HCID 178524272, compound → HCID 178514934, compound

Participants

Reaction Steps

2-(p-Chlorophenylthio)-4-(5-tetrazolyl)benzoic acid (3.41g) was heated with polyphosphoric acid (70g) on a steam bath for 1 hr. The reaction mixture was decomposed by warming with water, and the product filtered off, washed with water, recrystallised from dimethylformamide, and dried at 156° C. in vacuo, giving 7-chloro-3-(5-tetrazolyl)thioxanthone, decomposes without melting.

Provenance & Evidence