A convenient synthesis of 5-ethoxy-4-(trifluoromethyl)-2-oxazolecarboxylic acid and related trifluoromethyl substituted heterocyclic compounds
作者:Guoqiang Shi、Yuanyao Xu、Ming Xu
DOI:10.1016/s0022-1139(00)80131-1
日期:1991.4
derivatives have been prepared ingood yields. The acid 4 was found to decarboxylate readily onheating to give the simple CF3-substituted oxazole 5, which wasfurther utilized as an aza-diene for the synthesis of 3-hydroxy-2-trifluoromethyl-4-pyridinecarboxylic acid from acrylic acid.