2-(dimethylamino)-5-phenyl-1,3-oxazin-4-one

N,N-dimethyl-2-phenylethanimidamide

2-(dimethylamino)-6,6-dimethyl-5,7-dihydrocyclopenta[e][1,3]oxazin-4-one

2-(dimethylamino)-5,6-diphenyl-1,3-oxazin-4-one

2-(dimethylamino)-6,7-dihydro-5H-cyclopenta[e][1,3]oxazin-4-one