作者:Henri-Jean Cristau、Agnès Hervé、David Virieux
DOI:10.1016/j.tet.2003.11.045
日期:2004.1
The syntheses of new γ-ethoxycarbonyl- and α-amino-alkyl hydroxymethylphosphinic acid derivatives are described. These compounds were conveniently prepared by Michael addition or Kabachnik–Fields reaction of an original precursor, ethyl benzyloxymethyl hydrogenophosphinate, respectively to α,β-unsaturated esters using a basic activation or to imines. Selective deprotection of the alcohol function was
描述了新的γ-乙氧基羰基-和α-氨基烷基羟甲基次膦酸衍生物的合成。这些化合物可以方便地通过原始加成物,即苄氧基甲基氢次膦酸乙酯的Michael加成反应或Kabachnik-Fields反应,使用碱性活化作用或与亚胺反应成α,β-不饱和酯。醇官能团的选择性脱保护是通过在Pd / C上进行氢解来实现的,而溴化锂用于选择性裂解次膦酸酯基团。酸性水解容易得到游离的羟甲基次膦酸。