Abstract
Abstract An easy synthesis of 4-(1- and 2-haloalkyl)azetidin-2-ones by a [2+2] cycloadditon protocol is described. Starting from these functionalized β-lactams, new pathways toward bicyclic β-lactams were developed via intramolecular nucleophilic substitutions and radical cyclizations. 4-(1- and 2-Haloalkyl)azetidin-2-ones also proved to be very useful starting products in the synthesis of various highly substituted aziridines, azetidines, and alkenoates.
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