Trifluoroacetic acid → 7-(3-azetidinyl)-5-(1-{[3-(trifluoromethyl)phenyl]acetyl}-2,3-dihydro-1H-indol-5-yl)-7H-pyrrolo[2,3-d]pyrimidin-4-amine

Participants

Reaction Conditions

Reaction Steps

To 1,1-dimethylethyl 3-(4-amino-5-bromo-7H-pyrrolo[2,3-d]pyrimidin-7-yl)-1-azetidinecarboxylate (70 mg, 0.190 mmol) and 5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1-{[3-(trifluoromethyl)phenyl]acetyl}-2,3-dihydro-1H-indole (115 mg, 0.266 mmol) were added 1,4-Dioxane (2 mL) and sat. NaHCO3 (1 mL) into a 5 ml sealable. The mixture was then bubbled with N2 gas for 5 minutes, and then Pd(Ph3P)4 (21.97 mg, 0.019 mmol) was added and the vessel was capped. The reaction was then heated at 100° C. overnight. The reaction was then diluted with water (2 ml) then extracted with EtOAc (3×3 ml). The organics were then combined and washed with brine, dried over MgSO4, filtered and concentrated. The crude was dissolved in 3 mL of DMSO and the product was 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, 35% ACN/H2O, 0.1% TFA to 60% ACN/H2O, 0.1% TFA) with UV detection at 220 nm). Product fractions were combined and the volume was reduced to remove most of the MeCN. The water left behind was added saturated NaHCO3 and then extracted with EtOAc (3×15 mL). The organics were combined wash with saturated NaCl solution, dried over MgSO4, filtered and concentrated. Then the product was transferred to a 40 mL vial with MeCN. Water was added and the solution was freeze-dried. To the white solid obtained was then added a3 mL of a premixed 2:1 DCM:TFA solution and let stir for 30 min. The reaction was then conc and then. then dissolved in 3 mL of DMSO and then purified on HPLC: (HPLC condition: open-access Gilson using Trilution software with a Sunfire 5u C18(2) 100A. 50×30.00 mm 5 micron. 7.3-minute run (47 ml/min, 5% ACN/H2O, 0.1% TFA to 30% ACN/H2O, 0.1% TFA) with UV detection at 220 nm). Product fractions were combined and the volume was reduced to remove most of the MeCN. The water left behind was then passed though a 0.9 mmol Stratopheres SPE PL-HCO3 MP SPE column and then filtrated was then freeze dried to isolated 7-(3-azetidinyl)-5-(1-{[3-(trifluoromethyl)phenyl]acetyl}-2,3-dihydro-1H-indol-5-yl)-7H-pyrrolo[2,3-d]pyrimidin-4-amine (48 mg, 41.6% yield) as a white solid. LC/MS (ES) m/z=493.5 [M+H]+.

Provenance & Evidence