Water → HCID 21997544, compound

Participants

Reaction Steps

A mixture of N-[4-(6-methoxy-n-hexyloxy)benzoyl]-N′-(4-methoxycarbonylbenzoyl)hydrazine (193.4 g) and phosphorus pentasulfide (113.34 g) in tetrahydrofuran (2.5 L) was heated to reflux for 1 hour then cooled to room temperature and poured into water (7 L). The resulting precipitate was collected by filtration, washed thoroughly with water then partially dried. The solid was added to 1:1 CH3CN—H2O (200 ml), sitrred then filtered. This procedure was repeated a further 2 times, and the resulting yellow powder washed thoroughly with acetonitrile (500 ml×5) then dried under hi-vacuum at 50° C. to give methyl 4-[5-[4-(6-methoxy-n-hexyloxy)phenyl]-1,3,4-thiadiazol-2-yl]benzoate (179.6 g) as a yellow powder.

Provenance & Evidence