镧系盐催化合成辣椒酯衍生物

Synthesis of Sapsiniods Derivatives Catalyzed by Lanthanide Salts

对比研究了三氯化铕、三氯化镧、三氯化铈和三氯化镨4种镧系盐催化剂化学选择酯化香草醇收率的影响。结果表明,三氯化镧为最佳催化剂,当n(香草醇)∶n(酰氯)∶n(三氯化镧)=1∶1∶0.005时,辛酸香草醇酯、癸酸香草醇酯及月桂酸香草醇酯的收率可分别达87%、85%和71%。

The effects of EuCl3, LaCl3, CeCl3 and PrCl3 as catalyst on the yields of eapsinoids derivatives were studied. The results show that LaC13 is the best catalyst among them. When the molar ratio of vanillyl alcohol, acyl chloride and La Cl3 was 1 ： 1 ： O. 005, the yields of vanillyl caprylate, vanillyl deaconate and vanillyl dilaurate would be up to 87% , 85% and 71%, respectively.