Liquid crystal compound bearing methylenoxy group and its composition

Abstract

Abstract NEW MATERIAL:A compound of formula I (R is 1-18C alkyl; R* is 4-15C optically active alkyl; X, Z are single bond, O, CO, OCO, OCOO, X is further COO; Y is CH2O, OCH2; m, n are 1, 2). EXAMPLE:Optically active 4'-octyloxy-4-{p-(1-methylheptyloxy)phenyloxy}methyl- biphen-yl. USE:A chiral smectic liquid crystal advantageously used as a photoswitching element with large spontaneous polarization, because of its low-voltage driving and high response speed. PREPARATION:The reaction between compounds of formula IIa (L is halogaen, tosyloxy, methylsulfonyloxy) and formula IIIb or between compounds of formula IIb and IIIa is carried out in a solvent such as dimethyl sulfoxide in the presence of an alkali to give a compound of formula Ia or formula Ib.

Inventors

• 👤 Shinichi Saito
• 👤 伸一 斉藤
• 👤 Hiromichi Inoue
• 👤 博道 井上
• 👤 Kazutoshi Miyazawa
• 👤 宮沢　和利
• 👤 Takashi Inukai
• 👤 犬飼　孝
• 👤 Kenji Terajima
• 👤 寺島　兼詞

Bibliographic Details