摘要
以4-正丙基,4-正戊基取代的双环己基甲酸、联苯甲酸和环己基苯甲酸以及对羟基苯甲醛为原料,用一次酯化、一次氧化的方法(酯化氧化法),合成了4个单酯基芳香酸类化合物:4-〔4-(反-4-丙基环己基)苯酰氧基〕苯甲酸,4〔-反-4-(反-4-丙基环己基)环己酰氧基〕苯甲酸,4-〔反-4-(反-4-戊基环己基)环己酰氧基〕苯甲酸和4-〔4-(4-戊基苯基)苯酰氧基〕苯甲酸,总产率分别为74%,76%,72%和71%。产物结构用IR,MS,1HNMR及元素分析进行了表征,DSC及偏光显微镜测定表明,4个目标化合物具有热致液晶性。
Using a series of acids of double rings substituted by n-propyl or n-pentyl group together with p-hydroxy-benzaldehyde as reactants ,by esterification and then oxidation ,four liquid crystal compounds of multi-ring acyloxy aromatic acids were synthesized, namely 4-[4-（ trans-4-propylcyclohexyl ） benzoyloxy] benzoic acid ,4-[ trans-4-（trans-4-propylcyclohexyl） eyelohexanecarboxyloxy ] benzoic acid, 4-[4-（trans-4-pentylcyclohexyl） cyclohexanecarboxyloxy ] benzoic acid and 4-[ 4-（4-pentylphenyl） benzoyloxy] benzoic acid, in total yields of 74%, 76%, 72% and 71% respectively. IR, MS, ^1HNMR and elementary analysis confirmed their structures, and their thermal properties were determined by DSC and polarizing optical microscope.
出处
《精细化工》
EI
CAS
CSCD
北大核心
2006年第12期1167-1170,共4页
Fine Chemicals
关键词
芳香酸
氧化
酯基
液晶
aromatic acid
oxidation
ester
liquid crystal
