Acetyl chloride → 3-Acetyl-1,3-bis(2-cyano-5-trifluoromethylphenyl)triazene

Participants

Reaction Steps

A solution of 5.6 g. (0.015 mol.) of 1,3-bis(2-cyano-5-trifluoromethylphenyl)triazene in 450 ml. of warm ether is added dropwise to a slurry of 1.20 g. (0.025 mol.) of 50% sodium hydride in 15 ml. of ether. Upon cessation of gas evolution, 1.42 g. (0.018 mol.) of acetyl chloride is gradually added and the reaction mixture is stirred for two hours at 25°. The mixture is filtered to remove excess sodium hydride and the filtrate is concentrated to give 3-acetyl-1,3-bis(2-cyano-5-trifluoromethylphenyl)triazene, m.p. 111°-112° (hexane).

Provenance & Evidence