4-Benzoylbenzoic acid (I) was reduced with NaBH4 in EtOH, and the resulting alcohol (II) was treated with PBr3 to yield bromoacid (III). This was then coupled to Wang resin using diisopropylcarbodiimide and DMAP. The Wang resin-bound bromoester (IV) was condensed with diamine (V) to produce (VI). Finally, aminolysis of the resin bound aminoester (VI) was carried out by means of Et2NH in the presence of AlCl3 to yield the title diethylamide.