Acetic Acid → HCID 136130844, compound

Participants

Reaction Steps

A mixture of 3-(3-oxo-9-phenyl-3,7,8,9-tetrahydro-2H-pyrido[4,3,2-de]phthalazin-8-yl)benzaldehyde (50 mg, 0.14 mmol) and 1M dimethylamine methanol solution (0.5 ml, 0.41 mmol) in methanol (10 mL) was stirred at room temperature for 40 min. Then the mixture was cooled to 0° C. Sodium cyanoborohydride (13 mg, 0.20 mmol) and acetic acid (40.8 mg, 0.68 mmol) was added. After the addition, the mixture was stirred at 0° C. for 2 hr. Methanol was removed under reduced pressure. The residue was resolved with 1N hydrochloric acid and washed with ethyl acetate. The mother liquor was adjusted to pH=8 and extracted with ethyl acetate. The solvent was removed to give 8-(3-((dimethylamino)methyl)phenyl)-9-phenyl-8,9-dihydro-2H-pyrido[4,3,2-de]phthalazin-3(7H)-one (34 mg, yield 64%) as a light yellow solid. 1H-NMR (400 MHz, CD3OD) δ (ppm): 2.17 (s, 6H), 3.17-3.41 (q, 2H), 4.31 (d, J=8.0 Hz, 1H), 4.74 (d, J=8.0 Hz, 1H), 7.08-7.10 (m, 2H), 7.13-7.25 (m, 8H), 7.55-7.57 (d, J=8.0 Hz, 1H), 7.61-7.65 (m, 1H). LC-MS (ESI) m/z: 397 (M+1)+.

Provenance & Evidence