Hydrogen Bromide → 4-(1,2,4-Triazol-1-yl)phenol

Participants

Reaction Steps

A mixture of 8 parts of 1-(4-methoxyphenyl)-1H-1,2,4-triazole and 150 parts of a hydrobromic acid solution 48% is stirred and refluxed overnight. The reaction mixture is evaporated and the residue is triturated in 2-propanone. The product is filtered off and crystallized from ethanol, yielding 5.5 parts (74%) of 4-(1H-1,2,4-triazol-1-yl)phenol; mp. 255.4° C.

Provenance & Evidence