作者:Ahmed Kamal、Mahendra Sandbhor、Kaleem Ahmed、S.F. Adil、Ahmad Ali Shaik
DOI:10.1016/j.tetasy.2003.09.035
日期:2003.12
A new practical method for the enzymatic synthesis of 1,2-diols has been developed by employing a lipase catalyzed one-pot transesterification protocol. A series of substituted α-acetoxyphenylethanones 3a–g have been reduced to the corresponding alcohols under mild conditions employing sodium borohydride and moist neutral alumina, and further subjected for lipase catalyzed irreversible transesterification
通过采用脂肪酶催化的一锅酯交换反应方案,已开发出一种新的实用的酶促合成1,2-二醇的方法。在温和的条件下,使用硼氢化钠和潮湿的中性氧化铝将一系列取代的α-乙酰氧基苯乙酮3a - g还原为相应的醇,并在同一罐中进一步进行脂肪酶催化的不可逆酯交换反应,得到单乙酸酯和双乙酸酯二醇(R) - 4和(小号) - 5,其在水解时得到终端1,2-二醇,(- [R )-和(小号) - 6高对映体过量。