6.2 Cyclizations of 1,1-Diacylcyclopropanes Abstract: The cyclization of 1,1-diacylcyclopropanes with free and masked dianions provides spirocyclopropanes which readily undergo ring-cleavage reactions [...] reactions. Cyclopropylated 1,3,5-tricarbonyl compounds were prepared for the first time. Based on this work also other syntheses of cyclopropanes were developed. Review: Synlett 2023 , 34 , 1765-1776. Period of
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