L. Xiu
2000
Citations
0
Influential Citations
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Citations
Journal
Fine chemicals
Abstract
Improved process for preparing esters of salicylic acid(2 hydroxybenzoic acid) and C 4-C 5 alcohols was obtained by using aryl sulphonic acid(ASA) instead of other four kinds of catalysts.In the presence of ASA,the optimized reaction conditions for preparing butyl and/or pentyl 2 hydroxybenzoates were presented:the ratio of acid to alcohol n(C 7H 6O 3)∶n(ROH) was 1∶1 8,the amount of ASA was 5%-7% of the mass of salicylic acid charged in the reaction,the reaction temperature was 110-140 ℃,and the reaction time was 4-7 h.The yield was about 92%-97%,the purity was over 99% by GC analysis.