The microwave (MW)-assisted addition of dialkyl phosphites to α-oxophosphonates was investigated and optimized under solventless conditions to provide the phenyl- and benzyl-hydroxy-methylenebisphosphonates efficiently by suppressing the rearrangement side reaction. Methyl-hydroxy-methylenebisphosphonates with mixed ester functionalities and an analogous diester-diacid were also synthesized. It was
在无溶剂条件下对
亚磷酸二烷基酯与 α-氧代
膦酸酯的微波 (MW) 辅助加成进行了研究和优化,以通过抑制重排副反应有效地提供苯基-和苄基-羟基-亚甲基
双膦酸酯。还合成了具有混合酯官能团和类似的二酯二酸的甲基-羟基-亚甲基
双膦酸酯。发现α-氧代
膦酸酯也可以转化为羟基-亚甲基
双膦酸酯和/或重排产物,而无需使用
亚磷酸二烷基酯作为试剂并小心排除
水,只需在室温下静置、热处理或MW辐照。还详细研究了通过前体的受控分解发生并导致中间体形成
亚磷酸二烷基酯的这些新反应。© 2011 Wiley Periodicals, Inc. 杂原子
化学 22:640–648, 2011; 在 wileyonlinelibrary.com 上在线查看这篇文章。DOI 10.1002/hc.20727