They were principally used to catalyze aldol, allylation, Diels - Alder, ene and Friedel - Crafts reactions.它们主要被用来催化Aldol, 烯丙基化, Diels-Alder, Ene和 Friedel -Crafts等反应....

烯丙基化（作用）...

allylation的音标：allylation的英式发音音标为：[ælɪ'leɪʃən]allylation的美式发音音标为：[ælɪ'leɪʃən]...