作者:Mireille Attolini、Michel Maffei、Cécile Garzon
DOI:10.1055/s-0030-1260176
日期:2011.10
α-(Substituted methyl)vinylphosphonates are obtained by a DABCO-catalyzed substitution reaction of diethyl α-(tert-butoxycarbonyloxymethyl)vinylphosphonate and (N-protected) amino- or soft pronucleophiles. The reactions are easily performed under mild conditions (r.t., 1 h), and give good to excellent yields of the title compounds. A diphosphonate by-product was isolated in some examples, when the
α-(取代的甲基)乙烯基膦酸酯是通过DABCO催化的α-(叔丁氧基羰氧基氧基甲基)乙烯基膦酸二乙酯与(N-保护的)氨基或软亲核试剂的取代反应而获得的。该反应易于在温和的条件下(室温,1小时)进行,并且标题化合物的产率良好至优异。在一些实例中,当亲核试剂具有不太明显的亲核特性时,分离出二膦酸酯副产物。 α-(取代的甲基)乙烯基膦酸酯-有机催化-二乙基α-(叔丁氧基羰氧基氧基甲基)乙烯基膦酸酯-前亲核试剂-1,4-二氮杂双环[2.2.2]辛烷