Lipase-Catalyzed Hydrolysis of Some Racemic 1-Acetoxy-2-arylpropanes.
作者:Takashi MATSUMOTO、Yoshio TAKEDA、Eiko IWATA、Mitsuo SAKAMOTO、Takashi ISHIDA
DOI:10.1248/cpb.42.1191
日期:——
Racemic 1-acetoxy-2-phenylpropane (12) and 1-acetoxy-2-(2-naphthyl)propane (33) were hydrolyzed with lipase at 35-36 degrees C for 2 and 24 h to give predominantly (S)-2-phenyl-1-propanol (11) and (S)-2-(2-naphthyl)-1-propanol (32), respectively. However, racemic 1-acetoxy-2-(1-naphthyl)propane (25) was recovered intact even when the reaction was carried out for 240 h. On the other hand, the enantioselectivities
外消旋的1-乙酰氧基-2-苯基丙烷(12)和1-乙酰氧基-2-(2-萘基)丙烷(33)在35-36℃下用脂肪酶水解2小时和24小时,主要得到(S)-2 -苯基-1-丙醇(11)和(S)-2-(2-萘基)-1-丙醇(32)。然而,即使反应进行了240小时,外消旋的1-乙酰氧基-2-(1-萘基)丙烷(25)仍被完整回收。另一方面,对外消旋2-苯基(16),2-(对甲苯基)(20),2-(1-萘基)(28)和2-(2-萘基)(36)衍生物的对映选择性1-乙酰氧基-2-丙醇的含量非常低。