Diastereoselective functionalisation of benzo-annulated bicyclic sultams: Application for the synthesis of <i>cis</i>-2,4-diarylpyrrolidines
作者:Susan Kelleher、Pierre-Yves Quesne、Paul Evans
DOI:10.3762/bjoc.5.69
日期:——
The cis-dibromination of unsaturated bicyclicbridgehead sultams 5a and 5b, and experiments designed to understand the cis-stereochemical outcome of these reactions, are described. In the case of 5b, a novel solvent dependent carbocation rearrangement occurs with the formation of 18b. cis-Dibromides 13a and 13b undergo regioselective dehydrobromination, and the participation of the resultant vinyl