Nitrogen → 5-{1-[(2,5-difluorophenyl)acetyl]-2,3-dihydro-1H-indol-5-yl}-7-[2-(dimethylamino)ethyl]-7H-pyrrolo[2,3-d]pyrimidin-4-amine

Participants

Reaction Conditions

Reaction Steps

To 5-bromo-7-[2-(dimethylamino)ethyl]-7H-pyrrolo[2,3-d]pyrimidin-4-amine (100 mg, 0.352 mmol), 1-[(2,5-difluorophenyl)acetyl]-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-2,3-dihydro-1H-indole (183 mg, 0.457 mmol) in a 5 ml sealable vial was added 1,4-Dioxane (2 mL) and saturated NaHCO3 (1 mL). The mixture was then bubbled N2 gas for 10 minutes then Pd(Ph3P)4 (40.7 mg, 0.035 mmol) was added. The mixture was again bubbled N2 gas for 5 minutes then capped and the reaction was heated at 100° C. overnight. The reaction was diluted with water (3 ml) then extracted with EtOAc (3×mL). The organics were combined and washed with brine, dried over Mg2SO4, filtered and concentrated. The resulting amber color oil was dissolved in 3 mL of DMSO and purified by HPLC: (HPLC condition: Gilson using Trilution software with a Sunfire 5u C18(2) 100A. 50×30.00 mm 5 micron. 7.3-minute run (47 ml/min, 7% ACN/H2O, 0.1% TFA to 37% ACN/H2O, 0.1% TFA) with UV detection at 254 nm). Product fractions were combined and the volume was reduced to remove most of the MeCN. The water left behind was added to saturated NaHCO3 and then extracted with EtOAc (3×15 mL). The organic was combined wash with saturated NaCl solution, dried over MgSO4, filtered and concentrated. Then it was transferred into a 40 mL vial with MeCN then added water and freeze-dried to give 5-{1-[(2,5-difluorophenyl)acetyl]-2,3-dihydro-1H-indol-5-yl}-7-[2-(dimethylamino)ethyl]-7H-pyrrolo[2,3-d]pyrimidin-4-amine (35 mg). LC/MS (ES) m/z=477.5 [M+H]+. 1H NMR (400 MHz, DMSO-d6) δ 8.14 (s, 1H), 8.09 (d, J=8.08 Hz, 1H), 7.33 (s, 2H), 7.15-7.30 (m, 4H), 6.06 (br. s., 2H), 4.24-4.33 (m, 4H), 3.95 (s, 2H), 3.24-3.30 (m, 2H), 2.72 (br. s., 2H), 2.24 (br. s., 6H).

Provenance & Evidence