Compound of trans-dihalogenostilbene derivative and its use

Abstract

Abstract NEW MATERIAL:A compound expressed by formula I (A<1> to A<4> is trans-1,4- cyclohexylene or phenylene which may be replaced, wherein CH group in the groups may be replaced by N and CH2 group may be replaced by O or S; B<1> and B<2> are phenylene which may be replaced in which CH in the groups may be replaced by N; Y<1> to Y<4> are COO, O, OCO, CH2CH2, CH=CH, CidenticalC, N=N, single bond, etc.; X<1> and X<2> are F, Cl or Br; (m), (n), (p) or (q) are 0 or 1; R<1> and R<2> are 1-10C alkyl, halogen, nitrile, NCS or H). USE:A liquid crystal compound. PREPARATION:An iodide expressed by formula II is lithiated using n-butyl lithium to give a compound expressed by formula III and in the same manner, a compound expressed by formula IV is obtained. The compound expressed by formula III is reacted with tetrahalogenoethylene at -80 deg.C to afford a compound expressed by formula V, which is then reacted with a compound expressed by formula IV to provide the compound expressed by formula I.

Inventors

• 👤 Kikumasa Sato
• 👤 佐藤　菊正
• 👤 Seiichi Inoue
• 👤 誠一 井上
• 👤 Jun Ishihara
• 👤 潤 石原
• 👤 Katsutoshi Machida
• 👤 町田　勝利

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