Tetrabutylammonium Fluoride → 2-{2-[2-cyclopentyl-1-(4-methanesulfonyl-phenyl)-vinyl]-1H-pyrrolo[2,3-b]pyridin-5-yloxy}-2-methyl-propionic acid ethyl ester

Participants

Reaction Steps

A solution of 2-{1-benzenesulfonyl-2-[2-cyclopentyl-1-(4-methanesulfonyl-phenyl)-vinyl]-1H-pyrrolo[2,3-b]pyridin-5-yloxy}-2-methyl-propionic acid ethyl ester (1.34 g, 2.11 mmol) in tetrahydrofuran (0.5 mL) and a tetrabutylammonium fluoride solution in tetrahydrofuran (1 M, 8.0 mL, 8.0 mmol) was stirred at room temperature for 12 h. The resulting mixture was diluted with ethyl acetate (150 mL), washed with a saturated aqueous ammonium chloride solution and brine, dried over anhydrous sodium sulfate and then concentrated in vacuo to afford 2-{2-[2-cyclopentyl-1-(4-methanesulfonyl-phenyl)-vinyl]-1H-pyrrolo[2,3-b]pyridin-5-yloxy}-2-methyl-propionic acid ethyl ester (1.04 g, quant.) as a white solid: LC/MS m/e calcd for C27H32N2O5S [M+H]+ 497.63, observed 497.4.

Provenance & Evidence