Reaction of benzolactams with triethyl phosphite prompted by phosphoryl chloride affords benzoannulated monophosphonates instead of expected bisphoshonates
作者:Ewa Chmielewska、Patrycja Miszczyk、Joanna Kozłowska、Monika Prokopowicz、Piotr Młynarz、Paweł Kafarski
DOI:10.1016/j.jorganchem.2015.03.005
日期:2015.6
gave cyclic aminomethylene-gem-bisphosphonates in reaction with triethyl phosphite and phosphoryl chloride, the corresponding benzoannulated lactams usually provide monophosphonates of variable structures, which depend on size of the substrate aliphatic ring. Most likely they are obtained by dephosphonylation of bisphosphonates, which form as initial products of this reaction. These phosphonate esters
相比于脂族内酰胺,这给了环状aminomethylene-宝石-bisphosphonates在反应中与亚磷酸三乙酯和磷酰氯,相应的内酰胺benzoannulated通常提供可变的结构,这取决于基片的脂肪族环的大小的monophosphonates。它们很可能是通过双膦酸酯的去膦酰基化而获得的,双膦酸酯是该反应的初始产物。这些膦酸酯在酸水解和储存时似乎不稳定。已经提出了酸催化这些化合物降解的机理。