triethylamine in diethyl ether Reflux;

1: acetyl chloride With AlCl3, aluminium chloride in dichloromethane Cooling with ice; 2: allyl bromide in dichloromethane T=0°C; 3: With hydrogenchloride; water in dichloromethane Cooling with ice;

aluminium trichloride in dichloromethane T=5°C; 0.5 h; Yield given. Yields of byproduct given;

in diethyl ether; water 6 h; Heating;