N,N'-Dimethylethylenediamine → HCID 86696424, compound

Participants

Reaction Steps

A solution of (S)-iso-propyl 2-(((3-bromoimidazo[1,2-b]pyridazin-6-yl)amino)methyl)pyrrolidine-1-carboxylate (300 mg, 0.79 mmol), NaCN (46 mg, 0.94 mmol), CuI (15 mg, 0.08 mmol), KI (27 mg, 0.16 mmol) and N1,N2-dimethylethane-1,2-diamine (0.085 mL, 0.79 mmol) in toluene (0.8 mL) was stirred at 110° C. for 12 h. The reaction was cooled, concentrated, taken up with EtOAc and water, extracted and dried organic layer with MgSO4. The organic layer was concentrated and purified by ISCO (0-5% MeOH/DCM), then following PREP HPLC (neutral) to give (S)-isopropyl 2-(((3-cyanoimidazo[1,2-b]pyridazin-6-yl)amino)methyl)pyrrolidine-1-carboxylate (63 mg, 25% yield). 1H NMR (400 MHz, METHANOL-d4) δ ppm 8.00 (s, 1H), 7.72 (d, J=9.85 Hz, 1H), 6.91 (d, J=9.85 Hz, 1H), 4.20 (m, 1H), 3.38-3.61 (m, 4H), 1.97-2.05 (m, 4H), 1.16-1.25 (m, 6H); LRMS (ESI) m/e 329.2 [(M+H)+, calcd for C16H21N6O2 329.4].

Provenance & Evidence