4-(trans-4"-(trans-4"-alkylcyclohexyl)-cyclohexyl) biphenyl

Abstract

Abstract NEW MATERIAL:The compound of formulaI(R is H or 1-10C alkyl). USE:A liquid crystal compound having small positive dielectric anisotropy, broad liquid crystal temperature range, especially high clear point of liquid crystal (N-I point or Sm-I point) and low viscosity. It is stable to heat, air, moisture, light, etc. PROCESS:The compound of formulaIis prepared by (1) reacting the compound of formula II with metallic Mg to obtain the compound of formula III, (2) reacting the compound with the compound of formula IV, (3) dehydrating the resultant compound of formula V to the compound of formula VI using KHSO4 as the catalyst, (4) reducing the product in ethanol solvent under normal pressure at 30 deg.C using Raney-Ni catalyst, and (5) recrystallizing the resultant mixture of the trans-and cis-isomers with ethanol.

Inventors

• 👤 Shigeru Sugimori
• 👤 滋 杉森
• 👤 Tetsuhiko Kojima
• 👤 哲彦 小島
• 👤 Masakazu Tsuji
• 👤 正和 辻

Bibliographic Details