1: 6-hydroxy-1,2,3,4-tetrahydro-2-quinolinone With potassium carbonate in water; acetone T=20°C; 1 h; 2: 1,3-dibromo-propane in water; acetone T=20°C; 16 h;

1.1: AlCl3, aluminium chloride / N,N-dimethyl acetamide / 140 - 150 °C 2.1: potassium carbonate / water; acetone / 1 h / 20 °C 2.2: 16 h / 20 °C View Scheme

1.1: sodium carbonate / toluene / 2 h / 40 - 65 °C 2.1: AlCl3, aluminium chloride / N,N-dimethyl acetamide / 140 - 150 °C 3.1: potassium carbonate / water; acetone / 1 h / 20 °C 3.2: 16 h / 20 °C View Scheme