6-methyl-2,3-diphenyl-2H-1,3-oxazin-4-one

2,2,6-trimethyl-3-phenyl-1,3-oxazin-4-one

2,2,6-trimethyl-3-(4-nitrophenyl)-1,3-oxazin-4-one

5-methyl-2-(3-methylphenyl)-1,2-oxazol-3-one

2-(4-chlorophenyl)-5-methyl-1,2-oxazol-3-one