| 摘要 |
NEW MATERIAL:The compound of formula I (the group of formula II is trans- 1,4,-disubstituted cyclohexane ring; R and R' are 1-8C alkyl). EXAMPLE:trans,trans-4-n-Propyl-4'-ethoxybicyclohexyl. USE:A component of a liquid crystal composition. It is a compound having low viscosity, and exhibiting liquid crystal nature with small refractive index anisotropy and high chemical stability. It gives a liquid crystal display element having rapid response and wide view angle. PREPARATION:The compound of formula I can be produced by reacting the compound of formula III with metallic Na in an inert organic solvent such as dimethoxyethane, etc., and reacting the resultant compound of formula IV with an alkylation agent of formula R'X (X is eliminable group such as halogen) e.g. CH3I, etc. |
