Synthesis of novel 2,5-dihydro-1,5,2-diazaphosphinines from primary enamine phosphonates and from alkyl phosphonates
作者:Francisco Palacios、Ana M. Ochoa de Retana、Sergio Pascual、Rafael López de Munain、Julen Oyarzabal、José M. Ezpeleta
DOI:10.1016/j.tet.2004.11.061
日期:2005.1
pyrimidine analogues such as 2,5-dihydro-2-ethoxy-1,5,2-diazaphosphinine 2-oxides 9, 12–15 and adducts 3, 10 is described. Dihydrophosphinines 9, 12–15 are prepared from primary enamine phosphonates and nitriles or from phosphonates and nitriles in the presence of base, while highly stable hydrogen-bonded amine-dihydro-diazaphosphinine adducts 3, 10 are obtained by the addition of amine to dihydrophosphinines
对于含磷的嘧啶类似物如2,5-二氢-2-乙氧基- 1,5,2-diazaphosphinine 2-氧化物的制备的简单方法9,12 - 15和加合物3,10进行说明。Dihydrophosphinines 9,12 - 15选自伯烯胺膦和腈或从在碱的存在下膦酸盐和腈制备,而高度稳定的氢键键合的胺二氢diazaphosphinine加合物3,10通过加入胺与dihydrophosphinines获得9或通过在LDA存在下使烷基膦酸酯与腈反应来实现。