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Biberger T, Hess SN, Leutzsch M, Fürstner A. Hydrogenative Cycloisomerization and Sigmatropic Rearrangement Reactions of Cationic Ruthenium Carbenes Formed by Catalytic Alkyne
gem
‐Hydrogenation. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202113827] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Affiliation(s)
- Tobias Biberger
- Max-Planck-Institut für Kohlenforschung 45470 Mülheim/Ruhr Germany
| | - Stephan N. Hess
- Max-Planck-Institut für Kohlenforschung 45470 Mülheim/Ruhr Germany
| | - Markus Leutzsch
- Max-Planck-Institut für Kohlenforschung 45470 Mülheim/Ruhr Germany
| | - Alois Fürstner
- Max-Planck-Institut für Kohlenforschung 45470 Mülheim/Ruhr Germany
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2
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Biberger T, Hess SN, Leutzsch M, Fürstner A. Hydrogenative Cycloisomerization and Sigmatropic Rearrangement Reactions of Cationic Ruthenium Carbenes Formed by Catalytic Alkyne gem-Hydrogenation. Angew Chem Int Ed Engl 2021; 61:e202113827. [PMID: 34911159 PMCID: PMC9306539 DOI: 10.1002/anie.202113827] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2021] [Indexed: 11/10/2022]
Abstract
gem‐Hydrogenation of propargyl alcohol derivatives with [CpXRu(MeCN)3]PF6 (CpX=substituted cyclopentadienyl) as catalysts affords cationic pianostool ruthenium carbene complexes which are so electrophilic that they attack a tethered olefin to furnish cyclopentene products; cyclopropanation or metathesis do not compete with this novel transformation. If the transient carbenes carry appropriate propargylic substituents, however, they engage in ([2,3]‐sigmatropic) rearrangements to give enol esters (carbonates, carbamates, sulfonates) or alkenyl halides. Both pathways are unprecedented in the vast hydrogenation literature. The proposed mechanistic scenarios are in line with labeling experiments and spectroscopic data; most notably, PHIP NMR spectroscopy (PHIP=parahydrogen induced polarization) provides compelling evidence that the reactions are indeed triggered by highly unorthodox gem‐hydrogenation events.
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Affiliation(s)
- Tobias Biberger
- Max-Planck-Institut für Kohlenforschung: Max-Planck-Institut fur Kohlenforschung, Organometallic Chemistry, GERMANY
| | - Stephan N Hess
- Max-Planck-Institut für Kohlenforschung: Max-Planck-Institut fur Kohlenforschung, Organometallic Chemistry, GERMANY
| | - Markus Leutzsch
- Max-Planck-Institut für Kohlenforschung: Max-Planck-Institut fur Kohlenforschung, NMR Spectroscopy, GERMANY
| | - Alois Fürstner
- Max-Planck-Institut fur Kohlenforschung, Organometallic Chemistry, Kaiser-Wilhelm-Platz 1, 45470, Mülheim/Ruhr, GERMANY
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3
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Padín D, Varela JA, Saá C. Cp*RuCl-Vinyl Carbenes: Two Faces and the Bifunctional Role in Catalytic Processes. Chemistry 2020; 26:7470-7478. [PMID: 32134145 DOI: 10.1002/chem.202000391] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2020] [Indexed: 11/07/2022]
Abstract
Ruthenium vinyl carbenes derived from Cp/Cp*RuCl-based complexes (Cp=cyclopentadiene, Cp*=1,2,3,4,5-pentamethylcyclopentadiene) have been routinely invoked as key intermediates in tandem reactions involving a carbene/alkyne metathesis (CAM). A priori, these intermediates resemble the Grubbs-type family of catalysts, but they exhibit a completely different reactivity pattern that few, if any, other catalytic system can reproduce so far. The reactivity of these species with α-unsubstituted and α-substituted alkynals showcases the peculiarities of these intermediates. Although Z-vinyl dihydrooxazines are preferentially obtained with the former, Z-vinyl epoxypyrrolidines are obtained with the latter. A combination of spectroscopic and computational data now prove that a η3 -coordination mode of the ruthenium vinyl carbene and the presence of a Lewis basic chloride ligand give rise to two markedly different stereoelectronic faces, which are responsible for the unconventional reactivity of these species.
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Affiliation(s)
- Damián Padín
- Centro Singular de Investigación en Química Biolóxica e, Materiais Moleculares (CiQUS), Departamento de Química Orgánica, Universidade de Santiago de Compostela, 15782, Santiago de Compostela, Spain
| | - Jesús A Varela
- Centro Singular de Investigación en Química Biolóxica e, Materiais Moleculares (CiQUS), Departamento de Química Orgánica, Universidade de Santiago de Compostela, 15782, Santiago de Compostela, Spain
| | - Carlos Saá
- Centro Singular de Investigación en Química Biolóxica e, Materiais Moleculares (CiQUS), Departamento de Química Orgánica, Universidade de Santiago de Compostela, 15782, Santiago de Compostela, Spain
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4
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Zhang X, Anderson JC. A Divergent Synthetic Route to the Vallesamidine and Schizozygine Alkaloids: Total Synthesis of (+)‐Vallesamidine and (+)‐14,15‐Dehydrostrempeliopine. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201910593] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Xiangyu Zhang
- Department of ChemistryUniversity College London 20 Gordon Street London WC1H 0AJ UK
| | - James C. Anderson
- Department of ChemistryUniversity College London 20 Gordon Street London WC1H 0AJ UK
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Zhang X, Anderson JC. A Divergent Synthetic Route to the Vallesamidine and Schizozygine Alkaloids: Total Synthesis of (+)-Vallesamidine and (+)-14,15-Dehydrostrempeliopine. Angew Chem Int Ed Engl 2019; 58:18040-18045. [PMID: 31538685 DOI: 10.1002/anie.201910593] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2019] [Indexed: 11/05/2022]
Abstract
The total synthesis of representative members of the schizozygine alkaloids, (+)-vallesamidine and (+)-14,15-dehydrostrempeliopine, were completed from a late-stage divergent intermediate. The synthesis took advantage of efficient nitro-group reactions with the A/B/C ring skeleton constructed concisely on a gram scale through an asymmetric Michael addition, nitro-Mannich/lactamisation, Tsuji-Trost allylation, and intramolecular C-N coupling reaction. Other key features of the synthesis are a novel [1,4] hydride transfer/Mannich-type cyclisation to build ring E and a diastereoselective ring-closing metathesis reaction to construct ring D. This approach gave access to a late-stage C14,C15 alkene divergent intermediate that could be simply transformed into (+)-vallesamidine, (+)-14,15-dehydrostrempeliopine, and potentially other schizozygine alkaloids and unnatural derivatives.
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Affiliation(s)
- Xiangyu Zhang
- Department of Chemistry, University College London, 20 Gordon Street, London, WC1H 0AJ, UK
| | - James C Anderson
- Department of Chemistry, University College London, 20 Gordon Street, London, WC1H 0AJ, UK
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Biberger T, Gordon CP, Leutzsch M, Peil S, Guthertz A, Copéret C, Fürstner A. Alkyne
gem
‐Hydrogenation: Formation of Pianostool Ruthenium Carbene Complexes and Analysis of Their Chemical Character. Angew Chem Int Ed Engl 2019; 58:8845-8850. [DOI: 10.1002/anie.201904255] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2019] [Indexed: 11/06/2022]
Affiliation(s)
- Tobias Biberger
- Max-Planck-Institut für Kohlenforschung 45470 Mülheim/Ruhr Germany
| | - Christopher P. Gordon
- Department of Chemistry and Applied BiosciencesETH Zürich Vladimir-Prelog-Weg 1–5 8093 Zürich Switzerland
| | - Markus Leutzsch
- Max-Planck-Institut für Kohlenforschung 45470 Mülheim/Ruhr Germany
| | - Sebastian Peil
- Max-Planck-Institut für Kohlenforschung 45470 Mülheim/Ruhr Germany
| | | | - Christophe Copéret
- Department of Chemistry and Applied BiosciencesETH Zürich Vladimir-Prelog-Weg 1–5 8093 Zürich Switzerland
| | - Alois Fürstner
- Max-Planck-Institut für Kohlenforschung 45470 Mülheim/Ruhr Germany
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7
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Peil S, Guthertz A, Biberger T, Fürstner A. Hydrogenative Cyclopropanation and Hydrogenative Metathesis. Angew Chem Int Ed Engl 2019; 58:8851-8856. [DOI: 10.1002/anie.201904256] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2019] [Indexed: 01/05/2023]
Affiliation(s)
- Sebastian Peil
- Max-Planck-Institut für Kohlenforschung 45470 Mülheim/Ruhr Germany
| | | | - Tobias Biberger
- Max-Planck-Institut für Kohlenforschung 45470 Mülheim/Ruhr Germany
| | - Alois Fürstner
- Max-Planck-Institut für Kohlenforschung 45470 Mülheim/Ruhr Germany
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8
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Biberger T, Gordon CP, Leutzsch M, Peil S, Guthertz A, Copéret C, Fürstner A. Alkyne
gem
‐Hydrogenation: Formation of Pianostool Ruthenium Carbene Complexes and Analysis of Their Chemical Character. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201904255] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Affiliation(s)
- Tobias Biberger
- Max-Planck-Institut für Kohlenforschung 45470 Mülheim/Ruhr Germany
| | - Christopher P. Gordon
- Department of Chemistry and Applied BiosciencesETH Zürich Vladimir-Prelog-Weg 1–5 8093 Zürich Switzerland
| | - Markus Leutzsch
- Max-Planck-Institut für Kohlenforschung 45470 Mülheim/Ruhr Germany
| | - Sebastian Peil
- Max-Planck-Institut für Kohlenforschung 45470 Mülheim/Ruhr Germany
| | | | - Christophe Copéret
- Department of Chemistry and Applied BiosciencesETH Zürich Vladimir-Prelog-Weg 1–5 8093 Zürich Switzerland
| | - Alois Fürstner
- Max-Planck-Institut für Kohlenforschung 45470 Mülheim/Ruhr Germany
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9
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Peil S, Guthertz A, Biberger T, Fürstner A. Hydrogenative Cyclopropanation and Hydrogenative Metathesis. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201904256] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Affiliation(s)
- Sebastian Peil
- Max-Planck-Institut für Kohlenforschung 45470 Mülheim/Ruhr Germany
| | | | - Tobias Biberger
- Max-Planck-Institut für Kohlenforschung 45470 Mülheim/Ruhr Germany
| | - Alois Fürstner
- Max-Planck-Institut für Kohlenforschung 45470 Mülheim/Ruhr Germany
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10
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Gandamana DA, Wang B, Tejo C, Bolte B, Gagosz F, Chiba S. Alkyl Ethers as Traceless Hydride Donors in Brønsted Acid Catalyzed Intramolecular Hydrogen Atom Transfer. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201801953] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Dhika Aditya Gandamana
- Division of Chemistry and Biological Chemistry School of Physical and Mathematical Sciences Nanyang Technological University Singapore 637371 Singapore
| | - Bin Wang
- Division of Chemistry and Biological Chemistry School of Physical and Mathematical Sciences Nanyang Technological University Singapore 637371 Singapore
| | - Ciputra Tejo
- Division of Chemistry and Biological Chemistry School of Physical and Mathematical Sciences Nanyang Technological University Singapore 637371 Singapore
| | - Benoit Bolte
- Département de Chimie, UMR 7652 and 7653 CNRS Ecole Polytechnique 91128 Palaiseau France
| | - Fabien Gagosz
- Département de Chimie, UMR 7652 and 7653 CNRS Ecole Polytechnique 91128 Palaiseau France
- Department of Chemistry and Biomolecular Sciences University of Ottawa Ottawa K1N 6N5 Canada
| | - Shunsuke Chiba
- Division of Chemistry and Biological Chemistry School of Physical and Mathematical Sciences Nanyang Technological University Singapore 637371 Singapore
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11
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Gandamana DA, Wang B, Tejo C, Bolte B, Gagosz F, Chiba S. Alkyl Ethers as Traceless Hydride Donors in Brønsted Acid Catalyzed Intramolecular Hydrogen Atom Transfer. Angew Chem Int Ed Engl 2018; 57:6181-6185. [PMID: 29575429 DOI: 10.1002/anie.201801953] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2018] [Revised: 03/13/2018] [Indexed: 12/23/2022]
Abstract
A new protocol for the deoxygenation of alcohols and the hydrogenation of alkenes under Brønsted acid catalysis has been developed. The method is based on the use of either a benzyl or isopropyl ether as a traceless hydrogen-atom donor, and involves an intramolecular hydride transfer as a key step, which is achieved in a regio- and stereoselective manner.
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Affiliation(s)
- Dhika Aditya Gandamana
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore, 637371, Singapore
| | - Bin Wang
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore, 637371, Singapore
| | - Ciputra Tejo
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore, 637371, Singapore
| | - Benoit Bolte
- Département de Chimie, UMR 7652 and 7653 CNRS, Ecole Polytechnique, 91128, Palaiseau, France
| | - Fabien Gagosz
- Département de Chimie, UMR 7652 and 7653 CNRS, Ecole Polytechnique, 91128, Palaiseau, France.,Department of Chemistry and Biomolecular Sciences, University of Ottawa, Ottawa, K1N 6N5, Canada
| | - Shunsuke Chiba
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore, 637371, Singapore
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12
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Dey S, De Sarkar S. Synthetic Applications of Vinyl Ruthenium Carbenes Derived from Diazoalkanes and Alkynes. Adv Synth Catal 2017. [DOI: 10.1002/adsc.201700622] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Soumen Dey
- Department of Chemical Sciences; Indian Institute of Science Education and Research Kolkata; Mohanpur 741246 West Bengal India
| | - Suman De Sarkar
- Department of Chemical Sciences; Indian Institute of Science Education and Research Kolkata; Mohanpur 741246 West Bengal India
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13
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Sabbasani VR, Lee H, Xie P, Xia Y, Lee D. Cyclization of Ynamide‐Tethered 1,3,8‐Triynes. Chemistry 2017; 23:8161-8165. [PMID: 28431205 DOI: 10.1002/chem.201701781] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2017] [Indexed: 11/05/2022]
Affiliation(s)
- Venkata R. Sabbasani
- Department of Chemistry University of Illinois at Chicago 845 West Taylor Street Chicago IL 60607 USA
| | - Hyunjin Lee
- Department of Chemistry University of Illinois at Chicago 845 West Taylor Street Chicago IL 60607 USA
| | - Peipei Xie
- College of Chemistry and Materials Engineering Wenzhou University Wenzhou Zhejiang Province 325035 P.R. China
| | - Yuanzhi Xia
- College of Chemistry and Materials Engineering Wenzhou University Wenzhou Zhejiang Province 325035 P.R. China
| | - Daesung Lee
- Department of Chemistry University of Illinois at Chicago 845 West Taylor Street Chicago IL 60607 USA
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14
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Moulin S, Roisnel T, Dérien S. One-Step Ruthenium-Catalysed Transformation of 1,7-Enynes into Strained Bicyclic Amino Esters. European J Org Chem 2016. [DOI: 10.1002/ejoc.201600896] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Solenne Moulin
- Institut des Sciences Chimiques de Rennes - UMR 6226; CNRS - Université de Rennes 1; Campus de Beaulieu 35042 Rennes France
| | - Thierry Roisnel
- Institut des Sciences Chimiques de Rennes - UMR 6226; CNRS - Université de Rennes 1; Campus de Beaulieu 35042 Rennes France
| | - Sylvie Dérien
- Institut des Sciences Chimiques de Rennes - UMR 6226; CNRS - Université de Rennes 1; Campus de Beaulieu 35042 Rennes France
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15
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Sogo H, Iwasawa N. Rhenium(I)-Catalyzed Generation of α,β-Unsaturated Carbene Complex Intermediates from Propargyl Ethers for the Preparation of Cycloheptadiene Derivatives. Angew Chem Int Ed Engl 2016; 55:10057-60. [DOI: 10.1002/anie.201604371] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2016] [Indexed: 12/25/2022]
Affiliation(s)
- Hideyuki Sogo
- Department of Chemistry; Tokyo Institute of Technology; 2-12-1, O-okayama, Meguro-ku Tokyo 152-8551 Japan
| | - Nobuharu Iwasawa
- Department of Chemistry; Tokyo Institute of Technology; 2-12-1, O-okayama, Meguro-ku Tokyo 152-8551 Japan
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16
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Sogo H, Iwasawa N. Rhenium(I)-Catalyzed Generation of α,β-Unsaturated Carbene Complex Intermediates from Propargyl Ethers for the Preparation of Cycloheptadiene Derivatives. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201604371] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Hideyuki Sogo
- Department of Chemistry; Tokyo Institute of Technology; 2-12-1, O-okayama, Meguro-ku Tokyo 152-8551 Japan
| | - Nobuharu Iwasawa
- Department of Chemistry; Tokyo Institute of Technology; 2-12-1, O-okayama, Meguro-ku Tokyo 152-8551 Japan
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17
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Liu K, Zhu C, Min J, Peng S, Xu G, Sun J. Stereodivergent Synthesis of N-Heterocycles by Catalyst-Controlled, Activity-Directed Tandem Annulation of Diazo Compounds with Amino Alkynes. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201507122] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
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18
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Liu K, Zhu C, Min J, Peng S, Xu G, Sun J. Stereodivergent Synthesis of N‐Heterocycles by Catalyst‐Controlled, Activity‐Directed Tandem Annulation of Diazo Compounds with Amino Alkynes. Angew Chem Int Ed Engl 2015; 54:12962-7. [DOI: 10.1002/anie.201507122] [Citation(s) in RCA: 98] [Impact Index Per Article: 10.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2015] [Indexed: 11/05/2022]
Affiliation(s)
- Kai Liu
- School of Pharmaceutical Engineering & Life Science, Changzhou University, Changzhou 213164 (China)
| | - Chenghao Zhu
- School of Pharmaceutical Engineering & Life Science, Changzhou University, Changzhou 213164 (China)
| | - Junxiang Min
- School of Pharmaceutical Engineering & Life Science, Changzhou University, Changzhou 213164 (China)
| | - Shiyong Peng
- School of Pharmaceutical Engineering & Life Science, Changzhou University, Changzhou 213164 (China)
| | - Guangyang Xu
- School of Pharmaceutical Engineering & Life Science, Changzhou University, Changzhou 213164 (China)
| | - Jiangtao Sun
- School of Pharmaceutical Engineering & Life Science, Changzhou University, Changzhou 213164 (China)
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19
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González-Rodríguez C, Suárez JR, Varela JA, Saá C. Nucleophilic Addition of Amines to Ruthenium Carbenes:ortho-(Alkynyloxy)benzylamine Cyclizations towards 1,3-Benzoxazines. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201410284] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
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20
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González-Rodríguez C, Suárez JR, Varela JA, Saá C. Nucleophilic addition of amines to ruthenium carbenes: ortho-(alkynyloxy)benzylamine cyclizations towards 1,3-benzoxazines. Angew Chem Int Ed Engl 2015; 54:2724-8. [PMID: 25640908 DOI: 10.1002/anie.201410284] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2014] [Indexed: 11/09/2022]
Abstract
A new ruthenium-catalyzed cyclization of ortho-(alkynyloxy)benzylamines to dihydro-1,3-benzoxazines is reported. The cyclization is thought to take place via the vinyl ruthenium carbene intermediates which are easily formed from [Cp*RuCl(cod)] and N2 CHSiMe3 . The mild reaction conditions and the efficiency of the procedure allow the easy preparation of a broad range of new 2-vinyl-2-substituted 1,3-benzoxazine derivatives. Rearrangement of an internal C(sp) in the starting material into a tetrasubstituted C(sp(3) ) atom in the final 1,3-benzoxazine is highly remarkable.
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Affiliation(s)
- Carlos González-Rodríguez
- Departamento de Química Orgánica y Centro Singular de Investigación en Química Biológica y Materiales Moleculares (CIQUS), Universidad de Santiago de Compostela, 15782 Santiago de Compostela (Spain) http://www.usc.es/gi1603/saa
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Cambeiro F, López S, Varela JA, Saá C. Vinyl Dihydropyrans and Dihydrooxazines: Cyclizations of Catalytic Ruthenium Carbenes Derived from Alkynals and Alkynones. Angew Chem Int Ed Engl 2014; 53:5959-63. [DOI: 10.1002/anie.201400675] [Citation(s) in RCA: 61] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2014] [Revised: 03/20/2014] [Indexed: 11/08/2022]
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22
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Cambeiro F, López S, Varela JA, Saá C. Vinyl Dihydropyrans and Dihydrooxazines: Cyclizations of Catalytic Ruthenium Carbenes Derived from Alkynals and Alkynones. Angew Chem Int Ed Engl 2014. [DOI: 10.1002/ange.201400675] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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23
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Wang L, Xiao J. Advancement in Cascade [1,n]-Hydrogen Transfer/Cyclization: A Method for Direct Functionalization of Inactive C(sp3)H Bonds. Adv Synth Catal 2014. [DOI: 10.1002/adsc.201301153] [Citation(s) in RCA: 153] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Xia L, Lee YR. Efficient One-Pot Synthesis of Multi-Substituted Dihydrofurans by Ruthenium(II)-Catalyzed [3+2] Cycloaddition of Cyclic or Acyclic Diazodicarbonyl Compounds with Olefins. Adv Synth Catal 2013. [DOI: 10.1002/adsc.201300245] [Citation(s) in RCA: 56] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Archambeau A, Miege F, Meyer C, Cossy J. Highly Efficient Stereoselective Catalytic C(sp3)H Insertions with Donor Rhodium Carbenoids Generated from Cyclopropenes. Angew Chem Int Ed Engl 2012. [DOI: 10.1002/ange.201205913] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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26
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Archambeau A, Miege F, Meyer C, Cossy J. Highly Efficient Stereoselective Catalytic C(sp3)H Insertions with Donor Rhodium Carbenoids Generated from Cyclopropenes. Angew Chem Int Ed Engl 2012; 51:11540-4. [DOI: 10.1002/anie.201205913] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2012] [Indexed: 11/07/2022]
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27
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Barluenga J, Sigüeiro R, Vicente R, Ballesteros A, Tomás M, Rodríguez MA. Gold-Catalyzed Functionalization of Unactivated C(sp3)H Bonds by Hydride Transfer Facilitated by Alkynylspirocyclopropanes. Angew Chem Int Ed Engl 2012. [DOI: 10.1002/ange.201205051] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Barluenga J, Sigüeiro R, Vicente R, Ballesteros A, Tomás M, Rodríguez MA. Gold-Catalyzed Functionalization of Unactivated C(sp3)H Bonds by Hydride Transfer Facilitated by Alkynylspirocyclopropanes. Angew Chem Int Ed Engl 2012; 51:10377-81. [PMID: 22976902 DOI: 10.1002/anie.201205051] [Citation(s) in RCA: 50] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2012] [Indexed: 11/07/2022]
Affiliation(s)
- José Barluenga
- Departamento de Química Orgánica e Inorgánica e Instituto Universitario de Química Organometálica Enrique Moles, Universidad de Oviedo, c/Julián Clavería 8, 33006 Oviedo, Spain.
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Jiao ZW, Zhang SY, He C, Tu YQ, Wang SH, Zhang FM, Zhang YQ, Li H. Organocatalytic Asymmetric Direct C sp 3H Functionalization of Ethers: A Highly Efficient Approach to Chiral Spiroethers. Angew Chem Int Ed Engl 2012; 51:8811-5. [DOI: 10.1002/anie.201204274] [Citation(s) in RCA: 100] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2012] [Indexed: 11/05/2022]
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Jiao ZW, Zhang SY, He C, Tu YQ, Wang SH, Zhang FM, Zhang YQ, Li H. Organocatalytic Asymmetric Direct C sp 3H Functionalization of Ethers: A Highly Efficient Approach to Chiral Spiroethers. Angew Chem Int Ed Engl 2012. [DOI: 10.1002/ange.201204274] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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