The reaction of (Z)-N-(2-amino-1,2-dicyanovinyl)formamidoxime 3a with aromatic aldehydes led to the isolation of amidoximes 4 in good yield. The structure of these compounds was confirmed by single crystal X-ray analysis. Amidoximes 4 cyclized in the presence of DDQ leading to 1-(N-benzyloxyformimidoyl)-2-aryl-4,5-dicyanoimidazoles 5 in good yields. The structure of these compounds was also confirmed by X-ray crystallography. When the reaction of the formamidoximes 3a and 3b with aromatic aldehydes was carried out in the presence of DBU, a different pathway was followed leading to a γ-lactam structure 8.
                                    (Z)-N-(2-
氨基-1,2-二
氰基
乙烯基)
甲脒肟 3a 与芳香醛反应后分离出了脒
肟 4,收率很高。单晶 X 射线分析证实了这些化合物的结构。脒氧
肟 4 在 
DDQ 的存在下发生环化反应,生成 1-(N-苄氧基甲
酰亚胺酰基)-2-芳基-
4,5-二氰基咪唑 5,收率很高。这些化合物的结构也通过 X 射线晶体学得到了证实。当甲酰
氨基
肟 3a 和 3b 与芳香醛在 
DBU 存在下发生反应时,会遵循不同的途径生成δ-内酰胺结构 8。