作者:R.G. Harvey
DOI:10.1016/s0040-4020(01)99048-9
日期:1966.1
Reaction of triethyl phosphite with a series of α,β-unsaturated esters, ketones, aldehydes, amides and nitriles in protonating solvents proceeds smoothly to furnish β-substituted phosphonate esters. This process, termed hydrophosphinylation, is quite general in contrast to reduction and reductive dimerization, the alternative reaction pathways previously observed for dibenzoylethylene. The most active
亚磷酸三乙酯与一系列α,β-不饱和酯,酮,醛,酰胺和腈在质子化溶剂中的反应可顺利进行,以提供β-取代的膦酸酯。与还原和还原二聚作用相反,该过程称为氢次膦酰基化,这一过程非常普遍,而还原和还原二聚作用是先前观察到的对二苯甲酰基乙烯的替代反应途径。活性最高的烯烃(甲基乙烯基酮,巴豆醛,肉桂醛)即使在0°时也发生转化,以提供类似的产物,主要是其缩醛或缩酮形式。讨论了有关这些转化机制的证据,尤其是有关初始攻击的位置,乙缩醛和缩酮的起源以及溶剂的作用的证据。