Efficient synthesis of α-substituted-α-arylmethyl phosphonates using trichloroacetimidate C C coupling method
作者:Walid Fathalla、Pavel Pazdera、Samir El-Rayes、Ibrahim.A.I. Ali
DOI:10.1016/j.tet.2018.02.033
日期:2018.4
A simple convenient protocol for the synthesis of diethyl α,α-diaryl methylphosphonate derivatives 5a-f, 6b-f, 7a-f and 8a-f, diethyl α-alkenyl α-aryl methylphosphonates 9a-d and 10a-d and α-(oxoalkyl) α-aryl methylphosphonate 11a-d and 12a-d is described. Trichloroacetimidates 3a-d were treated with activated arenes, styrene, allyltrimethylsilane or silylenol ethers C-nucleophiles in the presence
用于合成α,α-二芳基甲基膦酸二乙酯衍生物5a-f,6b-f,7a-f和8a-f,二乙基α-烯基α-芳基甲基膦酸酯9a-d和10a-d和α-的简单便捷方案描述了(氧代烷基)α-芳基甲基膦酸酯11a-d和12a-d。Trichloroacetimidates 3a-d中,用活化的芳烃,苯乙烯,烯丙基三甲基硅烷或silylenol醚处理Ç -nucleophiles在存在加入TMSOTf,得到良好的产率和较短的反应时间所需产物。