反应详情

2,6,7-Trimethyl-3,4-dihydroquinazolin-4-one (European Patent Specification No. 0284338) was reacted with chloromethyl pivalate using the procedure described in European Patent Specification No. 0239362 for the corresponding reaction of 2,6-dimethyl-3,4-dihydroquinazolin-4-one. There was thus obtained 3-(pivaloyloxymethyl)-2,6,7-trimethyl-3,4-dihydroquinazolin-4-one. The product so obtained was reacted with N-bromosuccinimide in the presence of benzoyl peroxide using the procedure described in European Patent Specification No. 0284338 to give 6-bromomethyl-2,7-dimethyl-3-(pivaloyloxymethyl)-3,4-dihydroquinazolin-4-one in 57% yield, m.p. 149°-152° C.

1. customThe product so obtained