Hydrogen-1 nuclear magnetic resonance evidence for trans addition in oxythallation of acyclic olefins

Abstract

Hydrogen-1 n.m.r. conformational analyses of some stabilised oxythallation products from styrene, o-allylphenol propylene, and oct-1-ene have been performed primarily on the basis of the variation in thallium–proton spin–spin couplingconstants. The results have been applied to the oxythallated adduct of trans-β-deuteriostyrene to provide the first direct evidence for trans addition in the oxythallation of acyclic olefins.