反应详情

In a mixture of 6 ml of pyridine and 80 ml of methylene chloride was dissolved 5.3 g of 2-[2-(1H-tetrazol-5-yl)phenylthio]aniline followed by dropwise addition of 5.4 g of butyl 4-chloroformylphenoxyacetate, and the mixture was stirred overnight. The solvent was then distilled off and the residue was crystallized from aqueous ethanol and then recrystallized ethyl acetate to give 8.1 g of the title compound as white crystals, m.p. 133-135.

1. distillationThe solvent was then distilled off
2. customthe residue was crystallized from aqueous ethanol