Hydrazine hydrate (1:1) → 8-(4-(diethoxymethyl)phenyl)-9-(1-methyl-1H-imidazol-2-yl)-8,9-dihydro-2H-pyrido[4,3,2-de]phthalazin-3(7H)-one

Participants

Reaction Conditions

Reaction Steps

A mixture of ethyl 2-(4-(diethoxymethyl)phenyl)-3-(1-methyl-1H-imidazol-2-yl)-4-oxo-1,2,3,4-tetrahydroquinoline-5-carboxylate (490 mg, 1.03 mmol), methanol (20 mL) and hydrazine monohydrate (2 mL) was stirred under 25° C. for 3 hr. The resulting mixture was evaporated under reduced pressure to 10 ml and then filtered, 250 mg of 8-(4-(diethoxymethyl)phenyl)-9-(1-methyl-1H-imidazol-2-yl)-8,9-dihydro-2H-pyrido[4,3,2-de]phthalazin-3(7H)-one as a solid was obtained, yield 55%. LC-MS (ESI) m/z: 446 (M+1)+.

Provenance & Evidence