Studies of Organophosphorus Derivatives. Part I. Nuclear Magnetic Resonance Studies of the 2-Oxo-1,3,2-dioxaphosphorinane System

Abstract

The n.m.r. spectra of a series of simple derivatives of the 2-oxo-1,3,2-dioxaphosphorinane system are discussed in terms of the favored conformations of the derivatives and the stereospecific dependencies of vicinal³¹P—O—C—¹H couplings. Attention is drawn to a type of "deceptively-simple" ABX spectrum which is commonly found for the n.m.r. spectra of substances containing one or more heteronuclear species.