Methyl Isocyanate → 6-bromo-3,4-dihydro-4-hydroxy-3-methyl-4-phenyl-2(1H)-quinazolinone

Participants

Reaction Steps

A solution of 14.70 g (0.053 mole) of 2-amino-5-bromobenzophenone and 6.0 g (0.21 mole) of methyl isocyanate in 75 ml of methylene chloride was refluxed for two days and then cooled. The solid portion of the reaction mixture was collected on a filter and washed with methylene chloride to give 16.18 g (90% yield) of 6-bromo-3,4-dihydro-4-hydroxy-3-methyl-4-phenyl-2(1H)-quinazolinone as a white crystalline powder: mp 293°-294° (dec.).

Provenance & Evidence