Formation of cyclic phosphonium salts in trichlorosilane reduction of phosphine oxides bearing a pendant hydroxyl group and their hydrolysis to cyclic phosphine oxides

Article abstract of DOI:10.1080/10426500701280137

An unusual ring closure to cyclic phosphonium salts was observed during trichlorosilane reduction of phosphine oxides with a pendant hydroxylmethyl group. Alkaline hydrolysis of the cyclic phosphonium salts afforded a cyclic phosphine oxide and a ring-fis