the preparation of phosphorus-containing pyrimidine analogues such as 4,6-disubstituted-2-ethoxy-2,5-dihydro-1,5,2-diazaphosphinine 2-oxides 5 from primary enamine phosphonates and nitriles is described. A similar strategy is used for the synthesis of the corresponding 4,6-difluorinated-1,5,2-diazaphosphinine 2-oxide derivatives 8.
描述了一种由伯烯胺
膦酸酯和腈制备含
磷的
嘧啶类似物,例如4,6-二取代-2-乙氧基-2,5-二氢-1,5,2-二氮杂
亚膦酸2-氧化物5的简单方法。类似的策略用于相应的4,6-二
氟-1,5,2-二氮杂膦2氧化物衍
生物8的合成。