Preparation of Unsymmetrical Sulfonylureas from <i>N</i>,<i>N</i>‘-Sulfuryldiimidazoles
作者:Serge Beaudoin、Kenneth E. Kinsey、James F. Burns
DOI:10.1021/jo026505k
日期:2003.1.1
use in parallel synthesis. We have developed a method for preparing sterically congested sulfonylureas based on N,N'-sulfuryldiimidazole that is both convenient and amenable to parallel synthesis. Sequential activation by way of alkylation of the imidazole group using methyl triflate followed by nucleophilicdisplacement with a variety of amines and anilines afford the unsymmetrical sulfonylurea. Sulfonylureas