GODDARD, CARL J., J. AFIEROCYCL. HETEROCYCL. , 28,(1991) N, C. 17-28
作者:GODDARD, CARL J.
DOI:——
日期:——
5-Heteroaryl-2-thiophenecarboxylic acids: Oxazoles and oxadiazoles
作者:Carl J. Goddard
DOI:10.1002/jhet.5570280104
日期:1991.1
The synthesis of novel thiophene-2-carboxylic acids bearing alkyl and aryl-substituted oxazole and oxadiazole rings is reported. Sequential functionalization of the key precursor, 5-formyl-2-thiophenecarboxylic acid furnished the intermediate carboxylic acid esters which were converted into desired acids by basic cleavage.