Chemoselective esterification and amidation of carboxylic acids with imidazole carbamates and ureas.
Imidazole carbamates and ureas were found to be chemoselective esterification and amidation reagents. A wide variety of carboxylic acids were converted to their ester or amide analogues by a simple synthetic procedure in high yields.
Heller
Stephen T
ST
Department of Chemistry, University of California, Berkeley, California 94720, USA.
Sarpong
Richmond
R