申请人:Ricoh Company, Ltd.
公开号:US05227512A1
公开(公告)日:1993-07-13
An optically active stilbene compound of formula (I): ##STR1## wherein R is an alkoxy group with 20 or less carbon atoms; n is an integer of 1 or 2; and R* is an optically active group, a substituted benzylphosphonate compound of formula (II) serving as an intermediate for preparing the above active stilbene compound, ##STR2## wherein X represents ##STR3## R' is an alkyl group having 1 to 5 carbon atoms, or an unsubstituted or substituted aryl group; and R* is the same as in formula (I), a method of producing the optically active stilbene compound of formula (I), and a liquid crystal composition containing the optically active stilbene compound of formula (I) are disclosed.
一种具有以下化学式(I)的光学活性的stilbene化合物:其中R是一个具有20个或更少碳原子的烷氧基团;n是1或2的整数;R*是一个光学活性基团,一种具有以下化学式(II)的取代苄基磷酸酯化合物作为制备上述活性stilbene化合物的中间体:其中X代表;R'是具有1至5个碳原子的烷基基团,或未取代或取代的芳基基团;R*与化学式(I)中相同,公开了一种生产具有化学式(I)的光学活性stilbene化合物的方法,以及含有具有化学式(I)的光学活性stilbene化合物的液晶组合物。