Download full text in PDF Opens in a new window. Article suggestions will be shown in a dialog on return to ScienceDirect. ... Please enable JavaScript to use all the features on this page. ... Carboxylates have been used as pronucleophiles in the phosphine-catalyzed γ-addition reaction to alkynes bearing electron-withdrawing groups (Trost's reaction) giving rise to functionalized allyl carboxylates. ... HJ Reich, MC Clark, WW Willis Jr. ... Sodium phenylacetate (2b) ...