Laterally Substituted 4-<i>n</i>-Alkylphenyl 4-<i>n</i>-Alkylbicyclo (2.2.2) octane-1-carboxylates
作者:G. W. Gray、S. M. Kelly
DOI:10.1080/00268948108073607
日期:1981.10
4-n-alkylphenyl 4-n-alkylbicyclo (2.2.2) octane-1-carboxylates to produce new series of low melting esters with large nematic ranges. In particular, thirty 4-n-alkyl-2-fluorophenyl and thirteen 4-n-alkyl-2-chlorlorophenyl 4-n-alkylbicyclo (2.2.2)octane-1-carboxylates are reported. The effect of the various lateral substituents on the clearing points and viscosities of the esters are rationalized in terms of
摘要 将不同的取代基(氟、氯、溴和氰基)分别引入 4-n-烷基苯基 4-n-烷基双环 (2.2.2) 辛烷-1-羧酸酯的酚基部分的 2-位以制备具有大向列范围的新系列低熔点酯。特别地,报道了三十个 4-n-烷基-2-氟苯基和十三个 4-n-烷基-2-氯代苯基 4-n-烷基双环 (2.2.2) 辛烷-1-羧酸酯。就空间相互作用和庞大的 1, 4 双取代双环 (2.2.2) 辛烷环的“屏蔽”特性而言,各种侧向取代基对酯的清除点和粘度的影响是合理的。4-n-烷基-2-氟苯基4-n-烷基双环(2.2.