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101
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Fischer M, Oswald T, Ebert H, Schmidtmann M, Beckhaus R. Expanding the Scope: Monopentafulvene and -Benzofulvene Complexes of Zirconium and Hafnium. Organometallics 2018. [DOI: 10.1021/acs.organomet.7b00832] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Malte Fischer
- Institut für Chemie, Carl von Ossietzky Universität Oldenburg, D-26111 Oldenburg, Germany
| | - Tim Oswald
- Institut für Chemie, Carl von Ossietzky Universität Oldenburg, D-26111 Oldenburg, Germany
| | - Hanna Ebert
- Institut für Chemie, Carl von Ossietzky Universität Oldenburg, D-26111 Oldenburg, Germany
| | - Marc Schmidtmann
- Institut für Chemie, Carl von Ossietzky Universität Oldenburg, D-26111 Oldenburg, Germany
| | - Rüdiger Beckhaus
- Institut für Chemie, Carl von Ossietzky Universität Oldenburg, D-26111 Oldenburg, Germany
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102
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Zhang J, Lin L, He C, Xiong Q, Liu X, Feng X. A chiral scandium-complex-catalyzed asymmetric inverse-electron-demand oxa-Diels–Alder reaction of o-quinone methides with fulvenes. Chem Commun (Camb) 2018; 54:74-77. [DOI: 10.1039/c7cc08124c] [Citation(s) in RCA: 42] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
A highly efficient asymmetric [4+2] cycloaddition of o-quinone methides with fulvenes has been realized using a chiral N,N′-dioxide/Sc(iii) complex as the catalyst. The corresponding optically active chromane derivatives were obtained in high yields with excellent dr and ee values.
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Affiliation(s)
- Jianlin Zhang
- Key Laboratory of Green Chemistry & Technology
- Ministry of Education
- College of Chemistry
- Sichuan University
- Chengdu 610064
| | - Lili Lin
- Key Laboratory of Green Chemistry & Technology
- Ministry of Education
- College of Chemistry
- Sichuan University
- Chengdu 610064
| | - Changqiang He
- Key Laboratory of Green Chemistry & Technology
- Ministry of Education
- College of Chemistry
- Sichuan University
- Chengdu 610064
| | - Qian Xiong
- Key Laboratory of Green Chemistry & Technology
- Ministry of Education
- College of Chemistry
- Sichuan University
- Chengdu 610064
| | - Xiaohua Liu
- Key Laboratory of Green Chemistry & Technology
- Ministry of Education
- College of Chemistry
- Sichuan University
- Chengdu 610064
| | - Xiaoming Feng
- Key Laboratory of Green Chemistry & Technology
- Ministry of Education
- College of Chemistry
- Sichuan University
- Chengdu 610064
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103
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Kunz D, Mazzotta F. Ylidic Cp-Ligands: Properties and New Developments. ADVANCES IN ORGANOMETALLIC CHEMISTRY 2018. [DOI: 10.1016/bs.adomc.2018.09.001] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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104
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Shi X, Sasmal A, Soulé JF, Doucet H. Metal-Catalyzed C−H Bond Activation of 5-Membered Carbocyclic Rings: A Powerful Access to Azulene, Acenaphthylene and Fulvene Derivatives. Chem Asian J 2017; 13:143-157. [DOI: 10.1002/asia.201701455] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2017] [Revised: 11/02/2017] [Indexed: 12/11/2022]
Affiliation(s)
- Xinzhe Shi
- Institut des Sciences Chimiques de Rennes, UMR 6226 CNRS-; Université de Rennes 1, “Organométalliques, Matériaux et Catalyse”; Campus de Beaulieu 35042 Rennes France
| | - Arpan Sasmal
- Institut des Sciences Chimiques de Rennes, UMR 6226 CNRS-; Université de Rennes 1, “Organométalliques, Matériaux et Catalyse”; Campus de Beaulieu 35042 Rennes France
| | - Jean-François Soulé
- Institut des Sciences Chimiques de Rennes, UMR 6226 CNRS-; Université de Rennes 1, “Organométalliques, Matériaux et Catalyse”; Campus de Beaulieu 35042 Rennes France
| | - Henri Doucet
- Institut des Sciences Chimiques de Rennes, UMR 6226 CNRS-; Université de Rennes 1, “Organométalliques, Matériaux et Catalyse”; Campus de Beaulieu 35042 Rennes France
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105
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Fischer M, Schmidtmann M, Beckhaus R. Crystal structure of the formal 20 electron zirconocene penta-fulvene complex Cp 2Zr(η 5,η 1-adamantyl-idene-penta-fulvene):toluene: n-hexane = 1:0.125:0.125. Acta Crystallogr E Crystallogr Commun 2017; 73:1823-1826. [PMID: 29250395 PMCID: PMC5730232 DOI: 10.1107/s2056989017015560] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2017] [Accepted: 10/25/2017] [Indexed: 11/10/2022]
Abstract
The crystal structure of a solvated zirconocene penta-fulvene complex with a bulky adamantyl-idene substitution pattern, namely (η5,η1-adamantyl-idene-penta-fulvene)bis-(η5-cyclo-penta-dien-yl)zirconium(IV)-toluene-n-hexane (8/1/1), [Zr(C15H18)(C5H5)2]·0.125C7H8·0.125C6H14, is reported. Reducing zirconocene dichloride with magnesium results in the formation of a low-valent zirconocene reagent that reacts readily with adamantyl-idene-penta-fulvene to give the aforementioned complex. Single crystal X-ray diffraction proves the dianion-like η5:η1 binding mode of the fulvene ligand to the central ZrIV atom. The asymmetric unit contains four independent mol-ecules of [η5:η1-adamantyl-idene-penta-fulvene]bis-[(η5)-cyclo-penta-dien-yl]zirconium(IV), together with half a mol-ecule of toluene disordered with half a mol-ecule of n-hexane (the solvent mol-ecules have no direct influence on the complex). In each of the four complex mol-ecules, the central ZrIV atom has a distorted tetra-hedral coordination environment. The measured crystal consisted of two domains with a refined ratio of 0.77:0.23.
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Affiliation(s)
- Malte Fischer
- Institut für Chemie, Fakultät für Mathematik und Naturwissenschaften, Carl von Ossietzky Universität Oldenburg, 26129 Oldenburg, Germany
| | - Marc Schmidtmann
- Institut für Chemie, Fakultät für Mathematik und Naturwissenschaften, Carl von Ossietzky Universität Oldenburg, 26129 Oldenburg, Germany
| | - Rüdiger Beckhaus
- Institut für Chemie, Fakultät für Mathematik und Naturwissenschaften, Carl von Ossietzky Universität Oldenburg, 26129 Oldenburg, Germany
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106
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Su B, Li Y, Ganguly R, Kinjo R. Ring Expansion, Photoisomerization, and Retrocyclization of 1,4,2-Diazaboroles. Angew Chem Int Ed Engl 2017; 56:14572-14576. [DOI: 10.1002/anie.201708720] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2017] [Indexed: 12/13/2022]
Affiliation(s)
- Bochao Su
- Division of Chemistry and Biological Chemistry; School of Physical and Mathematical Sciences; Nanyang Technological University; Nanyang Link 21 Singapore 637371 Singapore
| | - Yongxin Li
- NTU-CBC Crystallography Facility; Nanyang Technological University; Singapore
| | - Rakesh Ganguly
- NTU-CBC Crystallography Facility; Nanyang Technological University; Singapore
| | - Rei Kinjo
- Division of Chemistry and Biological Chemistry; School of Physical and Mathematical Sciences; Nanyang Technological University; Nanyang Link 21 Singapore 637371 Singapore
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107
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Su B, Li Y, Ganguly R, Kinjo R. Ring Expansion, Photoisomerization, and Retrocyclization of 1,4,2-Diazaboroles. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201708720] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Bochao Su
- Division of Chemistry and Biological Chemistry; School of Physical and Mathematical Sciences; Nanyang Technological University; Nanyang Link 21 Singapore 637371 Singapore
| | - Yongxin Li
- NTU-CBC Crystallography Facility; Nanyang Technological University; Singapore
| | - Rakesh Ganguly
- NTU-CBC Crystallography Facility; Nanyang Technological University; Singapore
| | - Rei Kinjo
- Division of Chemistry and Biological Chemistry; School of Physical and Mathematical Sciences; Nanyang Technological University; Nanyang Link 21 Singapore 637371 Singapore
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108
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Sasikumar P, Prabha B, Chand SS, Aswathy M, Madhukrishnan M, Preethanuj P, Suresh E, Jaroschik F, Radhakrishnan KV. Lewis Acid Promoted Regioselective Double Hydro(hetero)arylation of 6,6′-Dialkyl-Substituted Pentafulvenes: A Facile Approach to Bisindole Derivatives. European J Org Chem 2017. [DOI: 10.1002/ejoc.201700742] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Parameswaran Sasikumar
- Organic Chemistry section; National Institute for Interdisciplinary Science and Technology (CSIR); 695019 Thiruvananthapuram India
| | - Bernard Prabha
- Organic Chemistry section; National Institute for Interdisciplinary Science and Technology (CSIR); 695019 Thiruvananthapuram India
| | - Sarngadharan Sarath Chand
- Organic Chemistry section; National Institute for Interdisciplinary Science and Technology (CSIR); 695019 Thiruvananthapuram India
| | - Maniyamma Aswathy
- Organic Chemistry section; National Institute for Interdisciplinary Science and Technology (CSIR); 695019 Thiruvananthapuram India
| | - Murali Madhukrishnan
- Organic Chemistry section; National Institute for Interdisciplinary Science and Technology (CSIR); 695019 Thiruvananthapuram India
| | - Preethalayam Preethanuj
- Organic Chemistry section; National Institute for Interdisciplinary Science and Technology (CSIR); 695019 Thiruvananthapuram India
| | | | - Florian Jaroschik
- Institut de Chimie Moleculaire de Reims CNRS (UMR 7312); Université de Reims; 51687 Reims Cedex 2 France
| | - Kokkuvayil Vasu Radhakrishnan
- Organic Chemistry section; National Institute for Interdisciplinary Science and Technology (CSIR); 695019 Thiruvananthapuram India
- Academy of Scientific and Innovative Research (AcSIR); Thiruvananthapuram Kerala India
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109
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110
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Electronic properties and aromaticity of substituted diphenylfulvenes in the ground (S0) and excited (T1) states. Struct Chem 2017. [DOI: 10.1007/s11224-017-0995-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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111
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Jaroschik F, Penkhues M, Bahlmann B, Nicolas E, Fischer M, Massicot F, Martinez A, Harakat D, Schmidtmann M, Kokkuvayil Vasu R, Vasse JL, Beckhaus R. Synthesis, Characterization and Reactivity of Formal 20 Electron Zirconocene-Pentafulvene Complexes. Organometallics 2017. [DOI: 10.1021/acs.organomet.7b00213] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Florian Jaroschik
- Institut
de Chimie Moléculaire de Reims, CNRS UMR 7312, Université de Reims, 51687 Reims Cedex 2, France
| | - Manfred Penkhues
- Institut
für Chemie, Carl von Ossietzky Universität Oldenburg, D-26111 Oldenburg, Federal Republic of Germany
| | - Bernard Bahlmann
- Institut
für Chemie, Carl von Ossietzky Universität Oldenburg, D-26111 Oldenburg, Federal Republic of Germany
| | - Emmanuel Nicolas
- Laboratoire
Hétéroéléments et Coordination, Ecole Polytechnique and CNRS, 91128 Palaiseau, France
| | - Malte Fischer
- Institut
für Chemie, Carl von Ossietzky Universität Oldenburg, D-26111 Oldenburg, Federal Republic of Germany
| | - Fabien Massicot
- Institut
de Chimie Moléculaire de Reims, CNRS UMR 7312, Université de Reims, 51687 Reims Cedex 2, France
| | - Agathe Martinez
- Institut
de Chimie Moléculaire de Reims, CNRS UMR 7312, Université de Reims, 51687 Reims Cedex 2, France
| | - Dominique Harakat
- Institut
de Chimie Moléculaire de Reims, CNRS UMR 7312, Université de Reims, 51687 Reims Cedex 2, France
| | - Marc Schmidtmann
- Institut
für Chemie, Carl von Ossietzky Universität Oldenburg, D-26111 Oldenburg, Federal Republic of Germany
| | - Radhakrishnan Kokkuvayil Vasu
- National Institute for Interdisciplinary Science and Technology (CSIR-NIIST), Industrial Estate, P.O. Trivandrum 19, Kerala, India
| | - Jean-Luc Vasse
- Institut
de Chimie Moléculaire de Reims, CNRS UMR 7312, Université de Reims, 51687 Reims Cedex 2, France
| | - Rüdiger Beckhaus
- Institut
für Chemie, Carl von Ossietzky Universität Oldenburg, D-26111 Oldenburg, Federal Republic of Germany
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112
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Zheng H, Xu C, Wang Y, Kang T, Liu X, Lin L, Feng X. Catalytic asymmetric [2+2] cycloaddition between quinones and fulvenes and a subsequent stereoselective isomerization to 2,3-dihydrobenzofurans. Chem Commun (Camb) 2017; 53:6585-6588. [DOI: 10.1039/c7cc03211k] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
A chiral Lewis acid catalyzed enantioselective [2+2] cycloaddition between quinones and fulvenes was reported for the first time. The method afforded a series of [6,4,5]-tricyclic cyclobutane derivatives in good yields with excellent regio- and stereoselectivities. Furthermore, the [2+2] adducts could be easily converted into formal [3+2] adducts efficiently and stereoselectively.
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Affiliation(s)
- Haifeng Zheng
- Key Laboratory of Green Chemistry & Technology
- Ministry of Education
- College of Chemistry
- Sichuan University
- Chengdu 610064
| | - Chaoran Xu
- Key Laboratory of Green Chemistry & Technology
- Ministry of Education
- College of Chemistry
- Sichuan University
- Chengdu 610064
| | - Yan Wang
- Key Laboratory of Green Chemistry & Technology
- Ministry of Education
- College of Chemistry
- Sichuan University
- Chengdu 610064
| | - Tengfei Kang
- Key Laboratory of Green Chemistry & Technology
- Ministry of Education
- College of Chemistry
- Sichuan University
- Chengdu 610064
| | - Xiaohua Liu
- Key Laboratory of Green Chemistry & Technology
- Ministry of Education
- College of Chemistry
- Sichuan University
- Chengdu 610064
| | - Lili Lin
- Key Laboratory of Green Chemistry & Technology
- Ministry of Education
- College of Chemistry
- Sichuan University
- Chengdu 610064
| | - Xiaoming Feng
- Key Laboratory of Green Chemistry & Technology
- Ministry of Education
- College of Chemistry
- Sichuan University
- Chengdu 610064
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