sodium sulfate in 1,2-dichloro-ethane T=20°C;

1: 1-(3,4-dimethoxyphenyl)cyclopropanecarbaldehyde; methylamine With sodium sulfate in 1,2-dichloro-ethane T=20°C; 0.166667 h; 2: With chloro-trimethyl-silane; sodium iodide in DMF (N,N-dimethyl-formamide) T=90°C; 3 h; 3: methyl vinyl ketone With hydrogenchloride more than 3 stages;