thiophene-2-carboxaldehyde methylhydrazone 、 methyl 4-[(2Z)-2-(1-chloro-2-methoxy-2-oxoethylidene)hydrazinyl]benzoate 在
三乙胺 作用下,
以
四氢呋喃 为溶剂,
以68%的产率得到5-(4-Methoxycarbonyl-phenyl)-2-methyl-6-thiophen-2-yl-1,2,5,6-tetrahydro-[1,2,4,5]tetrazine-3-carboxylic acid methyl ester