Synthesis of a New Class of Phosphinic Acids: Synthesis of Novel Four-Membered Cyclic Oxaphosphetanes by Intramolecular Mitsunobu Reaction of Bis(α-hydroxyalkyl)phosphinic Acids
novel class of phosphinicacid derivatives, four-membered cyclic oxaphosphetanes, was synthesized by the reaction of bis(hydroxymethyl)phosphinicacids with a mixture of triphenylphosphine and diisopropyl azodicarboxylate in toluene-dichloromethane at room temperature via an intramolecular Mitsunobu reaction. bis(α-hydroxyalkyl)phosphinicacids - oxaphosphetane - cyclicphosphinicacids - Mitsunobu reaction