Organophosphorus chemistry. Part 1. The synthesis of alkyl methylphosphonic acids
作者:Christopher M. Timperley、Michael Bird、Ian Holden、Robin M. Black
DOI:10.1039/b007077g
日期:——
Several alkyl hydrogen methylphosphonates of structure RO(HO)P(O)Me were synthesised by a three-stage route [R = i-Pr, n-Bu, i-Bu, s-Bu, pinacolyl Me3C-CH(Me)-, cyclopentyl and cyclohexyl]. Trimethyl phosphite was transesterified with alcohols in the presence of sodium catalyst to give the mixed phosphites (MeO)2POR in 6–64% yield. Treatment of these with methyl iodide gave alkyl methyl methylphosphonates
通过三步路线合成了结构RO(HO)P(O)Me的几种烷基氢甲基膦酸酯[R = i -Pr,n -Bu,我-Bu,s -Bu,pinacolyl Me 3 C-CH(Me)-,环戊基 和 环己基]。 亚磷酸三甲酯 被酯交换 酒类 在钠存在下 催化剂得到6–64%的混合亚磷酸酯(MeO)2 POR。用这些治疗甲基碘以66–95%的收率得到烷基甲基甲基膦酸酯RO(MeO)P(O)Me。可选择的脱甲基 这些化合物的 溴三甲基硅烷, 其次是 甲醇分解甲硅烷基磷酯RO(Me 3 SiO)P(O)Me生成氢膦酸酯 收率为60–97%。