(2-Naphthyloxy)acetyl Chloride serves as one of the reagents for the discovery of indoline-2-carboxamide derivatives as new classs of brain-penetrant inhibitors of trypanosoma brucei. Also in preparation and antibacterial activity of N-(phenylquinazolinonyl) aryl-amides by amidation of amino(phenyl)quinazolone with aroyl chlorides