| abstract |
NEW MATERIAL:The compound of formula I [R 1 is 1W20C alkyl or 1W20C alkoxy; R 2 is 1W15C alkyl or 1W15C alkoxy; A is group of formula II, formula III, etc. (X is halogen, H or cyano); * is optically active C]. n EXAMPLE: S-4'-octyloxy-4-(2-methyl-3-butanoyloxy-propoxy)biphenyl. n USE: A component of ferroelectric liquid crystal. It gives a liquid crystal composition having high spontaneous polarization (PS) and has short response time. n PREPARATION: The objective compound of formula I can be produced by using R-2-methyl-3-hydroxy-propionic acid of formula IV as a starting raw material, converting the material to the compound of formula V and esterifying the compound with butanoic acid in a solvent such as dichloromethane in the presence of N,N-dicyclohexyl-carbodiimide and a base at room temperature. n COPYRIGHT: (C)1988,JPO&Japio |