Thiophen-2-ylmethyl 2-chloro-2-[(4-nitrophenyl)hydrazinylidene]acetate 在
silver carbonate 作用下,
以
1,4-二氧六环 为溶剂,
反应 14.0h,
以5%的产率得到(7aR,10aS)-4,7-Bis-(4-nitro-phenyl)-3-oxo-7,7a-dihydro-4H-2-oxa-10-thia-4,5,6a,7-tetraaza-dicyclopenta[a,h]pentalene-6-carboxylic acid thiophen-2-ylmethyl ester