Heteropoly acid catalysts in the valorization of the essential oils: Acetoxylation of β-caryophyllene
作者:Kelly A. da Silva Rocha、Nathália V.S. Rodrigues、Ivan V. Kozhevnikov、Elena V. Gusevskaya
DOI:10.1016/j.apcata.2009.11.032
日期:2010.2
efficient and clean method for the synthesis of 2, providing a mixture containing two stereoisomeric β-caryolanyl acetates 2a and 2b, 2a/2b = 80/20 mol/mol, with 100% GC yield, has been developed using PW as a homogeneous catalyst under mild reaction conditions. The reaction occurs at 25 °C with a catalyst turnover number of 2000. The catalyst can be recovered without neutralization and reused without loss
H 3 PW 12 O 40(PW)是Keggin系列中最强的杂多酸,是一种活性且环境友好的催化剂,用于将β-石竹烯(1)液相转化为乙酸-β-戊烯基乙酸酯(2)异构系统。一种高效且清洁的合成2的方法,提供了包含两种立体异构体的β-羧甲基乙酸乙酸酯2a和2b,2a / 2b的混合物 在温和的反应条件下,使用PW作为均相催化剂已开发出= 80/20 mol / mol,GC产率为100%。该反应在25℃下进行,催化剂的周转数为2000。该催化剂无需中和就可以回收,并且可以在不损失活性和选择性的情况下重复使用。