p-Cyanobenzamide → 4-Cyanobenzoic acid

Participants

Reaction Steps

Sodium nitrite (2.07 g) was dissolved in a 70 wt. % aqueous sulfuric acid solution (100 ml), and p-cyanobenzamide (2.92 g) was added to the resultant solution. The mixture was allowed to react at room temperature for one hour with stirring. The precipitated crystals were collected through filtration, washed with water, and dried, to thereby obtain 2.77 g of p-cyanobenzoic acid (yield 95%). High performance liquid chromatographic analysis revealed that the p-cyanobenzoic acid obtained had a purity of 99% or more.

Provenance & Evidence