CAJ | 학술논문

以肉桂酸和无水乙醇为原料、廉价的氨基磺酸/浓硫酸为协同催化剂、环己烷为带水剂，合成了肉桂乙酯，收率90.0％。反应的优化条件为：氨基磺酸/浓硫酸/肉桂酸/无水乙醇＝1.9/1/9.1/31.8（物质的量之比），时间3 h。利用该优化条件，共合成了9种羧酸乙酯，包括芳香酸、脂肪酸、二元酸、不饱和酸的乙酯。该法突出的优点有：催化剂价廉易得且可重复使用、产率高、后处理简便。
이육계산화무수을순위원료、렴개적안기광산/농류산위협동최화제、배기완위대수제，합성료육계을지，수솔90.0％。반응적우화조건위：안기광산/농류산/육계산/무수을순＝1.9/1/9.1/31.8（물질적량지비），시간3 h。이용해우화조건，공합성료9충최산을지，포괄방향산、지방산、이원산、불포화산적을지。해법돌출적우점유：최화제개렴역득차가중복사용、산솔고、후처리간편。
Ethyl cinnamate was efficiently synthesized in 90.0%isolated yield by using cinnamic acid and anhydrous ethanol as sub-strates,and amino sulphonic acid/concentrated sulfuric acid as synergistic catalyst.The optimized reaction conditions were:amino sulphonic acid/concentrated sulfuric acid/cinnamic acid/anhydrous ethanol =1.9/1/9.1/31.8 ( molar ratio), reaction time 3 h.Other eight ethyl carboxylates were easily synthesized under the optimized conditions ,including aryl,aliphatic,diacid,and unsatu-rated acid ethyl esters.The method featured recyclable and cheap synergistic catalysts ,excellent isolated yields as well as very con-venient reaction workup.