Hydrochloric Acid → 7-(Benzyloxy)-6-methoxyquinolin-4-ol

Participants

Reaction Conditions

Reaction Steps

A mixture of sodium methylate (270 mmol, 14.75 g, favorable prepared from sodium metal and methanol before use), 1,2-dimeythoxyethane (122 ml) and 1-(2-amino-4-benzyloxy-5-methoxy-phenyl)-ethanone (6.68 g 24 mmol) was stirred at 0° C. for 1 hour. Ethyl formate (10.7 ml, 9.81 g, 132 mmol) was added to the reaction mixture, that was allowed to come to room temperature and stirred for further 4 hours. The mixture was diluted with water (50 ml) and acidified to pH 1 by adding hydrochloric acid (1N, 185 ml). The precipitate was filtered, washed with water and dried to give 6.51 g of product [D]. Yield: 94%.

Provenance & Evidence