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.
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Aldol condensation is an important organic reaction which leads to the formation of new C - C bond.
羟醛缩合可以形成新的碳 - 碳键,增长碳链,是一类重要的有机反应.
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