copper(l) iodide; (E)-1-(2-hydroxyphenyl)-3-(N,N-dimethylamino)prop-2-en-1-one; caesium carbonate in acetonitrile T=82°C; Goldberg type reaction; 12 h; Inert atmosphere;

in N,N-dimethyl-formamide 1.) 48 h; 2.) 0 deg C, 15 min;