5-methyl-6-oxo-6,7-dihydro-5H-1-oxa-5-aza-s-indacene-7-carboxylic acid ethyl ester 、
2-amino-5-ethyl-1,3,4-thiadiazole 以
苯 为溶剂,
反应 18.0h,
以69%的产率得到5-methyl-6-oxo-6,7-dihydro-5H-1-oxa-5-aza-s-indacene-7-carboxylic acid (5-ethyl-[1,3,4]thiadiazol-2-yl)-amide