1: N,N-dimethyl-formamide With bis(trichloromethyl) carbonate in chloroform T=20°C; Vilsmeier reaction; Cooling with ice; 2: methyl (3-chlorophenyl)-ketone in chloroform T=20 - 60°C; Vilsmeier reaction;

Vilsmeier formylation;

1,4-diaza-bicyclo[2.2.2]octane T=50°C; Baylis-Hillman reaction; 3.5 h; Neat (no solvent)Sonication;

1,4-diaza-bicyclo[2.2.2]octane; AlCl3, aluminium chloride T=20°C; Baylis-Hillman reaction; 10 h; Neat (no solvent)Sonication;

1,4-diaza-bicyclo[2.2.2]octane; AlCl3, aluminium chloride T=20°C; Baylis-Hillman reaction; 12 h; Neat (no solvent)Sonication;