2-Bromopropane → 1-benzenesulfonyl-2-[2-cyclopentyl-1-(4-methanesulfonyl-phenyl)-vinyl]-5-isopropoxy-1H-pyrrolo[2,3-b]pyridine

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Reaction Conditions

Reaction Steps

Potassium carbonate (430 mg, 3.11 mmol) was added to a solution of 1-benzenesulfonyl-2-[2-cyclopentyl-1-(4-methanesulfonyl-phenyl)-vinyl]-1H-pyrrolo[2,3-b]pyridin-5-ol (prepared as in Example 13, 325 mg, 0.62 mmol) in N,N-dimethylformamide (2 mL) at room temperature and stirred for 30 min and then 2-bromopropane (0.13 mL, 1.24 mmol) was added. The mixture was then heated to 60° C. and stirred for 3 h. The resulting mixture was diluted with ethyl acetate (150 mL), washed with brine, dried over anhydrous sodium sulfate and then concentrated in vacuo to afford 1-benzenesulfonyl-2-[2-cyclopentyl-1-(4-methanesulfonyl-phenyl)-vinyl]-5-isopropoxy-1H-pyrrolo[2,3-b]pyridine (310 mg, 100%) as a light yellow solid which was used in the next step without further purification: LC/MS m/e calcd for C30H32N2O5S2 [M+H]+ 565.73, observed 565.2.

Provenance & Evidence