Optically active 6-substituted-pyridine-3-carboxylic acid ester compound and liquid crystal

Abstract

Abstract NEW MATERIAL:The optically active 6-substituted-pyridine-3-carboxylic acid ester compound of formula I (R is 2-14C alkyl; R2 is optically active alkyl). EXAMPLE:6-n-Octyloxypyridine-3-carboxylic acid 4'-[(S)-2-methylbutyloxycarbo nyl]4-biphenyl ester. USE:A liquid crystal substance stable against moisture and light, having excellent weather resistance and exhibiting chiral smectic C liquid crystal over a wide temperature range. PREPARATION:The objective compound of formula I can be produced by (1) heating and refluxing the compound of formula II and excess thionyl chloride for several hr, (2) distilling out unreacted thionyl chloride under reduced pressure and (3) reacting the resultant compound of formula III with the compound of formula IV in an aromatic hydrocarbon solvent such as benzene, toluene, etc., in the presence of an organic basic compound such as pyridine, triethylamine, etc., at room temperature or under heating for several hr.

Inventors

• 👤 Yuzo Sakurai
• 👤 桜井　雄三
• 👤 Norio Kitajima
• 👤 教雄 北島
• 👤 Sakie Hasegawa
• 👤 長谷川　佐喜恵

Bibliographic Details