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Ge Y, Ye F, Yang J, Spannenberg A, Jiao H, Jackstell R, Beller M. Palladium-Catalyzed Cascade Carbonylation to α,β-Unsaturated Piperidones via Selective Cleavage of Carbon-Carbon Triple Bonds. Angew Chem Int Ed Engl 2021; 60:22393-22400. [PMID: 34382728 PMCID: PMC8519052 DOI: 10.1002/anie.202108120] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2021] [Revised: 07/29/2021] [Indexed: 12/23/2022]
Abstract
A direct and selective synthesis of α,β-unsaturated piperidones by a new palladium-catalyzed cascade carbonylation is described. In the presented protocol, easily available propargylic alcohols react with aliphatic amines to provide a broad variety of interesting heterocycles. Key to the success of this transformation is a remarkable catalytic cleavage of the present carbon-carbon triple bond by using a specific catalyst with 2-diphenylphosphinopyridine as ligand and appropriate reaction conditions. Mechanistic studies and control experiments revealed branched unsaturated acid 11 as crucial intermediate.
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Affiliation(s)
- Yao Ge
- Leibniz-Institut für Katalyse e. V.Albert-Einstein-Straße 29a18059RostockGermany
| | - Fei Ye
- Leibniz-Institut für Katalyse e. V.Albert-Einstein-Straße 29a18059RostockGermany
- Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of EducationKey Laboratory of Organosilicon Material Technology of Zhejiang ProvinceHangzhou Normal UniversityNo. 2318, Yuhangtang Road311121HangzhouP. R. China
| | - Ji Yang
- Leibniz-Institut für Katalyse e. V.Albert-Einstein-Straße 29a18059RostockGermany
| | - Anke Spannenberg
- Leibniz-Institut für Katalyse e. V.Albert-Einstein-Straße 29a18059RostockGermany
| | - Haijun Jiao
- Leibniz-Institut für Katalyse e. V.Albert-Einstein-Straße 29a18059RostockGermany
| | - Ralf Jackstell
- Leibniz-Institut für Katalyse e. V.Albert-Einstein-Straße 29a18059RostockGermany
| | - Matthias Beller
- Leibniz-Institut für Katalyse e. V.Albert-Einstein-Straße 29a18059RostockGermany
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2
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Ge Y, Ye F, Yang J, Spannenberg A, Jiao H, Jackstell R, Beller M. Palladium‐Catalyzed Cascade Carbonylation to α,β‐Unsaturated Piperidones via Selective Cleavage of Carbon–Carbon Triple Bonds. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202108120] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Yao Ge
- Leibniz-Institut für Katalyse e. V. Albert-Einstein-Straße 29a 18059 Rostock Germany
| | - Fei Ye
- Leibniz-Institut für Katalyse e. V. Albert-Einstein-Straße 29a 18059 Rostock Germany
- Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education Key Laboratory of Organosilicon Material Technology of Zhejiang Province Hangzhou Normal University No. 2318, Yuhangtang Road 311121 Hangzhou P. R. China
| | - Ji Yang
- Leibniz-Institut für Katalyse e. V. Albert-Einstein-Straße 29a 18059 Rostock Germany
| | - Anke Spannenberg
- Leibniz-Institut für Katalyse e. V. Albert-Einstein-Straße 29a 18059 Rostock Germany
| | - Haijun Jiao
- Leibniz-Institut für Katalyse e. V. Albert-Einstein-Straße 29a 18059 Rostock Germany
| | - Ralf Jackstell
- Leibniz-Institut für Katalyse e. V. Albert-Einstein-Straße 29a 18059 Rostock Germany
| | - Matthias Beller
- Leibniz-Institut für Katalyse e. V. Albert-Einstein-Straße 29a 18059 Rostock Germany
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4
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Zhou M, Luo M, Hu M, Li J. Palladium‐Catalyzed
Oxidative C≡C Triple Bond Cleavage of
2‐Alkynyl
Carbonyl Compounds Toward 1,
2‐Dicarbonyl
Compounds
†. CHINESE J CHEM 2020. [DOI: 10.1002/cjoc.202000040] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Affiliation(s)
- Ming‐Bo Zhou
- Key Laboratory of Chemical Biology & Traditional Chinese Medicine Research (Ministry of Education), Hunan Normal University Changsha Hunan 410081 China
| | - Mu‐Jia Luo
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle, Nanchang Hangkong University Nanchang Jiangxi 330063 China
- State Key Laboratory of Chemo/Biosensing and Chemometrics, Hunan University Changsha Hunan 410082 China
| | - Ming Hu
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle, Nanchang Hangkong University Nanchang Jiangxi 330063 China
| | - Jin‐Heng Li
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle, Nanchang Hangkong University Nanchang Jiangxi 330063 China
- Key Laboratory of Chemical Biology & Traditional Chinese Medicine Research (Ministry of Education), Hunan Normal University Changsha Hunan 410081 China
- State Key Laboratory of Chemo/Biosensing and Chemometrics, Hunan University Changsha Hunan 410082 China
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5
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Zhou MB, Li Y, Ouyang XH, Li JH. Transformations of N-arylpropiolamides to indoline-2,3-diones and acids via C≡C triple bond oxidative cleavage and C(sp2)–H functionalization. Sci China Chem 2019. [DOI: 10.1007/s11426-019-9633-x] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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6
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Xu K, Li Z, Cheng F, Zuo Z, Wang T, Wang M, Liu L. Transition-Metal-Free Cleavage of C–C Triple Bonds in Aromatic Alkynes with S8 and Amides Leading to Aryl Thioamides. Org Lett 2018; 20:2228-2231. [DOI: 10.1021/acs.orglett.8b00573] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
| | | | | | - Zhenzhen Zuo
- College of Chemistry and Molecular Engineering, Zhengzhou University, Zhengzhou 450001, P. R. China
| | | | - Mincan Wang
- College of Chemistry and Molecular Engineering, Zhengzhou University, Zhengzhou 450001, P. R. China
| | - Lantao Liu
- College of Chemistry and Molecular Engineering, Zhengzhou University, Zhengzhou 450001, P. R. China
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7
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Zhou P, Wang JY, Zhang TS, Li G, Hao WJ, Tu SJ, Jiang B. Thiazolium salt-catalyzed C-C triple bond cleavage for accessing substituted 1-naphthols via benzannulation. Chem Commun (Camb) 2018; 54:164-167. [PMID: 29218334 DOI: 10.1039/c7cc08792f] [Citation(s) in RCA: 38] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The first thiazolium salt-catalyzed C-C triple bond cleavage of benzene-linked allene-ynes has been established. The reaction pathway involves [2+2] cycloaddition and ring-opening of in situ generated cyclobutenes with H2O under mild and convenient conditions, and provides practical access to substituted 1-naphthols with potentially valuable applications.
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Affiliation(s)
- Peng Zhou
- School of Chemistry & Materials Science, Jiangsu Normal University, Xuzhou, 221116, P. R. China.
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8
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Wang JY, Zhou P, Li G, Hao WJ, Tu SJ, Jiang B. Synthesis of Functionalized Benzo[g]indoles and 1-Naphthols via Carbon–Carbon Triple Bond Breaking/Rearranging. Org Lett 2017; 19:6682-6685. [DOI: 10.1021/acs.orglett.7b03410] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Affiliation(s)
- Jia-Yin Wang
- School of Chemistry & Materials Science, Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials, Jiangsu Normal University, Xuzhou 221116, P. R. China
| | - Peng Zhou
- School of Chemistry & Materials Science, Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials, Jiangsu Normal University, Xuzhou 221116, P. R. China
- Institute of Chemistry & BioMedical Sciences, Nanjing University, Nanjing 210093, P. R. China
| | - Guigen Li
- Institute of Chemistry & BioMedical Sciences, Nanjing University, Nanjing 210093, P. R. China
- Department
of Chemistry and Biochemistry, Texas Tech University, Lubbock, Texas 79409-1061, United States
| | - Wen-Juan Hao
- School of Chemistry & Materials Science, Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials, Jiangsu Normal University, Xuzhou 221116, P. R. China
| | - Shu-Jiang Tu
- School of Chemistry & Materials Science, Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials, Jiangsu Normal University, Xuzhou 221116, P. R. China
| | - Bo Jiang
- School of Chemistry & Materials Science, Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials, Jiangsu Normal University, Xuzhou 221116, P. R. China
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9
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Dighe SU, Batra S. Visible Light-Induced Iodine-Catalyzed Transformation of Terminal Alkynes to Primary AmidesviaCC Bond Cleavage under Aqueous Conditions. Adv Synth Catal 2016. [DOI: 10.1002/adsc.201500906] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
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10
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Alvarez MA, García ME, Menéndez S, Ruiz MA. Heterometallic clusters derived from the unsaturated carbyne-bridged dimolybdenum complexes [Mo 2 (η 5 -C 5 H 5 ) 2 (μ-CPh) (μ-PCy 2 ) (CO) x ] (x = 1, 2). J Organomet Chem 2015. [DOI: 10.1016/j.jorganchem.2015.09.010] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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11
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Vollmer GY, Wallasch MW, Saurenz D, Eger TR, Bauer H, Wolmershäuser G, Prosenc MH, Sitzmann H. Benzylidyne Bridges from Diphenylacetylene and a Methylidyne Bridge from Methylmagnesium Chloride. Organometallics 2015. [DOI: 10.1021/om501236h] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Guy Y. Vollmer
- FB Chemie der TU, Erwin-Schrödinger-Straße
54, 67663 Kaiserslautern, Germany
| | - Mark W. Wallasch
- FB Chemie der TU, Erwin-Schrödinger-Straße
54, 67663 Kaiserslautern, Germany
| | - Dirk Saurenz
- FB Chemie der TU, Erwin-Schrödinger-Straße
54, 67663 Kaiserslautern, Germany
| | - Tobias R. Eger
- FB Chemie der TU, Erwin-Schrödinger-Straße
54, 67663 Kaiserslautern, Germany
| | - Heiko Bauer
- FB Chemie der TU, Erwin-Schrödinger-Straße
54, 67663 Kaiserslautern, Germany
| | | | - Marc H. Prosenc
- FB Chemie der TU, Erwin-Schrödinger-Straße
54, 67663 Kaiserslautern, Germany
| | - Helmut Sitzmann
- FB Chemie der TU, Erwin-Schrödinger-Straße
54, 67663 Kaiserslautern, Germany
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12
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Sun J, Wang F, Hu H, Wang X, Wu H, Liu Y. Copper(II)-Catalyzed Carbon–Carbon Triple Bond Cleavage of Internal Alkynes for the Synthesis of Annulated Indolizines. J Org Chem 2014; 79:3992-8. [DOI: 10.1021/jo500456d] [Citation(s) in RCA: 56] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- Jinwei Sun
- Jiangsu Key Laboratory of Green Synthetic
for Functional Materials and School of Chemistry and Chemical Engineering, Jiangsu Normal University, Xuzhou 221116, Jiangsu, PR China
| | - Fuyao Wang
- Jiangsu Key Laboratory of Green Synthetic
for Functional Materials and School of Chemistry and Chemical Engineering, Jiangsu Normal University, Xuzhou 221116, Jiangsu, PR China
| | - Huayou Hu
- Jiangsu Key Laboratory
for Chemistry of Low-Dimensional Materials, School of Chemistry and
Chemical Engineering, Huaiyin Normal University, Huaian 223300, Jiangsu, PR China
| | - Xiangshan Wang
- Jiangsu Key Laboratory of Green Synthetic
for Functional Materials and School of Chemistry and Chemical Engineering, Jiangsu Normal University, Xuzhou 221116, Jiangsu, PR China
| | - Hui Wu
- Jiangsu Key Laboratory of Green Synthetic
for Functional Materials and School of Chemistry and Chemical Engineering, Jiangsu Normal University, Xuzhou 221116, Jiangsu, PR China
| | - Yun Liu
- Jiangsu Key Laboratory of Green Synthetic
for Functional Materials and School of Chemistry and Chemical Engineering, Jiangsu Normal University, Xuzhou 221116, Jiangsu, PR China
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13
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Jiang Q, Zhao A, Xu B, Jia J, Liu X, Guo C. PIFA-mediated esterification reaction of alkynes with alcohols via oxidative cleavage of carbon triple bonds. J Org Chem 2014; 79:2709-15. [PMID: 24601600 DOI: 10.1021/jo5003517] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
A metal-free esterification of alkynes via C≡C triple bond cleavage has been developed. In the presence of phenyliodine bis(trifluoroacetate), a diverse range of alkyne and alcohol substrates undergoes triple bond cleavage to produce carboxylic ester motifs in moderate to good yields. The transformation is proposed to proceed via hydroxyethanones and ethanediones as intermediates on the basis of mechanistic studies and exhibits a broad substrate scope and good functional group tolerance.
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Affiliation(s)
- Qing Jiang
- College of Chemistry and Chemical Engineering, Hunan University , Changsha 410082, China
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14
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Sun J, Hu H, Wang F, Wu H, Liu Y. Copper(ii)-catalyzed cleavage of carbon–carbon triple bond to synthesize 1,2,3-triesterindolizines. RSC Adv 2014. [DOI: 10.1039/c4ra06048b] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
An efficient Cu(ii)-catalyzed carbon–carbon triple bond cleavage protocol for the synthesis of 1,2,3-triesterindolizines via the reaction of pyridines with butynedioates has been developed.
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Affiliation(s)
- Jinwei Sun
- Jiangsu Key Laboratory of Green Synthetic for Functional Materials and School of Chemistry and Chemical Engineering
- Jiangsu Normal University
- Xuzhou 221116, P. R. China
| | - Huayou Hu
- Jiangsu Key Laboratory for Chemistry of Low-Dimensional Materials
- School of Chemistry and Chemical Engineering
- Huaiyin Normal University
- Huaian 223300, P. R. China
| | - Fuyao Wang
- Jiangsu Key Laboratory of Green Synthetic for Functional Materials and School of Chemistry and Chemical Engineering
- Jiangsu Normal University
- Xuzhou 221116, P. R. China
| | - Hui Wu
- Jiangsu Key Laboratory of Green Synthetic for Functional Materials and School of Chemistry and Chemical Engineering
- Jiangsu Normal University
- Xuzhou 221116, P. R. China
| | - Yun Liu
- Jiangsu Key Laboratory of Green Synthetic for Functional Materials and School of Chemistry and Chemical Engineering
- Jiangsu Normal University
- Xuzhou 221116, P. R. China
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15
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Yeh WY. C60-induced alkyne–alkyne coupling and alkyne scission reactions of a tungsten tris(diphenylacetylene) complex. Chem Commun (Camb) 2011; 47:1506-8. [DOI: 10.1039/c0cc04034g] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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16
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Hogarth G, Kabir SE, Nordlander E. Cluster chemistry in the Noughties: new developments and their relationship to nanoparticles. Dalton Trans 2010; 39:6153-74. [DOI: 10.1039/c000514b] [Citation(s) in RCA: 64] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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17
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Wang A, Jiang H. Palladium-catalyzed cleavage reaction of carbon-carbon triple bond with molecular oxygen promoted by Lewis acid. J Am Chem Soc 2008; 130:5030-1. [PMID: 18357987 DOI: 10.1021/ja8002217] [Citation(s) in RCA: 160] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A new Lewis acid promoted and palladium-catalyzed cleavage reaction of carbon-carbon triple bond with molecular oxygen was reported, in which alkyne or 1.3-diynes is split into carboxylic ester in various alcohols.
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Affiliation(s)
- Azhong Wang
- The College of Chemistry, South China University of Technology, Guangzhou 510640, PR China
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Cabeza J, del Río I, Miguel D, Sánchez-Vega M. From anN-Methyl N-Heterocyclic Carbene to Carbyne and Carbide Ligands via Multiple CH and CN Bond Activations. Angew Chem Int Ed Engl 2008. [DOI: 10.1002/ange.200705154] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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19
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Cabeza J, del Río I, Miguel D, Sánchez-Vega M. From anN-Methyl N-Heterocyclic Carbene to Carbyne and Carbide Ligands via Multiple CH and CN Bond Activations. Angew Chem Int Ed Engl 2008; 47:1920-2. [DOI: 10.1002/anie.200705154] [Citation(s) in RCA: 61] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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20
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Li B, Xu S, Song H, Wang B. Reactions of (Me2C)(Me2Si)[(η5-C5H3)Mo(CO)3]2 with nitrile and subsequent cleavage of the CN bond by cooperation of molybdenum and ruthenium. J Organomet Chem 2008. [DOI: 10.1016/j.jorganchem.2007.10.026] [Citation(s) in RCA: 10] [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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21
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Liu Y, Song F, Guo S. Cleavage of a carbon-carbon triple bond via gold-catalyzed cascade cyclization/oxidative cleavage reactions of (Z)-enynols with molecular oxygen. J Am Chem Soc 2007; 128:11332-3. [PMID: 16939238 DOI: 10.1021/ja062610q] [Citation(s) in RCA: 180] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A highly efficient carbon-carbon triple bond cleavage reaction of (Z)-enynols was developed, which offered a new route to highly substituted butenolides. The methodology is realized by a tandem reaction using a single gold(I) catalyst, which could catalyze different reactions of cyclization/oxidative cleavage in the same vessel.
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Affiliation(s)
- Yuanhong Liu
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 354 Fenglin Lu, Shanghai 200032, People's Republic of China.
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Watson WH, Poola B, Richmond MG. Ligand substitution in the tetrahedrane clusters RCCo2Mo(η5-indenyl)(CO)8 with 4,5-bis(diphenylphosphino)-4-cyclopenten-1,3-dione (bpcd): Influence of the carbyne and indenyl ligands on the stability of the substitution products and X-ray diffraction structures of HCCo2Mo(η5-indenyl)(CO)6(μ-bpcd) and CoMo(η5-indenyl)(μ-CPh)(CO)2(μ-bpcd)Cl. J Organomet Chem 2006. [DOI: 10.1016/j.jorganchem.2006.08.095] [Citation(s) in RCA: 4] [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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23
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Bott SG, Yang K, Richmond MG. Regiospecific and sequential P–C bond activation/cluster transformations in the reaction of PhCCo2MoCp(CO)8 with the diphosphine ligands 2,3-bis(diphenylphosphino)maleic anhydride (bma) and 3,4-bis(diphenylphosphino)-5-methoxy-2(5H)-furanone (bmf). J Organomet Chem 2006. [DOI: 10.1016/j.jorganchem.2006.05.027] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Cabeza JA, del Río I, Martínez-Méndez L, Miguel D. Ruthenium-Cluster-Mediated Activation of All Bonds of a Methyl Group of 6,6′-Dimethyl-2,2′-bipyridine and 2,9-Dimethyl-1,10-phenanthroline: Transformation of the Latter into a 2-Alkenyl-9-methyl-1,10-phenanthroline Ligand. Chemistry 2006; 12:1529-38. [PMID: 16304643 DOI: 10.1002/chem.200500813] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
The treatment of [Ru3(CO)12] with 6,6'-dimethyl-2,2'-bipyridine (Me2bipy) or 2,9-dimethyl-1,10-phenanthroline (Me2phen) in THF at reflux temperature gives the trinuclear dihydride complexes [Ru3(mu-H)2(mu3-L1)(CO)8] (L1 = HCbipyMe 1 a, HCphenMe 1 b), which result from the activation of two C-H bonds of a methyl group. The hexa-, hepta-, and pentanuclear derivatives [Ru6(mu3-H)(mu5-L2)(mu-CO)3(CO)13] (L2 = CbipyMe 2 a, CphenMe 2 b), [Ru7(mu3-H)(mu5-L2)(mu-CO)2(CO)16] (L2 = CbipyMe 3 a, CphenMe 3 b), and [Ru5(mu-H)(mu5-C)(mu-L3)(CO)13] (L3 = bipyMe 4 a, phenMe 4 b) can also be obtained by treating 1 a and 1 b with [Ru3(CO)12]. Compounds 2 a and 2 b have a basal edge-bridged square-pyramidal metallic skeleton with a carbyne-type C atom capping the four Ru atoms of the pyramid base. The structures of 3 a and 3 b are similar to those of 2 a and 2 b, respectively, but an additional Ru atom now caps a triangular face of the square-pyramidal fragment of the metallic skeleton. The most interesting feature of 2 a, 2 b, 3 a, and 3 b is that their carbyne-type C atoms were originally bound to three hydrogen atoms in Me2bipy or Me2phen and, therefore, they arise from the unprecedented activation of all three C-H bonds of C-bound methyl groups. The pentanuclear compounds 4 a and 4 b contain a carbide ligand surrounded by five Ru atoms in a distorted trigonal-bipyramidal environment. They are the products of a series of processes that includes the activation of all bonds (three C-H and one C-C) of organic methyl groups, and are the first examples of complexes having carbide ligands that arise from C-bonded methyl groups. The alkenyl derivatives [Ru5(mu5-C)(mu-p-MeC6H4CHCHphenMe)(CO)13] (5 b), [Ru5(mu-H)(mu5-C)(mu-p-MeC6H4CHCHphenMe)(p-tolC2)(CO)12] (6 b), and [Ru5(mu-H)(mu5-C)(mu-PhCHCHphenMe)(PhC2)(CO)12] (7 b) have been obtained by treating 4 b with p-tolyl- and phenylacetylene, respectively. Their heterocyclic ligands contain an alkenyl fragment in the position that was originally occupied by a methyl group. Therefore, these complexes are the result of the formal substitution of an alkenyl group for a methyl group of 2,9-dimethyl-1,10- phenanthroline.
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Affiliation(s)
- Javier A Cabeza
- Departamento de Química Orgánica e Inorgánica, Instituto de Química Organometálica Enrique Moles, Universidad de Oviedo, 33071 Oviedo, Spain.
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Shimada T, Yamamoto Y. Carbon-carbon bond cleavage of diynes through the hydroamination with transition metal catalysts. J Am Chem Soc 2003; 125:6646-7. [PMID: 12769570 DOI: 10.1021/ja034105o] [Citation(s) in RCA: 103] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The C-C bond cleavage of terminal and internal diynes takes place readily in the presence of catalytic amounts of Ru3(CO)12 or Pd(NO3)2 and of 2-aminophenol, giving the corresponding benzoxazoles and ketones in good to high yields. There are two different modes of the bond cleavage: (a) an alkyne C-C triple bond is cleaved, and (b) the C-C single bond between the two alkyne groups is cleaved.
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Affiliation(s)
- Tomohiro Shimada
- Department of Chemistry, Graduate School of Science, Tohoku University, Sendai 980-8578, Japan
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Lee DY, Hong BS, Cho EG, Lee H, Jun CH. A hydroacylation-triggered carbon--carbon triple bond cleavage in alkynes via retro-Mannich type fragmentation. J Am Chem Soc 2003; 125:6372-3. [PMID: 12785769 DOI: 10.1021/ja034337n] [Citation(s) in RCA: 69] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The carbon-carbon triple bond in alkyne is cleaved via hydroacylation followed by retro-Mannich type fragmentation in the presence of aldehyde, which triggers a successive C-C bond cleavage.
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Affiliation(s)
- Dae-Yon Lee
- Department of Chemistry, Yonsei University, Seoul 120-749, Korea
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Rational synthesis of tricobalt-molybdenum and -tungsten butterfly clusters with alkyne ligands. J Organomet Chem 2002. [DOI: 10.1016/s0022-328x(02)01720-5] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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