Several (2‐amino‐4H‐1‐benzopyran‐4‐yl)phosphonates were efficiently synthesized by employing a multicomponent protocol involving a salicylaldehyde, malononitrile or ethyl cyanoacetate, and a trialkyl phosphite in polyethyleneglycol. The latter could be recovered and re‐used. No additional solvent or catalyst was required. To the best of our knowledge, this is the first report of the one‐pot preparation
通过使用涉及水杨醛,丙二腈或氰基乙酸乙酯的多组分方案以及聚乙二醇中的亚磷酸三烷基酯,可以有效地合成几种(2-氨基-4- H -1-苯并吡喃-4-基)膦酸酯。后者可以回收再利用。不需要额外的溶剂或催化剂。据我们所知,这是一次单罐制备(2-氨基-4 H -1-苯并吡喃-4-基)膦酸二甲酯的报告。