Potassium Phosphate, Tribasic → 1-[2-[3-(3-methanesulfonyl-pyrrolidin-1-yl)-phenyl]-5-(2-trimethylsilanyl-ethoxymethyl)-5H-pyrrolo[2,3-b]pyrazin-7-yl]-2,2-dimethyl-propan-1-one

Participants

Reaction Conditions

Reaction Steps

A mixture of 1,1,2,2,3,3,4,4,4-nonafluoro-butane-1-sulfonic acid 3-[7-(2,2-dimethyl-propionyl)-5-(2-trimethylsilanyl-ethoxymethyl)-5H-pyrrolo[2,3-b]pyrazin-2-yl]-phenyl ester (120 mg, 0.17 mmol), 3-methanesulfonyl-pyrrolidine (˜40 mg, 0.26 mmol), Pd2(dba)3 (8 mg, 0.009 mmol), Xantphos (11 mg, 0.02 mmol), and K3PO4 (72 mg, 0.34 mmol) in toluene (1.5 mL) was stirred in a sealed tube under argon at 115° C. overnight. The resulting mixture was partitioned between ethyl acetate and water. The combined organic layers were dried over Na2SO4 and concentrated. The crude product was purified by flash chromatography using 4 g of silica gel and 20-100% EtOAc in hexanes as eluant to afford 0.08 g of impure 1-[2-[3-(3-methanesulfonyl-pyrrolidin-1-yl)-phenyl]-5-(2-trimethylsilanyl-ethoxymethyl)-5H-pyrrolo[2,3-b]pyrazin-7-yl]-2,2-dimethyl-propan-1-one. M+Na 579.

Provenance & Evidence