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. ... A ligand-less catalytic system, Pd(OAc) 2 immobilized in NBu 4 Hal melt is suggested for the synthesis of arylacetic acids by the carbonylation of benzyl bromides. ... (b)D. Lednicer and LA Mitscher, The Organic Chemistry of Drug Synthesis, John Wiley, New York, 1980, vol. 2, ...