smoothly with trimethylphosphite in the presence of methyltriphenylphosphonium iodide to give N-acyl-2-(dimethoxyphosphoryl)glycinates in good or very good yields. The dimethoxyphosphorylglycinates may be isolated by column chromatography, or used directly for the Wadsworth–Emmons synthesis of α,β-dehydro-α-amino acids in a one-pot procedure without purification.
容易获得的N-酰基-2-
三苯基膦酰基甘
氨酸酯在
碘代甲基三苯基phosph存在下,四
氟硼酸酯与亚
磷酸三甲酯平稳反应,以良好或非常好的收率得到N-酰基-2-(二甲氧基
磷酰基)甘
氨酸酯。二甲氧基
磷酰基甘
氨酸盐可以通过柱色谱法分离,也可以不经纯化直接通过一锅法用于Wadsworth-Emmons合成α,β-脱氢-
α-氨基酸。