Hydrogen Peroxide → HCID 178513658, compound

Participants

Reaction Steps

One gram of 2-(p-cyanophenyl)-pyrazolo[4,3-c]quinolin-3(5H)-one, 3.50 ml of 1 N aqueous sodium hydroxide and 10 ml of ethanol are mixed and stirred at room temperature until the solid has dissolved. The solution is then treated with 1.4 ml of 30% hydrogen peroxide, giving an immediate precipitate. After stirring for 2 hours at room temperature, the mixture is filtered, and the solid is crystallized from dimethylformamide, to yield the 2-(p-carbamoylphenyl)-pyrazolo [4,3-c]quinolin-3(5H)-one, showing peaks in the IR-spectrum at 885, 853, 830, 785, 775, 752 and 732 cm-1.

Provenance & Evidence