Aza-Wittig reaction of N-phosphorylalkyl phosphazenes with carbonyl compounds and phenylisocyanate. Synthesis of 4-amino-3-phosphoryl-2-azadienes and pyrazine-phosphonates
作者:Francisco Palacios、Ana Marı́a Ochoa de Retana、Eduardo Martı́nez de Marigorta、Marta Rodriguez、Jaione Pagalday
DOI:10.1016/s0040-4020(03)00337-5
日期:2003.4
aza-Wittig reaction of phosphazenes derived from aminophosphonates with carbonyl compounds and phenyl isocyanate. The reaction with dimethylformamide diethyl acetal (DMF–DEA) of these functionalized imines leads to the synthesis of 4-amino-3-phosphoryl-2-azadienes. N-Phosphorylmethyl imine derived from benzaldehyde can be used for the preparation of substituted pyrrole-phosphonates, while acid treatment
通过衍生自氨基膦酸酯的磷腈与羰基化合物和异氰酸苯基酯的氮杂-维蒂希反应,获得简单且官能化的N-磷酰基烷基亚胺和N-磷酰基烷基-N'-苯基-碳二亚胺。这些功能化的亚胺与二甲基甲酰胺二乙缩醛(DMF-DEA)的反应导致合成4-氨基-3-磷酰基-2-氮杂二烯。衍生自苯甲醛的N-磷酰基甲基亚胺可用于制备取代的吡咯膦酸酯,而对4-二甲基氨基-3-二乙基磷酰基-1-苯基-2-氮杂二烯进行酸处理可得到5-二乙基磷酰基吡嗪-2-基膦酸二乙酯。