Sodium Methoxide → 2-[(2-{[1-(N,N-dimethylglycyl)-5-(methyloxy)-2,3-dihydro-1H-indol-6-yl]amino}-1H-pyrrolo[2,3-d]pyrimidin-4-yl)amino]-6-fluorobenzamide

Participants

Reaction Steps

A mixture of 2-({2-{[1-(N,N-dimethylglycyl)-5-(methyloxy)-2,3-dihydro-1H-indol-6-yl]amino}-7-[(4-methylphenyl)sulfonyl]-7H-pyrrolo[2,3-d]pyrimidin-4-yl}amino)-6-fluorobenzamide (6.7 g, 10 mmol), a solution of NaOMe (0.5M in MeOH, 200 mL, 100 mmol) and THF (400 mL) was stirred at rt overnight. The resulting mixture was filtered through a pad of silica gel, which was rinsed with a solution of NH3 (2N in MeOH). The filtrate was concentrated. The residue was dissolved in THF and purified by silica gel chromatography using 0-10% MeOH (containing 0.2% NH3)/THF. The crude product was dissolved in a mixture of THF and MeOH (200 mL) and washed with a 2N NaOH solution (200 mL) and a saturated NaCl solution (100 mL). The organic layer was dried (Na2SO4), concentrated and triturated using Et2O to obtain 2.18 g of 2-[(2-{[1-(N,N-dimethylglycyl)-5-(methyloxy)-2,3-dihydro-1H-indol-6-yl]amino}-1H-pyrrolo[2,3-d]pyrimidin-4-yl)amino]-6-fluorobenzamide as a beige solid. The impure fractions from the column were combined and concentrated. The residue was dissolved in THF. MeOH (100 mL) was added, followed by NaOMe (2.6 g). After 2 h the resulting mixture was diluted with EtOAc (100 mL) and a 2N NaOH solution (200 mL). The organic layer was washed with a saturated NaCl solution (200 mL), dried (Na2SO4) and concentrated down to about 20 mL volume. The resulting slurry was filtered and the solids were washed with Et2O to obtain 0.95 g of 2-[(2-{[1-(N,N-dimethylglycyl)-5-(methyloxy)-2,3-dihydro-1H-indol-6-yl]amino}-1H-pyrrolo[2,3-d]pyrimidin-4-yl)amino]-6-fluorobenzamide as a light brown solid (combined yield 3.13 g, 61%). 1H NMR (400 MHz, DMSO-d6) δ ppm 2.24 (s, 6 H), 3.11 (t, J=8.25 Hz, 2 H), 3.31 (s, 3 H), 3.76 (s, 2 H), 4.17 (t, J=8.25 Hz, 2 H), 6.21 (dd, J=3.48, 1.65 Hz, 1 H), 6.80-6.90 (m, 1 H), 6.90-7.01 (m, 2 H), 7.25-7.37 (m, 1 H), 7.59 (s, 1 H), 8.01 (s, 1 H), 8.09 (s, 1 H), 8.50 (d, J=8.43 Hz, 1 H), 8.60 (s, 1 H), 10.53 (s, 1 H), 11.28 (s, 1 H). ESIMS (M+H)=519.

Provenance & Evidence