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Roglans A, Pla-Quintana A, Solà M. Mechanistic Studies of Transition-Metal-Catalyzed [2 + 2 + 2] Cycloaddition Reactions. Chem Rev 2020; 121:1894-1979. [DOI: 10.1021/acs.chemrev.0c00062] [Citation(s) in RCA: 66] [Impact Index Per Article: 16.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
- Anna Roglans
- Institut de Quı́mica Computacional i Catàlisi (IQCC) and Departament de Quı́mica, Universitat de Girona, C/Maria Aurèlia Capmany, 69, E-17003, Girona, Catalonia, Spain
| | - Anna Pla-Quintana
- Institut de Quı́mica Computacional i Catàlisi (IQCC) and Departament de Quı́mica, Universitat de Girona, C/Maria Aurèlia Capmany, 69, E-17003, Girona, Catalonia, Spain
| | - Miquel Solà
- Institut de Quı́mica Computacional i Catàlisi (IQCC) and Departament de Quı́mica, Universitat de Girona, C/Maria Aurèlia Capmany, 69, E-17003, Girona, Catalonia, Spain
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2
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Torres Ò, Fernàndez M, Díaz-Jiménez À, Pla-Quintana A, Roglans A, Solà M. Examining the Factors That Govern the Regioselectivity in Rhodium-Catalyzed Alkyne Cyclotrimerization. Organometallics 2019. [DOI: 10.1021/acs.organomet.9b00347] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Òscar Torres
- Institut de Química Computacional i Catàlisi (IQCC) and Departament de Química, Universitat de Girona, C/Maria Aurèlia Capmany, 69, E-17003 Girona, Catalonia, Spain
| | - Martí Fernàndez
- Institut de Química Computacional i Catàlisi (IQCC) and Departament de Química, Universitat de Girona, C/Maria Aurèlia Capmany, 69, E-17003 Girona, Catalonia, Spain
| | - Àlex Díaz-Jiménez
- Institut de Química Computacional i Catàlisi (IQCC) and Departament de Química, Universitat de Girona, C/Maria Aurèlia Capmany, 69, E-17003 Girona, Catalonia, Spain
| | - Anna Pla-Quintana
- Institut de Química Computacional i Catàlisi (IQCC) and Departament de Química, Universitat de Girona, C/Maria Aurèlia Capmany, 69, E-17003 Girona, Catalonia, Spain
| | - Anna Roglans
- Institut de Química Computacional i Catàlisi (IQCC) and Departament de Química, Universitat de Girona, C/Maria Aurèlia Capmany, 69, E-17003 Girona, Catalonia, Spain
| | - Miquel Solà
- Institut de Química Computacional i Catàlisi (IQCC) and Departament de Química, Universitat de Girona, C/Maria Aurèlia Capmany, 69, E-17003 Girona, Catalonia, Spain
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Weber SM, Hilt G. Chemoselective Cobalt(I)-Catalyzed Cyclotrimerization of (Un)Symmetrical 1,3-Butadiynes for the Synthesis of 1,2,4-Regioisomers. Org Lett 2019; 21:4106-4110. [DOI: 10.1021/acs.orglett.9b01281] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Sebastian M. Weber
- Fachbereich Chemie Philipps Universität Marburg, Hans-Meerwein Strasse 4, D-35032 Marburg, Germany
- Institut für Chemie, Universität Oldenburg, Carl-von-Ossietzky-Strasse 9-11, D-26111 Oldenburg, Germany
| | - Gerhard Hilt
- Fachbereich Chemie Philipps Universität Marburg, Hans-Meerwein Strasse 4, D-35032 Marburg, Germany
- Institut für Chemie, Universität Oldenburg, Carl-von-Ossietzky-Strasse 9-11, D-26111 Oldenburg, Germany
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4
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Yan X, Xi C. Advances in transmetalation reactions originated from organozirconium compounds. Coord Chem Rev 2017. [DOI: 10.1016/j.ccr.2017.07.005] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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5
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Kaiser RP, Hessler F, Mosinger J, Císařová I, Kotora M. A [2+2+2]-Cyclotrimerization Approach to Selectively Substituted Fluorenes and Fluorenols, and Their Conversion to 9,9′-Spirobifluorenes. Chemistry 2015; 21:13577-82. [DOI: 10.1002/chem.201502370] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2015] [Indexed: 11/09/2022]
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6
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Kleinschmidt S, Schallenberg D, Helmdach K, Hinz A, Villinger A, Seidel WW. Spontaneous Formation of an η4-Ethylene Bis(carbene) Ligand by Alkyne Coupling at Rhenium(III). Organometallics 2015. [DOI: 10.1021/acs.organomet.5b00030] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Steffen Kleinschmidt
- Institut für Chemie, Universität Rostock, Albert-Einstein-Straße 3a, 18059 Rostock, Germany
| | - David Schallenberg
- Institut für Chemie, Universität Rostock, Albert-Einstein-Straße 3a, 18059 Rostock, Germany
| | - Kai Helmdach
- Institut für Chemie, Universität Rostock, Albert-Einstein-Straße 3a, 18059 Rostock, Germany
| | - Alexander Hinz
- Institut für Chemie, Universität Rostock, Albert-Einstein-Straße 3a, 18059 Rostock, Germany
| | - Alexander Villinger
- Institut für Chemie, Universität Rostock, Albert-Einstein-Straße 3a, 18059 Rostock, Germany
| | - Wolfram W. Seidel
- Institut für Chemie, Universität Rostock, Albert-Einstein-Straße 3a, 18059 Rostock, Germany
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Casitas A, Krause H, Goddard R, Fürstner A. Elementary Steps of Iron Catalysis: Exploring the Links between Iron Alkyl and Iron Olefin Complexes for their Relevance in CH Activation and CC Bond Formation. Angew Chem Int Ed Engl 2014; 54:1521-6. [DOI: 10.1002/anie.201410069] [Citation(s) in RCA: 56] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2014] [Indexed: 11/05/2022]
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8
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Casitas A, Krause H, Goddard R, Fürstner A. Elementary Steps of Iron Catalysis: Exploring the Links between Iron Alkyl and Iron Olefin Complexes for their Relevance in CH Activation and CC Bond Formation. Angew Chem Int Ed Engl 2014. [DOI: 10.1002/ange.201410069] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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9
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Oonishi Y, Saito A, Sato Y. Rhodium(I)-Catalyzed Intermolecular [2+2+2] Cycloaddition of Allenyl Aldehydes with Alkynes and Related Cyclization. ASIAN J ORG CHEM 2014. [DOI: 10.1002/ajoc.201402239] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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10
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Hashimoto T, Okabe A, Mizuno T, Izawa M, Takeuchi R. Iridium-catalyzed [2+2+2] cycloaddition of α,ω-diynes with alkynyl ketones and alkynyl esters. Tetrahedron 2014. [DOI: 10.1016/j.tet.2014.09.038] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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11
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Cycloaddition of 1,3-butadiynes: efficient synthesis of carbo- and heterocycles. Molecules 2014; 19:13788-802. [PMID: 25191872 PMCID: PMC6271912 DOI: 10.3390/molecules190913788] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2014] [Revised: 08/26/2014] [Accepted: 08/29/2014] [Indexed: 11/17/2022] Open
Abstract
Cycloaddition reactions of alkynes are elegant, atom-efficient transformations for the synthesis of carbo- and heterocycles, mostly aromatic, involving the construction of challenging skeletons of complex molecules. Therefore significant efforts have recently been devoted to the development of novel methodologies, efficient strategies and different catalytic systems to broaden the scope of these reactions. We summarize in this review the recent advances in the cycloaddition reactions of 1,3-butadiynes to provide facile and reliable approaches to various functionalized carbo- and heterocycles.
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Fernández M, Ferré M, Pla-Quintana A, Parella T, Pleixats R, Roglans A. Rhodium-NHC Hybrid Silica Materials as Recyclable Catalysts for [2+2+2] Cycloaddition Reactions of Alkynes. European J Org Chem 2014. [DOI: 10.1002/ejoc.201402649] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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13
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Ishii M, Mori F, Tanaka K. Rhodium-Catalyzed [2+2+2] Cycloaddition of Diynes with Carbodiimides and Carbon Dioxide under Ambient Conditions. Chemistry 2014; 20:2169-74. [DOI: 10.1002/chem.201304623] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2013] [Revised: 12/03/2013] [Indexed: 11/09/2022]
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14
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15
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Zhang L, Li Y, Zhang L, Wu Y. Vicinal bis(trifluoroacetimidoyl chloride)s: novel building blocks for the synthesis of benzo-fused eight-membered rings via [2 + 2 + 2] cycloadditions. Org Biomol Chem 2014; 12:1040-3. [DOI: 10.1039/c3ob42224k] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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16
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Geng W, Wei J, Zhang WX, Xi Z. Isolable and Well-Defined Butadienyl Organocopper(I) Aggregates: Facile Synthesis, Structural Characterization, and Reaction Chemistry. J Am Chem Soc 2013; 136:610-3. [DOI: 10.1021/ja4114243] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Affiliation(s)
- Weizhi Geng
- Beijing
National Laboratory for Molecular Sciences (BNLMS), and Key Laboratory
of Bioorganic Chemistry and Molecular Engineering of Ministry of Education,
College of Chemistry, Peking University, Beijing 100871, China
| | - Junnian Wei
- Beijing
National Laboratory for Molecular Sciences (BNLMS), and Key Laboratory
of Bioorganic Chemistry and Molecular Engineering of Ministry of Education,
College of Chemistry, Peking University, Beijing 100871, China
| | - Wen-Xiong Zhang
- Beijing
National Laboratory for Molecular Sciences (BNLMS), and Key Laboratory
of Bioorganic Chemistry and Molecular Engineering of Ministry of Education,
College of Chemistry, Peking University, Beijing 100871, China
| | - Zhenfeng Xi
- Beijing
National Laboratory for Molecular Sciences (BNLMS), and Key Laboratory
of Bioorganic Chemistry and Molecular Engineering of Ministry of Education,
College of Chemistry, Peking University, Beijing 100871, China
- State
Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry (SIOC), Shanghai 200032, China
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Matsuura M, Fujihara T, Kakeya M, Sugaya T, Nagasawa A. Dinuclear niobium(III) and tantalum(III) complexes with thioether and selenoether ligands [{MIIIX2(L)}2(μ-X)2(μ-L)] (M = Nb, Ta; X = Cl, Br; L = R2S, R2Se): Syntheses, structures, and the optimal conditions and the mechanism of the catalysis for regioselective cyclotrimerization of alkynes. J Organomet Chem 2013. [DOI: 10.1016/j.jorganchem.2013.07.035] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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18
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Foster RW, Tame CJ, Hailes HC, Sheppard TD. Highly Regioselective Synthesis of Substituted Isoindolinones via Ruthenium-Catalyzed Alkyne Cyclotrimerizations. Adv Synth Catal 2013; 355:2353-2360. [PMID: 24124414 PMCID: PMC3793232 DOI: 10.1002/adsc.201300055] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2013] [Revised: 05/23/2013] [Indexed: 11/08/2022]
Abstract
(Cyclooctadiene)(pentamethylcyclopentadiene)ruthenium chloride [Cp*RuCl(cod)] has been used to catalyze the regioselective cyclization of amide-tethered diynes with monosubstituted alkynes to give polysubstituted isoindolinones. Notably, the presence of a trimethylsilyl group on the diyne generally led to complete control over the regioselectivity of the alkyne cyclotrimerization. The cyclization reaction worked well in a sustainable non-chlorinated solvent and was tolerant of moisture. The optimized conditions were effective with a diverse range of alkynes and diynes. The 7-silylisoindolinone products could be halogenated, protodesilylated or ring opened to access a range of usefully functionalized products.
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Affiliation(s)
- Robert W Foster
- Department of Chemistry, University College London, Christopher Ingold LaboratoriesLondon, WC1H 0AJ, U.K. Fax: (+44)-(0)20-7679-7463; phone: (+44)-(0)20-7679-2467
| | - Christopher J Tame
- GlaxoSmithKline, Medicines Research CentreGunnels Wood Road, Stevenage, Hertfordshire, SG1 2NY, U.K.
| | - Helen C Hailes
- Department of Chemistry, University College London, Christopher Ingold LaboratoriesLondon, WC1H 0AJ, U.K. Fax: (+44)-(0)20-7679-7463; phone: (+44)-(0)20-7679-2467
| | - Tom D Sheppard
- Department of Chemistry, University College London, Christopher Ingold LaboratoriesLondon, WC1H 0AJ, U.K. Fax: (+44)-(0)20-7679-7463; phone: (+44)-(0)20-7679-2467
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19
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20
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Monillas WH, Young JF, Yap GPA, Theopold KH. A well-defined model system for the chromium-catalyzed selective oligomerization of ethylene. Dalton Trans 2013; 42:9198-210. [PMID: 23493916 DOI: 10.1039/c3dt00109a] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Affiliation(s)
- Wesley H Monillas
- Department of Chemistry and Biochemistry, Center for Catalytic Science and Technology, University of Delaware, Newark, Delaware 19716, USA
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Wei J, Wang Z, Zhang WX, Xi Z. Construction of Octaalkyl-Substituted and Decasubstituted all-cis-Octatetraenes via Linear Dimerization of 1,4-Dicopper-1,3-butadienes and Subsequent Cross-Coupling with Halides. Org Lett 2013; 15:1222-5. [DOI: 10.1021/ol400140n] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Junnian Wei
- Beijing National Laboratory of Molecular Sciences (BNLMS) and Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, College of Chemistry, Peking University, Beijing 100871, China, and State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, CAS, Shanghai 200032, China
| | - Zitao Wang
- Beijing National Laboratory of Molecular Sciences (BNLMS) and Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, College of Chemistry, Peking University, Beijing 100871, China, and State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, CAS, Shanghai 200032, China
| | - Wen-Xiong Zhang
- Beijing National Laboratory of Molecular Sciences (BNLMS) and Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, College of Chemistry, Peking University, Beijing 100871, China, and State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, CAS, Shanghai 200032, China
| | - Zhenfeng Xi
- Beijing National Laboratory of Molecular Sciences (BNLMS) and Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, College of Chemistry, Peking University, Beijing 100871, China, and State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, CAS, Shanghai 200032, China
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Thiel I, Jiao H, Spannenberg A, Hapke M. Fine-tuning the reactivity and stability by systematic ligand variations in CpCo(I) complexes as catalysts for [2+2+2] cycloaddition reactions. Chemistry 2012; 19:2548-54. [PMID: 23255505 DOI: 10.1002/chem.201202946] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2012] [Indexed: 11/08/2022]
Abstract
CpCo(I)-olefin-phosphite and CpCo(I)-bisphosphite complexes were systematically prepared and their reactivity in [2+2+2] cycloaddition reactions compared with highly active [CpCo(H(2)C=CHSiMe(3))(2)] (1). Whereas 1 is an excellent precursor for the synthesis of [CpCo(olefin)(phosphite)] complexes (2 a-f), [CpCo(phosphite)(2)] complexes (3 a-e) were prepared photochemically from [CpCo(cod)]. The complexes were evaluated in the cyclotrimerization reaction of diynes with nitriles yielding pyridines. For [CpCo(olefin)(phosphite)], as well as some of the [CpCo(phosphite)(2)] complexes, reaction temperatures as low as 50 °C were sufficient to perform the cycloaddition reaction. A direct comparison showed that the order of reactivity for the complex ligands was olefin(2)>olefin/phosphite>phosphites(2). The complexes with mixed ligands favorably combine reactivity and stability. Calculations on the ligand dissociation from [CpCo(olefin)(phosphite)] proved that the phosphite is dissociating before the olefin. [CpCo(H(2)C=CHSiMe(3)){P(OPh)(3)}] (2 a) was investigated for the co-cyclization of diynes and nitriles and found to be an efficient catalyst at rather mild temperatures.
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Affiliation(s)
- Indre Thiel
- Leibniz-Institut für Katalyse e.V. an der Universität Rostock, Albert-Einstein-Strasse 29a, 18059 Rostock, Germany
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Fischer F, Jungk P, Weding N, Spannenberg A, Ott H, Hapke M. Diastereomeric Atropisomers from a Chiral Diyne by Cobalt(I)-Catalyzed Cyclotrimerization. European J Org Chem 2012. [DOI: 10.1002/ejoc.201200402] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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24
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Tanaka K. Rhodium-Catalyzed [2+2+2] Cycloaddition for the Synthesis of Substituted Pyridines, Pyridones, and Thiopyranimines. HETEROCYCLES 2012. [DOI: 10.3987/rev-12-729] [Citation(s) in RCA: 111] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Tanaka K, Noguchi K. DESIGN AND SYNTHESIS OF A C2-SYMMETRIC CHIRAl 1,2-BIS(DIPHENYLPHOSPHINO)BENZENE LIGAND VIA RHODIUM-CATALYZED INTRAMOLECULAR [2+2+2] CYCLOADDITION. HETEROCYCLES 2012. [DOI: 10.3987/com-12-s(n)30] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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26
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Takahashi T, Jia Z, Li S, Nakajima K, Kanno KI, Song Z. Application of Zirconacyclopentadienes (Metalla-heterocycles) and Cross-Coupling for the Convenient Preparative Method of 6,13-Disubstituted Pentacene. HETEROCYCLES 2012. [DOI: 10.3987/com-12-s(n)130] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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27
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Weding N, Jackstell R, Jiao H, Spannenberg A, Hapke M. Synthesis of Group 9 Metal-Olefin Complexes with Identical Ligand Frameworks and Comparison of their Catalytic Activity in [2+2+2] Cycloaddition and other Addition Reactions. Adv Synth Catal 2011. [DOI: 10.1002/adsc.201100489] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Miyauchi Y, Kobayashi M, Tanaka K. Rhodium-Catalyzed Intermolecular [2+2+2] Cross-Trimerization of Aryl Ethynyl Ethers and Carbonyl Compounds To Produce Dienyl Esters. Angew Chem Int Ed Engl 2011; 50:10922-6. [DOI: 10.1002/anie.201105519] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2011] [Indexed: 11/09/2022]
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Miyauchi Y, Kobayashi M, Tanaka K. Rhodium-Catalyzed Intermolecular [2+2+2] Cross-Trimerization of Aryl Ethynyl Ethers and Carbonyl Compounds To Produce Dienyl Esters. Angew Chem Int Ed Engl 2011. [DOI: 10.1002/ange.201105519] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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30
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Dushing MP, Ramana C. Target cum flexibility: synthesis of C(3′)-spiroannulated nucleosides. Tetrahedron Lett 2011. [DOI: 10.1016/j.tetlet.2011.06.100] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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31
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Kawatsura M, Yamamoto M, Namioka J, Kajita K, Hirakawa T, Itoh T. Ruthenium-catalyzed regioselective [2 + 2 + 2] cyclotrimerization of trifluoromethyl group substituted internal alkynes. Org Lett 2011; 13:1001-3. [PMID: 21288010 DOI: 10.1021/ol1030734] [Citation(s) in RCA: 56] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
It found that the Ru(3)(CO)(12) coordinated with 2-(diphenylphosphino)benzonitrile (2-DPPBN) to effectively catalyze the [2 + 2 + 2] cyclotrimerization of the trifluoromethyl group substituted internal alkynes in high yields with up to >98% regioselectivity. Isolation of a ruthenacyclopentadiene was successful and confirmed that the complex is a reaction intermediate.
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Affiliation(s)
- Motoi Kawatsura
- Department of Chemistry and Biotechnology, Graduate School of Engineering, Tottori University, Koyama, Tottori, Japan.
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Target cum flexibility: an alkyne [2+2+2]-cyclotrimerization strategy for synthesis of trinem library. Tetrahedron Lett 2011. [DOI: 10.1016/j.tetlet.2010.10.123] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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33
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Zheng W, Wu Y, Zheng F, Hu L, Hong Y. Selective synthesis of α-methylenyl zirconacyclopentene via cross-coupling of alkyne and allene. Tetrahedron Lett 2010. [DOI: 10.1016/j.tetlet.2010.06.134] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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