Regio-and stereoselective chlorination of 2,6-Dichloro-4-phenyl-3,4,5,6-tetrahydro-2 H-1,2λ5-benzoxaphosphinin-2-one: Addition of two equivalents of chlorine with aromaticity disturbance.

A letter to the editor is presented in response to the article about the high regio- and stereoselectivity of the chlorination of phosphinine I appeared in the previous issue of "Russian Journal of General Chemistry."