ethyl 2-[5-methyl-4-ylideno-(4-oxo-3-phenylthiazolideno-2-yl)pyrazolo-3-yl]-7-oxocyclohexeno[b]thiophene-3-carboxylate 在
sodium ethanolate 作用下,
以
乙醇 为溶剂,
反应 2.0h,
以68%的产率得到1-(4-hydroxy-3-phenyl-3H-thiazol-2-ylidene)-2-methyl-6,7-dihydro-1H,5H-9-thia-3,3a,10-triazacyclopenta[b]fluoren-4,8-dione