A process for preparing silacyclohexane-based liquid crystal compounds of the formula which comprises reacting ketone compounds of the following general formula ##STR1## Ar represents a phenyl or tolyl group, and R represents Ar, a substituted or unsubstituted alkyl group, with an organometal reagent such as a Grignard reagent or an organotitanium, organolithium or organozinc compound, followed by dehydration, oxidation, de-silylation and reduction to obtain silacyclohexane-based liquid crystal compounds of the type mentioned below. ##STR2## wherein Y is halogen and i is a value of 0, 1, 2 or 3, and A represents a substituted phenyl group or tolyl group or a halogen or functional group such as CN, Cl, Br, OCF.sub.3, OCHF.sub.2 etc.
                            一种制备基于
硅环己烷的液晶化合物的方法,其包括将下列一般式的
酮类化合物与有机
金属试剂如Grignard试剂或
有机钛、
有机锂或
有机锌化合物反应,其中Ar代表苯基或
甲苯基,R代表Ar、取代或未取代的烷基,然后进行脱
水、氧化、去除
硅基和还原,以获得下述类型的基于
硅环己烷的液晶化合物。
其中Y为卤素,i为0、1、2或3的值,A代表取代的苯基或
甲苯基或卤素或功能基团,如CN、Cl、Br、OCF.sub.3、OCHF.sub.2等。