One-Pot Conversions of Olefins to Cyclic Carbonates and Secondary Allylic and Homoallylic Amines to Cyclic Carbamates
作者:Stephen G. Davies、Ai M. Fletcher、Wataru Kurosawa、James A. Lee、Giovanna Poce、Paul M. Roberts、James E. Thomson、David M. Williamson
DOI:10.1021/jo101614f
日期:2010.11.19
Sequential treatment of a 1,2-disubstituted olefin with m-CPBA, Br3CCO2H, and DBU results in the one-pot, stereospecific conversion of the olefin to the corresponding disubstituted cyclic carbonate (1,3-dioxolan-2-one). The reaction proceeds via an initial epoxidation followed by SN2-type epoxide ring opening by Br3CCO2H and subsequent base-promoted carbonate formation upon elimination of bromoform