Dichloromethane → HCID 71256167, compound

Participants

Reaction Steps

To a suspension of (E)-N-(6-(4-amino-3-iodo-1H-pyrazolo[3,4-d]pyrimidin-1-yl)pyridine-3-yl)-4-(dimethylamino)-N-methylbut-2-enamide (65) (100 mg, 0.21 mmol), arylboronic acid (0.27 mmol) and K3PO4.3H2O (168 mg, 0.63 mmol) in DME (8 mL) and water (2 mL) was added Pd(dppf)Cl2.DCM (9 mg, 0.02 mmol). The resulting mixture was purged with N2 (3×) before microwaved at 90° C. for 45 min. The solvents were evaporated and the residual was directly loaded to a silica gel column and pre-purified by column chromatography (0 to 10% MeOH in DCM) followed by preparative HPLC purification (RP C18, 10 to 95% acetonitrile in water (0.2% NH3)) to give (E)-N-(6-(4-amino-3-(4-chlorophenyl)-1H-pyrazolo[3,4-d]pyrimidin-1-yl)pyridin-3-yl)-4-(dimethylamino)-N-methylbut-2-enamide (66) (27 mg, 28%) as a white solid. 1H NMR (400 MHz, DMSO) δ 9.82 (br, 2H), 8.57 (d, J=2.5 Hz, 1H), 8.40 (s, 1H), 8.33 (d, J=8.7 Hz, 1H), 8.08 (dd, J=8.7, 2.6 Hz, 1H), 7.75 (d, J=8.5 Hz, 2H), 7.64 (d, J=8.5 Hz, 2H), 6.73-6.65 (m, 1H), 6.34-6.19 (m, 1H), 3.80 (s, 2H), 3.34 (s, 3H), 2.69 (s, 6H). LC-MS (ESI): m/z (M/M+2) 463/465.

Provenance & Evidence