申请人:Mitsubishi Gas Chemical Company, Inc.
公开号:US05756816A1
公开(公告)日:1998-05-26
A process for the production of a phenol derivative of the formula (2), which comprises subjecting a diester compound of the formula (1) in which a hydroxyl group is protected by an acyl group, to a reaction for removal of protection, wherein the reaction is carried out in the presence of an aliphatic amine as a protection-removal agent, ##STR1## wherein X is hydrogen or fluorine, Y is --CH.sub.3 or --CF.sub.3, Q is an alkyl group having 1 to 4 carbon atoms, p is 0 or 1, m is an integer of 2 to 7, n is an integer of at least 1, and C* is an asymmetric carbon, the process enabling to obtain the phenol derivative of the formula (2) useful as an intermediate for a liquid crystal compound with ease and at high purity.
一种生产苯酚衍生物的方法,包括将一个二酯化合物(式(1))进行处理,其中一个羟基被酰基保护,以去除保护的反应,反应在存在脂肪胺作为去除保护剂的情况下进行,其中X为氢或氟,Y为--CH3或--CF3,Q为具有1至4个碳原子的烷基,p为0或1,m为2至7的整数,n至少为1的整数,C*为一个不对称碳,该方法可轻松且高纯度地获得苯酚衍生物(式(2)),作为液晶化合物中间体。