Tetrahydrofuran → propane-1-sulfonic acid (2,4-difluoro-3-[5-(4,4,5,5-tetramethyl-[1,3,2]dioxaborolan-2-yl)-1H-pyrrolo[2,3-b]pyridine-3-carbonyl]-phenyl)-amide

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Reaction Steps

In a reaction flask, propane-1-sulfonic acid (2,4-difluoro-3-{hydroxy-[5-(4,4,5,5-tetramethyl-[1,3,2]dioxaborolan-2-yl)-1H-pyrrolo[2,3-b]pyridin-3-yl]-methyl}-phenyl)-amide (29, 0.155 g, 0.306 mmol) is combined with 10 mL of tetrahydrofuran and 3 mL of dichloromethane. Dess-Martin periodinane (0.648 g, 1.53 mmol) is added and the reaction is stirred at room temperature for 20 minutes. The reaction is mixed with 1N sodium thiosulfate, extracted with ethyl acetate and the organic layer dried and purified by silica gel column chromatography, eluting with a gradient of 20-100% ethyl acetate in hexanes. Appropriate fractions are combined and concentrated under vacuum to provide the desired compound. MS (ESI) [M+H+]+=506.29.

Provenance & Evidence