Thionyl Chloride → 3-[3-(Chlorocarbonyl)benzene-1-sulfonyl]triaza-1,2-dien-2-ium-1-ide

Participants

Reaction Steps

In a flask provided with a reflux condensor 175 g of m-azidosulphonyl-benzoic acid and 500 ccs of thionyl chloride are refluxed for approximately 4 hours. The excess of thionyl chloride is distilled off in vacuo and the residue is recrystallized from a mixture of 100 ccs of hexane and 100 ccs of benzene. Melting point: ± 40° C.

Provenance & Evidence