1
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Li T, Wei L, Wang Z, Zhang X, Yang J, Wei Y, Li P, Xu L. Vinylcyclopropane-Cyclopentene (VCP-CP) Rearrangement Enabled by Pyridine-Assisted Boronyl Radical Catalysis. Org Lett 2024; 26:5341-5346. [PMID: 38875468 DOI: 10.1021/acs.orglett.4c01724] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/16/2024]
Abstract
An unprecedented VCP-CP (vinylcyclopropane-cyclopentene) rearrangement approach has been established herein by virtue of the pyridine-boronyl radical catalyzed intramolecular ring expansions. This metal-free radical pathway harnesses readily available catalysts and unactivated vinylcyclopropane starting materials, providing an array of cyclopentene derivatives chemoselectively under relatively mild conditions. Mechanistic studies support the idea that the boronyl radical engages in the generation of allylic/ketyl radical species, thus inducing the ring opening of cyclopropanes and the following intramolecular cyclization processes.
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Affiliation(s)
- Ting Li
- School of Chemistry and Chemical Engineering/State Key Laboratory Incubation Base for Green Processing of Chemical Engineering, Shihezi University, Shihezi 832003, China
| | - Lanfeng Wei
- School of Chemistry and Chemical Engineering/State Key Laboratory Incubation Base for Green Processing of Chemical Engineering, Shihezi University, Shihezi 832003, China
- Xinjiang Key Laboratory of Coal Mine Disasters Intelligent Prevention and Emergency Response, Xinjiang Institute of Engineering, Urumqi 830023, China
| | - Zhijun Wang
- School of Chemistry and Chemical Engineering/State Key Laboratory Incubation Base for Green Processing of Chemical Engineering, Shihezi University, Shihezi 832003, China
| | - Xinyu Zhang
- School of Chemistry and Chemical Engineering/State Key Laboratory Incubation Base for Green Processing of Chemical Engineering, Shihezi University, Shihezi 832003, China
| | - Jinbo Yang
- School of Chemistry and Chemical Engineering/State Key Laboratory Incubation Base for Green Processing of Chemical Engineering, Shihezi University, Shihezi 832003, China
| | - Yu Wei
- School of Chemistry and Chemical Engineering/State Key Laboratory Incubation Base for Green Processing of Chemical Engineering, Shihezi University, Shihezi 832003, China
| | - Pengfei Li
- Frontier Institute of Science and Technology, Xi'an Jiaotong University, Xi'an 710054, China
| | - Liang Xu
- School of Chemistry and Chemical Engineering/State Key Laboratory Incubation Base for Green Processing of Chemical Engineering, Shihezi University, Shihezi 832003, China
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2
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Ham JS, Son M, Na CG, Park B, Baik MH, Sarpong R. Construction of Seven-Membered Oxacycles Using a Rh(I)-Catalyzed Cascade C-C Formation/Cleavage of Cyclobutenol Derivatives. J Org Chem 2024; 89:4647-4656. [PMID: 38497619 DOI: 10.1021/acs.joc.3c02914] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/19/2024]
Abstract
Herein, we describe the synthesis of substituted oxepane derivatives through the skeletal remodeling of 4-hydroxy-2-cyclobutenones, which are readily prepared from commercially available dialkyl squarates upon their reaction with acrylonitrile. Mechanistically, a Rh(I)-catalyzed C-C bond formation and cleavage cascade is proposed. Specifically, a fused [3.2.0] bicycle is proposed to form from dialkyl squarate-derived cyclobutenols via an unusual Rh(I)-catalyzed intermolecular oxa-Michael addition of a tertiary alcohol with acrylonitrile, followed by an intramolecular conjugate addition/migratory insertion. Subsequent C(sp3)-C(sp3) bond cleavage through a Rh-catalyzed β-carbon elimination is then theorized to furnish the oxepane scaffold. Computational studies support the formation of an intermediate [3.2.0] bicycle but also point to an alternative pathway for the formation of the oxepane products involving a Rh(III) intermediate. Additional studies have shown the overall process to be stereoretentive. The functional groups that are introduced in this process can be leveraged to form fused or bridged ring systems.
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Affiliation(s)
- Jin Su Ham
- Department of Chemistry, University of California, Berkeley, California 94720, United States
| | - Mina Son
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea
- Center for Catalytic Hydrocarbon Functionalizations, Institute for Basic Science (IBS), Daejeon 34141, Republic of Korea
| | - Christina G Na
- Department of Chemistry, University of California, Berkeley, California 94720, United States
| | - Bohyun Park
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea
- Center for Catalytic Hydrocarbon Functionalizations, Institute for Basic Science (IBS), Daejeon 34141, Republic of Korea
| | - Mu-Hyun Baik
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea
- Center for Catalytic Hydrocarbon Functionalizations, Institute for Basic Science (IBS), Daejeon 34141, Republic of Korea
| | - Richmond Sarpong
- Department of Chemistry, University of California, Berkeley, California 94720, United States
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3
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Zhang C, Wang DS, Lee WCC, McKillop AM, Zhang XP. Controlling Enantioselectivity and Diastereoselectivity in Radical Cascade Cyclization for Construction of Bicyclic Structures. J Am Chem Soc 2021; 143:11130-11140. [PMID: 34260202 PMCID: PMC8399859 DOI: 10.1021/jacs.1c04719] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Radical cascade cyclization reactions are highly attractive synthetic tools for the construction of polycyclic molecules in organic synthesis. While it has been successfully implemented in diastereoselective synthesis of natural products and other complex compounds, radical cascade cyclization faces a major challenge of controlling enantioselectivity. As the first application of metalloradical catalysis (MRC) for controlling enantioselectivity as well as diastereoselectivity in radical cascade cyclization, we herein report the development of a Co(II)-based catalytic system for asymmetric radical bicyclization of 1,6-enynes with diazo compounds. Through the fine-tuning of D2-symmetric chiral amidoporphyrins as the supporting ligands, the Co(II)-catalyzed radical cascade process, which proceeds in a single operation under mild conditions, enables asymmetric construction of multisubstituted cyclopropane-fused tetrahydrofurans bearing three contiguous stereogenic centers, including two all-carbon quaternary centers, in high yields with excellent stereoselectivities. Combined computational and experimental studies have shed light on the underlying stepwise radical mechanism for this new Co(II)-based cascade bicyclization that involves the relay of several Co-supported C-centered radical intermediates, including α-, β-, γ-, and ε-metalloalkyl radicals. The resulting enantioenriched cyclopropane-fused tetrahydrofurans that contain a trisubstituted vinyl group at the bridgehead, as showcased in several stereospecific transformations, may serve as useful intermediates for stereoselective organic synthesis. The successful demonstration of this new asymmetric radical process via Co(II)-MRC points out a potentially general approach for controlling enantioselectivity as well as diastereoselectivity in synthetically attractive radical cascade reactions.
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Affiliation(s)
- Congzhe Zhang
- Department of Chemistry, Merkert Chemistry Center, Boston College, Chestnut Hill, Massachusetts 02467, United States
| | - Duo-Sheng Wang
- Department of Chemistry, Merkert Chemistry Center, Boston College, Chestnut Hill, Massachusetts 02467, United States
| | - Wan-Chen Cindy Lee
- Department of Chemistry, Merkert Chemistry Center, Boston College, Chestnut Hill, Massachusetts 02467, United States
| | - Alexander M McKillop
- Department of Chemistry, Merkert Chemistry Center, Boston College, Chestnut Hill, Massachusetts 02467, United States
| | - X Peter Zhang
- Department of Chemistry, Merkert Chemistry Center, Boston College, Chestnut Hill, Massachusetts 02467, United States
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4
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Song L, Tian X, Han C, Amanpur M, Rominger F, Hashmi ASK. Catalyst-free synthesis of oxazol-2(3 H)-ones from sulfilimines and diazo compounds through a tandem rearrangement/aziridination/ring-expansion reaction. Org Chem Front 2021. [DOI: 10.1039/d1qo00473e] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
Oxazol-2(3H)-ones play a significant role in the fields of organic synthesis and drug development.
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Affiliation(s)
- Lina Song
- Institute of Organic Chemistry
- Heidelberg University
- 69120 Heidelberg
- Germany
| | - Xianhai Tian
- Institute of Organic Chemistry
- Heidelberg University
- 69120 Heidelberg
- Germany
| | - Chunyu Han
- Institute of Organic Chemistry
- Heidelberg University
- 69120 Heidelberg
- Germany
| | - Mehran Amanpur
- Institute of Organic Chemistry
- Heidelberg University
- 69120 Heidelberg
- Germany
| | - Frank Rominger
- Institute of Organic Chemistry
- Heidelberg University
- 69120 Heidelberg
- Germany
| | - A. Stephen K. Hashmi
- Institute of Organic Chemistry
- Heidelberg University
- 69120 Heidelberg
- Germany
- Chemistry Department
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5
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Abstract
Three- and four-membered rings, widespread motifs in nature and medicinal chemistry, have fascinated chemists ever since their discovery. However, due to energetic considerations, small rings are often difficult to assemble. In this regard, homogeneous gold catalysis has emerged as a powerful tool to construct these highly strained carbocycles. This review aims to provide a comprehensive summary of all the major advances and discoveries made in the gold-catalyzed synthesis of cyclopropanes, cyclopropenes, cyclobutanes, cyclobutenes, and their corresponding heterocyclic or heterosubstituted analogs.
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Affiliation(s)
- Mauro Mato
- Institute of Chemical Research of Catalonia (ICIQ), Barcelona Institute of Science and Technology, Av. Països Catalans 16, 43007 Tarragona, Spain.,Departament de Quı́mica Analı́tica i Quı́mica Orgànica, Universitat Rovira i Virgili, C/Marcel·li Domingo s/n, 43007 Tarragona, Spain
| | - Allegra Franchino
- Institute of Chemical Research of Catalonia (ICIQ), Barcelona Institute of Science and Technology, Av. Països Catalans 16, 43007 Tarragona, Spain.,Departament de Quı́mica Analı́tica i Quı́mica Orgànica, Universitat Rovira i Virgili, C/Marcel·li Domingo s/n, 43007 Tarragona, Spain
| | - Cristina Garcı A-Morales
- Institute of Chemical Research of Catalonia (ICIQ), Barcelona Institute of Science and Technology, Av. Països Catalans 16, 43007 Tarragona, Spain.,Departament de Quı́mica Analı́tica i Quı́mica Orgànica, Universitat Rovira i Virgili, C/Marcel·li Domingo s/n, 43007 Tarragona, Spain
| | - Antonio M Echavarren
- Institute of Chemical Research of Catalonia (ICIQ), Barcelona Institute of Science and Technology, Av. Països Catalans 16, 43007 Tarragona, Spain.,Departament de Quı́mica Analı́tica i Quı́mica Orgànica, Universitat Rovira i Virgili, C/Marcel·li Domingo s/n, 43007 Tarragona, Spain
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6
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Sinka V, Martín VS, Cruz DA, Padrón JI. Synthesis of Seven Membered Oxacycles: Recent Developments and New Approaches. European J Org Chem 2020. [DOI: 10.1002/ejoc.202000850] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Victoria Sinka
- Molecular Sciences Department Instituto de Productos Naturales y Agrobiología Consejo Superior de Investigaciones Científicas (IPNA‐CSIC) Avda. Astrofísico Francisco Sánchez 3 38206 La Laguna Tenerife, Islas Canarias Spain
| | - Víctor S. Martín
- Instituto Universitario de Bio‐Orgánica “Antonio González” “Síntesis Orgánica Sostenible Unidad Asociada al CSIC”, Departamento de Química Orgánica Universidad de La Laguna C/ Francisco Sánchez 2 38206 La Laguna Tenerife, Islas Canarias Spain
| | - Daniel A. Cruz
- Instituto Universitario de Bio‐Orgánica “Antonio González” “Síntesis Orgánica Sostenible Unidad Asociada al CSIC”, Departamento de Química Orgánica Universidad de La Laguna C/ Francisco Sánchez 2 38206 La Laguna Tenerife, Islas Canarias Spain
| | - Juan I. Padrón
- Molecular Sciences Department Instituto de Productos Naturales y Agrobiología Consejo Superior de Investigaciones Científicas (IPNA‐CSIC) Avda. Astrofísico Francisco Sánchez 3 38206 La Laguna Tenerife, Islas Canarias Spain
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7
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Gan L, Wei L, Wan J. Catalyst‐Free Synthesis of α‐Diazoketones in Water by Microwave Promoted Enaminone C=C Double Bond Cleavage. ChemistrySelect 2020. [DOI: 10.1002/slct.202002247] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Lu Gan
- College of Chemistry and Chemical EngineeringJiangxi Normal University Nanchang 330022 P. R. China
- School of ScienceNanchang Institute of Technology Nanchang 330029 P. R. China
| | - Li Wei
- College of Chemistry and Chemical EngineeringJiangxi Normal University Nanchang 330022 P. R. China
| | - Jie‐Ping Wan
- College of Chemistry and Chemical EngineeringJiangxi Normal University Nanchang 330022 P. R. China
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8
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Wübbolt S, Cheong CB, Frost JR, Christensen KE, Donohoe TJ. A Vinyl Cyclopropane Ring Expansion and Iridium-Catalyzed Hydrogen Borrowing Cascade. Angew Chem Int Ed Engl 2020; 59:11339-11344. [PMID: 32314851 PMCID: PMC7463175 DOI: 10.1002/anie.202003614] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2020] [Revised: 03/31/2020] [Indexed: 12/18/2022]
Abstract
A vinyl cyclopropane rearrangement embedded in an iridium-catalyzed hydrogen borrowing reaction enabled the formation of substituted stereo-defined cyclopentanes from Ph* methyl ketone and cyclopropyl alcohols. Mechanistic studies provide evidence for the ring-expansion reaction being the result of a cascade based on oxidation of the cyclopropyl alcohols, followed by aldol condensation with the pentamethyl phenyl-substituted ketone to form an enone containing the vinyl cyclopropane. Subsequent single electron transfer (SET) to this system initiates a rearrangement, and the catalytic cycle is completed by reduction of the new enone. This process allows for the efficient formation of diversely substituted cyclopentanes as well as the construction of complex bicyclic carbon skeletons containing up to four contiguous stereocentres, all with high diastereoselectivity.
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Affiliation(s)
- Simon Wübbolt
- Chemistry Research LaboratoryUniversity of OxfordOxfordOX1 3TAUK
| | | | - James R. Frost
- Chemistry Research LaboratoryUniversity of OxfordOxfordOX1 3TAUK
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9
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Wang YJ, Li XX, Chen Z. Gold-Catalyzed Diastereoselective Formal Intermolecular [4 + 2 + 1] Cycloaddition of 1,3-Dien-8-yne with Diazo Ester. J Org Chem 2020; 85:7694-7703. [DOI: 10.1021/acs.joc.0c00146] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Yu-Jiang Wang
- Department of Chemistry, Renmin University of China, Beijing 100872, China
| | - Xiao-Xiao Li
- College of Chemistry & Environment Protection Engineering, Southwest Minzu University, Chengdu 610041, China
| | - Zili Chen
- Department of Chemistry, Renmin University of China, Beijing 100872, China
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10
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Wübbolt S, Cheong CB, Frost JR, Christensen KE, Donohoe TJ. A Vinyl Cyclopropane Ring Expansion and Iridium‐Catalyzed Hydrogen Borrowing Cascade. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202003614] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Affiliation(s)
- Simon Wübbolt
- Chemistry Research Laboratory University of Oxford Oxford OX1 3TA UK
| | - Choon Boon Cheong
- Chemistry Research Laboratory University of Oxford Oxford OX1 3TA UK
| | - James R. Frost
- Chemistry Research Laboratory University of Oxford Oxford OX1 3TA UK
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11
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Nogues C, Argouarch G. Synthesis of dialkoxydiphenylsilanes via the rhodium-catalyzed hydrosilylation of aldehydes. Tetrahedron Lett 2019. [DOI: 10.1016/j.tetlet.2019.151101] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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12
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López-Rodríguez A, Domínguez G, Pérez-Castells J. Ruthenium Catalyzed Rearrangement of Ene-cyclopropenes. Divergent Reaction Pathways. J Org Chem 2019; 84:924-933. [PMID: 30588814 DOI: 10.1021/acs.joc.8b02849] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The reaction of ene-cyclopropenes with Cp*RuCl(cod) leads to alkenyl bicyclo[3.1.0]hexanes, bicyclo[4.1.0]heptanes, and bicyclo[5.1.0]octanes. This reaction involves a reverse regioselectivity in the cyclopropene opening than with gold chlorides. With gem-disubstituted cyclopropenes, a novel cycloisomerization based on ring-opening nucleophilic attack and rearrangement is observed. Alternatively, some gem-disubstituted cyclopropenes give dimerizations of the intermediate carbene.
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Affiliation(s)
- Alberto López-Rodríguez
- Facultad de Farmacia, Dpto. Química y Bioquímica , Universidad San Pablo CEU , Urb. Montepríncipe, Boadilla del Monte , 28668 Madrid , Spain
| | - Gema Domínguez
- Facultad de Farmacia, Dpto. Química y Bioquímica , Universidad San Pablo CEU , Urb. Montepríncipe, Boadilla del Monte , 28668 Madrid , Spain
| | - Javier Pérez-Castells
- Facultad de Farmacia, Dpto. Química y Bioquímica , Universidad San Pablo CEU , Urb. Montepríncipe, Boadilla del Monte , 28668 Madrid , Spain
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13
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Taydakov IV, Kreshchenova YM, Dolotova EP. A convenient and practical synthesis of β-diketones bearing linear perfluorinated alkyl groups and a 2-thienyl moiety. Beilstein J Org Chem 2018; 14:3106-3111. [PMID: 30643588 PMCID: PMC6317410 DOI: 10.3762/bjoc.14.290] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2018] [Accepted: 12/12/2018] [Indexed: 12/22/2022] Open
Abstract
A versatile and robust synthetic protocol for the preparation of β-diketones bearing 2-thienyl and perfluorinated alkyl radicals of different length or a methyl group was developed. This protocol is suitable for the preparation of multigram quantities of diketones without cumbersome purification procedures. Moreover, the known method for purification of diketones via copper chelates was improved considerably.
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Affiliation(s)
- Ilya V Taydakov
- P.N. Lebedev Physical Institute of the Russian Academy of Sciences, Leninskiy prospect, 53, 119991 Moscow, Russian Federation.,Moscow Institute of Physics and Technology (State University). Institutskiy per., 9, 141701, Dolgoprudny, Moscow Region, Russian Federation
| | - Yuliya M Kreshchenova
- D. Mendeleev University of Chemical Technology of Russia, Miusskaya sq. 9, 125047 Moscow, Russian Federation
| | - Ekaterina P Dolotova
- P.N. Lebedev Physical Institute of the Russian Academy of Sciences, Leninskiy prospect, 53, 119991 Moscow, Russian Federation.,D. Mendeleev University of Chemical Technology of Russia, Miusskaya sq. 9, 125047 Moscow, Russian Federation
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14
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Herndon JW. The chemistry of the carbon-transition metal double and triple bond: Annual survey covering the year 2017. Coord Chem Rev 2018. [DOI: 10.1016/j.ccr.2018.08.007] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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15
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Yao X, Wang T, Zhang Z. Gold(I)-Catalyzed Dimerization of 3-Diazooxindoles towards Isoindigos. European J Org Chem 2018. [DOI: 10.1002/ejoc.201800809] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Xinbo Yao
- Key Laboratory of Applied Surface and Colloid Chemistry; Ministry of Education; School of Chemistry and Chemical Engineering; Shaanxi Normal University; No.620 West Chang'an Avenue 710119 Xi'an China
| | - Tao Wang
- Key Laboratory of Applied Surface and Colloid Chemistry; Ministry of Education; School of Chemistry and Chemical Engineering; Shaanxi Normal University; No.620 West Chang'an Avenue 710119 Xi'an China
| | - Zunting Zhang
- Key Laboratory of Applied Surface and Colloid Chemistry; Ministry of Education; School of Chemistry and Chemical Engineering; Shaanxi Normal University; No.620 West Chang'an Avenue 710119 Xi'an China
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