| 摘要 |
<p>Ester cpds. are of formula (I) (where R is 1-8C straight chain alkyl gps.). Mixts. of the present cpds. provides liq crystal compsns. useful at room temp. They may be used with other liq. crystals such as biphenyl and ester cpds. The esters are produced by reducing 4-n-alkylbenzoic acids, heating the prod., trans-4-n-alkylcyclohexane-1-carboxylic acids and excess thionyl chloride under reflux, distilling away excess thiony chloride under reduced pressure, distilling the residue under reduced pressure, heating the acid chloride obtd. and 2-chloro-4-phenylphenol at 80 degrees C for 30 mins, recrystallising the reaction prod. with ethanol. The yield of the prod. is about 50% of the trans-4-n-alkylcyclohexane-1-carboxylic acid.</p> |
