Synthesis of new optically pure tetrabromobenzotriazole derivatives via lipase-catalyzed transesterification
作者:Adam M. Wawro、Monika Wielechowska、Maria Bretner
DOI:10.1016/j.molcatb.2012.10.013
日期:2013.3
An efficient and convenient approach to synthesis of new, enantiopure hydroxyalkyl derivatives of 4,5,6,7-tetrabromo-1H-benzotriazole (TBBt) has been developed. Prochiral ketones synthesized through alkylation of TBBt were reduced to racemic secondary alcohols, which were separated by kinetic resolution carried out by lipase-catalyzed transesterification. After optimization of solvent, lipase and acyl
已经开发了一种有效且方便的方法来合成新的对映纯的4,5,6,7-四溴-1 H-苯并三唑(TBBt)对映体羟烷基衍生物。通过TBBt烷基化合成的前手性酮还原为外消旋仲醇,通过脂肪酶催化的酯交换反应进行动力学拆分将其分离。优化溶剂,脂肪酶和酰基供体基团后,使用荧光假单胞菌的 脂肪酶Amano AK在叔丁基甲基醚中获得最高的对映选择性因子(E > 200)和光学纯度(> 99%)。