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. ... The palladium-catalyzed vicinal carbonylation of the 1-substituted-3-methoxycarbonyl-2-propynyl methyl carbonates 6 proceeds at room temperature under atmospheric pressure of CO to give the triesters 7 in good yields. ... The palladium-catalyzed vicinal carbonylation of the ...