2-aryl-3-arylazoacrylonitriles are synthesized while attempting the intramolecular N-arylation of 5-aminopyrazoles, using the hypervalent iodine reagent. The synthesis involves phenyl iodine diacetate-assisted ring opening of 5-aminopyrazoles at room temperature. A plausible mechanism for the formation of azoalkenes is proposed.
在尝试使用高价
碘试剂对 5-
氨基
吡唑进行分子内N-芳基化的同时,合成了各种 2-芳基-3-芳基偶氮
丙烯腈。该合成涉及苯基
碘二
乙酸酯在室温下辅助 5-
氨基
吡唑的开环。提出了形成偶氮烯烃的合理机制。