2-Bromo-5-(2-trimethylsilanyl-ethoxymethyl)-5H-pyrrolo[2,3-b]pyrazine-7-carboxylic acid [(R)-2-(3-cyano-azetidin-1-yl)-1-methyl-2-oxo-ethyl]amide → HCID 71288910, compound

Participants

Reaction Conditions

Reaction Steps

To a solution of 1-methyl-3-tributylstannanyl-1H-thieno[3,2-c]pyrazole (111 mg, 0.26 mmol) and 2-bromo-5-(2-trimethylsilanyl-ethoxymethyl)-5H-pyrrolo[2,3-b]pyrazine-7-carboxylic acid [(R)-2-(3-cyano-azetidin-1-yl)-1-methyl-2-oxo-ethyl]-amide (120 mg, 0.24 mmol) in DMF (1.2 mL) were added Pd(PPh3)4 (14 mg, 0.012 mmol) and copper(I) iodide (9 mg, 0.05 mmol). The yellow reaction mixture was purged with argon then heated at 80° C. for 1.5 h then cooled to room temperature, quenched with sat NH4Cl and extracted with EtOAc (2×). The combined organics were washed with sat LiCl and brine then dried over MgSO4 and concentrated. The crude residue was purified by silica gel chromatography with 50% to 100% EtOAc/heptane to provide 131 mg (98%) of 2-(1-methyl-1H-thieno[3,2-c]pyrazol-3-yl)-5-(2-trimethylsilanyl-ethoxymethyl)-5H-pyrrolo[2,3-b]pyrazine-7-carboxylic acid [(R)-2-(3-cyano-azetidin-1-yl)-1-methyl-2-oxo-ethyl]-amide as an off-white solid.

Provenance & Evidence