申请人:Nippon Mining Co., Ltd.
公开号:US05098602A1
公开(公告)日:1992-03-24
This invention provides a novel halogen-containing ester compound represented by the following general formula (I): ##STR1## (wherein R is an alkyl group, A is selected from a single bond, --O--, --COO-- and --CO--, both of X and Y are halogen atoms or either one of X and Y is a halogen atom and the other is a hydrogen atom, each of m and n is 0 or 1, m+n=0 or 1, each of k and l is an integer of 1 or more, provide k<l), a liquid crystal composition and a light switching element each containing the above compound as well as a novel fluorophenol compound represented by the following general formula (II): ##STR2## (wherein each of k and l is an integer of 1 or more, provided k<l) as an intermediate for the synthesis of the above ester compound and a method of producing the same.
本发明提供了一种新型卤素含量的酯化合物,其通式如下(I):##STR1##(其中,R是烷基,A选自单键,-O-,-COO-和-CO-,X和Y均为卤素原子或X和Y中的一个是卤素原子,另一个是氢原子,m和n均为0或1,m+n=0或1,k和l中的每一个都是1或更多的整数,k<l),以及含有上述化合物的液晶组成物和光开关元件,以及一种新型荧光酚化合物,其通式如下(II):##STR2##(其中,k和l中的每一个都是1或更多的整数,k<l),作为上述酯化合物合成的中间体和其制备方法。