Wittig reactions with β-lactam carbonyl functions. The effect of C-7 substitution on the chemistry of penicillins and clavulanic acid derivatives
Abstract
The Wittig reaction of phosphoranes and phosphonates with the carbonyl function of mono- and bicyclic β-lactams has been studied and the influence of phosphorane and β-lactam reactivities on the outcome of the reaction noted. The utility and general chemistry of the Wittig products from penicillins and clavulanic acid esters is also reported.