Synthesis of 3-oxo-3-Phenyl-2,2,5-trimethyl-1,3-oxaphosphorinanes and their tetrafluoroborate salts

Abstract

The synthesis and characterization of cis- and trans- 3-oxo-3-phenyl-2,2,5-trimethyl-1,3-oxaphosphorinanes (7a and 7b) and their corresponding tetrafluoroborate salts (3a and 3b) , heterocyclic organophosphorus compounds not previously reported in the literature, was accomplished. They were fully characterized by 1H, 13C and 31PNMR. It was established the relative configuration of these compounds on the basis of an X-ray diffraction study of oxide 7a.