1
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Liu P, Peng J, Bai Y, Li J. Siloxane-containing phosphine (oxide) ligands for enhanced catalytic activity of cobalt complexes for hydrosilylation reactions. Org Biomol Chem 2024; 22:3304-3313. [PMID: 38578066 DOI: 10.1039/d4ob00333k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/06/2024]
Abstract
A series of siloxane-containing phosphine (oxide) ligands have been designed and synthesized. These phosphine (oxide) ligands contain silicon atoms, which can impart better solubility in the relevant media, thereby improving certain catalytic performances. The hydrosilylation of olefins catalyzed by these metal phosphine (oxide) complexes has been conducted under mild reaction conditions.
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Affiliation(s)
- Peng Liu
- College of Material, Chemistry and Chemical Engineering, Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education, Key Laboratory of Organosilicon Material Technology of Zhejiang Province, Hangzhou Normal University, Hangzhou 311121, Zhejiang, People's Republic of China.
| | - Jiajian Peng
- College of Material, Chemistry and Chemical Engineering, Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education, Key Laboratory of Organosilicon Material Technology of Zhejiang Province, Hangzhou Normal University, Hangzhou 311121, Zhejiang, People's Republic of China.
| | - Ying Bai
- College of Material, Chemistry and Chemical Engineering, Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education, Key Laboratory of Organosilicon Material Technology of Zhejiang Province, Hangzhou Normal University, Hangzhou 311121, Zhejiang, People's Republic of China.
| | - Jiayun Li
- College of Material, Chemistry and Chemical Engineering, Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education, Key Laboratory of Organosilicon Material Technology of Zhejiang Province, Hangzhou Normal University, Hangzhou 311121, Zhejiang, People's Republic of China.
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2
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Durin G, Romero RM, Godou T, Chauvier C, Thuéry P, Nicolas E, Cantat T. Formoxyboranes as hydroborane surrogates for the catalytic reduction of carbonyls through transfer hydroboration. Catal Sci Technol 2024; 14:1848-1853. [PMID: 38571548 PMCID: PMC10987016 DOI: 10.1039/d3cy01702h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2023] [Accepted: 02/13/2024] [Indexed: 04/05/2024]
Abstract
A new class of Lewis base stabilized formoxyboranes demonstrates the feasibility of catalytic transfer hydroboration. In the presence of a ruthenium catalyst, they have shown broad applicability for reducing carbonyl compounds. Various borylated alcohols are obtained in high selectivity and yields up to 99%, tolerating several functional groups. Computational studies enabled to propose a mechanism for this transformation, revealing the role of the ruthenium catalyst and the absence of hydroborane intermediates.
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Affiliation(s)
- Gabriel Durin
- NIMBE, CEA, CNRS, Université Paris-Saclay, CEA Saclay 91191 Gif-sur-Yvette Cedex France
| | - R Martin Romero
- NIMBE, CEA, CNRS, Université Paris-Saclay, CEA Saclay 91191 Gif-sur-Yvette Cedex France
| | - Timothé Godou
- NIMBE, CEA, CNRS, Université Paris-Saclay, CEA Saclay 91191 Gif-sur-Yvette Cedex France
| | - Clément Chauvier
- NIMBE, CEA, CNRS, Université Paris-Saclay, CEA Saclay 91191 Gif-sur-Yvette Cedex France
| | - Pierre Thuéry
- NIMBE, CEA, CNRS, Université Paris-Saclay, CEA Saclay 91191 Gif-sur-Yvette Cedex France
| | - Emmanuel Nicolas
- NIMBE, CEA, CNRS, Université Paris-Saclay, CEA Saclay 91191 Gif-sur-Yvette Cedex France
| | - Thibault Cantat
- NIMBE, CEA, CNRS, Université Paris-Saclay, CEA Saclay 91191 Gif-sur-Yvette Cedex France
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3
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Guo J, Liu S, Jing J, Fan Y, Fu Y, Liu S, Wang W, Gao L, Song Z. Controllable Si-C Bond Formation from Trihydrosilanes En Route to Synthesis of 1,4-Azasilinanes with Diverse Silyl Functionalities. Org Lett 2023; 25:7428-7433. [PMID: 37791679 DOI: 10.1021/acs.orglett.3c03014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/05/2023]
Abstract
A B(C6F5)3-catalyzed controllable inter/intra-/intermolecular Si-C bond formation process has been developed from trihydrosilane and dienamide with alkenes, anilines, or aryl iodides. A variety of 1,4-azasilinanes have been generated with diverse exo-cyclic heteroleptic disubstitutions on silicon, thereby expanding the range of silaazacyclic rings available for the discovery of silicon-containing drugs.
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Affiliation(s)
- Jiawei Guo
- Shaanxi Key Laboratory of Catalysis, School of Chemistry & Environmental Science, Shaanxi University of Technology, Hanzhong, 723001, People's Republic of China
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu, 610041, People's Republic of China
| | - Shunfa Liu
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu, 610041, People's Republic of China
| | - Jun Jing
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu, 610041, People's Republic of China
| | - Yu Fan
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu, 610041, People's Republic of China
| | - Yingdong Fu
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu, 610041, People's Republic of China
| | - Shiyang Liu
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu, 610041, People's Republic of China
| | - Wanshu Wang
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu, 610041, People's Republic of China
| | - Lu Gao
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu, 610041, People's Republic of China
| | - Zhenlei Song
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu, 610041, People's Republic of China
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4
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Xu L, Shi H. Ruthenium-Catalyzed Activation of Nonpolar C-C Bonds via π-Coordination-Enabled Aromatization. Angew Chem Int Ed Engl 2023; 62:e202307285. [PMID: 37379224 DOI: 10.1002/anie.202307285] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2023] [Revised: 06/26/2023] [Accepted: 06/27/2023] [Indexed: 06/30/2023]
Abstract
Activation of C-C bonds allows editing of molecular skeletons, but methods for selective activation of nonpolar C-C bonds in the absence of a chelation effect or a driving force derived from opening of a strained ring are scarce. Herein, we report a method for ruthenium-catalyzed activation of nonpolar C-C bonds of pro-aromatic compounds by means of π-coordination-enabled aromatization. This method was effective for cleavage of C-C(alkyl) and C-C(aryl) bonds and for ring-opening of spirocyclic compounds, providing an array of benzene-ring-containing products. The isolation of a methyl ruthenium complex intermediate supports a mechanism involving ruthenium-mediated C-C bond cleavage.
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Affiliation(s)
- Lun Xu
- Key Laboratory of Precise Synthesis of Functional Molecules of Zhejiang Province, Department of Chemistry, School of Science and Research Center for Industries of the Future, Westlake University, 600 Dunyu Road, Hangzhou, 310030, Zhejiang Province, China
| | - Hang Shi
- Key Laboratory of Precise Synthesis of Functional Molecules of Zhejiang Province, Department of Chemistry, School of Science and Research Center for Industries of the Future, Westlake University, 600 Dunyu Road, Hangzhou, 310030, Zhejiang Province, China
- Institute of Natural Sciences, Westlake Institute for Advanced Study, 18 Shilongshan Road, Hangzhou, 310024, Zhejiang Province, China
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5
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Li BX, Ishida H, Wang C, Uchiyama M. Visible-Light-Driven Silyl or Germyl Radical Generation via Si-C or Ge-C Bond Homolysis. Org Lett 2023; 25:1765-1770. [PMID: 36883960 DOI: 10.1021/acs.orglett.3c00503] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/09/2023]
Abstract
We report a simple, rapid, and selective protocol for visible-light-driven generation of silyl radicals through photoredox-induced Si-C bond homolysis. Irradiating 3-silyl-1,4-cyclohexadienes with blue light in the presence of a commercially available photocatalyst smoothly generated silyl radicals bearing various substituents within 1 h, and these radicals were trapped by a broad range of alkenes to afford products in good yields. This process is also available for efficient generation of germyl radicals.
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Affiliation(s)
- Bi-Xiao Li
- Graduate School of Pharmaceutical Sciences, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Hiroshi Ishida
- Graduate School of Pharmaceutical Sciences, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Chao Wang
- Graduate School of Pharmaceutical Sciences, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Masanobu Uchiyama
- Graduate School of Pharmaceutical Sciences, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan.,Research Initiative for Supra-Materials, Shinshu University, 4-17-1 Wakasato, Nagano-shi, Nagano 380-8553, Japan
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6
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Nowicki M, Zaranek M, Grzelak M, Pawluć P, Hoffmann M. Mechanism of Silylation of Vinyl Arenes by Hydrodisiloxanes Driven by Stoichiometric Amounts of Sodium Triethylborohydride-A Combined DFT and Experimental Study. Int J Mol Sci 2023; 24:ijms24054924. [PMID: 36902355 PMCID: PMC10003527 DOI: 10.3390/ijms24054924] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2023] [Revised: 02/27/2023] [Accepted: 03/02/2023] [Indexed: 03/08/2023] Open
Abstract
The reactions of vinyl arenes with hydrodisiloxanes in the presence of sodium triethylborohydride were studied using experimental and computational methods. The expected hydrosilylation products were not detected because triethylborohydrides did not exhibit the catalytic activity observed in previous studies; instead, the product of formal silylation with dimethylsilane was identified, and triethylborohydride was consumed in stoichiometric amounts. In this article, the mechanism of the reaction is described in detail, with due consideration given to the conformational freedom of important intermediates and the two-dimensional curvature of the potential energy hypersurface cross sections. A simple way to reestablish the catalytic character of the transformation was identified and explained with reference to its mechanism. The reaction presented here is an example of the application of a simple transition-metal-free catalyst in the synthesis of silylation products, with flammable gaseous reagents replaced by a more convenient silane surrogate.
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Affiliation(s)
- Mateusz Nowicki
- Faculty of Chemistry, Adam Mickiewicz University, Uniwersytetu Poznańskiego 8, 61-614 Poznań, Poland
| | - Maciej Zaranek
- Faculty of Chemistry, Adam Mickiewicz University, Uniwersytetu Poznańskiego 8, 61-614 Poznań, Poland
- Centre for Advanced Technologies, Adam Mickiewicz University, Uniwersytetu Poznańskiego 10, 61-614 Poznań, Poland
| | - Magdalena Grzelak
- Centre for Advanced Technologies, Adam Mickiewicz University, Uniwersytetu Poznańskiego 10, 61-614 Poznań, Poland
| | - Piotr Pawluć
- Faculty of Chemistry, Adam Mickiewicz University, Uniwersytetu Poznańskiego 8, 61-614 Poznań, Poland
- Centre for Advanced Technologies, Adam Mickiewicz University, Uniwersytetu Poznańskiego 10, 61-614 Poznań, Poland
| | - Marcin Hoffmann
- Faculty of Chemistry, Adam Mickiewicz University, Uniwersytetu Poznańskiego 8, 61-614 Poznań, Poland
- Correspondence:
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7
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Denker L, Wullschläger D, Martínez JP, Świerczewski S, Trzaskowski B, Tamm M, Frank R. Cobalt(I)-Catalyzed Transformation of Si–H Bonds: H/D Exchange in Hydrosilanes and Hydrosilylation of Olefins. ACS Catal 2023. [DOI: 10.1021/acscatal.2c06259] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/09/2023]
Affiliation(s)
- Lars Denker
- Institute of Inorganic and Analytical Chemistry, Technische Universität Braunschweig, Hagenring 30, 38106Braunschweig, Germany
| | - Daniela Wullschläger
- Institute of Inorganic and Analytical Chemistry, Technische Universität Braunschweig, Hagenring 30, 38106Braunschweig, Germany
| | - Juan Pablo Martínez
- Centre of New Technologies, University of Warsaw, Banacha 2C, 02-097Warsaw, Poland
| | - Stanisław Świerczewski
- Centre of New Technologies, University of Warsaw, Banacha 2C, 02-097Warsaw, Poland
- College of Inter-faculty Individual Studies in Mathematics and Natural Sciences, University of Warsaw, Banacha 2C, 02-097Warsaw, Poland
| | - Bartosz Trzaskowski
- Centre of New Technologies, University of Warsaw, Banacha 2C, 02-097Warsaw, Poland
| | - Matthias Tamm
- Institute of Inorganic and Analytical Chemistry, Technische Universität Braunschweig, Hagenring 30, 38106Braunschweig, Germany
| | - René Frank
- Institute of Inorganic and Analytical Chemistry, Technische Universität Braunschweig, Hagenring 30, 38106Braunschweig, Germany
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8
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Wang X, Yu ZX, Liu WB. Formal Hydrotrimethylsilylation of Styrenes with Anti-Markovnikov Selectivity Using Hexamethyldisilane. Org Lett 2022; 24:8735-8740. [DOI: 10.1021/acs.orglett.2c03170] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Affiliation(s)
- Xin Wang
- Sauvage Center for Molecular Sciences, Engineering Research Center of Organosilicon Compounds & Materials (Ministry of Education), and College of Chemistry and Molecular Sciences, Wuhan University, 299 Bayi Rd, Wuhan, Hubei, 430072, China
- Beijing National Laboratory of Molecular Sciences, Key Laboratory of Bioorganic Chemistry and Molecular Engineering, College of Chemistry, Peking University, Beijing, 100871, China
| | - Zhi-Xiang Yu
- Beijing National Laboratory of Molecular Sciences, Key Laboratory of Bioorganic Chemistry and Molecular Engineering, College of Chemistry, Peking University, Beijing, 100871, China
| | - Wen-Bo Liu
- Sauvage Center for Molecular Sciences, Engineering Research Center of Organosilicon Compounds & Materials (Ministry of Education), and College of Chemistry and Molecular Sciences, Wuhan University, 299 Bayi Rd, Wuhan, Hubei, 430072, China
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9
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Copper-catalyzed regio- and stereo-selective hydrosilylation of terminal allenes to access (E)-allylsilanes. Nat Commun 2022; 13:3691. [PMID: 35760931 PMCID: PMC9237096 DOI: 10.1038/s41467-022-31458-2] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2022] [Accepted: 06/15/2022] [Indexed: 12/02/2022] Open
Abstract
Regioselectivity and stereoselectivity control in hydrosilylation of terminal allenes is challeging. Although the selective synthesis of vinylsilanes, branched allylsilanes or linear (Z)-allylsilanes have been achieved, transition-metal catalyzed hydrosilylation of terminal allenes to access (E)-allylsilane is difficult. Herein, we report a copper-catalyzed selective hydrosilylation reaction of terminal allenes to access (E)-allylsilanes under mild reaction conditions. The reaction shows broad substrate scope, representing an efficient method to prepare trisubstituted (E)-allylsilanes through hydrosilylation reaction of allenes and can also be applied in the synthesis of disubstituted (E)-allylsilanes. The mechanism study reveals that the E-selectivity is kinetically controlled by the catalyst but not by the thermodynamically isomerization of the (Z)-isomer. Regio- and stereoselective transition-metal catalysed hydrosilylation of terminal allenes to access (E)-allylsilanes are challenging organic transformations. Herein, the authors synthesize (E)-allylsilanes via copper-catalyzed hydrosilylation of terminal allenes.
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10
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Romero RM, Thyagarajan N, Hellou N, Chauvier C, Godou T, Anthore-Dalion L, Cantat T. Silyl formates as hydrosilane surrogates for the transfer hydrosilylation of ketones. Chem Commun (Camb) 2022; 58:6308-6311. [PMID: 35522145 PMCID: PMC9476892 DOI: 10.1039/d2cc00666a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A transfer hydrosilylation of ketones employing silyl formates as hydrosilane surrogates under mild conditions is presented. A total of 24 examples of ketones have been successfully converted to their corresponding silyl ethers with 61-99% yields in the presence of a PNHP-based ruthenium catalyst and silyl formate reagent. The crucial role of the ligand for the transformation is demonstrated.
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Affiliation(s)
- R Martin Romero
- Université Paris-Saclay, CEA, CNRS, NIMBE, 91191 Gif-sur-Yvette, France.
| | - Neethu Thyagarajan
- Université Paris-Saclay, CEA, CNRS, NIMBE, 91191 Gif-sur-Yvette, France.
| | - Nora Hellou
- Université Paris-Saclay, CEA, CNRS, NIMBE, 91191 Gif-sur-Yvette, France.
| | - Clément Chauvier
- Université Paris-Saclay, CEA, CNRS, NIMBE, 91191 Gif-sur-Yvette, France.
| | - Timothé Godou
- Université Paris-Saclay, CEA, CNRS, NIMBE, 91191 Gif-sur-Yvette, France.
| | | | - Thibault Cantat
- Université Paris-Saclay, CEA, CNRS, NIMBE, 91191 Gif-sur-Yvette, France.
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11
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Sakata K. Quantum Chemical Studies of Lewis-Acid Catalyzed Organic Chemical Reactions. J SYN ORG CHEM JPN 2022. [DOI: 10.5059/yukigoseikyokaishi.80.115] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Ken Sakata
- Faculty of Pharmaceutical Sciences, Toho University
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12
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Affiliation(s)
- Xiangqing Feng
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences Beijing 100190 China
- University of Chinese Academy of Sciences Beijing 100049 China
| | - Wei Meng
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences Beijing 100190 China
- University of Chinese Academy of Sciences Beijing 100049 China
| | - Haifeng Du
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences Beijing 100190 China
- University of Chinese Academy of Sciences Beijing 100049 China
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13
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Huang Z, Chen Z, Jiang Y, Li N, Yang S, Wang G, Pan X. Metal-Free Hydrosilylation Polymerization by Merging Photoredox and Hydrogen Atom Transfer Catalysis. J Am Chem Soc 2021; 143:19167-19177. [PMID: 34738793 DOI: 10.1021/jacs.1c09263] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
Organosilicon compounds and polymers have found wide applications as synthetic building blocks and functional materials. Hydrosilylation is a common strategy toward the synthesis of organosilicon compounds and polymers. Although transition-metal-catalyzed hydrosilylation has achieved great advances, the metal-free hydrosilylation polymerization of dienes and bis(silane)s, especially the one suitable for both electron-rich and electron-deficient dienes, is largely lacking. Herein, we report a visible-light-driven metal-free hydrosilylation polymerization of both electron-rich and electron-deficient dienes with bis(silane)s by using the organic photocatalyst and hydrogen atom transfer (HAT) catalyst. We achieved the well-controlled step-growth hydrosilylation polymerizations of the electron-rich diene and bis(silane) monomer due to the selective activation of Si-H bonds by the organic photocatalyst (4CzIPN) and the thiol polarity reversal reagent (HAT 1). For the electron-deficient dienes, hydrosilylation polymerization and self-polymerization occurred simultaneously in the presence of 4CzIPN and aceclidine (HAT 2), providing the opportunity to produce linear, hyperbranched, and network polymers by rationally tuning the concentration of electron-deficient dienes and the ratio of bis(silane)s and dienes to alter the proportion of the two polymerizations. A wide scope of bis(silane)s and dienes furnished polycarbosilanes with high molecular weight, excellent thermal stability, and tunable architectures.
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Affiliation(s)
- Zhujun Huang
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Fudan University, Shanghai 200438, China
| | - Zhe Chen
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Fudan University, Shanghai 200438, China
| | - Yuan Jiang
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Fudan University, Shanghai 200438, China
| | - Ning Li
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Fudan University, Shanghai 200438, China
| | - Shicheng Yang
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Fudan University, Shanghai 200438, China
| | - Guowei Wang
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Fudan University, Shanghai 200438, China
| | - Xiangcheng Pan
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Fudan University, Shanghai 200438, China
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14
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Borane-catalysed S–H insertion reaction of thiophenols and thiols with α-aryl-α-diazoesters. GREEN SYNTHESIS AND CATALYSIS 2021. [DOI: 10.1016/j.gresc.2021.10.001] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
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15
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Hashimoto T, Shiota K, Ishimaru T, Yamaguchi Y. Hydrosilylation of Alkenes Using a Hydrosiloxane as a Surrogate for Me
2
SiH
2
and Catalyzed by a Nickel‐Pincer Complex. European J Org Chem 2021. [DOI: 10.1002/ejoc.202101177] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Toru Hashimoto
- Department of Advanced Materials Chemistry Graduate School of Engineering Yokohama National University 240-8501 Yokohama Kanagawa Japan
- Department of Applied Chemistry Faculty of Engineering Sanyo-Onoda City University 756-0884 Sanyo-Onoda Yamaguchi Japan
| | - Keisuke Shiota
- Department of Advanced Materials Chemistry Graduate School of Engineering Yokohama National University 240-8501 Yokohama Kanagawa Japan
| | - Toshiya Ishimaru
- Department of Advanced Materials Chemistry Graduate School of Engineering Yokohama National University 240-8501 Yokohama Kanagawa Japan
| | - Yoshitaka Yamaguchi
- Department of Advanced Materials Chemistry Graduate School of Engineering Yokohama National University 240-8501 Yokohama Kanagawa Japan
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16
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Li L, Hilt G. Indium Tribromide-Catalysed Transfer-Hydrogenation: Expanding the Scope of the Hydrogenation and of the Regiodivergent DH or HD Addition to Alkenes. Chemistry 2021; 27:11221-11225. [PMID: 34048092 PMCID: PMC8453857 DOI: 10.1002/chem.202101259] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2021] [Indexed: 01/09/2023]
Abstract
The transfer‐hydrogenation as well as the regioselective and regiodivergent addition of H−D from regiospecific deuterated dihydroaromatic compounds to a variety of 1,1‐di‐ and trisubstituted alkenes was realised with InBr3 in dichloro(m)ethane. In comparison with the previously reported BF3⋅Et2O‐catalysed process, electron‐deficient aryl‐substituents can be applied reliably and thereby several restrictions could be lifted, and new types of substrates could be transformed successfully in hydrodeuterogenation as well as deuterohydrogenation transfer‐hydrogenation reactions.
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Affiliation(s)
- Luomo Li
- Institut für Chemie, Oldenburg University, Carl-von-Ossietzky-Str. 9-11, 26111, Oldenburg, Germany
| | - Gerhard Hilt
- Institut für Chemie, Oldenburg University, Carl-von-Ossietzky-Str. 9-11, 26111, Oldenburg, Germany
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17
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Wu B, Wang J, Liu X, Zhu R. Bicyclo[2.2.0]hexene derivatives as a proaromatic platform for group transfer and chemical sensing. Nat Commun 2021; 12:3680. [PMID: 34140512 PMCID: PMC8211693 DOI: 10.1038/s41467-021-24054-3] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2021] [Accepted: 05/26/2021] [Indexed: 12/22/2022] Open
Abstract
Here we report the design, preparation, synthetic utility, and sensing application of a class of proaromatic structures, namely bicyclo[2.2.0]hexene (BCH) derivatives. Building on a valence isomerism concept, they feature modular and easy synthesis as well as high thermal stability, and can be oxidatively activated under mild conditions. New alkyl transfer reactions using BCHs as a radical donor have been developed to showcase the utility of their proaromaticity. Moreover, the redox-triggered valence isomerization of a quinoline-derived BCH led to colorimetric and fluorescent responses toward vapors of electrophilic reagents in solution and solid phase, respectively. This optical response was shown to involve a 1,3-cyclohexadiene structure that possesses an intramolecular charge transfer excited state with interesting aggregation induced emission (AIE) character. Thus, the potential of BCHs has been demonstrated as a versatile platform for the development of new reagents and functional materials. Cyclohexadienes have been widely explored as proaromatic surrogates for group transfer reactions but limited storage stability and difficult accessibility of these compounds limits the application range. Here, the authors present a class of proaromatic bicyclo[2.2.0]hexene derivatives and demonstrate their application in alkyl transfer reactions and sensing applications.
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Affiliation(s)
- Bin Wu
- Beijing National Laboratory for Molecular Sciences (BNLMS), Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, College of Chemistry and Molecular Engineering, Peking University, Beijing, China
| | - Jianing Wang
- Beijing National Laboratory for Molecular Sciences (BNLMS), Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, College of Chemistry and Molecular Engineering, Peking University, Beijing, China
| | - Xingchen Liu
- Beijing National Laboratory for Molecular Sciences (BNLMS), Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, College of Chemistry and Molecular Engineering, Peking University, Beijing, China
| | - Rong Zhu
- Beijing National Laboratory for Molecular Sciences (BNLMS), Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, College of Chemistry and Molecular Engineering, Peking University, Beijing, China.
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18
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Klare HFT, Albers L, Süsse L, Keess S, Müller T, Oestreich M. Silylium Ions: From Elusive Reactive Intermediates to Potent Catalysts. Chem Rev 2021; 121:5889-5985. [PMID: 33861564 DOI: 10.1021/acs.chemrev.0c00855] [Citation(s) in RCA: 107] [Impact Index Per Article: 35.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
The history of silyl cations has all the makings of a drama but with a happy ending. Being considered reactive intermediates impossible to isolate in the condensed phase for decades, their actual characterization in solution and later in solid state did only fuel the discussion about their existence and initially created a lot of controversy. This perception has completely changed today, and silyl cations and their donor-stabilized congeners are now widely accepted compounds with promising use in synthetic chemistry. This review provides a comprehensive summary of the fundamental facts and principles of the chemistry of silyl cations, including reliable ways of their preparation as well as their physical and chemical properties. The striking features of silyl cations are their enormous electrophilicity and as such reactivity as super Lewis acids as well as fluorophilicity. Known applications rely on silyl cations as reactants, stoichiometric reagents, and promoters where the reaction success is based on their steady regeneration over the course of the reaction. Silyl cations can even be discrete catalysts, thereby opening the next chapter of their way into the toolbox of synthetic methodology.
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Affiliation(s)
- Hendrik F T Klare
- Institut für Chemie, Technische Universität Berlin, Strasse des 17 Juni 115, 10623 Berlin, Germany
| | - Lena Albers
- Institut für Chemie, Carl von Ossietzky Universität Oldenburg, Carl von Ossietzky-Strasse 9-11, 26129 Oldenburg, Germany
| | - Lars Süsse
- Institut für Chemie, Technische Universität Berlin, Strasse des 17 Juni 115, 10623 Berlin, Germany
| | - Sebastian Keess
- Institut für Chemie, Technische Universität Berlin, Strasse des 17 Juni 115, 10623 Berlin, Germany
| | - Thomas Müller
- Institut für Chemie, Carl von Ossietzky Universität Oldenburg, Carl von Ossietzky-Strasse 9-11, 26129 Oldenburg, Germany
| | - Martin Oestreich
- Institut für Chemie, Technische Universität Berlin, Strasse des 17 Juni 115, 10623 Berlin, Germany
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19
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de Almeida LD, Wang H, Junge K, Cui X, Beller M. Recent Advances in Catalytic Hydrosilylations: Developments beyond Traditional Platinum Catalysts. Angew Chem Int Ed Engl 2021; 60:550-565. [PMID: 32668079 PMCID: PMC7839722 DOI: 10.1002/anie.202008729] [Citation(s) in RCA: 103] [Impact Index Per Article: 34.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2020] [Indexed: 12/26/2022]
Abstract
Hydrosilylation reactions, which allow the addition of Si-H to C=C/C≡C bonds, are typically catalyzed by homogeneous noble metal catalysts (Pt, Rh, Ir, and Ru). Although excellent activity and selectivity can be obtained, the price, purification, and metal residues of these precious catalysts are problems in the silicone industry. Thus, a strong interest in more sustainable catalysts and for more economic processes exists. In this respect, recently disclosed hydrosilylations using catalysts based on earth-abundant transition metals, for example, Fe, Co, Ni, and Mn, and heterogeneous catalysts (supported nanoparticles and single-atom sites) are noteworthy. This minireview describes the recent advances in this field.
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Affiliation(s)
| | - Hongli Wang
- State Key Laboratory for Oxo Synthesis and Selective OxidationLanzhou Institute of Chemical PhysicsChinese Academy of SciencesNo. 18, Tianshui Middle RoadLanzhou730000China
| | - Kathrin Junge
- Leibniz-Institute for CatalysisAlbert-Einstein-Str. 29a18059RostockGermany
| | - Xinjiang Cui
- State Key Laboratory for Oxo Synthesis and Selective OxidationLanzhou Institute of Chemical PhysicsChinese Academy of SciencesNo. 18, Tianshui Middle RoadLanzhou730000China
| | - Matthias Beller
- Leibniz-Institute for CatalysisAlbert-Einstein-Str. 29a18059RostockGermany
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20
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Kawatsu T, Choi JC, Sato K, Matsumoto K. Facile Synthesis of Sequence-Defined Oligo(Dimethylsiloxane-co-Diphenylsiloxane)s. Macromol Rapid Commun 2020; 42:e2000593. [PMID: 33270333 DOI: 10.1002/marc.202000593] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2020] [Revised: 10/26/2020] [Indexed: 11/07/2022]
Abstract
1,1,3,3,5,5,7,7-Octamethyltetrasiloxane (H MD2 MH ), which is reported to release Me2 SiH2 via a B(C6 F5 )3 -catalyzed redistribution, acts as a good Me2 SiH2 precursor in the B(C6 F5 )3 -catalyzed dehydrocarbonative condensation of alkoxysilanes. A series of oligo(dimethylsiloxane-co-diphenylsiloxane)s that are uniformly sized and sequence-defined at the atomic level are synthesized by a one-pot controlled iteration of a B(C6 F5 )3 -catalyzed dehydrocarbonative condensation of alkoxysilanes with H MD2 MH or Ph2 SiH2 and a B(C6 F5 )3 -catalyzed hydrosilylation of carbonyl compounds, followed by the subsequent B(C6 F5 )3 -catalyzed dehydrogenative condensation of silanols.
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Affiliation(s)
- Takahiro Kawatsu
- National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba Central 5, 1-1-1 Higashi, Tsukuba, Ibaraki, 305-8565, Japan
| | - Jun-Chul Choi
- National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba Central 5, 1-1-1 Higashi, Tsukuba, Ibaraki, 305-8565, Japan
| | - Kazuhiko Sato
- National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba Central 5, 1-1-1 Higashi, Tsukuba, Ibaraki, 305-8565, Japan
| | - Kazuhiro Matsumoto
- National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba Central 5, 1-1-1 Higashi, Tsukuba, Ibaraki, 305-8565, Japan
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21
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Nozawa-Kumada K, Ojima T, Inagi M, Shigeno M, Kondo Y. Di-tert-butyl Peroxide (DTBP)-Mediated Oxysilylation of Unsaturated Carboxylic Acids for the Synthesis of Silyl Lactones. Org Lett 2020; 22:9591-9596. [DOI: 10.1021/acs.orglett.0c03640] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Kanako Nozawa-Kumada
- Graduate School of Pharmaceutical Sciences, Tohoku University, 6-3 Aoba, Aramaki, Aoba-ku, Sendai 980-8578, Japan
| | - Takuto Ojima
- Graduate School of Pharmaceutical Sciences, Tohoku University, 6-3 Aoba, Aramaki, Aoba-ku, Sendai 980-8578, Japan
| | - Moeto Inagi
- Graduate School of Pharmaceutical Sciences, Tohoku University, 6-3 Aoba, Aramaki, Aoba-ku, Sendai 980-8578, Japan
| | - Masanori Shigeno
- Graduate School of Pharmaceutical Sciences, Tohoku University, 6-3 Aoba, Aramaki, Aoba-ku, Sendai 980-8578, Japan
| | - Yoshinori Kondo
- Graduate School of Pharmaceutical Sciences, Tohoku University, 6-3 Aoba, Aramaki, Aoba-ku, Sendai 980-8578, Japan
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22
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Almeida LD, Wang H, Junge K, Cui X, Beller M. Recent Advances in Catalytic Hydrosilylations: Developments beyond Traditional Platinum Catalysts. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202008729] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
| | - Hongli Wang
- State Key Laboratory for Oxo Synthesis and Selective Oxidation Lanzhou Institute of Chemical Physics Chinese Academy of Sciences No. 18, Tianshui Middle Road Lanzhou 730000 China
| | - Kathrin Junge
- Leibniz-Institute for Catalysis Albert-Einstein-Str. 29a 18059 Rostock Germany
| | - Xinjiang Cui
- State Key Laboratory for Oxo Synthesis and Selective Oxidation Lanzhou Institute of Chemical Physics Chinese Academy of Sciences No. 18, Tianshui Middle Road Lanzhou 730000 China
| | - Matthias Beller
- Leibniz-Institute for Catalysis Albert-Einstein-Str. 29a 18059 Rostock Germany
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23
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Li M, Wang T, An Z, Yan R. B(C 6F 5) 3-Catalyzed cyclization of alkynes: direct synthesis of 3-silyl heterocyclic compounds. Chem Commun (Camb) 2020; 56:11953-11956. [PMID: 33033821 DOI: 10.1039/d0cc04314a] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An efficient one-pot strategy for easy access to 3-silyl heterocyclic compounds was developed via a B(C6F5)3-catalyzed cycloaddition reaction of o-(1-alkynyl)(thio)anisoles or o-(1-alkynyl)-N-methylaniline. In this reaction, benzenethiophene, benzofuran or indole skeletons could be constructed by an intermolecular cyclization with diphenylsilane. This protocol elicited moderate-to-good yields with metal-free reaction systems.
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Affiliation(s)
- Mengxing Li
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, Gansu, China.
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24
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Huang Y, Jiang W, Xi X, Li Y, Wang X, Yang M, Zhang Z, Su M, Zhu H. Versatile Reaction Patterns of Phosphanylhydrosilylalkyne with B(C
6
F
5
)
3
: A Remarkable Group Substitution Effect. Eur J Inorg Chem 2020. [DOI: 10.1002/ejic.202000506] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Yanting Huang
- State Key Laboratory of Physical Chemistry of Solid Surfaces College of Chemistry and Chemical Engineering Xiamen University 361005 Xiamen China
| | - Wenjun Jiang
- State Key Laboratory of Physical Chemistry of Solid Surfaces College of Chemistry and Chemical Engineering Xiamen University 361005 Xiamen China
| | - Xin Xi
- State Key Laboratory of Physical Chemistry of Solid Surfaces College of Chemistry and Chemical Engineering Xiamen University 361005 Xiamen China
| | - Yan Li
- Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education Hangzhou Normal University 311121 Hangzhou China
| | - Xiaoping Wang
- State Key Laboratory of Physical Chemistry of Solid Surfaces College of Chemistry and Chemical Engineering Xiamen University 361005 Xiamen China
| | - Ming‐Chung Yang
- Department of Applied Chemistry National Chiayi University 60004 Chiayi Taiwan
| | - Zheng‐Feng Zhang
- Department of Applied Chemistry National Chiayi University 60004 Chiayi Taiwan
| | - Ming‐Der Su
- Department of Applied Chemistry National Chiayi University 60004 Chiayi Taiwan
- Department of Medicinal and Applied Chemistry Kaohsiung Medical University 80708 Kaohsiung Taiwan
| | - Hongping Zhu
- State Key Laboratory of Physical Chemistry of Solid Surfaces College of Chemistry and Chemical Engineering Xiamen University 361005 Xiamen China
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25
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Zhan XY, Zhang H, Dong Y, Yang J, He S, Shi ZC, Tang L, Wang JY. Chemoselective Hydrosilylation of the α,β-Site Double Bond in α,β- and α,β,γ,δ-Unsaturated Ketones Catalyzed by Macrosteric Borane Promoted by Hexafluoro-2-propanol. J Org Chem 2020; 85:6578-6592. [PMID: 32316729 DOI: 10.1021/acs.joc.0c00568] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
The B(C6F5)3-catalyzed chemoselective hydrosilylation of α,β- and α,β,γ,δ-unsaturated ketones into the corresponding non-symmetric ketones in mild reaction conditions is developed. Nearly 55 substrates including those bearing reducible functional groups such as alkynyl, alkenyl, cyano, and aromatic heterocycles are chemoselectively hydrosilylated in good to excellent yields. Isotope-labeling studies revealed that hexafluoro-2-propanol also served as a hydrogen source in the process.
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Affiliation(s)
- Xiao-Yu Zhan
- Chengdu Institute of Organic Chemistry, Chinese Academy of Sciences, Chengdu 610041, PR China.,University of Chinese Academy of Sciences, Beijing 100049, PR China
| | - Hua Zhang
- Chengdu Institute of Organic Chemistry, Chinese Academy of Sciences, Chengdu 610041, PR China.,University of Chinese Academy of Sciences, Beijing 100049, PR China
| | - Yu Dong
- Chengdu Institute of Organic Chemistry, Chinese Academy of Sciences, Chengdu 610041, PR China.,University of Chinese Academy of Sciences, Beijing 100049, PR China
| | - Jian Yang
- Chengdu Institute of Organic Chemistry, Chinese Academy of Sciences, Chengdu 610041, PR China.,University of Chinese Academy of Sciences, Beijing 100049, PR China
| | - Shuai He
- Southwest Minzu University, Chengdu 610041, P. R. China
| | - Zhi-Chuan Shi
- Southwest Minzu University, Chengdu 610041, P. R. China
| | - Lei Tang
- Laboratory of Anaesthesia & Critical Care Medicine, Translational Neuroscience Center and Department of Anaesthesiology, West China Hospital, Sichuan University, Chengdu 610041, P. R. China
| | - Ji-Yu Wang
- Chengdu Institute of Organic Chemistry, Chinese Academy of Sciences, Chengdu 610041, PR China
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26
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Li L, Hilt G. Regiodivergent DH or HD Addition to Alkenes: Deuterohydrogenation versus Hydrodeuterogenation. Org Lett 2020; 22:1628-1632. [DOI: 10.1021/acs.orglett.0c00213] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Luomo Li
- Institut für Chemie, Universität Oldenburg, Carl-von-Ossietzky-Strasse 9-11, D-26111 Oldenburg, Germany
| | - Gerhard Hilt
- Institut für Chemie, Universität Oldenburg, Carl-von-Ossietzky-Strasse 9-11, D-26111 Oldenburg, Germany
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27
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Zhang X, Gao C, Xie X, Liu Y, Ding S. Thioether-Facilitated Iridium-Catalyzed Hydrosilylation of Steric 1,1-Disubstituted Olefins. European J Org Chem 2020. [DOI: 10.1002/ejoc.201901513] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Affiliation(s)
- Xueyan Zhang
- State Key Laboratory of Organic-Inorganic Composites; College of Chemical Engineering; Beijing University of Chemical Technology; North Third Ring Road 15 100029 Beijing P. R. China
| | - Chengpeng Gao
- State Key Laboratory of Organic-Inorganic Composites; College of Chemical Engineering; Beijing University of Chemical Technology; North Third Ring Road 15 100029 Beijing P. R. China
| | - Xingze Xie
- State Key Laboratory of Organic-Inorganic Composites; College of Chemical Engineering; Beijing University of Chemical Technology; North Third Ring Road 15 100029 Beijing P. R. China
| | - Yuanqi Liu
- State Key Laboratory of Organic-Inorganic Composites; College of Chemical Engineering; Beijing University of Chemical Technology; North Third Ring Road 15 100029 Beijing P. R. China
| | - Shengtao Ding
- State Key Laboratory of Organic-Inorganic Composites; College of Chemical Engineering; Beijing University of Chemical Technology; North Third Ring Road 15 100029 Beijing P. R. China
- State Key Laboratory of Molecular Engineering of Polymers; Fudan University; 220 Handan Rd. 200433 Shanghai P. R. China
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28
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Schuhknecht D, Spaniol TP, Maron L, Okuda J. Regioselective Hydrosilylation of Olefins Catalyzed by a Molecular Calcium Hydride Cation. Angew Chem Int Ed Engl 2020; 59:310-314. [PMID: 31609062 PMCID: PMC6972613 DOI: 10.1002/anie.201909585] [Citation(s) in RCA: 39] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2019] [Revised: 10/10/2019] [Indexed: 12/17/2022]
Abstract
Chemo- and regioselectivity are often difficult to control during olefin hydrosilylation catalyzed by d- and f-block metal complexes. The cationic hydride of calcium [CaH]+ stabilized by an NNNN macrocycle was found to catalyze the regioselective hydrosilylation of aliphatic olefins to give anti-Markovnikov products, while aryl-substituted olefins were hydrosilyated with Markovnikov regioselectivity. Ethylene was efficiently hydrosilylated by primary and secondary hydrosilanes to give di- and monoethylated silanes. Aliphatic hydrosilanes were preferred over other commonly employed hydrosilanes: Arylsilanes such as PhSiH3 underwent scrambling reactions promoted by the nucleophilic hydride, while alkoxy- and siloxy-substituted hydrosilanes gave isolable alkoxy and siloxy calcium derivatives.
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Affiliation(s)
- Danny Schuhknecht
- Institute of Inorganic ChemistryRWTH Aachen UniversityLandoltweg 152074AachenGermany
| | - Thomas P. Spaniol
- Institute of Inorganic ChemistryRWTH Aachen UniversityLandoltweg 152074AachenGermany
| | - Laurent Maron
- CNRSINSAUPS, UMR 5215LPCNOUniversité de Toulouse135 avenue de Rangueil31077ToulouseFrance
| | - Jun Okuda
- Institute of Inorganic ChemistryRWTH Aachen UniversityLandoltweg 152074AachenGermany
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29
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Zhou M, Park S, Dang L. Dual reactivity of B(C6F5)3 enables the silylative cascade conversion of N-aryl piperidines to sila-N-heterocycles: DFT calculations. Org Chem Front 2020. [DOI: 10.1039/c9qo01437c] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
A theoretical study reveals that the dual reactivity of B(C6F5)3 enables the unique silylative cascade conversion of N-aryl piperidines to bridged sila-N-heterocycles.
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Affiliation(s)
- Miaomiao Zhou
- Department of Chemistry and Key Laboratory for Preparation and Application of Ordered Structural Materials of Guangdong Province
- Shantou University
- Guangdong 515063
- P. R. China
| | - Sehoon Park
- Department of Chemistry
- Guangdong Technion Israel Institute of Technology
- Shantou 515063
- China
- Technion-Israel Institute of Technology
| | - Li Dang
- Department of Chemistry and Key Laboratory for Preparation and Application of Ordered Structural Materials of Guangdong Province
- Shantou University
- Guangdong 515063
- P. R. China
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30
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Liu ZY, Zhang M, Wang XC. Hydrosilylation-Promoted Furan Diels-Alder Cycloadditions with Stereoselectivity Controlled by the Silyl Group. J Am Chem Soc 2019; 142:581-588. [PMID: 31809027 DOI: 10.1021/jacs.9b11909] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Herein we describe an unprecedented B(C6F5)3-catalyzed cascade reaction of N-allyl-N-furfurylamides involving an initial intramolecular furan Diels-Alder reaction and subsequent ether cleavage. The reaction has a broad substrate scope, even tolerating a trialkyl-substituted olefin as the dienophile, which has not previously been observed with conventional furan Diels-Alder reactions. In addition, the relative configuration of the product can be controlled by the choice of the silyl group: reactions involving Et3SiH and iPr3SiH gave different diastereomers. Control experiments and the computational studies revealed that the steric bulk of the silyl group plays a key role in determining the reaction pathway and thus the relative configuration of the product.
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Affiliation(s)
- Zhi-Yun Liu
- State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry , Nankai University , Tianjin 300071 , China
| | - Ming Zhang
- State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry , Nankai University , Tianjin 300071 , China
| | - Xiao-Chen Wang
- State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry , Nankai University , Tianjin 300071 , China
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31
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Schuhknecht D, Spaniol TP, Maron L, Okuda J. Regioselektive Hydrosilylierung von Olefinen katalysiert durch ein molekulares Calciumhydrid‐Kation. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201909585] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Danny Schuhknecht
- Institut für Anorganische Chemie RWTH Aachen Landoltweg 1 52074 Aachen Deutschland
| | - Thomas P. Spaniol
- Institut für Anorganische Chemie RWTH Aachen Landoltweg 1 52074 Aachen Deutschland
| | - Laurent Maron
- CNRS INSA UPS, UMR 5215 LPCNO Université de Toulouse 135 avenue de Rangueil 31077 Toulouse Frankreich
| | - Jun Okuda
- Institut für Anorganische Chemie RWTH Aachen Landoltweg 1 52074 Aachen Deutschland
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32
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Walker JCL, Oestreich M. Lewis Acid Catalyzed Transfer Hydromethallylation for the Construction of Quaternary Carbon Centers. Angew Chem Int Ed Engl 2019; 58:15386-15389. [PMID: 31449730 PMCID: PMC6856816 DOI: 10.1002/anie.201909852] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2019] [Indexed: 12/18/2022]
Abstract
The design and gram-scale synthesis of a cyclohexa-1,4-diene-based surrogate of isobutene gas is reported. Using the highly electron-deficient Lewis acid B(C6 F5 )3 , application of this surrogate in the hydromethallylation of electron-rich styrene derivatives provided sterically congested quaternary carbon centers. The reaction proceeds by C(sp3 )-C(sp3 ) bond formation at a tertiary carbenium ion that is generated by alkene protonation. The possibility of two concurrent mechanisms is proposed on the basis of mechanistic experiments using a deuterated surrogate.
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Affiliation(s)
- Johannes C. L. Walker
- Institut für ChemieTechnische Universität BerlinStrasse des 17. Juni 11510623BerlinGermany
| | - Martin Oestreich
- Institut für ChemieTechnische Universität BerlinStrasse des 17. Juni 11510623BerlinGermany
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33
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Fritz-Langhals E. Silicon(II) Cation Cp*Si:+ X–: A New Class of Efficient Catalysts in Organosilicon Chemistry. Org Process Res Dev 2019. [DOI: 10.1021/acs.oprd.9b00260] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Elke Fritz-Langhals
- WACKER Chemie AG, Consortium, Zielstattstraße 20-22, D-81379 Munich, Germany
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34
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Walker JCL, Oestreich M. Lewis Säure‐katalysierte Transferhydromethallylierung für den Aufbau quartärer Kohlenstoffzentren. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201909852] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Johannes C. L. Walker
- Institut für Chemie Technische Universität Berlin Straße des 17. Juni 115 10623 Berlin Deutschland
| | - Martin Oestreich
- Institut für Chemie Technische Universität Berlin Straße des 17. Juni 115 10623 Berlin Deutschland
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35
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Garcia L, Dinoi C, Mahon MF, Maron L, Hill MS. Magnesium hydride alkene insertion and catalytic hydrosilylation. Chem Sci 2019; 10:8108-8118. [PMID: 31814958 PMCID: PMC6839609 DOI: 10.1039/c9sc02056j] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2019] [Accepted: 07/20/2019] [Indexed: 11/21/2022] Open
Abstract
The β-diketiminato magnesium hydride, [(BDI)MgH]]2, reacts with alkenes and catalyses their hydrosilylation with PhSiH3.
The dimeric β-diketiminato magnesium hydride, [(BDI)MgH]2, reacts at 80 °C with the terminal alkenes, 1-hexene, 1-octene, 3-phenyl-1-propene and 3,3-dimethyl-butene to provide the respective n-hexyl, n-octyl, 3-phenylpropyl and 3,3-dimethyl-butyl magnesium organometallics. The facility for and the regiodiscrimination of these reactions are profoundly affected by the steric demands of the alkene reagent. Reactions with the phenyl-substituted alkenes, styrene and 1,1-diphenylethene, require a more elevated temperature of 100 °C with styrene providing a mixture of the 2-phenylethyl and 1-phenylethyl products over 7 days. Although the reaction with 1,1-diphenylethene yields the magnesium 1,1-diphenylethyl derivative as the sole reaction product, only 64% conversion was achieved over a 21 day timeframe. Reactions with the α,ω-dienes, 1,5-hexadiene and 1,7-octadiene, provided divergent results. The initial 5-alkenyl magnesium reaction product of the shorter chain diene undergoes 5-exo-trig cyclisation via intramolecular carbomagnesiation to provide a cyclopentylmethyl derivative, which was shown by X-ray diffraction analysis to exist as a three-coordinate monomer. In contrast, 1,7-octadiene provided a mixture of two compounds, a magnesium oct-7-en-1-yl derivative and a dimagnesium-octane-1,4-diide, as a result of single or two-fold activation of the terminal C
Created by potrace 1.16, written by Peter Selinger 2001-2019
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C double bonds. The magnesium hydride was unreactive towards internal alkenes apart from the strained bicycle, norbornene, allowing the characterisation of the resultant three-coordinate magnesium norbornyl derivative by X-ray diffraction analysis. Computational analysis of the reaction between [(BDI)MgH]2 and 1-hexene using density functional theory (DFT) indicated that the initial Mg–H/C
Created by potrace 1.16, written by Peter Selinger 2001-2019
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C insertion process is rate determining and takes place at the intact magnesium hydride dimer. This exothermic reaction (ΔH = –14.1 kcal mol–1) traverses a barrier of 18.9 kcal mol–1 and results in the rupture of the dinuclear structure into magnesium alkyl and hydride species. Although the latter three-coordinate hydride derivative may be prone to redimerisation, it can also provide a further pathway to magnesium alkyl species through its direct reaction with a further equivalent of 1-hexene, which occurs via a lower barrier of 15.1 kcal mol–1. This Mg–H/C
Created by potrace 1.16, written by Peter Selinger 2001-2019
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C insertion reactivity provides the basis for the catalytic hydrosilylation of terminal alkenes with PhSiH3, which proceeds with a preference for the formation of the anti-Markovnikov organosilane product. Further DFT calculations reveal that the catalytic reaction is predicated on a sequence of Mg–H/C
Created by potrace 1.16, written by Peter Selinger 2001-2019
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C insertion and classical Si–H/Mg–C σ-bond metathesis reactions, the latter of which, with a barrier height of 24.9 kcal mol–1, is found to be rate determining.
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Affiliation(s)
- Lucia Garcia
- Department of Chemistry , University of Bath , Claverton Down , Bath , BA2 7AY , UK .
| | - Chiara Dinoi
- Université de Toulouse et CNRS , INSA , UPS , UMR 5215 , LPCNO , 135 Avenue de Rangueil , F-31077 Toulouse , France
| | - Mary F Mahon
- Department of Chemistry , University of Bath , Claverton Down , Bath , BA2 7AY , UK .
| | - Laurent Maron
- Université de Toulouse et CNRS , INSA , UPS , UMR 5215 , LPCNO , 135 Avenue de Rangueil , F-31077 Toulouse , France
| | - Michael S Hill
- Department of Chemistry , University of Bath , Claverton Down , Bath , BA2 7AY , UK .
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Hanna S, Butcher TW, Hartwig JF. Contra-thermodynamic Olefin Isomerization by Chain-Walking Hydrofunctionalization and Formal Retro-hydrofunctionalization. Org Lett 2019; 21:7129-7133. [PMID: 31424215 DOI: 10.1021/acs.orglett.9b02695] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
We report a contra-thermodynamic isomerization of internal olefins to terminal olefins driven by redox reactions and formation of Si-F bonds. This process involves chain-walking hydrosilylation of internal olefins and subsequent formal retro-hydrosilylation. The process rests upon the high activities of platinum hydrosilylation catalysts for isomerization of metal alkyl intermediates and a new, metal-free process for the conversion of alkylsilanes to alkenes. By this approach, 1,2-disubstituted and trisubstituted olefins are converted to terminal olefins.
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Affiliation(s)
- Steven Hanna
- Division of Chemical Sciences, Lawrence Berkeley National Laboratory, and Department of Chemistry, University of California, Berkeley, California 94720, United States
| | - Trevor W Butcher
- Division of Chemical Sciences, Lawrence Berkeley National Laboratory, and Department of Chemistry, University of California, Berkeley, California 94720, United States
| | - John F Hartwig
- Division of Chemical Sciences, Lawrence Berkeley National Laboratory, and Department of Chemistry, University of California, Berkeley, California 94720, United States
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Andrea KA, Kerton FM. Functionalized polycarbonates via triphenylborane catalyzed polymerization-hydrosilylation. RSC Adv 2019; 9:26542-26546. [PMID: 35528568 PMCID: PMC9070434 DOI: 10.1039/c9ra05947d] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2019] [Accepted: 08/16/2019] [Indexed: 11/21/2022] Open
Abstract
Triphenylborane catalyzes the copolymerization and terpolymerization of epoxides and CO2 to yield polycarbonates with excellent dispersity. Via assisted tandem catalysis, these materials could be hydrosilylated in a one-pot fashion yielding modified polymeric materials. Using only a few reagents, materials with glass transition temperatures ranging from 37-110 °C were obtained.
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Affiliation(s)
- Kori A Andrea
- Department of Chemistry, Memorial University of Newfoundland St. John's NL A1B 3X7 Canada
| | - Francesca M Kerton
- Department of Chemistry, Memorial University of Newfoundland St. John's NL A1B 3X7 Canada
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Bhawal BN, Morandi B. Catalytic Isofunctional Reactions—Expanding the Repertoire of Shuttle and Metathesis Reactions. Angew Chem Int Ed Engl 2019; 58:10074-10103. [DOI: 10.1002/anie.201803797] [Citation(s) in RCA: 52] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2018] [Indexed: 12/16/2022]
Affiliation(s)
- Benjamin N. Bhawal
- Max-Planck-Institut für Kohlenforschung 45470 Mülheim an der Ruhr Germany
- Laboratorium für Organische ChemieETH Zürich 8093 Zürich Switzerland
| | - Bill Morandi
- Max-Planck-Institut für Kohlenforschung 45470 Mülheim an der Ruhr Germany
- Laboratorium für Organische ChemieETH Zürich 8093 Zürich Switzerland
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Affiliation(s)
- Weiqiang Chen
- Institut für Chemie, Technische Universität Berlin, Strasse des 17. Juni 115, 10623 Berlin, Germany
| | - Martin Oestreich
- Institut für Chemie, Technische Universität Berlin, Strasse des 17. Juni 115, 10623 Berlin, Germany
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Liu X, Wang Q, Han C, Feng X, Du H. Chiral Frustrated Lewis Pairs Catalyzed Highly Enantioselective Hydrosilylations of Ketones. CHINESE J CHEM 2019. [DOI: 10.1002/cjoc.201900121] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Xiaoqin Liu
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Molecular Recognition and Function, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences Beijing 100190 China
- School of Chemical Science, University of Chinese Academy of Sciences Beijing 100049 China
| | - Qiaotian Wang
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Molecular Recognition and Function, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences Beijing 100190 China
- School of Chemical Science, University of Chinese Academy of Sciences Beijing 100049 China
| | - Caifang Han
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Molecular Recognition and Function, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences Beijing 100190 China
- School of Chemical Science, University of Chinese Academy of Sciences Beijing 100049 China
| | - Xiangqing Feng
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Molecular Recognition and Function, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences Beijing 100190 China
- School of Chemical Science, University of Chinese Academy of Sciences Beijing 100049 China
| | - Haifeng Du
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Molecular Recognition and Function, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences Beijing 100190 China
- School of Chemical Science, University of Chinese Academy of Sciences Beijing 100049 China
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Bhawal BN, Morandi B. Katalytische, isofunktionelle Reaktionen – Erweiterung des Repertoires an Shuttle‐ und Metathesereaktionen. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201803797] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- Benjamin N. Bhawal
- Max-Planck-Institut für Kohlenforschung 45470 Mülheim an der Ruhr Deutschland
- Laboratorium für Organische ChemieETH Zürich 8093 Zürich Schweiz
| | - Bill Morandi
- Max-Planck-Institut für Kohlenforschung 45470 Mülheim an der Ruhr Deutschland
- Laboratorium für Organische ChemieETH Zürich 8093 Zürich Schweiz
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Orecchia P, Yuan W, Oestreich M. Transfer Hydrocyanation of α- and α,β-Substituted Styrenes Catalyzed by Boron Lewis Acids. Angew Chem Int Ed Engl 2019; 58:3579-3583. [DOI: 10.1002/anie.201813853] [Citation(s) in RCA: 43] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2018] [Revised: 12/27/2019] [Indexed: 01/24/2023]
Affiliation(s)
- Patrizio Orecchia
- Institut für Chemie; Technische Universität Berlin; Strasse des 17. Juni 115 10623 Berlin Germany
| | - Weiming Yuan
- Institut für Chemie; Technische Universität Berlin; Strasse des 17. Juni 115 10623 Berlin Germany
| | - Martin Oestreich
- Institut für Chemie; Technische Universität Berlin; Strasse des 17. Juni 115 10623 Berlin Germany
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Orecchia P, Yuan W, Oestreich M. Bor-Lewis-Säure-katalysierte Transferhydrocyanierung α- und α,β-substituierter Styrole. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201813853] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- Patrizio Orecchia
- Institut für Chemie; Technische Universität Berlin; Straße des 17. Juni 115 10623 Berlin Deutschland
| | - Weiming Yuan
- Institut für Chemie; Technische Universität Berlin; Straße des 17. Juni 115 10623 Berlin Deutschland
| | - Martin Oestreich
- Institut für Chemie; Technische Universität Berlin; Straße des 17. Juni 115 10623 Berlin Deutschland
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Chen W, Walker JCL, Oestreich M. Metal-Free Transfer Hydroiodination of C-C Multiple Bonds. J Am Chem Soc 2019; 141:1135-1140. [PMID: 30550280 DOI: 10.1021/jacs.8b12318] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The design and a gram-scale synthesis of a bench-stable cyclohexa-1,4-diene-based surrogate of gaseous hydrogen iodide are described. By initiation with a moderately strong Brønsted acid, hydrogen iodide is transferred from the surrogate onto C-C multiple bonds such as alkynes and allenes without the involvement of free hydrogen iodide. The surrogate fragments into toluene and ethylene, easy-to-remove volatile waste. This hydroiodination reaction avoids precarious handling of hydrogen iodide or hydroiodic acid. By this, a broad range of previously unknown or difficult-to-prepare vinyl iodides can be accessed in stereocontrolled fashion.
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Affiliation(s)
- Weiqiang Chen
- Institut für Chemie , Technische Universität Berlin , Strasse des 17. Juni 115 , 10623 Berlin , Germany
| | - Johannes C L Walker
- Institut für Chemie , Technische Universität Berlin , Strasse des 17. Juni 115 , 10623 Berlin , Germany
| | - Martin Oestreich
- Institut für Chemie , Technische Universität Berlin , Strasse des 17. Juni 115 , 10623 Berlin , Germany
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Tian JJ, Zeng NN, Liu N, Tu XS, Wang XC. Intramolecular Cyclizations of Vinyl-Substituted N,N-Dialkyl Arylamines Enabled by Borane-Assisted Hydride Transfer. ACS Catal 2018. [DOI: 10.1021/acscatal.8b04485] [Citation(s) in RCA: 43] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Jun-Jie Tian
- State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
| | - Ning-Ning Zeng
- State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
| | - Ning Liu
- State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
| | - Xian-Shuang Tu
- State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
| | - Xiao-Chen Wang
- State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
- Collaborative Innovation Center of Chemical Science and Engineering, Nankai University, Tianjin 300071, China
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Bhunia A, Bergander K, Studer A. Cooperative Palladium/Lewis Acid-Catalyzed Transfer Hydrocyanation of Alkenes and Alkynes Using 1-Methylcyclohexa-2,5-diene-1-carbonitrile. J Am Chem Soc 2018; 140:16353-16359. [PMID: 30392374 DOI: 10.1021/jacs.8b10651] [Citation(s) in RCA: 54] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Catalytic transfer hydrocyanation represents a clean and safe alternative to hydrocyanation processes using toxic HCN gas. Such reactions provide access to pharmaceutically important nitrile derivatives starting with alkenes and alkynes. Herein, an efficient and practical cooperative palladium/Lewis acid-catalyzed transfer hydrocyanation of alkenes and alkynes is presented using 1-methylcyclohexa-2,5-diene-1-carbonitrile as a benign and readily available HCN source. A large set of nitrile derivatives (>50 examples) are prepared from both aliphatic and aromatic alkenes with good to excellent anti-Markovnikov selectivity. A range of aliphatic alkenes engage in selective hydrocyanation to provide the corresponding nitriles. The introduced method is useful for chain walking hydrocyanation of internal alkenes to afford terminal nitriles in good regioselectivities. This protocol is also applicable to late-stage modification of bioactive molecules.
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Affiliation(s)
- Anup Bhunia
- Organisch-Chemisches Institut , Westfalische Wilhelms-Universität , Corrensstraβe 40 , 48149 Münster , Germany
| | - Klaus Bergander
- Organisch-Chemisches Institut , Westfalische Wilhelms-Universität , Corrensstraβe 40 , 48149 Münster , Germany
| | - Armido Studer
- Organisch-Chemisches Institut , Westfalische Wilhelms-Universität , Corrensstraβe 40 , 48149 Münster , Germany
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Stepen AJ, Bursch M, Grimme S, Stephan DW, Paradies J. Electrophilic Phosphonium Cation‐Mediated Phosphane Oxide Reduction Using Oxalyl Chloride and Hydrogen. Angew Chem Int Ed Engl 2018; 57:15253-15256. [DOI: 10.1002/anie.201809275] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2018] [Indexed: 12/11/2022]
Affiliation(s)
- Arne J. Stepen
- Department of ChemistryUniversity of Paderborn Warburger Strasse 100 33098 Paderborn Germany
- Department of ChemistryUniversity of Toronto 80 St. George St Toronto Ontario M5S3H6 Canada
| | - Markus Bursch
- Mulliken Center for Theoretical ChemistryUniversity of Bonn Beringstr. 4 53115 Bonn Germany
| | - Stefan Grimme
- Mulliken Center for Theoretical ChemistryUniversity of Bonn Beringstr. 4 53115 Bonn Germany
| | - Douglas W. Stephan
- Department of ChemistryUniversity of Toronto 80 St. George St Toronto Ontario M5S3H6 Canada
| | - Jan Paradies
- Department of ChemistryUniversity of Paderborn Warburger Strasse 100 33098 Paderborn Germany
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Stepen AJ, Bursch M, Grimme S, Stephan DW, Paradies J. Reduktion von Phosphanoxiden mit Oxalylchlorid und Wasserstoff, vermittelt durch ein elektrophiles Phosphoniumkation. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201809275] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Arne J. Stepen
- Department ChemieUniversität Paderborn Warburger Straße 100 33098 Paderborn Deutschland
- Department of ChemistryUniversity of Toronto 80 St. George St Toronto Ontario M5S3H6 Kanada
| | - Markus Bursch
- Mulliken Center for Theoretical ChemistryUniversität Bonn Beringstraße 4 53115 Bonn Deutschland
| | - Stefan Grimme
- Mulliken Center for Theoretical ChemistryUniversität Bonn Beringstraße 4 53115 Bonn Deutschland
| | - Douglas W. Stephan
- Department of ChemistryUniversity of Toronto 80 St. George St Toronto Ontario M5S3H6 Kanada
| | - Jan Paradies
- Department ChemieUniversität Paderborn Warburger Straße 100 33098 Paderborn Deutschland
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Hydrosilane synthesis via catalytic hydrogenolysis of halosilanes using a metal-ligand bifunctional iridium catalyst. J Organomet Chem 2018. [DOI: 10.1016/j.jorganchem.2018.05.024] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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