6-Chloro-3-ethyl-4-hydroxy-4-phenyl-3,4-dihydroquinazolin-2(1H)-one → HCID 178518621, compound

Participants

Reaction Steps

A stirred mixture of 12.11 g (0.04 mole) of 6-chloro-3-ethyl-3,4-dihydro-4-hydroxy-4-phenyl-2(1H)quinazolinone and 8.34 g (0.12 mole) of hydroxylamine hydrochloride in 200 ml ethanol was refluxed for 3 days and then cooled. The solid portion of the reaction mixture was collected on a filter, washed with ethanol, and dried to give 9.27 g (85%) of 6-chloro-4-phenyl-2(1H)quinazolinone 3-oxide as yellow crystals, mp 267°-269°.

Provenance & Evidence