Strong bases can abstract a proton α to double bond. A phenylthio group ψ to that double bond can be eliminated at the same time leading to a cyclopropane ring. The procedure is illustrated by a conversion of limonene into car-2-ene.
强碱可以将质子α提取为双键。可以同时消除该双键的苯
硫基ψ,从而形成
环丙烷环。该过程通过将
柠檬烯转化为car-2-ene来说明。