1
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Ning C, Yu Z, Shi M, Wei Y. Palladium-catalyzed selective C-C bond cleavage of keto-vinylidenecyclopropanes: construction of structurally rich dihydrofurans and tetrahydrofurans. Chem Sci 2024; 15:9192-9200. [PMID: 38903235 PMCID: PMC11186342 DOI: 10.1039/d4sc02536a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2024] [Accepted: 05/14/2024] [Indexed: 06/22/2024] Open
Abstract
Palladium-catalyzed selective cleavage of the distal C-C bond and proximal C-C bond of keto-vinylidenecyclopropanes by altering the sterically bulky phosphine ligands has been realized. The proximal C-C bond cleavage can be achieved by using dtbpf as a phosphine ligand, affording bicyclic products containing dihydrofuran skeletons in good yields along with broad substrate scope. In proximal C-C bond cleavage reactions, the eight-membered cyclic palladium intermediate plays a key role in the reaction. The [3 + 2] cycloaddition of keto-vinylidenecyclopropanes through the distal C-C bond cleavage can be effectively accomplished with t BuXPhos as a phosphine ligand and ZnCl2 as an additive, delivering bicyclic products containing tetrahydrofuran skeletons in good yields. The further transformation of these bicyclic products has been demonstrated, and the reaction mechanisms of two different C-C bond cleavage reactions have been investigated by control experiments and DFT calculations.
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Affiliation(s)
- Chao Ning
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals, Key Laboratory for Advanced Materials and Feringa Nobel Prize Scientist Joint Research Center, School of Chemistry & Molecular Engineering, East China University of Science and Technology Meilong Road No.130 Shanghai 200237 China
| | - Ziqi Yu
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals, Key Laboratory for Advanced Materials and Feringa Nobel Prize Scientist Joint Research Center, School of Chemistry & Molecular Engineering, East China University of Science and Technology Meilong Road No.130 Shanghai 200237 China
| | - Min Shi
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals, Key Laboratory for Advanced Materials and Feringa Nobel Prize Scientist Joint Research Center, School of Chemistry & Molecular Engineering, East China University of Science and Technology Meilong Road No.130 Shanghai 200237 China
- State Key Laboratory of Organometallic Chemistry, Center for Excellence in Molecular Synthesis, University of Chinese Academy of Sciences, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences 345 Lingling Road Shanghai 200032 China
| | - Yin Wei
- State Key Laboratory of Organometallic Chemistry, Center for Excellence in Molecular Synthesis, University of Chinese Academy of Sciences, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences 345 Lingling Road Shanghai 200032 China
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2
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Ning C, Rui KH, Wei Y, Shi M. Rh(i)-catalyzed dimerization of ene-vinylidenecyclopropanes for the construction of spiro[4,5]decanes and mechanistic studies. Chem Sci 2022; 13:7310-7317. [PMID: 35799819 PMCID: PMC9214856 DOI: 10.1039/d1sc06986a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2021] [Accepted: 05/31/2022] [Indexed: 07/22/2023] Open
Abstract
Rh(i) complex catalyzed dimerization of ene-vinylidenecyclopropanes took place smoothly to construct a series of products containing spiro[4,5]decane skeletons featuring a simple operation procedure, mild reaction conditions, and good functional group tolerance. In this paper, the combination of experimental and computational studies reveals a counterion-assisted Rh(i)-Rh(iii)-Rh(v)-Rh(iii)-Rh(i) catalytic cycle involving tandem oxidative cyclometallation/reductive elimination/selective oxidative addition/selective reductive elimination/reductive elimination steps; in addition, a pentavalent spiro-rhodium intermediate is identified as the key intermediate in this dimerization reaction upon DFT calculation.
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Affiliation(s)
- Chao Ning
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals, Key Laboratory for Advanced Materials, Feringa Nobel Prize Scientist Joint Research Center, School of Chemistry & Molecular Engineering, East China University of Science and Technology Meilong Road No. 130 Shanghai 200237 China
| | - Kang-Hua Rui
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals, Key Laboratory for Advanced Materials, Feringa Nobel Prize Scientist Joint Research Center, School of Chemistry & Molecular Engineering, East China University of Science and Technology Meilong Road No. 130 Shanghai 200237 China
| | - Yin Wei
- State Key Laboratory of Organometallic Chemistry, Center for Excellence in Molecular Synthesis, University of Chinese Academy of Sciences, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences 345 Lingling Road Shanghai 200032 China
| | - Min Shi
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals, Key Laboratory for Advanced Materials, Feringa Nobel Prize Scientist Joint Research Center, School of Chemistry & Molecular Engineering, East China University of Science and Technology Meilong Road No. 130 Shanghai 200237 China
- State Key Laboratory of Organometallic Chemistry, Center for Excellence in Molecular Synthesis, University of Chinese Academy of Sciences, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences 345 Lingling Road Shanghai 200032 China
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3
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Ohta S, Miura N, Saitoh K, Itoh K, Satoh S, Miyamoto R, Okazaki M. Synthesis and Structures of Bis(indolyl)-Coordinated Titanium Dichlorido Complexes and Their Catalytic Application in the Cyclotrimerization of Alkynes. Organometallics 2021. [DOI: 10.1021/acs.organomet.1c00292] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Affiliation(s)
- Shun Ohta
- Department of Frontier Materials Chemistry, Graduate School of Science and Technology, Hirosaki University, Hirosaki 036-8561, Japan
| | - Narumi Miura
- Department of Frontier Materials Chemistry, Graduate School of Science and Technology, Hirosaki University, Hirosaki 036-8561, Japan
| | - Keiichiro Saitoh
- Department of Frontier Materials Chemistry, Graduate School of Science and Technology, Hirosaki University, Hirosaki 036-8561, Japan
| | - Keigo Itoh
- Department of Frontier Materials Chemistry, Graduate School of Science and Technology, Hirosaki University, Hirosaki 036-8561, Japan
| | - Sora Satoh
- Department of Frontier Materials Chemistry, Graduate School of Science and Technology, Hirosaki University, Hirosaki 036-8561, Japan
| | - Ryo Miyamoto
- Department of Frontier Materials Chemistry, Graduate School of Science and Technology, Hirosaki University, Hirosaki 036-8561, Japan
| | - Masaaki Okazaki
- Department of Frontier Materials Chemistry, Graduate School of Science and Technology, Hirosaki University, Hirosaki 036-8561, Japan
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4
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Kadikova RN, Gabdullin AM, Mozgovoj OS, Ramazanov IR, Dzhemilev UM. NbCl 5-Mg Reagent System in Regio- and Stereoselective Synthesis of (2 Z)-Alkenylamines and (3 Z)-Alkenylols from Substituted 2-Alkynylamines and 3-Alkynylols. Molecules 2021; 26:3722. [PMID: 34207186 PMCID: PMC8234592 DOI: 10.3390/molecules26123722] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2021] [Revised: 06/11/2021] [Accepted: 06/13/2021] [Indexed: 11/16/2022] Open
Abstract
The reduction of N,N-disubstituted 2-alkynylamines and substituted 3-alkynylols using the NbCl5-Mg reagent system affords the corresponding dideuterated (2Z)-alkenylamine and (3Z)-alkenylol derivatives in high yields in a regio- and stereoselective manner through the deuterolysis (or hydrolysis). The reaction of substituted propargylamines and homopropargylic alcohols with the in situ generated low-valent niobium complex (based on the reaction of NbCl5 with magnesium metal) is an efficient tool for the synthesis of allylamines and homoallylic alcohols bearing a 1,2-disubstituted double bond. It was found that the well-known approach for the reduction of alkynes based on the use of the TaCl5-Mg reagent system does not work for 2-alkynylamines and 3-alkynylols. Thus, this article reveals a difference in the behavior of two reagent systems-NbCl5-Mg and TaCl5-Mg, in relation to oxygen- and nitrogen-containing alkynes. A regio- and stereoselective method was developed for the synthesis of nitrogen-containing E-β-chlorovinyl sulfides based on the reaction of 2-alkynylamines with three equivalents of methanesulfonyl chloride in the presence of stoichiometric amounts of niobium(V) chloride and magnesium metal in toluene.
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Affiliation(s)
- Rita N. Kadikova
- Institute of Petrochemistry and Catalysis of Russian Academy of Sciences, 141 Prospekt Oktyabrya, 450075 Ufa, Russia; (A.M.G.); (O.S.M.); (I.R.R.); (U.M.D.)
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5
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Kadikova RN, Ramazanov IR, Gabdullin AM, Mozgovoj OS, Dzhemilev UM. Niobium- and zirconium-catalyzed reactions of substituted 2 alkynylamines with Et 2Zn. RSC Adv 2021; 11:4631-4638. [PMID: 35424400 PMCID: PMC8694551 DOI: 10.1039/d0ra10132j] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2020] [Accepted: 01/13/2021] [Indexed: 01/02/2023] Open
Abstract
The NbCl5-EtMgBr-catalyzed reaction of N,N-disubstituted 2-alkynylamines with Et2Zn followed by hydrolysis or deuterolysis affords (2Z)-alkenylamines (reduction products of alkyne) in high yields. The reaction of N,N-disubstituted 2-alkynylamines with Et2Zn catalyzed by the Cp2ZrCl2-EtMgBr system occurs as 2-zincoethylzincation, resulting, after deuterolysis or iodinolysis, in the regio- and stereoselective formation of the corresponding dideuterated and diiodinated 2-alkenylamine derivatives with a trisubstituted double bond. This study demonstrates the difference between the catalytic effects of NbCl5 and Cp2ZrCl2 on the pathway of reaction of tertiary 2-alkynylamines with Et2Zn in the presence of catalytic amounts of EtMgBr.
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Affiliation(s)
- Rita N Kadikova
- Institute of Petrochemistry and Catalysis of Russian Academy of Sciences 141 Prospekt Oktyabrya Ufa 450075 Russian Federation
| | - Ilfir R Ramazanov
- Institute of Petrochemistry and Catalysis of Russian Academy of Sciences 141 Prospekt Oktyabrya Ufa 450075 Russian Federation
| | - Azat M Gabdullin
- Institute of Petrochemistry and Catalysis of Russian Academy of Sciences 141 Prospekt Oktyabrya Ufa 450075 Russian Federation
| | - Oleg S Mozgovoj
- Institute of Petrochemistry and Catalysis of Russian Academy of Sciences 141 Prospekt Oktyabrya Ufa 450075 Russian Federation
| | - Usein M Dzhemilev
- Institute of Petrochemistry and Catalysis of Russian Academy of Sciences 141 Prospekt Oktyabrya Ufa 450075 Russian Federation
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6
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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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7
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Titanium catalyzed synthesis of amines and N-heterocycles. ADVANCES IN ORGANOMETALLIC CHEMISTRY 2020. [DOI: 10.1016/bs.adomc.2020.04.003] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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8
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Manßen M, Schafer LL. Titanium catalysis for the synthesis of fine chemicals – development and trends. Chem Soc Rev 2020; 49:6947-6994. [DOI: 10.1039/d0cs00229a] [Citation(s) in RCA: 64] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Atlas as a Titan(ium) is holding the earth-abundant chemistry world. Titanium is the second most abundant transition metal, is a key player in important industrial processes (e.g. polyethylene) and shows much promise for diverse applications in the future.
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Affiliation(s)
- Manfred Manßen
- The Department of Chemistry
- The University of British Columbia
- Vancouver
- Canada
| | - Laurel L. Schafer
- The Department of Chemistry
- The University of British Columbia
- Vancouver
- Canada
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9
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Okamoto S, Yamada T, Tanabe YK, Sakai M. Alkyne [2 + 2 + 2] Cyclotrimerization Catalyzed by a Low-Valent Titanium Reagent Derived from CpTiX3 (X = Cl, O-i-Pr), Me3SiCl, and Mg or Zn. Organometallics 2018. [DOI: 10.1021/acs.organomet.8b00678] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Sentaro Okamoto
- Department of Materials and Life Chemistry, Kanagawa University, 3-27-1 Rokkakubashi, Kanagawa-ku, Yokohama 221-8686, Japan
| | - Takeshi Yamada
- Department of Materials and Life Chemistry, Kanagawa University, 3-27-1 Rokkakubashi, Kanagawa-ku, Yokohama 221-8686, Japan
| | - Yu-ki Tanabe
- Department of Materials and Life Chemistry, Kanagawa University, 3-27-1 Rokkakubashi, Kanagawa-ku, Yokohama 221-8686, Japan
| | - Masaki Sakai
- Department of Materials and Life Chemistry, Kanagawa University, 3-27-1 Rokkakubashi, Kanagawa-ku, Yokohama 221-8686, Japan
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10
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Davis-Gilbert ZW, Tonks IA. Titanium redox catalysis: insights and applications of an earth-abundant base metal. Dalton Trans 2018; 46:11522-11528. [PMID: 28795719 DOI: 10.1039/c7dt02319g] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
π-Acid ancillary ligands, reactants, or products can stabilize reactive low valent Ti intermediates through backbonding, and present opportunities for the development of vast new classes of Ti-catalyzed redox reactions with practical applications.
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11
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Watanabe K, Satoh Y, Kamei M, Furukawa H, Fuji M, Obora Y. NbCl5/Zn/PCy3-System-Catalyzed Intramolecular [2 + 2 + 2] Cycloadditions of Diynes and Alkenes To Form Bicyclic Cyclohexadienes. Org Lett 2017; 19:5398-5401. [DOI: 10.1021/acs.orglett.7b02672] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Keisuke Watanabe
- Department of Chemistry and
Materials Engineering, Faculty of Chemistry, Materials and Bioengineering, Kansai University, Suita, Osaka 564-8680, Japan
| | - Yasushi Satoh
- Department of Chemistry and
Materials Engineering, Faculty of Chemistry, Materials and Bioengineering, Kansai University, Suita, Osaka 564-8680, Japan
| | - Motofumi Kamei
- Department of Chemistry and
Materials Engineering, Faculty of Chemistry, Materials and Bioengineering, Kansai University, Suita, Osaka 564-8680, Japan
| | - Hirohisa Furukawa
- Department of Chemistry and
Materials Engineering, Faculty of Chemistry, Materials and Bioengineering, Kansai University, Suita, Osaka 564-8680, Japan
| | - Maito Fuji
- Department of Chemistry and
Materials Engineering, Faculty of Chemistry, Materials and Bioengineering, Kansai University, Suita, Osaka 564-8680, Japan
| | - Yasushi Obora
- Department of Chemistry and
Materials Engineering, Faculty of Chemistry, Materials and Bioengineering, Kansai University, Suita, Osaka 564-8680, Japan
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12
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Liu R, Giordano L, Tenaglia A. Ruthenium-Catalyzed [2+2+2] Cycloaddition of 1,6-Enynes and Unactivated Alkynes: Access to Ring-Fused Cyclohexadienes. Chem Asian J 2017. [PMID: 28628272 DOI: 10.1002/asia.201700642] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
The [2+2+2] intermolecular carbocyclization reactions between 1,6-enynes and alkynes catalyzed by [RuCl(cod)(Cp*)] (cod=1,5-cyclooctadiene, Cp*=pentamethylcyclopentadienyl) are reported to provide bicyclohexa-1,3-dienes. The presented reaction conditions are compatible with internal and terminal alkynes and the chemo- and regioselectivity issues are controlled by the presence of substituents at the propargyl carbon center of the alkyne(s) partner(s).
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Affiliation(s)
- Rui Liu
- Aix-Marseille Université, CNRS, Centrale Marseille, iSm2, Marseille, France
| | - Laurent Giordano
- Aix-Marseille Université, CNRS, Centrale Marseille, iSm2, Marseille, France
| | - Alphonse Tenaglia
- Aix-Marseille Université, CNRS, Centrale Marseille, iSm2, Marseille, France
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13
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Kamei M, Watanabe K, Fuji M, Obora Y. Selective Intermolecular [2+2+2] Cycloaddition of Terminal Alkynes and Alkenes by NbCl5as a Catalyst Precursor. CHEM LETT 2016. [DOI: 10.1246/cl.160481] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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14
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Domínguez G, Pérez-Castells J. Alkenes in [2+2+2] Cycloadditions. Chemistry 2016; 22:6720-39. [DOI: 10.1002/chem.201504987] [Citation(s) in RCA: 101] [Impact Index Per Article: 12.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2015] [Indexed: 12/21/2022]
Affiliation(s)
- Gema Domínguez
- Chemistry and Biochemistry department; Universidad San Pablo CEU; Urb. Montepríncipe. Boadilla del Monte. E28668 Madrid Spain
| | - Javier Pérez-Castells
- Chemistry and Biochemistry department; Universidad San Pablo CEU; Urb. Montepríncipe. Boadilla del Monte. E28668 Madrid Spain
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15
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Satoh Y, Obora Y. Niobium Complexes in Organic Transformations: From Stoichiometric Reactions to Catalytic [2+2+2] Cycloaddition Reactions. European J Org Chem 2015. [DOI: 10.1002/ejoc.201500358] [Citation(s) in RCA: 68] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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16
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Satoh Y, Obora Y. Early Transition Niobium Compounds in Organic Transformation^|^mdash;From Stoichiometric Reaction to Catalytic Reaction. J SYN ORG CHEM JPN 2014. [DOI: 10.5059/yukigoseikyokaishi.72.257] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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17
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Ozaki M, Obora Y, Tada Y, Ishii Y. Generation of low-valent alkoxy niobium from Nb(OEt)5 and Grignard reagents and their use as catalysts in the cyclotrimerization of isocyanates. J Organomet Chem 2013. [DOI: 10.1016/j.jorganchem.2013.05.035] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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18
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Greszler SN, Reichard HA, Micalizio GC. Asymmetric synthesis of dihydroindanes by convergent alkoxide-directed metallacycle-mediated bond formation. J Am Chem Soc 2012; 134:2766-74. [PMID: 22235773 DOI: 10.1021/ja2105043] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
A convergent synthesis of highly substituted and stereodefined dihydroindanes is described from alkoxide-directed Ti-mediated cross-coupling of internal alkynes with substituted 4-hydroxy-1,6-enynes (substrates that derive from 2-directional functionalization of readily available epoxy alcohol derivatives). In addition to describing a new and highly stereoselective approach to bimolecular [2 + 2 + 2] annulation that delivers products not available with other methods in this area of chemical reactivity, evidence is provided to support annulation by way of regioselective alkyne-alkyne coupling, followed by metal-centered [4 + 2] rather than stepwise alkene insertion and reductive elimination. Overall, the reaction proceeds with exquisite stereochemical control and defines a convenient, convergent, and enantiospecific entry to fused carbocycles of great potential value in target-oriented synthesis and medicinal chemistry.
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Affiliation(s)
- Stephen N Greszler
- Department of Chemistry, The Scripps Research Institute, Scripps Florida, Jupiter, Florida 33458, USA
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19
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Ren S, Seki T, Necas D, Shimizu H, Nakajima K, Kanno KI, Song Z, Takahashi T. Selective Dimerization of Aryl-substituted Terminal Alkynes on Bis(indenyl)zirconocene Derivatives. CHEM LETT 2011. [DOI: 10.1246/cl.2011.1443] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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20
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Dachs A, Pla-Quintana A, Parella T, Solà M, Roglans A. Intramolecular [2+2+2] Cycloaddition Reactions of Yne-ene-yne and Yne-yne-ene Enediynes Catalysed by RhI: Experimental and Theoretical Mechanistic Studies. Chemistry 2011; 17:14493-507. [DOI: 10.1002/chem.201102210] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2011] [Indexed: 11/06/2022]
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21
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Satoh Y, Obora Y. Active Low-Valent Niobium Catalysts from NbCl5 and Hydrosilanes for Selective Intermolecular Cycloadditions. J Org Chem 2011; 76:8569-73. [DOI: 10.1021/jo201757w] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Yasushi Satoh
- Department of Chemistry and Materials Engineering, Faculty of Chemistry, Materials and Bioengineering, Kansai University, Suita, Osaka 564-8680, Japan
| | - Yasushi Obora
- Department of Chemistry and Materials Engineering, Faculty of Chemistry, Materials and Bioengineering, Kansai University, Suita, Osaka 564-8680, Japan
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22
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Summerscales OT, Fettinger JC, Power PP. C–H Activation of Cycloalkenes by Dimetallynes (M = Ge, Sn) under Ambient Conditions. J Am Chem Soc 2011; 133:11960-3. [DOI: 10.1021/ja205816d] [Citation(s) in RCA: 60] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Affiliation(s)
- Owen T. Summerscales
- Department of Chemistry, University of California, Davis, California 95616, United States
| | - James C. Fettinger
- Department of Chemistry, University of California, Davis, California 95616, United States
| | - Philip P. Power
- Department of Chemistry, University of California, Davis, California 95616, United States
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23
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Kondo T. New Catalytic Performances of Ruthenium and Rhodium Complexes Directed toward Organic Synthesis with High Atom Efficiency. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2011. [DOI: 10.1246/bcsj.20110019] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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24
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Satoh Y, Obora Y. NbCl3-catalyzed three-component [2 + 2 + 2] cycloaddition reaction of terminal alkynes, internal alkynes, and alkenes to 1,3,4,5-tetrasubstituted 1,3-cyclohexadienes. Org Lett 2011; 13:2568-71. [PMID: 21491900 DOI: 10.1021/ol200662e] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Three-component [2 + 2 + 2] cycloaddition of terminal alkynes, internal alkynes, and terminal alkenes is achieved using an NbCl(3)(DME) catalyst, leading to 1,3,4,5-substituted 1,3-cyclohexadienes in excellent yields with high chemo- and regioselectivity.
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Affiliation(s)
- Yasushi Satoh
- Department of Chemistry and Materials Engineering, Faculty of Chemistry, Materials and Bioengineering, Kansai University, Suita, Osaka, Japan
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25
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Obora Y, Satoh Y, Ishii Y. NbCl3-catalyzed intermolecular [2+2+2] cycloaddition of alkynes and alpha,omega-dienes: highly chemo- and regioselective formation of 5-omega-alkenyl-1,4-substituted-1,3-cyclohexadiene derivatives. J Org Chem 2010; 75:6046-9. [PMID: 20681534 DOI: 10.1021/jo101229u] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Intermolecular [2+2+2] cycloaddition of tert-butylacetylene with alpha,omega-dienes was successfully achieved by NbCl(3)(DME) catalyst to afford 5-omega-alkenyl-1,4-disubstituted-1,3-cyclohexadienes in excellent yields with high chemo- and regioselectivity.
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Affiliation(s)
- Yasushi Obora
- Department of Chemistry and Materials Engineering, Faculty of Chemistry, Materials and Bioengineering and ORDIST, Kansai University, Suita, Osaka 564-8680, Japan.
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26
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Watanabe T, Ishida Y, Matsuo T, Kawaguchi H. Syntheses and structures of zirconium(iv) complexes supported by 2,6-di-adamantylaryloxide ligands and formation of arene-bridged dizirconium complexes with an inverse sandwich structure. Dalton Trans 2010:484-91. [DOI: 10.1039/b911082h] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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27
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Inglesby PA, Evans PA. Stereoselective transition metal-catalysed higher-order carbocyclisation reactions. Chem Soc Rev 2010; 39:2791-805. [PMID: 20505862 DOI: 10.1039/b913110h] [Citation(s) in RCA: 253] [Impact Index Per Article: 18.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Affiliation(s)
- Phillip A Inglesby
- University of Liverpool, Department of Chemistry, Crown St., Liverpool, L69 7ZD, UK
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28
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Liu S, Kokot S, Will G. Photochemistry and chemometrics—An overview. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY C-PHOTOCHEMISTRY REVIEWS 2009. [DOI: 10.1016/j.jphotochemrev.2010.01.001] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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29
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Obora Y, Takeshita K, Ishii Y. NbCl(3)-catalyzed [2+2+2] intermolecular cycloaddition of alkynes and alkenes to 1,3-cyclohexadiene derivatives. Org Biomol Chem 2008; 7:428-31. [PMID: 19156304 DOI: 10.1039/b820352k] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
NbCl(3)(DME)-catalyzed [2+2+2] intermolecular cycloaddition of alkynes and alkenes was successfully achieved to give 1,4,5-trisubstituted-1,3-cyclohexadiene derivatives in good yields.
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Affiliation(s)
- Yasushi Obora
- Department of Chemistry and Materials Engineering, Faculty of Chemistry, Materials and Bioengineering, Kansai University, Suita, Osaka 564-8680, Japan.
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30
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Krauzy-Dziedzic K, Ejfler J, Szafert S, Sobota P. Titanium and zirconium benzofuranoxides. Crystal structures and catalytic properties. Dalton Trans 2008:2620-6. [DOI: 10.1039/b715048b] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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31
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Liu J, Zhang WX, Guo X, Hou Z, Xi Z. Isolation and Synthetic Applications of 2,5-Bis(alkynylsilyl) Zirconacyclopentadienes. Organometallics 2007. [DOI: 10.1021/om701002k] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Junhui Liu
- Beijing National Laboratory for Molecular Sciences (BNLMS), Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, College of Chemistry, Peking University, Beijing 100871, Peopleʼs Republic of China, and Organometallic Chemistry Laboratory, RIKEN (the Institute of Physical and Chemical Research), Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - Wen-Xiong Zhang
- Beijing National Laboratory for Molecular Sciences (BNLMS), Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, College of Chemistry, Peking University, Beijing 100871, Peopleʼs Republic of China, and Organometallic Chemistry Laboratory, RIKEN (the Institute of Physical and Chemical Research), Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - Xiangyu Guo
- Beijing National Laboratory for Molecular Sciences (BNLMS), Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, College of Chemistry, Peking University, Beijing 100871, Peopleʼs Republic of China, and Organometallic Chemistry Laboratory, RIKEN (the Institute of Physical and Chemical Research), Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - Zhaomin Hou
- Beijing National Laboratory for Molecular Sciences (BNLMS), Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, College of Chemistry, Peking University, Beijing 100871, Peopleʼs Republic of China, and Organometallic Chemistry Laboratory, RIKEN (the Institute of Physical and Chemical Research), Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - Zhenfeng Xi
- Beijing National Laboratory for Molecular Sciences (BNLMS), Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, College of Chemistry, Peking University, Beijing 100871, Peopleʼs Republic of China, and Organometallic Chemistry Laboratory, RIKEN (the Institute of Physical and Chemical Research), Hirosawa 2-1, Wako, Saitama 351-0198, Japan
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32
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Rhodium-catalyzed enantioselective [2+2+2] cycloaddition of diynes with unfunctionalized alkenes. Tetrahedron 2007. [DOI: 10.1016/j.tet.2007.10.053] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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33
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Tsuchikama K, Kuwata Y, Shibata T. Highly enantioselective construction of a chiral spirocyclic structure by the [2 + 2 + 2] cycloaddition of diynes and exo-methylene cyclic compounds. J Am Chem Soc 2007; 128:13686-7. [PMID: 17044686 DOI: 10.1021/ja064257u] [Citation(s) in RCA: 70] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The enantioselective [2 + 2 + 2] cycloaddition of 1,6-diynes with alpha-methylene lactones and cyclic ketones gave various chiral spirocyclic compounds. The reaction proceeded with high enantioselectivity when the rhodium-xylylBINAP complex was used as a chiral catalyst. Not only exo-methylene cyclic compounds but also exo-methylene acyclic compounds could be used as coupling partners for diynes. The present protocol provides access to a new chiral library possessing a quaternary carbon center, including a spirocyclic system.
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Affiliation(s)
- Kyoji Tsuchikama
- Department of Chemistry, School of Science and Engineering, Waseda University, Shinjuku, Tokyo, 169-8555, Japan
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34
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Functional Hyperbranched Macromolecules Constructed from Acetylenic Triple-Bond Building Blocks. FUNCTIONAL MATERIALS AND BIOMATERIALS 2007. [DOI: 10.1007/12_2007_112] [Citation(s) in RCA: 93] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
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35
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Ladipo FT. SYNTHESIS AND REACTIVITY OF WELL-CHARACTERIZED LOW-VALENT TITANIUM SPECIES. COMMENT INORG CHEM 2006. [DOI: 10.1080/02603590600767138] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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36
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Bassett KC, You F, Graham PM, Myers WH, Sabat M, Harman WD. Furan [3 + 2] Dipolar Cycloadditions Promoted by a π-Basic Tungsten Metal Fragment. Organometallics 2005. [DOI: 10.1021/om0506926] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Kimberley C. Bassett
- Departments of Chemistry, University of Virginia, Charlottesville, Virginia 22901-4319, and University of Richmond, Richmond, Virginia 23173
| | - Fei You
- Departments of Chemistry, University of Virginia, Charlottesville, Virginia 22901-4319, and University of Richmond, Richmond, Virginia 23173
| | - Peter M. Graham
- Departments of Chemistry, University of Virginia, Charlottesville, Virginia 22901-4319, and University of Richmond, Richmond, Virginia 23173
| | - William H. Myers
- Departments of Chemistry, University of Virginia, Charlottesville, Virginia 22901-4319, and University of Richmond, Richmond, Virginia 23173
| | - Michal Sabat
- Departments of Chemistry, University of Virginia, Charlottesville, Virginia 22901-4319, and University of Richmond, Richmond, Virginia 23173
| | - W. Dean Harman
- Departments of Chemistry, University of Virginia, Charlottesville, Virginia 22901-4319, and University of Richmond, Richmond, Virginia 23173
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37
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Owiny D, Kingston JV, Maynor M, Parkin S, Kampf JW, Ladipo FT. Reductive Coupling of [(RO)2Ti(L2)2] Complexes Containing a Chelating Bis(aryloxide) Ligand with Ketones (L2 = bpy, dmbpy, or phen). Organometallics 2005. [DOI: 10.1021/om050231k] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- David Owiny
- Department of Chemistry, University of Kentucky, Lexington, Kentucky 40506-0055, and Department of Chemistry, University of Michigan, Ann Arbor, Michigan 48109-1055
| | - Jesudoss V. Kingston
- Department of Chemistry, University of Kentucky, Lexington, Kentucky 40506-0055, and Department of Chemistry, University of Michigan, Ann Arbor, Michigan 48109-1055
| | - Marc Maynor
- Department of Chemistry, University of Kentucky, Lexington, Kentucky 40506-0055, and Department of Chemistry, University of Michigan, Ann Arbor, Michigan 48109-1055
| | - Sean Parkin
- Department of Chemistry, University of Kentucky, Lexington, Kentucky 40506-0055, and Department of Chemistry, University of Michigan, Ann Arbor, Michigan 48109-1055
| | - Jeff W. Kampf
- Department of Chemistry, University of Kentucky, Lexington, Kentucky 40506-0055, and Department of Chemistry, University of Michigan, Ann Arbor, Michigan 48109-1055
| | - Folami T. Ladipo
- Department of Chemistry, University of Kentucky, Lexington, Kentucky 40506-0055, and Department of Chemistry, University of Michigan, Ann Arbor, Michigan 48109-1055
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38
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Turner LE, Thorn MG, Fanwick PE, Rothwell IP. Structural and Stereochemical Aspects of the Group 4 Metal Chemistry of Constrained-Geometry 2-(Indenyl)phenoxide Ligation. Organometallics 2004. [DOI: 10.1021/om0305871] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Luke E. Turner
- Department of Chemistry, Purdue University, 560 Oval Drive, West Lafayette, Indiana 47907-2038
| | - Matthew G. Thorn
- Department of Chemistry, Purdue University, 560 Oval Drive, West Lafayette, Indiana 47907-2038
| | - Phillip E. Fanwick
- Department of Chemistry, Purdue University, 560 Oval Drive, West Lafayette, Indiana 47907-2038
| | - Ian P. Rothwell
- Department of Chemistry, Purdue University, 560 Oval Drive, West Lafayette, Indiana 47907-2038
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39
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Sung MJ, Pang JH, Park SB, Cha JK. Titanium-mediated [2 + 2 + 2] coupling of diynes with homoallylic alcohols. Org Lett 2003; 5:2137-40. [PMID: 12790548 DOI: 10.1021/ol034592c] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
[reaction: see text] In connection with the known diyne-ene [2 + 2 + 2] cycloaddition reactions mediated by titanium aryloxides, the ability of titanium alkoxides to promote coupling of a titanacyclopentadiene with an alkene has been assessed for the isomerization-free preparation of 1,3-cyclohexadienes. The successful cycloaddition by titanium alkoxides is predicated on the use of homoallylic alcohols as the olefin component. With secondary homoallylic alcohols, high 1,3-diastereoselectivity is observed, which lends itself to enantioselective preparation of functionalized 1,3-cyclohexadienes.
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Affiliation(s)
- Moo Je Sung
- Department of Chemistry, University of Alabama, Tuscaloosa, Alabama 35487, USA
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40
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Lee J, Fanwick PE, Rothwell IP. Ancillary Ligand Control of the Regiochemistry of Coupling of 3,3-Dimethyl-1-butyne at Titanium Metal Centers. Organometallics 2003. [DOI: 10.1021/om0209677] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Jongtaik Lee
- Department of Chemistry, Purdue University, 560 Oval Drive, West Lafayette, Indiana 47907-2038
| | - Phillip E. Fanwick
- Department of Chemistry, Purdue University, 560 Oval Drive, West Lafayette, Indiana 47907-2038
| | - Ian P. Rothwell
- Department of Chemistry, Purdue University, 560 Oval Drive, West Lafayette, Indiana 47907-2038
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41
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Himes RA, Fanwick PE, Rothwell IP. Novel, stereoselective tricyclization of a dienyne by titanium aryloxide centers. Chem Commun (Camb) 2003:18-9. [PMID: 12610944 DOI: 10.1039/b209889j] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Titanium centers supported by aryloxide ligation mediate the tricyclization of a dienyne via intramolecular insertion of an olefin into the titanium-vinyl bond of a titanacyclopent-2-ene.
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Affiliation(s)
- Richard A Himes
- Department of Chemistry, Purdue University, 1393 Brown Building, West Lafayette, IN 47907-1393, USA
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42
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Xu K, Peng H, Sun Q, Dong Y, Salhi F, Luo J, Chen J, Huang Y, Zhang D, Xu Z, Tang BZ. Polycyclotrimerization of Diynes: Synthesis and Properties of Hyperbranched Polyphenylenes. Macromolecules 2002. [DOI: 10.1021/ma020365z] [Citation(s) in RCA: 77] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Kaitian Xu
- Department of Chemistry, Institute of Nano Science and Technology, Center for Display Research, and Open Laboratory of Chirotechnology of the Institute of Molecular Technology for Drug Discovery and Synthesis, Hong Kong University of Science & Technology, Clear Water Bay, Kowloon, Hong Kong, China; and Institute of Polymer Science and Engineering, East China University of Science & Technology, Shanghai 200237, China
| | - Han Peng
- Department of Chemistry, Institute of Nano Science and Technology, Center for Display Research, and Open Laboratory of Chirotechnology of the Institute of Molecular Technology for Drug Discovery and Synthesis, Hong Kong University of Science & Technology, Clear Water Bay, Kowloon, Hong Kong, China; and Institute of Polymer Science and Engineering, East China University of Science & Technology, Shanghai 200237, China
| | - Qunhui Sun
- Department of Chemistry, Institute of Nano Science and Technology, Center for Display Research, and Open Laboratory of Chirotechnology of the Institute of Molecular Technology for Drug Discovery and Synthesis, Hong Kong University of Science & Technology, Clear Water Bay, Kowloon, Hong Kong, China; and Institute of Polymer Science and Engineering, East China University of Science & Technology, Shanghai 200237, China
| | - Yuping Dong
- Department of Chemistry, Institute of Nano Science and Technology, Center for Display Research, and Open Laboratory of Chirotechnology of the Institute of Molecular Technology for Drug Discovery and Synthesis, Hong Kong University of Science & Technology, Clear Water Bay, Kowloon, Hong Kong, China; and Institute of Polymer Science and Engineering, East China University of Science & Technology, Shanghai 200237, China
| | - Fouad Salhi
- Department of Chemistry, Institute of Nano Science and Technology, Center for Display Research, and Open Laboratory of Chirotechnology of the Institute of Molecular Technology for Drug Discovery and Synthesis, Hong Kong University of Science & Technology, Clear Water Bay, Kowloon, Hong Kong, China; and Institute of Polymer Science and Engineering, East China University of Science & Technology, Shanghai 200237, China
| | - Jingdong Luo
- Department of Chemistry, Institute of Nano Science and Technology, Center for Display Research, and Open Laboratory of Chirotechnology of the Institute of Molecular Technology for Drug Discovery and Synthesis, Hong Kong University of Science & Technology, Clear Water Bay, Kowloon, Hong Kong, China; and Institute of Polymer Science and Engineering, East China University of Science & Technology, Shanghai 200237, China
| | - Junwu Chen
- Department of Chemistry, Institute of Nano Science and Technology, Center for Display Research, and Open Laboratory of Chirotechnology of the Institute of Molecular Technology for Drug Discovery and Synthesis, Hong Kong University of Science & Technology, Clear Water Bay, Kowloon, Hong Kong, China; and Institute of Polymer Science and Engineering, East China University of Science & Technology, Shanghai 200237, China
| | - Yi Huang
- Department of Chemistry, Institute of Nano Science and Technology, Center for Display Research, and Open Laboratory of Chirotechnology of the Institute of Molecular Technology for Drug Discovery and Synthesis, Hong Kong University of Science & Technology, Clear Water Bay, Kowloon, Hong Kong, China; and Institute of Polymer Science and Engineering, East China University of Science & Technology, Shanghai 200237, China
| | - Dezhen Zhang
- Department of Chemistry, Institute of Nano Science and Technology, Center for Display Research, and Open Laboratory of Chirotechnology of the Institute of Molecular Technology for Drug Discovery and Synthesis, Hong Kong University of Science & Technology, Clear Water Bay, Kowloon, Hong Kong, China; and Institute of Polymer Science and Engineering, East China University of Science & Technology, Shanghai 200237, China
| | - Zhongde Xu
- Department of Chemistry, Institute of Nano Science and Technology, Center for Display Research, and Open Laboratory of Chirotechnology of the Institute of Molecular Technology for Drug Discovery and Synthesis, Hong Kong University of Science & Technology, Clear Water Bay, Kowloon, Hong Kong, China; and Institute of Polymer Science and Engineering, East China University of Science & Technology, Shanghai 200237, China
| | - Ben Zhong Tang
- Department of Chemistry, Institute of Nano Science and Technology, Center for Display Research, and Open Laboratory of Chirotechnology of the Institute of Molecular Technology for Drug Discovery and Synthesis, Hong Kong University of Science & Technology, Clear Water Bay, Kowloon, Hong Kong, China; and Institute of Polymer Science and Engineering, East China University of Science & Technology, Shanghai 200237, China
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43
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Thorn MG, Lee J, Fanwick PE, Rothwell IP. Synthesis, structure and molecular dynamics of η2-iminoacyl compounds [Cp(ArO)Zr(η2-ButNCCH2Ph)(CH2Ph)] and [Cp(ArO)Zr(η2-ButNCCH2Ph)2]. ACTA ACUST UNITED AC 2002. [DOI: 10.1039/b202244n] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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44
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From 3,4-dinitrothiophene to 1,2-diaryl-4-nitrobenzenes through ( E , E , E )-1,6-diaryl-3-nitro-1,3,5-hexatrienes. Tetrahedron 2001. [DOI: 10.1016/s0040-4020(01)00898-5] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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45
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Ozerov OV, Brock CP, Carr SD, Ladipo FT. Unusual Reductive Coupling of Alkynes and Ketones: Reactivity of Titanacycles Supported by Dimethylsilylcalix[4]arene (DMSC) Ligands. Organometallics 2000. [DOI: 10.1021/om0005349] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Oleg V. Ozerov
- Department of Chemistry, University of Kentucky, Lexington, Kentucky 40506-0055
| | - Carolyn P. Brock
- Department of Chemistry, University of Kentucky, Lexington, Kentucky 40506-0055
| | - Shana D. Carr
- Department of Chemistry, University of Kentucky, Lexington, Kentucky 40506-0055
| | - Folami T. Ladipo
- Department of Chemistry, University of Kentucky, Lexington, Kentucky 40506-0055
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46
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Ozerov OV, Parkin S, Brock CP, Ladipo FT. Reactivity of a Well-Characterized Titananorbornadiene (η6-Arene) Complex with Ketones and Aldehydes. Organometallics 2000. [DOI: 10.1021/om000410w] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Oleg V. Ozerov
- Department of Chemistry, University of Kentucky, Lexington, Kentucky 40506-0055
| | - Sean Parkin
- Department of Chemistry, University of Kentucky, Lexington, Kentucky 40506-0055
| | - Carolyn P. Brock
- Department of Chemistry, University of Kentucky, Lexington, Kentucky 40506-0055
| | - Folami T. Ladipo
- Department of Chemistry, University of Kentucky, Lexington, Kentucky 40506-0055
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47
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Sato F, Urabe H, Okamoto S. Synthesis of organotitanium complexes from alkenes and alkynes and their synthetic applications. Chem Rev 2000; 100:2835-86. [PMID: 11749307 DOI: 10.1021/cr990277l] [Citation(s) in RCA: 320] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- F Sato
- Department of Biomolecular Engineering, Tokyo Institute of Technology, 4259 Nagatsuta-cho, Midori-ku, Yokohama, Kanagawa 226-8501, Japan
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48
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Ozerov OV, Patrick BO, Ladipo FT. Highly Regioselective [2 + 2 + 2] Cycloaddition of Terminal Alkynes Catalyzed by η6-Arene Complexes of Titanium Supported by Dimethylsilyl-Bridged p-tert-Butyl Calix[4]arene Ligand. J Am Chem Soc 2000. [DOI: 10.1021/ja994543o] [Citation(s) in RCA: 108] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Oleg V. Ozerov
- Contribution from the Department of Chemistry, University of Kentucky, Lexington, Kentucky 40506-0055
| | - Brian O. Patrick
- Contribution from the Department of Chemistry, University of Kentucky, Lexington, Kentucky 40506-0055
| | - Folami T. Ladipo
- Contribution from the Department of Chemistry, University of Kentucky, Lexington, Kentucky 40506-0055
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49
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Nakayama Y, Watanabe K, Ueyama N, Nakamura A, Harada A, Okuda J. Titanium Complexes Having Chelating Diaryloxo Ligands Bridged by Tellurium and Their Catalytic Behavior in the Polymerization of Ethylene. Organometallics 2000. [DOI: 10.1021/om990906h] [Citation(s) in RCA: 82] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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50
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Yamamoto Y, Kitahara H, Ogawa R, Kawaguchi H, Tatsumi K, Itoh K. Ru(II)-Catalyzed Cycloadditions of 1,6-Heptadiynes with Alkenes: New Synthetic Potential of Ruthenacyclopentatrienes as Biscarbenoids in Tandem Cyclopropanation of Bicycloalkenes and Heteroatom-Assisted Cyclocotrimerization of 1,6-Heptadiynes with Heterocyclic Alkenes. J Am Chem Soc 2000. [DOI: 10.1021/ja9942890] [Citation(s) in RCA: 106] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Yoshihiko Yamamoto
- Contribution from the Department of Applied Chemistry and Department of Molecular Design and Engineering, Graduate School of Engineering, Nagoya University, Chikusa, Nagoya 464-8603, Japan, and Research Center for Materials Science and Department of Chemistry, Graduate School of Science, Nagoya University, Chikusa, Nagoya 464-8602, Japan
| | - Hideaki Kitahara
- Contribution from the Department of Applied Chemistry and Department of Molecular Design and Engineering, Graduate School of Engineering, Nagoya University, Chikusa, Nagoya 464-8603, Japan, and Research Center for Materials Science and Department of Chemistry, Graduate School of Science, Nagoya University, Chikusa, Nagoya 464-8602, Japan
| | - Ryuji Ogawa
- Contribution from the Department of Applied Chemistry and Department of Molecular Design and Engineering, Graduate School of Engineering, Nagoya University, Chikusa, Nagoya 464-8603, Japan, and Research Center for Materials Science and Department of Chemistry, Graduate School of Science, Nagoya University, Chikusa, Nagoya 464-8602, Japan
| | - Hiroyuki Kawaguchi
- Contribution from the Department of Applied Chemistry and Department of Molecular Design and Engineering, Graduate School of Engineering, Nagoya University, Chikusa, Nagoya 464-8603, Japan, and Research Center for Materials Science and Department of Chemistry, Graduate School of Science, Nagoya University, Chikusa, Nagoya 464-8602, Japan
| | - Kazuyuki Tatsumi
- Contribution from the Department of Applied Chemistry and Department of Molecular Design and Engineering, Graduate School of Engineering, Nagoya University, Chikusa, Nagoya 464-8603, Japan, and Research Center for Materials Science and Department of Chemistry, Graduate School of Science, Nagoya University, Chikusa, Nagoya 464-8602, Japan
| | - Kenji Itoh
- Contribution from the Department of Applied Chemistry and Department of Molecular Design and Engineering, Graduate School of Engineering, Nagoya University, Chikusa, Nagoya 464-8603, Japan, and Research Center for Materials Science and Department of Chemistry, Graduate School of Science, Nagoya University, Chikusa, Nagoya 464-8602, Japan
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