Anisoles 1, reacting with AlCl3 and PCl3 with appropriate reagent ratios, give, in good yields, the corresponding diaryl methylphosphonates 2 or the methylphosphinates 3b,c and the methylphosphine oxides 4b,c. This unexpected in situ methylphosphorylation explains the reported limited and conflicting results to obtain methoxy-substituted arylphosphonous dichloride with the same reagents. A suggested mechanism is also reported.
苯甲醚1与
AlCl3和PCl3以适当的试剂比反应,能够良好地生成相应的二芳基
甲基膦酸酯2或
甲基膦酸酯3b,c,以及
甲基膦氧化物4b,c。这一意外的原位
甲基膦酸化解释了使用相同试剂获得美克羟基取代的芳基
膦酸二
氯化物时报告的有限且相互冲突的结果。同时还报告了一个提出的机制。