Phosphorus oxychloride → 1H-Indole-3-carboxaldehyde, 1-methyl-2-phenyl-

참여 물질

반응 단계

To 150 ml of dimethylformamide 46 ml of phosphorus oxychloride were added dropwise care being taken that the temperature of the reaction mixture did not rise above 20°C. Subsequently to the obtained mixture 103.5 g of 1-methyl-2-phenylindole dissolved in 200 ml of dimethylformamide were added dropwise. During the addition the reaction mixture was kept at a temperature in the range of 20° to 40°C and thereupon for 1 hour kept between 40° and 45°C. Then the reaction mixture was poured into a solution of 490 g of sodium acetate dissolved in 500 ml of water to which 500 g of ice were added. The precipitated aldehyde was separated by suction, washed with water and methanol.

출처 및 근거