Kinetic resolution of fluorinated propargyl alcohols by lipase-catalyzed enantioselective transesterification
作者:Sung-Jin Ko、Jung Yun Lim、Nan Young Jeon、Keehoon Won、Deok-Chan Ha、Bum Tae Kim、Hyuk Lee
DOI:10.1016/j.tetasy.2009.03.041
日期:2009.6
In order to obtain optically active fluorinated propargyl alcohols, a lipase-catalyzed kinetic resolution has been carried out. The effect of lipase types, organic solvents, reaction temperature, and acyl donors was examined in the lipase-catalyzed transesterification of 1,1,1-trifluoro-4-phenyl-3-butyn-2-ol. Various enantiomerically pure fluorinated propargyl alcohols have been successfully prepared
为了获得光学活性的氟化炔丙醇,已经进行了脂肪酶催化的动力学拆分。在脂肪酶催化的1,1,1-三氟-4-苯基-3-丁炔-2-醇的酯酶催化酯交换反应中研究了脂肪酶类型,有机溶剂,反应温度和酰基供体的影响。各种对映体纯的氟化炔丙基醇已在良好对映体过量(> 84%)已经成功地制备通过与丁酸乙烯酯的Novozym 435催化的酯交换在60℃下在Ñ正己烷。在某些情况下,对映体纯度极佳(> 99%ee)。