Lipase-Catalyzed Resolution of Racemic 1-Acyloxy-2-(p-tolyl)propanes.
作者:Takashi MATSUMOTO、Yoshio TAKEDA、Hiromitsu TERAO、Tomoko TAKAHASHI、Makoto WADA
DOI:10.1248/cpb.41.1459
日期:——
The acetate (11), propanoate (12), butanoate (13), 2-methylpropanoate (14), hexanoate (15), decanoate (16), and hexadecanoate (17) of (±)-2-(p-tolyl)-1-propanol (2) were predominantly hydrolyzed with lipase to give (S)-(-)-2-(p-tolyl)-1-propanol (2). However, the 2, 2-dimethylpropanoate (18), benzoate (19), and phenylacetate (20) of (±)-2 were recovered intact even when the reaction was carried out for 100h. From the viewpoints of enentioselectivity and reaction rate, the racemic ester 11 was found to be the most suitable substrate for the optical resolution of (±)-2.
(±)-2-(对甲苯基)-1-丙醇 (2) 的乙酸酯 (11)、丙酸酯 (12)、丁酸酯 (13)、2-甲基丙酸酯 (14)、己酸酯 (15)、癸酸酯 (16) 和十六酸酯 (17) 主要被脂肪酶水解,得到 (S)-(-)-2-(对甲苯基)-1-丙醇 (2)。然而,即使反应进行 100 小时,(±)-2 的 2,2-二甲基丙酸酯 (18)、苯甲酸酯 (19) 和苯乙酸酯 (20) 仍能完整地回收。从烯选择性和反应速率的角度来看,外消旋酯 11 被认为是光学解析 (±)-2 的最合适底物。