OPTICALLY ACTIVE LACTONE DERIVATIVE, ITS INTERMEDIATE, PRODUCTION THEREOF, LIQUID CRYSTAL COMPOSITION AND LIQUID CRYSTAL DISPLAY ELEMENT
- 申请公布号：
- JPH02286673(A)
- 申请号：
- JP19890107850
- 申请日期：
- 1989.04.28
- 申请公布日期：
- 1990.11.26
- 申请人：
- DAINIPPON INK & CHEM INC;KAWAMURA INST OF CHEM RES;SAGAMI CHEM RES CENTER
- 发明人：
- TAKEHARA SADAO;KURIYAMA TAKESHI;NAKAMURA KAYOKO;SHOJI TADAO;FUJISAWA NOBURU;OSAWA MASASHI;HIYAMA TAMEJIROU;KUSUMOTO TETSUO;NAKAYAMA AKIKO;NISHIDE KIYOJI
- 分类号：
- G02F1/13;C07C255/37;C07D307/33;C09K19/34;C09K19/54
- 主分类号：
- G02F1/13
- 摘要：
- NEW MATERIAL:An optically active compound of formula I (R<1> is an optically active group selected from 1 to 20C alkyl, alkoxy, alkanoyloxy; R<2> is optically active or inactive alkyl of 1 to 20 carbon atoms; formula II is formula III, formula IV, formula V; *, ** means C* in the 2-position and C** in the 4-position in the lactone ring and they are asymmetric carbons of (S) or (R) conformation, respectively. EXAMPLE:(2R,4R)-2-[4 (4-Octyloxybenzoyloxy)phenyl]-4-decanolide. USE:A component constituting liquid crystal compositions. It is useful as a chiral dopant and in ferroelectric liquid crystal display elements of high response. PREPARATION:The reaction of a compound of formula VI (R<3> is lower alkyl) with an optically active compound of formula VII gives a novel intermediate of formula VIII and the intermediate is used to give a novel compound of formula IX. Then, the product is allowed to react with a compound of formula X in the presence of a basic substance to give the compound of formula I.
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