Methanol → 5-Amino-1,2-dihydroquinolin-2-one

Participants

Reaction Steps

4.5 g of 5-nitroquinolin-2(1H)-one (Chem. Pharm. Bull. (1981), 29, pp. 651-56) is hydrogenated in 200 ml of ethyl acetate and 500 ml of methanol in the presence of 450 mg of palladium on activated carbon as a catalyst under normal pressure with hydrogen until the reaction is completed. The catalyst is removed by filtration through diatomaceous earth, and the reaction solution is concentrated by evaporation in a vacuum. 3.8 g of the title compound is obtained as a yellow solid.

Provenance & Evidence