Methanesulfonyl chloride → 2-[4-amino-3-(3-methoxy-4-{[(1-methyl-1H-2-indolyl)carbonyl]amino}phenyl)-1H-pyrazolo[3,4-d]pyrimidin-1-yl]ethyl methanesulfonate

Participants

Reaction Conditions

Reaction Steps

To a 0° C. mixture of N2-{4-[4-amino-1-(2-hydroxyethyl)-1H-pyrazolo[3,4-d]pyrimidin-3-yl]-2-methoxyphenyl}-1-methyl-1H-2-indolecarboxamide (0.343 g, 0.750 mmol) and pyridine (7.5 mL) was added methanesulfonyl chloride (0.14 mL, 1.8 mmol) dropwise over 30 sec. The reaction mixture was stirred at 0° C. for 2 h then ice water (10 mL) was added. The precipitate was collected by filtration and dried in vacuo to afford 2-[4-amino-3-(3-methoxy-4-{[(1-methyl-1H-2-indolyl)carbonyl]amino}phenyl)-1H-pyrazolo[3,4-d]pyrimidin-1-yl]ethyl methanesulfonate as a beige solid (0.268 g, 0.500 mmol): 1H NMR (d6-DMSO, 400 MHz): δH 9.44 (1H, s), 8.30 (1H, s), 8.13 (1H, d, J=8.0 Hz), 7.70 (1H, d, J=8.0 Hz), 7.59 (1H, d, J=8.4 Hz), 7.31-7.38 (4H, m), 7.15 (1H, t, J=7.6 Hz), 4.70 (3H, s), 4.04 (3H, s), 3.96 (3H, s), 3.37 (2H, obscured by water peak), and 3.12 (2H, s); RP-HPLC (Hypersil C18, 5 μm, 100 Å, 15 cm; 5%-100% acetonitrile—0.1 M ammonium acetate over 15 min, 1 mL/min). Rt 11.22 min. MS: M+ 536.2.

Provenance & Evidence