Nonenzymatic kinetic resolution of racemic 2,2,2-trifluoro-1-aryl ethanol via enantioselective acylation
作者:Qing Xu、Hui Zhou、Xiaohong Geng、Peiran Chen
DOI:10.1016/j.tet.2009.01.058
日期:2009.3
Kinetic resolution of a series of 2,2,2-trifluoro-1-aryl ethanol with (R)-benzotetramisole as the catalyst has been investigated. The result showed that when the aryl group in the substrate was a phenyl (or a phenyl substituted by an electron-donating group) or a naphthyl (an extended phenyl) group, the system could give an s value higher than 20. Preparative KR examples demonstrated the applicability
研究了一系列以(R)-苯并四咪唑为催化剂的2,2,2-三氟-1-芳基乙醇的动力学拆分。结果表明,当底物中的芳基为苯基(或被供电子基团取代的苯基)或萘基(延伸的苯基)时,该体系的s值可大于20。制备KR实例证明该方法在制备一些对映体纯的2,2,2-三氟-1-芳基乙醇或2,2,2-三氟-1-芳基-乙基异丁酸酯中的适用性。