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。