Diisopropylethylamine → HCID 72944224, compound

Participants

Reaction Conditions

Reaction Steps

Sodium triacetoxyborohydride (0.13 g; 0.62 mmol; 2.0 eq.) was slowly added to a solution of 2-[3-(1-methyl-1H-pyrazol-4-yl)phenyl]-5-(1-piperidin-4-yl-1H-pyrazol-4-yl)pyrimidine (example 1,200 mg; 0.31 mmol; 1.0 eq.), DIEA (53 μl; 0.31 mmol; 1.0 eq.) and 3-oxetanone (39 μl; 0.62 mmol; 2.0 eq.) in DCE (4 mL). The reaction mixture was then stirred at 50° C. for 3 h. It was then quenched by addition of water. Aqueous phase was basified to pH 12 and extracted with EtOAc (three times). Combined organic phases were washed with brine, dried over magnesium sulfate, filtered and concentrated to give the title compound as a beige powder (100 mg, 73%). 1H NMR (300 MHz, DMSO-d6) δ 9.17 (s, 2H), 8.59-8.50 (m, 2H), 8.27 (s, 1H), 8.25-8.18 (m, 1H), 8.18-8.11 (m, 1H), 7.96-7.89 (m, 1H), 7.77-7.66 (m, 1H), 7.52 (t, J=7.7 Hz, 1H), 4.56 (t, J=6.5 Hz, 2H), 4.46 (t, J=6.1 Hz, 2H), 4.23 (s, 1H), 3.90 (s, 3H), 3.51-3.40 (m, 1H), 2.87-2.73 (m, 2H), 2.17-1.90 (m, 6H). HPLC (Condition A): Rt 2.49 min (purity 97.2%). MS (ESI+): 442.5.

Provenance & Evidence