The Correct Structure of Cyclic Adducts of (Diphenylmethylene)oxophenylphosphorane witn Aromatic aldehydes

Article abstract of DOI:10.1246/bcsj.64.713

The title cyclic adducts have been reported to be 4-aryl-2,3,3-triphenyl-1,2-oxaphosphetane 2-oxides.However, these compounds are concluded not to be the 1,2-oxaphosphetanes, but 1-aryl-3,4-diphenyl-3,4-dihydro-1H-2,3-benzoxaphosphorin 3-oxides from detailed NMR studies and the investigation of the chemical behavior of the adduct of benzaldehyde.