The straightforward functionalization of sterically demanding α,α-disubstituted double bonds of β-pinene, (-)-limonene and (-)-limonene terpenoids has been achieved via cross metathesis with internal olefins. The reactions are catalyzed by second generation ruthenium catalysts in dimethyl carbonate as green solvent or under neat conditions. This transformation provides a clean process for the access
β-蒎烯、(-)-
苎烯和(-)-
苎烯萜类的空间要求高的α,α-二取代双键的直接功能化已经通过与内
烯烃的交叉复分解实现。该反应由第二代
钌催化剂在作为绿色溶剂的
碳酸二甲酯中或在纯净条件下催化。这种转变为获得官能化的大环萜
烯提供了一种干净的方法,其中末端双键生成三取代的
烯烃。