2-(Diphenylphosphinylmethyl)phenol is a useful reagent in the preparation of phosphine oxides and phosphonates via trimethylsilyl halide-promoted Michaelis-Arbuzov rearrangement of phosphinites and phosphites1. 2-(Diphenylphosphinylmethyl)phenol is a catalyst for the “redox-neutral” Mitsunobu reaction2.