With the development of practical methods for their preparation, trichloroacetimidates have proven to be valuable substrates for use in carbohydrate and organic synthesis. The broad utility of allyl trichloroacetimidates for the construction of carbon-heteroatom bonds is the result of the unique features of the trichloroacetimidate nitrogen functionality as a directing, nucleophilic, and leaving group. In this review we describe the expansion of Overman's [3,3]-rearrangement of allyl trichloroacetimidates to allylic substitution reactions for regio- and enantioselective C-N, C-O, and C-F bond-forming methodologies.