ChemInform Abstract: Synthesis of 1,2,5,6‐Tetrahydrophosphorin 1‐Oxides and 1,2‐Dihydrophosphorin 1‐Oxides from 2,5‐Dihydro‐1H‐phosphole 1‐Oxide ‐ Dichlorocarbene Adducts.

Abstract

The phosphabicyclohexane derivatives (I), obtained by treatment of dihydrophosphole oxides with dichlorocarbene, react with water in the presence of silver nitrate, yielding mixtures of the diastereomeric tetrahydrophosphorins (II) and (III) and their regioisomers (IV) and (V).