The straightforward functionalization of sterically demanding α,α-disubstituted double bonds of the natural products β-pinene and limonene via cross metathesis with symmetrical internal olefins is described. The reaction is catalyzed by Hoveyda-Grubbs type ruthenium catalysts in dimethyl carbonate as green solvent and makes possible the clean introduction of ester and nitrile groups in one step without formation of byproducts.

中文翻译：

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（-）-β-pine烯和（-）-柠檬烯通过对称内烯烃的交叉复分解官能化

描述了天然产物β-pine烯和li烯通过与对称内部烯烃的交叉复分解而直接进行的空间要求性α，α-二取代双键的官能化。该反应由Hoveyda-Grubbs型钌催化剂在碳酸二甲酯中作为绿色溶剂催化，使一步纯化酯和腈基的引入成为可能，而不会形成副产物。