and 5-aminoisoxazoles with N-heterocyclic carbene (NHC) as the catalyst. The reaction occurs in nine steps: (1) nucleophilic addition of NHC to α-bromoenal, (2) Breslow intermediate formation through 1,2-proton transfer, (3) debromination, (4) α,β-unsaturated acyl azolium intermediate formation via 1,3-proton transfer, (5) addition of α,β-unsaturated acyl azolium intermediate to 5-aminoisoxazole, (6) deprotonation, (7) protonation, (8) ring closure, and (9) elimination of NHC. For the fifth step, 1,2-addition suggested in the experiment was not supported by our results. Instead, we found that Michael addition is energetically the most feasible pathway and the stereo-controlling step that preferentially provides the S-configuration product. DFT-computed results and experimental findings agree well. Analysis of distortion/interaction reveals that lower distortion energy leads to stability of the transition state corresponding to the S-configuration product. Global reactivity index analysis indicates that the behavior of the NHC catalyst differs significantly before and after the Breslow intermediate debromination. Before debromination, the nucleophilicity of α-bromoenal is enhanced by addition to NHC. However, after debromination, the α,β-unsaturated acyl azole generates and acts as an electrophilic reagent.
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Affiliation(s)
- Mingchao Zhang
- School of Chemical Engineering, University of Science and Technology Liaoning, Anshan 114051, P. R. China
| | - Zhiqiang Zhang
- School of Chemical Engineering, University of Science and Technology Liaoning, Anshan 114051, P. R. China
| | - Yan Li
- School of Chemical Engineering, University of Science and Technology Liaoning, Anshan 114051, P. R. China
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3
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Luo Y, Zhao M, Wang Y. Mechanism and Origin of Stereoselectivity of N-Heterocyclic Carbene (NHC)-Catalyzed Transformation Reaction of Benzaldehyde with o-QDM as Key Intermediate: A DFT Study. J Phys Chem A 2024; 128:6190-6198. [PMID: 39024177 DOI: 10.1021/acs.jpca.4c02522] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/20/2024]
Abstract
N-heterocyclic carbene (NHC)-bound ortho-quinodimethane, served as a nucleophile, has occupied an important position for constructing various all-carbon or heterocyclic compounds and attracted increasing attention for the functionalization of benzylic carbon of aromatic aldehydes, whereas the mechanistic studies on the generation and transformations of dienolate intermediate are rare. In the present study, the mechanism of activation/transformation of aldehyde catalyzed by NHC was theoretically studied using the density functional theory (DFT) method. Based on the calculations, the nucleophilic addition process is the stereoselectivity-determining step with RS-configured product being generated preferentially. Furthermore, non-covalent index (NCI) and atoms-in-molecules (AIM) analyses have been performed to disclose the origin of stereoselectivity, by which the larger number and stronger weak interactions are the key for stabilizing the low-energy transition state and thus leading to the stereoselectivity inducing.
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Affiliation(s)
- Yilu Luo
- Department of Material and Chemical Engineering, Zhengzhou University of Light Industry, 136 Science Avenue, Zhengzhou 450001, Henan, P. R. China
| | - Miao Zhao
- Department of Pathology, Children's Hospital Affiliated to Zhengzhou University, Henan Children's Hospital & Zhengzhou Children's Hospital, Zhengzhou 450018, Henan, P. R. China
| | - Yang Wang
- Department of Material and Chemical Engineering, Zhengzhou University of Light Industry, 136 Science Avenue, Zhengzhou 450001, Henan, P. R. China
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4
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Zhang L, Wang Y. NHC-catalyzed N-H functionalization/cycloaddition reaction of indole aldehyde and ketone: A DFT perspective. COMPUT THEOR CHEM 2022. [DOI: 10.1016/j.comptc.2022.114007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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5
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Zhang J, Qiao Q, Wu Z, Pang Z, Shi Q, Qiao Y, Wang Y, wei D. Mechanism and origin of selectivities for NHC-catalyzed synthesis of axially chiral benzothiophene/benzofuran-fused biaryls. Org Biomol Chem 2022; 20:1662-1670. [DOI: 10.1039/d1ob02429a] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
By performing density functional theory (DFT) calculations, we investigated and identified the fundamental pathway for N-heterocyclic carbene (NHC)-catalyzed synthesis of axially chiral benzothiophene-fused biaryl using enal and 2-benzyl-benzothiophene-3-carbaldehyde, which includes...
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6
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Li Y, Geng L, Song Z, Zhang Z. A DFT study of NHC-catalyzed reactions between 2-bromo-2-enals and acylhydrazones: mechanisms, and chemo- and stereoselectivities. NEW J CHEM 2022. [DOI: 10.1039/d2nj01078j] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
The reaction mechanisms and origins of the chemo- and stereoselectivities of NHC-catalyzed [4 + 2] annulation of 2-bromo-2-enals and acylhydrazones.
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Affiliation(s)
- Yan Li
- School of Chemical Engineering, University of Science and Technology Liaoning, Anshan, 114051, P. R. China
| | - Lina Geng
- School of Chemical Engineering, University of Science and Technology Liaoning, Anshan, 114051, P. R. China
| | - Zhiyi Song
- School of Chemical Engineering, University of Science and Technology Liaoning, Anshan, 114051, P. R. China
| | - Zhiqiang Zhang
- School of Chemical Engineering, University of Science and Technology Liaoning, Anshan, 114051, P. R. China
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Liang PY, Dai Y, Lu K, Yan CX, Liu Y, Zhou PP, Yang Z. DABCO-mediated [4 + 4]-domino annulation reactions of ynones and α-cyano-α,β-unsaturated ketones: Mechanisms and the role of DABCO. COMPUT THEOR CHEM 2021. [DOI: 10.1016/j.comptc.2021.113396] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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8
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Hosseinzadeh E, Heydari A. N-Heterocyclic carbene (NHC)-catalyzed oxidative [3+2] annulation of dioxindoles and enals: mechanism, role of NHC, role of a mixture of bases with different strength, and origin of stereoselectivity. Phys Chem Chem Phys 2020; 22:28269-28276. [PMID: 33295368 DOI: 10.1039/d0cp05129b] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Over recent years, in-depth understanding of the mechanism of oxidative N-heterocyclic carbene (NHC) catalyzed reactions in the presence of a mild oxidant and the structure of key radical intermediates have been considered as an important challenge in organic chemistry. Furthermore, the role of using a mixture of bases with different strengths is unclear in NHC-catalyzed reactions. In this paper, the detailed competing oxidative mechanisms, origin of stereoselectivity, and role of the NHC-organocatalyst in the NHC-catalyzed reactions of dioxindoles with enals were studied using the density functional theory method. In addition, the roles of newly produced Brønsted acids of the applied bases, i.e.DBU·H+ and DABCO·H+, are examined. The computational results indicated that the oxidation of the Breslow intermediate by nitrobenzene (NB) occurs first through a hydrogen atom transfer (HAT) pathway from the Breslow intermediate, and then it is oxidized into acyl azolium by single electron transfer (SET). We found that the energy barrier of the proton transfer processes is remarkably reduced by the conjugated Brønsted acid of the weaker base in the solution. Further, the calculated results revealed that the NHC catalyst has different behavior before and after the oxidation of the Breslow intermediate in these reactions. Before oxidation, the nucleophilicity of R1 increased by adding R1 to NHC, while, after the oxidation process, the electrophilicity of R1 increases, and as a result the product of oxidation, α, β unsaturated acyl azolium, acts as an electrophile. This mechanistic study paves the way for the rational design of oxidative NHC-catalyzed reactions.
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Affiliation(s)
- Elaheh Hosseinzadeh
- Department of Chemistry, Tarbiat Modares University, P.O. Box 14115-175, Tehran, Iran.
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9
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Origin of diastereoselectivity and catalytic efficiency on Isothiourea-mediated cyclization of carboxylic acid with alkenyl ketone. COMPUT THEOR CHEM 2020. [DOI: 10.1016/j.comptc.2020.113004] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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10
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Ahmadi A, Kassaee MZ, Ayoubi-Chianeh M, Fattahi A. New pathways of stability for NHCs derived from azole, di-azole, n-tetrazole, and ab-tetrazole, by DFT. J Mol Model 2020; 26:324. [PMID: 33126264 DOI: 10.1007/s00894-020-04575-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2020] [Accepted: 10/15/2020] [Indexed: 10/23/2022]
Abstract
We have investigated the pathways of stability for NHCs derived from azole, di-azole, n-tetrazole, and ab-tetrazole (1a, 2a, 3a, and 4a, respectively), at the M06/6-311++G** level of theory. Optimization and vibrational frequency calculations of ground states (GS) and transition states (TS) are performed to identify Gibbs free energies and nature of stationary points, respectively. Two possible pathways of stability for 1a-4a are compared and contrasted which entail dimerization through hydrogen bonding (HB) and covalent bonding (CB). The CB pathway comprises head to head (HH) and head to tail (HT) dimerizations. Plausible reaction profiles are illustrated for 1a-4a along with the mechanism of each dimerization. Structures 1a-3a show one possibility for HB while 4a represents two possibilities. Structures 1a and 4a display two HH dimers while 2a and 3a show one. Structures 1a-4a undergo HT dimerizations to yield three possible dimers which include trans, cis, and [2+3] isomers. Interestingly, for all 1a-4a, HB dimerization turns out as the most favorable stability pathway for showing no barrier of reaction. Structures 4b and 4c indicate the highest stability with respect to their initial 4a compared to remaining HB dimers 1b-3b. In addition, the 1,2-H shift appears as a possible rearrangement for 1a-4a to yield their corresponding tautomers (1i, 2h, 3h, and 4k, respectively). The reaction profile of this rearrangement indicates that 1a-4a favor HB dimerization pathway more than 1,2-H shift, in terms of kinetic and thermodynamic. Graphical Abstract.
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Affiliation(s)
- Aliakbar Ahmadi
- Department of Chemistry, Tarbiat Modares University, Tehran, Iran
| | | | | | - Alireza Fattahi
- Department of Chemistry, Sharif University of Technology, Tehran, Iran
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11
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Wang Y, Qu LB, Wei D, Lan Y. Unveiling the Chemo- and Stereoselectivities of NHC-Catalyzed Reactions of an Aliphatic Ester with Aminochalcone. J Org Chem 2020; 85:8437-8446. [PMID: 32529828 DOI: 10.1021/acs.joc.0c00769] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
The possible mechanisms and origin of selectivities in N-heterocyclic carbene (NHC)-catalyzed reactions of an aliphatic ester with aminochalcone were studied using density functional theory. Herein, a general mechanistic map involving various types of possible intermediates was discovered, and the corresponding chemoselective pathways were systematically investigated. Based on the computational results, the most energetically favorable reaction pathway mainly involved in the following processes: formation of a homoenolate intermediate via α/β-H elimination, formal Michael addition of a homoenolate intermediate to aminochalcone, intramolecular aldol-type reaction, and ring closure to form the lactam product. Furthermore, the formal Michael addition process was shown to be the stereoselectivity-determining step, generating the RR-configured product preferentially. The chemoselectivity was successfully predicted by comparing the ω + N index of reacting ability for a nucleophile (N) and electrophile (E). This work would provide a general guideline for predicting chemoselectivity in NHC-catalyzed reactions.
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Affiliation(s)
- Yang Wang
- Department of Material and Chemical Engineering, Zhengzhou University of Light Industry, 136 Science Avenue, Zhengzhou, Henan 450002, P. R. China
| | - Ling-Bo Qu
- College of Chemistry, Zhengzhou University, 100 Science Avenue, Zhengzhou, Henan 450001, P. R. China
| | - Donghui Wei
- College of Chemistry, Zhengzhou University, 100 Science Avenue, Zhengzhou, Henan 450001, P. R. China
| | - Yu Lan
- College of Chemistry, Zhengzhou University, 100 Science Avenue, Zhengzhou, Henan 450001, P. R. China.,School of Chemistry and Chemical Engineering, Chongqing Key Laboratory of Theoretical and Computational Chemistry, Chongqing University, Chongqing 400030, P. R. China
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12
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Wang Y, Wei D. Mechanistic investigation of N-heterocyclic carbene and Na2CO3 cooperatively catalyzed C(sp3)-F bond activation reaction of fluoroenal. MOLECULAR CATALYSIS 2020. [DOI: 10.1016/j.mcat.2020.110944] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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13
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Computational Study on N-Heterocyclic Carbene (NHC)-Catalyzed Intramolecular Hydroacylation-Stetter Reaction Cascade. MOLECULAR CATALYSIS 2020. [DOI: 10.1016/j.mcat.2019.110723] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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14
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Wang Y, Lan Y. Mechanism and origin of diastereoselectivity of N-heterocyclic carbene-catalyzed cross-benzoin reaction: A DFT study. CHINESE CHEM LETT 2020. [DOI: 10.1016/j.cclet.2019.08.010] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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15
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Wang Y, Qu L, Lan Y, Wei D. Origin of Regio‐ and Stereoselectivity in the NHC‐catalyzed Reaction of Alkyl Pyridinium with Aliphatic Enal. ChemCatChem 2019. [DOI: 10.1002/cctc.201901965] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Yang Wang
- Department of Material and Chemical EngineeringZhengzhou University of Light Industry 136 Science Avenue 450001 Zhengzhou, Henan province P. R. China
| | - Ling‐Bo Qu
- College of ChemistryZhengzhou University 100 Science Avenue 450002 Zhengzhou, Henan province P. R. China
| | - Yu Lan
- College of ChemistryZhengzhou University 100 Science Avenue 450002 Zhengzhou, Henan province P. R. China
- School of Chemistry and Chemical Engineering, Chongqing Key Laboratory of Theoretical and Computational ChemistryChongqing University
| | - Donghui Wei
- College of ChemistryZhengzhou University 100 Science Avenue 450002 Zhengzhou, Henan province P. R. China
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16
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Unravelling the Mechanism and Selectivity of the NHC‐catalyzed Three‐Membered Ring‐Opening/Fluorination of Epoxy Enals: A DFT Study. ChemCatChem 2019. [DOI: 10.1002/cctc.201900424] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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17
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Liu Q, Sun L, Li S, Li X, Qu L, Lan Y, Wei D. Insights into N‐Heterocyclic Carbene (NHC)‐Catalyzed Asymmetric Addition of 2H‐Azirine with Aldehyde. Chem Asian J 2019; 14:2000-2007. [DOI: 10.1002/asia.201900076] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2019] [Revised: 03/14/2019] [Indexed: 12/15/2022]
Affiliation(s)
- Qiuli Liu
- The College of Chemistry and Molecular EngineeringZhengzhou University No. 100 Kexue Street Zhengzhou Henan 450001 P. R. China
| | - Ling Sun
- Basic Teaching DepartmentHuanghe Jiaotong University No. 333 Yingbin Road Wuzhi Henan 454950 P. R. China
| | - Shi‐Jun Li
- The College of Chemistry and Molecular EngineeringZhengzhou University No. 100 Kexue Street Zhengzhou Henan 450001 P. R. China
| | - Xue Li
- The College of Chemistry and Molecular EngineeringZhengzhou University No. 100 Kexue Street Zhengzhou Henan 450001 P. R. China
| | - Ling‐Bo Qu
- The College of Chemistry and Molecular EngineeringZhengzhou University No. 100 Kexue Street Zhengzhou Henan 450001 P. R. China
| | - Yu Lan
- The College of Chemistry and Molecular EngineeringZhengzhou University No. 100 Kexue Street Zhengzhou Henan 450001 P. R. China
| | - Donghui Wei
- The College of Chemistry and Molecular EngineeringZhengzhou University No. 100 Kexue Street Zhengzhou Henan 450001 P. R. China
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Li Y, Zhang Z. Mechanisms and Stereoselectivities of NHC-Catalyzed [3 + 4] Cycloaddition Reaction between Isatin-Derived Enal and N-(ortho
-Chloromethyl)aryl Amide. European J Org Chem 2019. [DOI: 10.1002/ejoc.201900087] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Yan Li
- School of Chemical Engineering; University of Science and Technology Liaoning; 114051 Anshan P. R. China
| | - Zhiqiang Zhang
- School of Chemical Engineering; University of Science and Technology Liaoning; 114051 Anshan P. R. China
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Li X, Duan R, Wang Y, Qu LB, Li Z, Wei D. Insights into N-Heterocyclic Carbene-Catalyzed Oxidative α-C(sp 3)-H Activation of Aliphatic Aldehydes and Cascade [2 + 2] Cycloaddition with Ketimines. J Org Chem 2019; 84:6117-6125. [PMID: 31012584 DOI: 10.1021/acs.joc.9b00295] [Citation(s) in RCA: 38] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Predicting the chemoselectivity of [2 + 2] cyclizations is an important challenge in organic chemistry. Herein, we provided a valuable case for this issue. Density functional theory calculations were performed to systematically study the possible mechanisms and origin of selectivities for the N-heterocyclic carbene (NHC)-catalyzed oxidative α-C(sp3)-H activation of aliphatic aldehydes and the cascade [2 + 2] cycloaddition with ketimines. The [2 + 2] cycloaddition of azolium enolate intermediates to the C═N bond, rather than the C═O bond of ketimine, is revealed to be determined by chemo- and stereoselectivity. By comparing the energy gap between the frontier molecular orbitals (FMOs) of the two reacting parts involved in the [2 + 2] cycloaddition transition states, we propose a new strategy to determine the origin of the reaction chemoselectivity. Moreover, the local nucleophilic index can efficiently predict the active site of ketimines. Further analyses illustrate that NHC can increase the nucleophilicity of aldehydes and the acidity of the α-C(sp3)-H bond, and 3,3',5,5'-tetra- tert-butyl diphenoquinone (DQ) acts as an oxidant and promotes α-C(sp3)-H bond deprotonation. This work is useful not only for understanding the NHC-catalyzed oxidative [2 + 2] annulation but also for developing new applications of the FMO theory in organocatalytic cyclizations.
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Affiliation(s)
- Xue Li
- The College of Chemistry and Molecular Engineering , Zhengzhou University , 100 Science Avenue , Zhengzhou , Henan 450001 , P. R. China
| | - Ruihong Duan
- The College of Chemistry and Molecular Engineering , Zhengzhou University , 100 Science Avenue , Zhengzhou , Henan 450001 , P. R. China
| | - Yanyan Wang
- The College of Chemistry and Molecular Engineering , Zhengzhou University , 100 Science Avenue , Zhengzhou , Henan 450001 , P. R. China
| | - Ling-Bo Qu
- The College of Chemistry and Molecular Engineering , Zhengzhou University , 100 Science Avenue , Zhengzhou , Henan 450001 , P. R. China
| | - Zhongjun Li
- The College of Chemistry and Molecular Engineering , Zhengzhou University , 100 Science Avenue , Zhengzhou , Henan 450001 , P. R. China
| | - Donghui Wei
- The College of Chemistry and Molecular Engineering , Zhengzhou University , 100 Science Avenue , Zhengzhou , Henan 450001 , P. R. China
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20
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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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21
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Zhang QC, Li X, Wang X, Li SJ, Qu LB, Lan Y, Wei D. Insights into highly selective ring expansion of oxaziridines under Lewis base catalysis: a DFT study. Org Chem Front 2019. [DOI: 10.1039/c8qo01370e] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
The possible mechanism and stereoselectivity of the NHC-catalyzed ring expansion reaction of oxaziridines have been theoretically studied for the first time.
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Affiliation(s)
- Qiao-Chu Zhang
- The College of Chemistry and Molecular Engineering
- Zhengzhou University
- Zhengzhou
- P.R. China
| | - Xue Li
- The College of Chemistry and Molecular Engineering
- Zhengzhou University
- Zhengzhou
- P.R. China
| | - Xinghua Wang
- The College of Chemistry and Molecular Engineering
- Zhengzhou University
- Zhengzhou
- P.R. China
| | - Shi-Jun Li
- The College of Chemistry and Molecular Engineering
- Zhengzhou University
- Zhengzhou
- P.R. China
| | - Ling-Bo Qu
- The College of Chemistry and Molecular Engineering
- Zhengzhou University
- Zhengzhou
- P.R. China
| | - Yu Lan
- The College of Chemistry and Molecular Engineering
- Zhengzhou University
- Zhengzhou
- P.R. China
- School of Chemistry and Chemical Engineering
| | - Donghui Wei
- The College of Chemistry and Molecular Engineering
- Zhengzhou University
- Zhengzhou
- P.R. China
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22
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Gao J, Wang Y. Mechanistic studies on the N-heterocyclic carbene-catalyzed reaction of isatin-derived enals with hydrazones. Org Biomol Chem 2019; 17:7442-7447. [DOI: 10.1039/c9ob01317b] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
The detailed mechanism and origin of stereoselectivity of the NHC-catalyzed annulation reaction were investigated.
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Affiliation(s)
- Jinxin Gao
- Department of Cooking Food
- Henan Polytechnic
- Zhengzhou
- P. R. China
| | - Yang Wang
- Department of Material and Chemical Engineering
- Zhengzhou University of Light Industry
- Zhengzhou
- P. R. China
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23
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Zhao M, Xiao Y, Qiao Y. Mechanistic insights and origin of chemoselectivity for S–O bond cleavage in dinitrobenzenesulfonic carbamates. NEW J CHEM 2019. [DOI: 10.1039/c9nj03770e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A computational study on the NHC-catalyzed chemoselective S–O bond cleavage in dinitrobenzenesulfonic carbamates.
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Affiliation(s)
- Miao Zhao
- Department of Pathophysiology
- School of Basic Medical Sciences
- Zhengzhou University
- Zhengzhou
- China
| | - Yang Xiao
- Department of Pathophysiology
- School of Basic Medical Sciences
- Zhengzhou University
- Zhengzhou
- China
| | - Yan Qiao
- Department of Pathophysiology
- School of Basic Medical Sciences
- Zhengzhou University
- Zhengzhou
- China
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24
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Shi Q, Wang W, Wang Y, Lan Y, Yao C, Wei D. Prediction on the origin of chemoselectivity in Lewis base-mediated competition cyclizations between allenoates and chalcones: a computational study. Org Chem Front 2019. [DOI: 10.1039/c9qo00606k] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
The HOMOTSs and p-orbital contributions of the center atoms were used to predict the origin of chemoselectivity in this work.
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Affiliation(s)
- Qianqian Shi
- College of Chemistry and Molecular Engineering
- and School of Basic Medical Sciences
- Zhengzhou University
- Zhengzhou
- P. R. China
| | - Wei Wang
- College of Chemistry and Molecular Engineering
- and School of Basic Medical Sciences
- Zhengzhou University
- Zhengzhou
- P. R. China
| | - Yang Wang
- Department of Material and Chemical Engineering
- Zhengzhou University of Light Industry
- Zhengzhou
- P. R. China
| | - Yu Lan
- College of Chemistry and Molecular Engineering
- and School of Basic Medical Sciences
- Zhengzhou University
- Zhengzhou
- P. R. China
| | - Changsheng Yao
- Jiangsu Key Lab of Green Synthetic Chemistry for Functional Materials
- School of Chemistry & Materials Science
- Jiangsu Normal University
- Xuzhou
- P. R. China
| | - Donghui Wei
- College of Chemistry and Molecular Engineering
- and School of Basic Medical Sciences
- Zhengzhou University
- Zhengzhou
- P. R. China
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25
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Li X, Li SJ, Wang Y, Wang Y, Qu LB, Li Z, Wei D. Insights into NHC-catalyzed oxidative α-C(sp3)–H activation of aliphatic aldehydes and cascade [2 + 3] cycloaddition with azomethine imines. Catal Sci Technol 2019. [DOI: 10.1039/c9cy00526a] [Citation(s) in RCA: 42] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
The NHC catalyst is identified to promote [2 + 3] cycloaddition by avoiding the poor FMO overlap mode in theory.
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Affiliation(s)
- Xue Li
- The College of Chemistry and Molecular Engineering
- Zhengzhou University
- Zhengzhou
- P.R. China
| | - Shi-Jun Li
- The College of Chemistry and Molecular Engineering
- Zhengzhou University
- Zhengzhou
- P.R. China
| | - Yanyan Wang
- The 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
| | - Ling-Bo Qu
- The College of Chemistry and Molecular Engineering
- Zhengzhou University
- Zhengzhou
- P.R. China
| | - Zhongjun Li
- The College of Chemistry and Molecular Engineering
- Zhengzhou University
- Zhengzhou
- P.R. China
| | - Donghui Wei
- The College of Chemistry and Molecular Engineering
- Zhengzhou University
- Zhengzhou
- P.R. China
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26
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Qiao Y, Zhao J, Chang J, Wei D. Insights into the Oxidative Palladium-Catalyzed Regioselective Synthesis of 3-Arylindoles from N−Ts-Anilines and Styrenes: A Computational Study. ChemCatChem 2018. [DOI: 10.1002/cctc.201801531] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- Yan Qiao
- School of Basic Medical Sciences; Zhengzhou University; Zhengzhou 450001 P.R. China
| | - Jimin Zhao
- School of Basic Medical Sciences; Zhengzhou University; Zhengzhou 450001 P.R. China
| | - Junbiao Chang
- College of Chemistry and Molecular Engineering; Zhengzhou University; 100 Science Avenue Zhengzhou Henan Province 450001 P.R. China
| | - Donghui Wei
- College of Chemistry and Molecular Engineering; Zhengzhou University; 100 Science Avenue Zhengzhou Henan Province 450001 P.R. China
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27
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Wang Y, Qu L, Wei D. Prediction on the Origin of Selectivities in Base‐controlled Switchable NHC‐catalyzed Transformations. Chem Asian J 2018; 14:293-300. [DOI: 10.1002/asia.201801583] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2018] [Revised: 11/28/2018] [Indexed: 12/26/2022]
Affiliation(s)
- Yang Wang
- Department of Material and Chemical EngineeringZhengzhou University of Light Industry 136 Science Avenue Zhengzhou Henan Province 450002 P. R. China
| | - Ling‐Bo Qu
- College of Chemistry and Molecular EngineeringZhengzhou University 100 Science Avenue Zhengzhou Henan Province 450002 P. R. China
| | - Donghui Wei
- College of Chemistry and Molecular EngineeringZhengzhou University 100 Science Avenue Zhengzhou Henan Province 450002 P. R. China
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28
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Selg C, Kraft FB, Welcke L, Zeitler K. A Catalytic Strategy for α,ω‐Functionalization: NHC‐Mediated Fragmentation/Umpolung Cascades to Access Hydroxytrifluoromethyl Ynones and Allenones. ChemCatChem 2018. [DOI: 10.1002/cctc.201801454] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Affiliation(s)
- Christoph Selg
- Institut für Organische ChemieUniversität Leipzig Johannisallee 29 04103 Leipzig Germany
| | - Fabian B. Kraft
- Institut für Organische ChemieUniversität Leipzig Johannisallee 29 04103 Leipzig Germany
| | - Linda Welcke
- Institut für Organische ChemieUniversität Leipzig Johannisallee 29 04103 Leipzig Germany
| | - Kirsten Zeitler
- Institut für Organische ChemieUniversität Leipzig Johannisallee 29 04103 Leipzig Germany
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29
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Liu Q, Li SJ, Li. X, Qu LB, Wei D. A Computational Study on the 4-Dimethylaminopyridine (DMAP)-Catalyzed Regioselective [2+4] Cyclization of Allenic Ester with Cyclic Ketimine. ChemistrySelect 2018. [DOI: 10.1002/slct.201802267] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Qiuli Liu
- The College of Chemistry and Molecular Engineering; Center of Computational Chemistry; Zhengzhou University; 100 Science Avenue Zhengzhou Henan Province 450001 P. R. China
| | - Shi-Jun Li
- The College of Chemistry and Molecular Engineering; Center of Computational Chemistry; Zhengzhou University; 100 Science Avenue Zhengzhou Henan Province 450001 P. R. China
| | - Xue Li.
- The College of Chemistry and Molecular Engineering; Center of Computational Chemistry; Zhengzhou University; 100 Science Avenue Zhengzhou Henan Province 450001 P. R. China
| | - Ling-Bo Qu
- The College of Chemistry and Molecular Engineering; Center of Computational Chemistry; Zhengzhou University; 100 Science Avenue Zhengzhou Henan Province 450001 P. R. China
| | - Donghui Wei
- The College of Chemistry and Molecular Engineering; Center of Computational Chemistry; Zhengzhou University; 100 Science Avenue Zhengzhou Henan Province 450001 P. R. China
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30
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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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31
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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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32
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Yan CX, Zhou PP, Yang FL, Wu RZ, Yang X, Yang F, Shao X. Chiral bisoxazoline catalyzed decarboxylative aldol reactions between β-carbonyl acids and trifluoroacetaldehyde hemiacetals as well as trifluoroacetaldehyde: the mechanism, the origin of enantioselectivity and the role of a catalyst. Org Chem Front 2018. [DOI: 10.1039/c8qo00578h] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
The role of a catalyst in the decarboxylative aldol reactions between β-carbonyl acids and trifluoroacetaldehyde hemiacetals as well as trifluoroacetaldehyde catalyzed by chiral bisoxazoline were unveiled theoretically.
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Affiliation(s)
- Chao-Xian Yan
- State Key Laboratory of Applied Organic Chemistry
- Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province
- College of Chemistry and Chemical Engineering
- Lanzhou University
- Lanzhou 730000
| | - Pan-Pan Zhou
- State Key Laboratory of Applied Organic Chemistry
- Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province
- College of Chemistry and Chemical Engineering
- Lanzhou University
- Lanzhou 730000
| | - Fang-Ling Yang
- State Key Laboratory of Applied Organic Chemistry
- Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province
- College of Chemistry and Chemical Engineering
- Lanzhou University
- Lanzhou 730000
| | - Rui-Zhi Wu
- State Key Laboratory of Applied Organic Chemistry
- Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province
- College of Chemistry and Chemical Engineering
- Lanzhou University
- Lanzhou 730000
| | - Xing Yang
- State Key Laboratory of Applied Organic Chemistry
- Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province
- College of Chemistry and Chemical Engineering
- Lanzhou University
- Lanzhou 730000
| | - Fan Yang
- State Key Laboratory of Applied Organic Chemistry
- Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province
- College of Chemistry and Chemical Engineering
- Lanzhou University
- Lanzhou 730000
| | - Xiangfeng Shao
- State Key Laboratory of Applied Organic Chemistry
- Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province
- College of Chemistry and Chemical Engineering
- Lanzhou University
- Lanzhou 730000
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