1
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Mu D, Pan S, Wang X, Liao X, Huang Y, Chen J. Enantioselective synthesis of acyclic monohydrosilanes by steric hindrance assisted C-H silylation. Chem Commun (Camb) 2022; 58:7388-7391. [PMID: 35674211 DOI: 10.1039/d2cc02307e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Herein, a rhodium-catalyzed desymmetrization of dihydrosilanes with heterocyclic compounds via intermolecular dehydrogenative C-H silylation is developed. The strategy tolerates a variety of thianaphthene and thiophene derivatives, giving rise to a wide range of silicon-stereogenic acyclic monohydrosilanes. Several rare skeletons featuring bis-silicon-stereogenic centers were also designed to enhance the library's diversity further. Preliminary mechanistic studies reveal that the surrounding spatial environment of the Si-center plays a crucial role in enabling intermolecular C-H silylation preferentially.
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Affiliation(s)
- Delong Mu
- Pingshan Translational Medicine Center, Shenzhen Bay Laboratory, Shenzhen 518118, China.
| | - Shuqiong Pan
- Pingshan Translational Medicine Center, Shenzhen Bay Laboratory, Shenzhen 518118, China.
| | - Xiaoyu Wang
- Pingshan Translational Medicine Center, Shenzhen Bay Laboratory, Shenzhen 518118, China.
| | - Xiaoyun Liao
- Pingshan Translational Medicine Center, Shenzhen Bay Laboratory, Shenzhen 518118, China.
| | - Yong Huang
- Department of Chemistry, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong SAR, China.
| | - Jiean Chen
- Pingshan Translational Medicine Center, Shenzhen Bay Laboratory, Shenzhen 518118, China.
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2
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Wu Y, Wang P. Silicon-Stereogenic Monohydrosilane: Synthesis and Applications. Angew Chem Int Ed Engl 2022; 61:e202205382. [PMID: 35594056 DOI: 10.1002/anie.202205382] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2022] [Indexed: 12/15/2022]
Abstract
Optically active organosilanes have been demonstrated to be versatile chiral reagents in synthetic chemistry since the early seminal contributions by Sommer and Corriu. Among these silicon-containing chiral architectures, monohydrosilanes, which bear a Si-H bond, hold a unique position because of their facile transformations through stereospecific Si-carbon or Si-heteroatom bond-formation reactions. In addition, those compounds have also been leveraged as chiral reagents for alcohol resolution, chiral auxiliaries, mechanistic probes, as well as potential optoelectronic materials. This Minireview comprehensively summarizes the synthesis and synthetic applications of silicon-stereogenic monohydrosilanes, particularly the advances in the transition-metal-catalyzed asymmetric synthesis of this class of functional molecules.
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Affiliation(s)
- Yichen Wu
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, CAS, 345 Lingling Road, Shanghai, 200032, P. R. China
| | - Peng Wang
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, CAS, 345 Lingling Road, Shanghai, 200032, P. R. China.,CAS Key Laboratory of Energy Regulation Materials, Shanghai Institute of Organic Chemistry, CAShcshr1, 345 Lingling Road, Shanghai, 200032, P. R. China.,School of Chemistry and Material Sciences Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, Hangzhou, 310024, China
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3
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Wu Y, Wang P. Silicon‐Stereogenic Monohydrosilane: Synthesis and Applications. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202205382] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Yichen Wu
- Shanghai Institute of Organic Chemistry State Key Laboratory of Organometallic Chemistry 345 Lingling Road 200032 Shanghai CHINA
| | - Peng Wang
- Shanghai Institute of Organic Chemistry State key laboratory of organometallic chemistry 345 Lingling Rd 200032 Shanghai CHINA
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4
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Huang Y, Wu Y, Zhu Z, Zheng S, Ye Z, Peng Q, Wang P. Enantioselective Synthesis of Silicon‐Stereogenic Monohydrosilanes by Rhodium‐Catalyzed Intramolecular Hydrosilylation. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202113052] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Yu‐Hao Huang
- State Key Laboratory of Organometallic Chemistry Shanghai Institute of Organic Chemistry University of Chinese Academy of Sciences, CAS 345 Lingling Road Shanghai 200032 P. R. China
| | - Yichen Wu
- State Key Laboratory of Organometallic Chemistry Shanghai Institute of Organic Chemistry University of Chinese Academy of Sciences, CAS 345 Lingling Road Shanghai 200032 P. R. China
| | - Zile Zhu
- State Key Laboratory and Institute of Elemento-Organic Chemistry and Frontiers Science Center for New Organic Matter College of Chemistry Nankai University Tianjin 300071 P. R. China
| | - Sujuan Zheng
- State Key Laboratory and Institute of Elemento-Organic Chemistry and Frontiers Science Center for New Organic Matter College of Chemistry Nankai University Tianjin 300071 P. R. China
| | - Zihang Ye
- State Key Laboratory of Organometallic Chemistry Shanghai Institute of Organic Chemistry University of Chinese Academy of Sciences, CAS 345 Lingling Road Shanghai 200032 P. R. China
| | - Qian Peng
- State Key Laboratory and Institute of Elemento-Organic Chemistry and Frontiers Science Center for New Organic Matter College of Chemistry Nankai University Tianjin 300071 P. R. China
| | - Peng Wang
- State Key Laboratory of Organometallic Chemistry Shanghai Institute of Organic Chemistry University of Chinese Academy of Sciences, CAS 345 Lingling Road Shanghai 200032 P. R. China
- CAS Key Laboratory of Energy Regulation Materials Shanghai Institute of Organic Chemistry, CAS 345 Lingling Road Shanghai 200032 P. R. China
- School of Chemistry and Material Sciences Hangzhou Institute for Advanced Study University of Chinese Academy of Sciences Hangzhou 310024 China
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5
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Chen Y, Liu W, Yang X. Recent Advances in Kinetic Resolution of Tertiary Alcohols. CHINESE J ORG CHEM 2022. [DOI: 10.6023/cjoc202110009] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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6
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Huang YH, Wu Y, Zhu Z, Zheng S, Ye Z, Peng Q, Wang P. Enantioselective Synthesis of Silicon-Stereogenic Monohydrosilanes by Rhodium-Catalyzed Intramolecular Hydrosilylation. Angew Chem Int Ed Engl 2021; 61:e202113052. [PMID: 34731522 DOI: 10.1002/anie.202113052] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2021] [Indexed: 02/05/2023]
Abstract
Enantiopure monohydrosilanes are versatile chiral reagents for alcohol resolution and mechanistic investigation. Herein, we have demonstrated the asymmetric synthesis of monohydrosilanes via an intramolecular hydrosilylation strategy. This protocol is suitable for the synthesis of five- and six-membered cyclic monohydrosilanes, including a class of chiral oxasilacycles, with excellent diastereo-, regio-, and enantioselectivities. Notably, the catalyst loading could be reduced to 0.1 mol % which makes this one of the most efficient methods to access chiral monohydrosilanes. Mechanistic studies and DFT calculations indicate this Rh-catalyzed intramolecular asymmetric hydrosilylation reaction might proceed via a Chalk-Harrod mechanism, and the enantio-determining step was predicted to be oxidative addition of Si-H bond.
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Affiliation(s)
- Yu-Hao Huang
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, CAS, 345 Lingling Road, Shanghai, 200032, P. R. China
| | - Yichen Wu
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, CAS, 345 Lingling Road, Shanghai, 200032, P. R. China
| | - Zile Zhu
- State Key Laboratory and Institute of Elemento-Organic Chemistry and Frontiers Science Center for New Organic Matter, College of Chemistry, Nankai University, Tianjin, 300071, P. R. China
| | - Sujuan Zheng
- State Key Laboratory and Institute of Elemento-Organic Chemistry and Frontiers Science Center for New Organic Matter, College of Chemistry, Nankai University, Tianjin, 300071, P. R. China
| | - Zihang Ye
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, CAS, 345 Lingling Road, Shanghai, 200032, P. R. China
| | - Qian Peng
- State Key Laboratory and Institute of Elemento-Organic Chemistry and Frontiers Science Center for New Organic Matter, College of Chemistry, Nankai University, Tianjin, 300071, P. R. China
| | - Peng Wang
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, CAS, 345 Lingling Road, Shanghai, 200032, P. R. China.,CAS Key Laboratory of Energy Regulation Materials, Shanghai Institute of Organic Chemistry, CAS, 345 Lingling Road, Shanghai, 200032, P. R. China.,School of Chemistry and Material Sciences, Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, Hangzhou, 310024, China
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7
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Suzuki T, Iwakura M, Nakata K. Highly Efficient Silylative Kinetic Resolution of Racemic
trans
‐2‐Alkyl‐1‐indanols Catalyzed by Chiral Guanidine. ChemistrySelect 2021. [DOI: 10.1002/slct.202103341] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Takeshi Suzuki
- Department of Chemistry Graduate School of Natural Science and Technology Shimane University 1060 Nishikawatsu Matsue Shimane 690-8504 Japan
| | - Manaya Iwakura
- Department of Chemistry Graduate School of Natural Science and Technology Shimane University 1060 Nishikawatsu Matsue Shimane 690-8504 Japan
| | - Kenya Nakata
- Department of Chemistry Graduate School of Natural Science and Technology Shimane University 1060 Nishikawatsu Matsue Shimane 690-8504 Japan
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8
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Yuan W, You L, Lin W, Ke J, Li Y, He C. Asymmetric Synthesis of Silicon-Stereogenic Monohydrosilanes by Dehydrogenative C–H Silylation. Org Lett 2021; 23:1367-1372. [DOI: 10.1021/acs.orglett.1c00029] [Citation(s) in RCA: 37] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
- Wei Yuan
- Shenzhen Grubbs Institute and Department of Chemistry, Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology, Shenzhen, Guangdong 518055, China
| | - Lijun You
- Shenzhen Grubbs Institute and Department of Chemistry, Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology, Shenzhen, Guangdong 518055, China
| | - Weidong Lin
- Shenzhen Grubbs Institute and Department of Chemistry, Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology, Shenzhen, Guangdong 518055, China
| | - Jie Ke
- Shenzhen Grubbs Institute and Department of Chemistry, Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology, Shenzhen, Guangdong 518055, China
| | - Yingzi Li
- Shenzhen Grubbs Institute and Department of Chemistry, Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology, Shenzhen, Guangdong 518055, China
| | - Chuan He
- Shenzhen Grubbs Institute and Department of Chemistry, Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology, Shenzhen, Guangdong 518055, China
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9
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Seliger J, Oestreich M. Dynamic Kinetic Resolution of Alcohols by Enantioselective Silylation Enabled by Two Orthogonal Transition-Metal Catalysts. Angew Chem Int Ed Engl 2021; 60:247-251. [PMID: 33107692 PMCID: PMC7821270 DOI: 10.1002/anie.202010484] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2020] [Revised: 09/28/2020] [Indexed: 12/04/2022]
Abstract
A nonenzymatic dynamic kinetic resolution of acyclic and cyclic benzylic alcohols is reported. The approach merges rapid transition-metal-catalyzed alcohol racemization and enantioselective Cu-H-catalyzed dehydrogenative Si-O coupling of alcohols and hydrosilanes. The catalytic processes are orthogonal, and the racemization catalyst does not promote any background reactions such as the racemization of the silyl ether and its unselective formation. Often-used ruthenium half-sandwich complexes are not suitable but a bifunctional ruthenium pincer complex perfectly fulfills this purpose. By this, enantioselective silylation of racemic alcohol mixtures is achieved in high yields and with good levels of enantioselection.
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Affiliation(s)
- Jan Seliger
- Institut für ChemieTechnische Universität BerlinStrasse des 17. Juni 11510623BerlinGermany
| | - Martin Oestreich
- Institut für ChemieTechnische Universität BerlinStrasse des 17. Juni 11510623BerlinGermany
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10
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Seliger J, Oestreich M. Dynamische kinetische Racematspaltung von Alkoholen mittels enantioselektiver Silylierung ermöglicht durch zwei orthogonale Übergangsmetallkatalysatoren. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202010484] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Jan Seliger
- 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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11
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Ashraf MA, Liu Z, Li C, Zhang D. Recent advances in catalytic silylation of hydroxyl‐bearing compounds: A green technique for protection of alcohols using Si–O bond formations. Appl Organomet Chem 2020. [DOI: 10.1002/aoc.6131] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Muhammad Aqeel Ashraf
- School of Forestry Henan Agricultural University Zhengzhou 450002 China
- School of Environmental Studies China University of Geosciences Wuhan 430074 China
| | - Zhenling Liu
- School of Management Henan University of Technology Zhengzhou 450001 China
| | - Cheng Li
- School of Forestry Henan Agricultural University Zhengzhou 450002 China
| | - Dangquan Zhang
- School of Forestry Henan Agricultural University Zhengzhou 450002 China
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12
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Zhang L, Chu Y, Ma P, Zhao S, Li Q, Chen B, Hong X, Sun J. Visible-light-mediated photocatalytic cross-coupling of acetenyl ketones with benzyl trifluoroborate. Org Biomol Chem 2020; 18:1073-1077. [PMID: 31960883 DOI: 10.1039/c9ob02624j] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
In this report, we describe a simple visible light-triggered Barbier-type reaction by employing acetenyl ketones with benzyl trifluoroborates. Through a radical-radical cross-coupling process, this photocatalytic protocol furnished a wide range of tertiary propargyl alcohols. Mechanistic investigation indicated that proton-coupled electron transfer (PCET) might be involved in the photochemical transformations.
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Affiliation(s)
- Lingchun Zhang
- Department of Pharmacy, Henan Provincial People's Hospital; Zhengzhou University People's Hospital, Zhengzhou, Henan, 450003, P. R. China.
| | - Yanle Chu
- Department of Pharmacy, The Second Affiliated Hospital of Zhengzhou University, 450000, P. R. China
| | - Peizhi Ma
- Department of Pharmacy, Henan Provincial People's Hospital; Zhengzhou University People's Hospital, Zhengzhou, Henan, 450003, P. R. China.
| | - Shujuan Zhao
- Department of Pharmacy, Henan Provincial People's Hospital; Zhengzhou University People's Hospital, Zhengzhou, Henan, 450003, P. R. China.
| | - Qiaoyan Li
- Department of Pharmacy, Henan Provincial People's Hospital; Zhengzhou University People's Hospital, Zhengzhou, Henan, 450003, P. R. China.
| | - Boya Chen
- Department of Pharmacy, Henan Provincial People's Hospital; Zhengzhou University People's Hospital, Zhengzhou, Henan, 450003, P. R. China.
| | - Xuejiao Hong
- Department of Pharmacy, Henan Provincial People's Hospital; Zhengzhou University People's Hospital, Zhengzhou, Henan, 450003, P. R. China.
| | - Jun Sun
- Department of Pharmacy, Henan Provincial People's Hospital; Zhengzhou University People's Hospital, Zhengzhou, Henan, 450003, P. R. China.
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13
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Wang J, Zhang W, Wu P, Huang C, Zheng Y, Zheng WF, Qian H, Ma S. Chiral tertiary propargylic alcohols via Pd-catalyzed carboxylative kinetic resolution. Org Chem Front 2020. [DOI: 10.1039/d0qo01106a] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
A highly efficient Pd/H+-cocatalyzed kinetic resolution reaction of tertiary propargylic alcohols has been reported.
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Affiliation(s)
- Jie Wang
- Research Center for Molecular Recognition and Synthesis
- Department of Chemistry
- Fudan University
- Shanghai 200433
- P. R. China
| | - Wanli Zhang
- Research Center for Molecular Recognition and Synthesis
- Department of Chemistry
- Fudan University
- Shanghai 200433
- P. R. China
| | - Penglin Wu
- Research Center for Molecular Recognition and Synthesis
- Department of Chemistry
- Fudan University
- Shanghai 200433
- P. R. China
| | - Chaofan Huang
- Research Center for Molecular Recognition and Synthesis
- Department of Chemistry
- Fudan University
- Shanghai 200433
- P. R. China
| | - Yangguangyan Zheng
- Research Center for Molecular Recognition and Synthesis
- Department of Chemistry
- Fudan University
- Shanghai 200433
- P. R. China
| | - Wei-Feng Zheng
- Research Center for Molecular Recognition and Synthesis
- Department of Chemistry
- Fudan University
- Shanghai 200433
- P. R. China
| | - Hui Qian
- Research Center for Molecular Recognition and Synthesis
- Department of Chemistry
- Fudan University
- Shanghai 200433
- P. R. China
| | - Shengming Ma
- Research Center for Molecular Recognition and Synthesis
- Department of Chemistry
- Fudan University
- Shanghai 200433
- P. R. China
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14
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Seliger J, Oestreich M. Making the Silylation of Alcohols Chiral: Asymmetric Protection of Hydroxy Groups. Chemistry 2019; 25:9358-9365. [PMID: 30919539 DOI: 10.1002/chem.201900792] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2019] [Indexed: 11/11/2022]
Abstract
The non-enzymatic kinetic resolution of racemic mixtures of alcohols by silylation had been unknown before the turn of the century. This stands in stark contrast to established acylation techniques. The same applies to the related desymmetrization of diols. This might come as a surprise, given the significance of silyl ethers as protecting groups in multistep synthesis of complex molecules. The situation changed after a seminal report by Ishikawa nearly twenty years ago. Since then, enantioselective silylation of alcohols has matured and grown into an independent research field with organocatalytic and transition-metal-catalyzed approaches providing powerful solutions. This Minireview summarizes these recent advances with particular emphasis on the stereoselective dehydrogenative coupling of alcohols and hydrosilanes.
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Affiliation(s)
- Jan Seliger
- 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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15
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Kinetic Resolution of Tertiary Propargylic Alcohols by Enantioselective Cu−H-Catalyzed Si−O Coupling. Angew Chem Int Ed Engl 2019; 58:1970-1974. [DOI: 10.1002/anie.201813229] [Citation(s) in RCA: 45] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2018] [Indexed: 12/25/2022]
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16
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Seliger J, Dong X, Oestreich M. Kinetische Racematspaltung tertiärer Propargylalkohole durch enantioselektive Cu-H-katalysierte Si-O-Kupplung. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201813229] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- Jan Seliger
- Institut für Chemie; Technische Universität Berlin; Straße des 17. Juni 115 10623 Berlin Deutschland
| | - Xichang Dong
- 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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17
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Dong X, Kita Y, Oestreich M. Kinetische Racematspaltung α‐hydroxysubstituierter Oximether durch enantioselektive Cu‐H‐katalysierte Si‐O‐Kupplung. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201802947] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Affiliation(s)
- Xichang Dong
- Institut für ChemieTechnische Universität Berlin Straße des 17. Juni 115 10623 Berlin Deutschland
| | - Yuji Kita
- Institut für ChemieTechnische Universität Berlin Straße des 17. Juni 115 10623 Berlin Deutschland
| | - Martin Oestreich
- Institut für ChemieTechnische Universität Berlin Straße des 17. Juni 115 10623 Berlin Deutschland
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18
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Dong X, Kita Y, Oestreich M. Kinetic Resolution of α‐Hydroxy‐Substituted Oxime Ethers by Enantioselective Cu−H‐Catalyzed Si−O Coupling. Angew Chem Int Ed Engl 2018; 57:10728-10731. [DOI: 10.1002/anie.201802947] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2018] [Indexed: 11/10/2022]
Affiliation(s)
- Xichang Dong
- Institut für ChemieTechnische Universität Berlin Strasse des 17. Juni 115 10623 Berlin Germany
| | - Yuji Kita
- Institut für ChemieTechnische Universität Berlin Strasse des 17. Juni 115 10623 Berlin Germany
| | - Martin Oestreich
- Institut für ChemieTechnische Universität Berlin Strasse des 17. Juni 115 10623 Berlin Germany
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19
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Yoshimatsu S, Yamada A, Nakata K. Silylative Kinetic Resolution of Racemic 1-Indanol Derivatives Catalyzed by Chiral Guanidine. J Org Chem 2017; 83:452-458. [DOI: 10.1021/acs.joc.7b02493] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Shuhei Yoshimatsu
- Department of Material Science,
Interdisciplinary Graduate School of Science and Engineering, Shimane University, 1060 Nishikawatsu Matsue, Shimane 690-8504, Japan
| | - Akira Yamada
- Department of Material Science,
Interdisciplinary Graduate School of Science and Engineering, Shimane University, 1060 Nishikawatsu Matsue, Shimane 690-8504, Japan
| | - Kenya Nakata
- Department of Material Science,
Interdisciplinary Graduate School of Science and Engineering, Shimane University, 1060 Nishikawatsu Matsue, Shimane 690-8504, Japan
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20
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Bai XF, Zou JF, Chen MY, Xu Z, Li L, Cui YM, Zheng ZJ, Xu LW. Lewis-Base-Mediated Diastereoselective Silylations of Alcohols: Synthesis of Silicon-Stereogenic Dialkoxysilanes Controlled by Chiral Aryl BINMOLs. Chem Asian J 2017; 12:1730-1735. [DOI: 10.1002/asia.201700640] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2017] [Indexed: 11/10/2022]
Affiliation(s)
- Xing-Feng Bai
- Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education; Hangzhou Normal University; Hangzhou 311121 P.R. China
- Suzhou Research Institute and State Key Laboratory for Oxo Synthesis and Selective Oxidation, Lanzhou Institute of Chemical Physics; Chinese Academy of Sciences; Lanzhou 730000 P.R. China
| | - Jin-Feng Zou
- Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education; Hangzhou Normal University; Hangzhou 311121 P.R. China
| | - Mu-Yi Chen
- Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education; Hangzhou Normal University; Hangzhou 311121 P.R. China
| | - Zheng Xu
- Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education; Hangzhou Normal University; Hangzhou 311121 P.R. China
| | - Li Li
- Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education; Hangzhou Normal University; Hangzhou 311121 P.R. China
| | - Yu-Ming Cui
- Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education; Hangzhou Normal University; Hangzhou 311121 P.R. China
| | - Zhan-Jiang Zheng
- Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education; Hangzhou Normal University; Hangzhou 311121 P.R. China
| | - Li-Wen Xu
- Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education; Hangzhou Normal University; Hangzhou 311121 P.R. China
- Suzhou Research Institute and State Key Laboratory for Oxo Synthesis and Selective Oxidation, Lanzhou Institute of Chemical Physics; Chinese Academy of Sciences; Lanzhou 730000 P.R. China
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21
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Broad-spectrum kinetic resolution of alcohols enabled by Cu-H-catalysed dehydrogenative coupling with hydrosilanes. Nat Commun 2017; 8:15547. [PMID: 28569754 PMCID: PMC5461486 DOI: 10.1038/ncomms15547] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2017] [Accepted: 04/07/2017] [Indexed: 11/08/2022] Open
Abstract
The enantioselective silylation of racemic alcohols, where one enantiomer reacts faster than the other, is an alternative approach to established enzymatic and non-enzymatic acylation techniques. The existing art is either limited to structurally biased alcohols or requires elaborate catalysts. Simple substrates, such as benzylic and allylic alcohols, with no coordinating functionality in the proximity of the hydroxy group have been challenging in these kinetic resolutions. We report here the identification of a broadly applicable chiral catalyst for the enantioselective dehydrogenative coupling of alcohols and hydrosilanes with both the chiral ligand and the hydrosilane being commercially available. The efficiency of kinetic resolutions is characterized by the selectivity factor, that is, the ratio of the reaction rates of the fast-reacting over the slow-reacting enantiomer. The selectivity factors achieved with the new method are good for acyclic benzylic alcohols (≤170) and high for synthetically usefully cyclic benzylic (≤40.1) and allylic alcohols (≤159). Kinetic resolution of alcohols by silylation is an attractive method to produce enantiopure compounds, but known systems often display limited substrate scope. Here the authors report a copper catalysed enantioselective dehydrogenative silylation of alcohols that have high selectivity across a broad range of substrates.
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22
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Kaya U, Tran UPN, Enders D, Ho J, Nguyen TV. N-Heterocyclic Olefin Catalyzed Silylation and Hydrosilylation Reactions of Hydroxyl and Carbonyl Compounds. Org Lett 2017; 19:1398-1401. [DOI: 10.1021/acs.orglett.7b00306] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Uǧur Kaya
- School
of Chemistry, University of New South Wales, Sydney, NSW 2052, Australia
- Institute
of Organic Chemistry, RWTH Aachen University, Landoltweg 1, 52074 Aachen, Germany
| | - Uyen P. N. Tran
- School
of Chemistry, University of New South Wales, Sydney, NSW 2052, Australia
| | - Dieter Enders
- Institute
of Organic Chemistry, RWTH Aachen University, Landoltweg 1, 52074 Aachen, Germany
| | - Junming Ho
- Institute
of High
Performance Computing, Agency for Science Technology and Research, 1 Fusionopolis Way, #16-16
Connexis North, Singapore 138632
| | - Thanh V. Nguyen
- School
of Chemistry, University of New South Wales, Sydney, NSW 2052, Australia
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Zhang J, Xu JZ, Zheng ZJ, Xu Z, Cui YM, Cao J, Xu LW. Palladium-Catalyzed Desymmetrization of Silacyclobutanes with Alkynes to Silicon-Stereogenic Silanes: A Density Functional Theory Study. Chem Asian J 2016; 11:2867-2875. [PMID: 27325305 DOI: 10.1002/asia.201600709] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2016] [Revised: 06/18/2016] [Indexed: 12/20/2022]
Affiliation(s)
- Jin Zhang
- Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education; Hangzhou Normal University; No. 1378, Wenyi West Road, Science Park of HZNU Hangzhou 311121 China
| | - Jin-Zhou Xu
- Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education; Hangzhou Normal University; No. 1378, Wenyi West Road, Science Park of HZNU Hangzhou 311121 China
| | - Zhan-Jiang Zheng
- Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education; Hangzhou Normal University; No. 1378, Wenyi West Road, Science Park of HZNU Hangzhou 311121 China
| | - Zheng Xu
- Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education; Hangzhou Normal University; No. 1378, Wenyi West Road, Science Park of HZNU Hangzhou 311121 China
| | - Yu-Ming Cui
- Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education; Hangzhou Normal University; No. 1378, Wenyi West Road, Science Park of HZNU Hangzhou 311121 China
| | - Jian Cao
- Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education; Hangzhou Normal University; No. 1378, Wenyi West Road, Science Park of HZNU Hangzhou 311121 China
| | - Li-Wen Xu
- Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education; Hangzhou Normal University; No. 1378, Wenyi West Road, Science Park of HZNU Hangzhou 311121 China
- State Key Laboratory for Oxo Synthesis and Selective Oxidation; Lanzhou Institute of Chemical Physics; Chinese Academy of Sciences; Lanzhou 730000 P.R. China
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Xu LW, Chen Y, Lu Y. Catalytic Silylations of Alcohols: Turning Simple Protecting-Group Strategies into Powerful Enantioselective Synthetic Methods. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/anie.201504127] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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25
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Xu LW, Chen Y, Lu Y. Katalytische Silylierung von Alkoholen: von einfachen Schutzgruppenstrategien zu leistungsfähigen enantioselektiven Synthesemethoden. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201504127] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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26
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Park SY, Lee JW, Song CE. Parts-per-million level loading organocatalysed enantioselective silylation of alcohols. Nat Commun 2015; 6:7512. [PMID: 26085287 PMCID: PMC4557389 DOI: 10.1038/ncomms8512] [Citation(s) in RCA: 69] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2015] [Accepted: 05/13/2015] [Indexed: 11/09/2022] Open
Abstract
The field of organocatalysis has blossomed over the past few decades, becoming an alternative to transition-metal catalysis or even replacing the realm of transition-metal catalysis. However, a truly powerful organocatalyst with a high turnover number (TON) and turnover frequency (TOF) while retaining high enantioselectivity is yet to be discovered. Similar to metal catalysis, extremely low catalyst loading (p.p.m. or p.p.b. levels) is the ultimate goal of the organocatalysis community. Herein we report a remarkable contribution in this context: 1 p.p.m. loading of a simple 1,1′-bi-2-naphthol-based organocatalyst was enough to achieve highly enantioselective silylation reactions of alcohols. The unprecedented TONs and excellent enantioselectivity are ascribed to the robustness of the catalyst and systematic cooperative hydrogen-bonding organocatalysis in a densely confined chiral space. Organocatalytic methods typically do not approach the extremely low loadings that can be achieved with some metal catalysed processes. Here, the authors report a remarkably powerful organocatalyst capable of performing asymmetric silylations with sub parts-per-million level loadings.
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Affiliation(s)
- Sang Yeon Park
- Department of Chemistry, Sungkyunkwan University, 2066, Seobu-ro, Jangan-gu, Suwon-si, Gyeonggi-do 440-746, Korea
| | - Ji-Woong Lee
- Department of Chemistry, Sungkyunkwan University, 2066, Seobu-ro, Jangan-gu, Suwon-si, Gyeonggi-do 440-746, Korea
| | - Choong Eui Song
- Department of Chemistry, Sungkyunkwan University, 2066, Seobu-ro, Jangan-gu, Suwon-si, Gyeonggi-do 440-746, Korea
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27
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Akhani RK, Moore MI, Pribyl JG, Wiskur SL. Linear Free-Energy Relationship and Rate Study on a Silylation-Based Kinetic Resolution: Mechanistic Insights. J Org Chem 2014; 79:2384-96. [DOI: 10.1021/jo402569h] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Affiliation(s)
- Ravish K. Akhani
- University of South Carolina, Columbia, South Carolina 29208, United States
| | - Maggie I. Moore
- University of South Carolina, Columbia, South Carolina 29208, United States
| | - Julia G. Pribyl
- University of South Carolina, Columbia, South Carolina 29208, United States
| | - Sheryl L. Wiskur
- University of South Carolina, Columbia, South Carolina 29208, United States
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28
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Kinetic Resolution of Tertiary Alcohols: Highly Enantioselective Access to 3-Hydroxy-3-Substituted Oxindoles. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201209043] [Citation(s) in RCA: 57] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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29
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Lu S, Poh SB, Siau WY, Zhao Y. Kinetic Resolution of Tertiary Alcohols: Highly Enantioselective Access to 3-Hydroxy-3-Substituted Oxindoles. Angew Chem Int Ed Engl 2013; 52:1731-4. [DOI: 10.1002/anie.201209043] [Citation(s) in RCA: 132] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2012] [Revised: 12/06/2012] [Indexed: 11/08/2022]
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30
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Lee D, Taylor MS. Regioselective silylation of pyranosides using a boronic acid/Lewis base co-catalyst system. Org Biomol Chem 2013; 11:5409-12. [DOI: 10.1039/c3ob40981c] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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31
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Weickgenannt A, Mohr J, Oestreich M. Catalytic enantioselective dehydrogenative Si–O coupling of oxime ether-functionalized alcohols. Tetrahedron 2012. [DOI: 10.1016/j.tet.2011.06.102] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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32
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Sheppard CI, Taylor JL, Wiskur SL. Silylation-based kinetic resolution of monofunctional secondary alcohols. Org Lett 2011; 13:3794-7. [PMID: 21714486 DOI: 10.1021/ol2012617] [Citation(s) in RCA: 58] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The nucleophilic small molecule catalyst (-)-tetramisole was found to catalyze the kinetic resolution of monofunctional secondary alcohols via enantioselective silylation. Optimization of this new methodology allows for selectivity factors up to 25 utilizing commercially available reagents and mild reaction conditions.
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Affiliation(s)
- Cody I Sheppard
- Department of Chemistry and Biochemistry, University of South Carolina, 631 Sumter Street, GSRC 109, Columbia, South Carolina 29208, USA
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33
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Chen XH, Deng Y, Jiang K, Lai GQ, Ni Y, Yang KF, Jiang JX, Xu LW. Neighboring Acetal-Assisted Brønsted-Acid-Catalyzed Si-H Bond Activation: Divergent Synthesis of Functional Siloxanes through Silylation and Hydrolytic Oxidation of Organosilanes. European J Org Chem 2011. [DOI: 10.1002/ejoc.201001532] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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34
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Xu LW, Li L, Lai GQ, Jiang JX. The recent synthesis and application of silicon-stereogenic silanes: A renewed and significant challenge in asymmetric synthesis. Chem Soc Rev 2011; 40:1777-90. [DOI: 10.1039/c0cs00037j] [Citation(s) in RCA: 164] [Impact Index Per Article: 12.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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35
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Čorić I, Müller S, List B. Kinetic Resolution of Homoaldols via Catalytic Asymmetric Transacetalization. J Am Chem Soc 2010; 132:17370-3. [DOI: 10.1021/ja108642s] [Citation(s) in RCA: 294] [Impact Index Per Article: 21.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Affiliation(s)
- Ilija Čorić
- Max-Planck-Institut für Kohlenforschung, Kaiser-Wilhelm-Platz 1, D-45470 Mülheim an der Ruhr, Germany
| | - Steffen Müller
- Max-Planck-Institut für Kohlenforschung, Kaiser-Wilhelm-Platz 1, D-45470 Mülheim an der Ruhr, Germany
| | - Benjamin List
- Max-Planck-Institut für Kohlenforschung, Kaiser-Wilhelm-Platz 1, D-45470 Mülheim an der Ruhr, Germany
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36
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Kim S, Kwon MS, Park J. Silylation of primary alcohols with recyclable ruthenium catalyst and hydrosilanes. Tetrahedron Lett 2010. [DOI: 10.1016/j.tetlet.2010.06.119] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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37
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Weickgenannt A, Mewald M, Muesmann TWT, Oestreich M. Catalytic asymmetric Si-O coupling of simple achiral silanes and chiral donor-functionalized alcohols. Angew Chem Int Ed Engl 2010; 49:2223-6. [PMID: 19967693 DOI: 10.1002/anie.200905561] [Citation(s) in RCA: 69] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Andreas Weickgenannt
- Organisch-Chemisches Institut, Westfälische Wilhelms-Universität Münster, Corrensstrasse 40, 48149 Münster, Germany
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38
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Weickgenannt A, Mewald M, Muesmann T, Oestreich M. Katalytische asymmetrische Si-O-Kupplung einfacher achiraler Silane und chiraler donorfunktionalisierter Alkohole. Angew Chem Int Ed Engl 2010. [DOI: 10.1002/ange.200905561] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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39
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Weickgenannt A, Mewald M, Oestreich M. Asymmetric Si-O coupling of alcohols. Org Biomol Chem 2010; 8:1497-504. [PMID: 20237658 DOI: 10.1039/b925722e] [Citation(s) in RCA: 99] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Stereoselective Si-O couplings are auspicious processes for the synthesis of both chiral alcohols and chiral silanes. Attractive facets of this theme are currently enjoying a renaissance, and the several significant contributions are summarised in this Emerging Area.
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Affiliation(s)
- Andreas Weickgenannt
- Organisch-Chemisches Institut, Westfälische Wilhelms-Universität, Corrensstrasse 40, D-48149 Münster, Germany
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40
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Hog DT, Oestreich M. B(C6F5)3-Catalyzed Reduction of Ketones and Imines Using Silicon-Stereogenic Silanes: Stereoinduction by Single-Point Binding. European J Org Chem 2009. [DOI: 10.1002/ejoc.200900796] [Citation(s) in RCA: 99] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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41
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Schipper D, Rousseaux S, Fagnou K. Kinetic Resolution of Quaternary and Tertiary β-Hydroxy Esters. Angew Chem Int Ed Engl 2009; 48:8343-7. [DOI: 10.1002/anie.200902373] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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42
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Schipper D, Rousseaux S, Fagnou K. Kinetic Resolution of Quaternary and Tertiary β-Hydroxy Esters. Angew Chem Int Ed Engl 2009. [DOI: 10.1002/ange.200902373] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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43
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Weickgenannt A, Oestreich M. Potassiumtert-Butoxide-Catalyzed Dehydrogenative SiO Coupling: Reactivity Pattern and Mechanism of an Underappreciated Alcohol Protection. Chem Asian J 2009; 4:406-10. [DOI: 10.1002/asia.200800426] [Citation(s) in RCA: 60] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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44
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Patel SG, Wiskur SL. Mechanistic investigations of the Mukaiyama aldol reaction as a two part enantioselective reaction. Tetrahedron Lett 2009. [DOI: 10.1016/j.tetlet.2008.12.083] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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45
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Rendler S, Plefka O, Karatas B, Auer G, Fröhlich R, Mück-Lichtenfeld C, Grimme S, Oestreich M. Stereoselective alcohol silylation by dehydrogenative Si-O coupling: scope, limitations, and mechanism of the cu-h-catalyzed non-enzymatic kinetic resolution with silicon-stereogenic silanes. Chemistry 2009; 14:11512-28. [PMID: 19021177 DOI: 10.1002/chem.200801377] [Citation(s) in RCA: 79] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
Ligand-stabilized copper(I)-hydride catalyzes the dehydrogenative Si-O coupling of alcohols and silanes-a process that was found to proceed without racemization at the silicon atom if asymmetrically substituted. The present investigation starts from this pivotal observation since silicon-stereogenic silanes are thereby suitable for the reagent-controlled kinetic resolution of racemic alcohols, in which asymmetry at the silicon atom enables discrimination of enantiomeric alcohols. In this full account, we summarize our efforts to systematically examine this unusual strategy of diastereoselective alcohol silylation. Ligand (sufficient reactivity with moderately electron-rich monophosphines), silane (reasonable diastereocontrol with cyclic silanes having a distinct substitution pattern) as well as substrate identification (chelating donor as a requirement) are introductorily described. With these basic data at hand, the substrate scope was defined employing enantiomerically enriched tert-butyl-substituted 1-silatetraline and highly reactive 1-silaindane. The synthetic part is complemented by the determination of the stereochemical course at the silicon atom in the Si-O coupling step followed by its quantum-chemical analysis thus providing a solid mechanistic picture of this remarkable transformation.
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Affiliation(s)
- Sebastian Rendler
- Organisch-Chemisches Institut, Westfälische Wilhelms-Universität Münster, Corrensstrasse 40, 48149 Münster, Germany
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Steves A, Oestreich M. Facile preparation of CF3-substituted carbinols with an azine donor and subsequent kinetic resolution through stereoselective Si–O coupling. Org Biomol Chem 2009; 7:4464-9. [DOI: 10.1039/b911534j] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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47
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Rendler S, Fröhlich R, Keller M, Oestreich M. Enantio- and Diastereotopos Differentiation in the Palladium(II)-Catalyzed Hydrosilylation of Bicyclo[2.2.1]alkene Scaffolds with Silicon-Stereogenic Silanes. European J Org Chem 2008. [DOI: 10.1002/ejoc.200800107] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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