Highly enantioselective dynamic kinetic resolution of alkyl aryl carbinols carrying a trimethylsilyl group with a highly active lipoprotein lipase preparation
摘要:
The kinetic and dynamic kinetic resolution of alkyl aryl carbinols carrying a trimethylsilyl group with a highly active lipase preparation containing lipoprotein lipase, dextrin, and ionic surfactant 1 has been explored. It was found that all the trimethylsilyl-containing substrates were accepted by lipoprotein lipase-dextrin 1 (LPL-D1) with perfect enantioselectivity (E = >200). As a result, the dynamic kinetic resolution of these substrates with LPL-D1 in the presence of a Ru-based racemization catalyst provided single enantiomeric products (>99% ee) with good yields. Furthermore, the dynamic kinetic resolution products were readily desilylated or halodesilylated to yield enantiopure alkyl aryl carbinols. Thus a useful protocol for the highly enantioselective synthesis of alkyl aryl carbinols, particularly those carrying a long alkyl chain (C-6-C-10) has been established. (C) 2015 Elsevier Ltd. All rights reserved.
Highly enantioselective dynamic kinetic resolution of alkyl aryl carbinols carrying a trimethylsilyl group with a highly active lipoprotein lipase preparation
摘要:
The kinetic and dynamic kinetic resolution of alkyl aryl carbinols carrying a trimethylsilyl group with a highly active lipase preparation containing lipoprotein lipase, dextrin, and ionic surfactant 1 has been explored. It was found that all the trimethylsilyl-containing substrates were accepted by lipoprotein lipase-dextrin 1 (LPL-D1) with perfect enantioselectivity (E = >200). As a result, the dynamic kinetic resolution of these substrates with LPL-D1 in the presence of a Ru-based racemization catalyst provided single enantiomeric products (>99% ee) with good yields. Furthermore, the dynamic kinetic resolution products were readily desilylated or halodesilylated to yield enantiopure alkyl aryl carbinols. Thus a useful protocol for the highly enantioselective synthesis of alkyl aryl carbinols, particularly those carrying a long alkyl chain (C-6-C-10) has been established. (C) 2015 Elsevier Ltd. All rights reserved.
Hexaalkylphenylethanes. IV. Preparation of Some Alkylbromobenzenes<sup>1</sup>
作者:J. H. Brown、C. S. Marvel
DOI:10.1021/ja01286a005
日期:1937.7
Highly enantioselective dynamic kinetic resolution of alkyl aryl carbinols carrying a trimethylsilyl group with a highly active lipoprotein lipase preparation
作者:Jeonghun Cho、Jusuk Lee、Jaiwook Park、Mahn-Joo Kim
DOI:10.1016/j.tetasy.2015.06.010
日期:2015.8
The kinetic and dynamic kinetic resolution of alkyl aryl carbinols carrying a trimethylsilyl group with a highly active lipase preparation containing lipoprotein lipase, dextrin, and ionic surfactant 1 has been explored. It was found that all the trimethylsilyl-containing substrates were accepted by lipoprotein lipase-dextrin 1 (LPL-D1) with perfect enantioselectivity (E = >200). As a result, the dynamic kinetic resolution of these substrates with LPL-D1 in the presence of a Ru-based racemization catalyst provided single enantiomeric products (>99% ee) with good yields. Furthermore, the dynamic kinetic resolution products were readily desilylated or halodesilylated to yield enantiopure alkyl aryl carbinols. Thus a useful protocol for the highly enantioselective synthesis of alkyl aryl carbinols, particularly those carrying a long alkyl chain (C-6-C-10) has been established. (C) 2015 Elsevier Ltd. All rights reserved.