摘要:
A ferroelectric liquid crystal composition comprising at least one compound represented by the formula (I): wherein R¹ and R² are, the same or different, a straight-chain or branched-chain alkyl group having 1 to 15 carbon atoms, and each asterisk represents an asymmetric carbon atom, and at least one compound represented by the formula (II): wherein R³ and R⁴ are, the same or different, a straight-chain or branched-chain alkyl group having 1 to 15 carbon atoms, and each asterisk represents an asymmetric carbon atom, and liquid crystal device incorporating same.
摘要:
An industrial and economical method for obtaining a (S)-3-halogeno-1,2-propanediol, which comprises cultivating a microorganism belonging to the genus Pseudomonas which has an ability to assimilate (R)-3-halogeno-1,2-propanediol and can grow by assimilating (R)-3-halogeno-1,2-propanediol as a single carbon source, in a culture medium containing a racemic 3-halogeno-1,2-propanediol as a substrate, and isolating the (S)-3-halogeno-1,2-propanediol from the culture medium.
摘要:
A process for preparing an optically active 4-halogeno-1,3-butanediol and (R)-1,2,4-butanetriol or (S)-3-hydroxy-γ-butyrolactone which comprises reacting a racemic 4-halogeno-1,3-butanediol with a specific microorganism belonging to the genus Pseudomonas.
摘要:
This document discloses a process for producing optically active R-(+)-2,3-dichloro-1-propanol, which comprises cultivating an S-(-)-2,3-dichloro-1-propanol-assimilating strain belonging to the genus Alcaligenes in a culture medium containing racemate 2,3-dichloro-1-propanol, and recovering optical isomer R-(+)-2,3-dichloro-1-propanol from the culture broth and a pure culture of an S-(+)-dichloro-1-propanol-assimilating strain belonging to the genus Alcaligenes .
摘要:
A process for preparation of R-(-)-3-halogeno-1,2-propanediol which comprises cultivating in a medium containing racemate 3-halogeno-1,2-propanediol a bacterium, which, when cultivated in a medium containing racemate 3-halogeno-1,2-propanediol as a sole carbon source, can grow and proliferate, has an ability to assimilate S-(+)-3-halogeno-1,2-propanediol preferentially compared to R-(-)-3-halogeno-1,2-propanediol and belongs to the genus Pseudomonas , ot its culture cells; and recovering R-(-)-3-halogeno-1,2-propanediol from the resulting culture broth.