The phosphonylation by oxirane/phosphorous acid is characterized by formation of spirophosphorane, which provides the active intermediate in the reaction, β-hydroxyalkyl alkylene phosphite. Here, we demonstrate that a well-known and readily accessible spirophosphorane, 2λ5-2,2′spirobi[1,3,2-benzodioxaphosphole] can be used as convenient and effective phosphonylating agent in similar reaction. The easily
环氧乙烷/
亚磷酸的膦酰化反应的特征是形成螺正膦,它提供了反应中的活性中间体,β-羟亚烷基
亚磷酸酯。在这里,我们证明了众所周知且易于获得的螺正膦,2λ5-2,2'螺二[1,3,2-苯并二氧杂
磷]可用作类似反应中方便有效的膦酰化剂。易于检测的初级 3-苯基丙基 H-
膦酸酯,以及 5'-O-tritylthymidyl、4-N-benzoyl-5'-O-trityl-deoxycytidyl、5'-O-trityl-deoxycytidyl、6-N-benzoyl -5'-O-三苯甲基-脱氧
腺苷5'-O-三苯甲基
脲基和2',3'-异亚丙基-
尿苷基H-
膦酸酯使用简单直接的方法制备。