Acetic Acid → HCID 19744041, compound

Participants

Reaction Steps

Into 10 ml of acetic acid were dissolved 500 mg of ethyl 1-(2,4-dichlorophenyl)methyl-1,4-dihydro-2-oxo-4-thioxo-3(2H)-quinazolineacetate, and, after added 3 ml of concentrated hydrochloric acid and then 0.5 ml of concentrated sulfuric acid, the mixture was refluxed for 1 hour. After cooling by allowing to stand, the reaction mixture was poured into 200 ml of water and the deposits were collected by filtration. They were recrystallized from acetic acid to obtain 300 mg of title compound. m.p. 220°-221° C.

Provenance & Evidence