1: 4-methoxy-benzoic acid With 1,1,1,3,3,3-hexabromoacetone; triphenylphosphine in dichloromethane T=20°C; 1 h; 2: para-n-butylaniline With triethylamine in dichloromethane T=20°C; 0.25 h;

pyridine 24 h; Ambient temperature;