Dimethylamine → HCID 136385284, compound

Participants

Reaction Steps

A mixture of 3-(3-oxo-8-phenyl-3,7,8,9-tetrahydro-2H-pyrido[4,3,2-de]phthalazin-9-yl)benzaldehyde (45 mg, 0.12 mmol) and 33% dimethylamine solution (50.2 mg, 0.366 mmol) in methanol (5 mL) was stirred at room temperature for 1 h. Then the mixture was cooled to 0° C., sodium borohydride (6.95 mg, 0.184 mmol) was added portionwise. After the addition, the mixture was stirred at this temperature for 2 hr. Methanol was removed under reduced pressure. The residue was purified by prep-HPLC to give 9-(3-((dimethylamino)methyl)phenyl)-8-phenyl-8,9-dihydro-2H-pyrido[4,3,2-de]phthalazin-3(7H)-one (21 mg, yield 44%) as a light yellow solid. 1H-NMR (400 MHz, CD3OD) δ (ppm): 2.59 (s, 3H), 2.75 (s, 3H), 4.11-4.27 (q, 2H), 4.31-4.34 (d, J=10.4 Hz, 1H), 4.68-4.71 (d, J=10.4 Hz, 1H), 7.17-7.30 (m, 9H), 7.33-7.37 (t, J=7.6 Hz, 1H), 7.56-7.58 (d, J=7.6 Hz, 1H), 7.60-7.64 (t, J=8.0 Hz, 1H); LC-MS (ESI) m/z: 396(M+1)+.

Provenance & Evidence