dimethyl 1,2,6-trimethyl-4-phenyl-1,4-dihydropyridine-3,5-dicarboxylate

(+/-)-2-octyl acetoacetate

methyl 2-[(dimethylamino)methylene]-4-methoxy-3-oxobutanoate

methyl 4-(1-naphthyl)-2-oxobutyrate