secondary or tertiary amides of α-benzamidocinnamic acids with acetic anhydride–perchloric acid gave N-(4-arylmethylene-2-phenyl-Δ2-oxazolin-5-ylidene)ammonium perchlorates. The N-monosubstituted iminium salts were deprotonated to yield the corresponding 4-arylmethylene-5-imino-Δ2-oxazolines; successive treatment of two NN-disubstituted iminium perchlorates with ammonia and sodium hydroxide produced novel
的α-benzamidocinnamic
羧酸与
乙酸酐-
高氯酸7个仲或叔酰胺处理,得到ñ - (4-芳亚甲基-2-苯基-Δ 2 -oxazolin -5-亚基)
铵高氯酸盐。所述Ñ α-单基取代亚
铵盐被去质子化,得到相应的4-芳亚甲基-5-亚
氨基Δ 2个-oxazolines; 两个连续处理NN二取代的
氨和
氢氧化钠亚胺高氯酸盐生产的新型1,3- diazafulvenes(4-芳亚甲基-5-
二甲氨基-2-苯基-4- ħ -
咪唑)。