Oxidation of 3-amino-2-isobutylquinazoline-4-one (2) with lead tetraacetate at -20-degrees-C gave N-acetoxyamino-2-isobutylquinazolin-4-one (3), which selectively aziridinated olefinic esters to yield substituted 1-(2'-isobutylquinazolin-4'-one-3'-yl)-aziridine-2-carboxylates 5a-q.
Oxidation of 3-amino-2-isobutylquinazoline-4-one (2) with lead tetraacetate at -20-degrees-C gave N-acetoxyamino-2-isobutylquinazolin-4-one (3), which selectively aziridinated olefinic esters to yield substituted 1-(2'-isobutylquinazolin-4'-one-3'-yl)-aziridine-2-carboxylates 5a-q.