Water → 2-(4-Benzyloxy-2,5-difluoro-phenyl)-(1-triisopropylsilanyl-1H-pyrrolo[2,3-b]pyridin-3-yl)-methanol

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Reaction Steps

To 1-Benzyloxy-4-bromo-2,5-difluoro-benzene (47, 0.84 g, 2.80 mmol) in tetrahydrofuran (15.0 mL) and ether (15.0 mL), under an atmosphere of nitrogen at −78° C., n-butyllithium (1.20 mL, 2.50 M in hexane) was added slowly. After 20 minutes, 1-Triisopropylsilanyl-1H-pyrrolo[2,3-b]pyridine-3-carbaldehyde (8, 0.82 g, 0.0027 mol, prepared as described in Example 5) was added to the reaction. After 20 minutes, the reaction was allowed to warm to room temperature for 10 minutes, then poured into water and extracted with ethyl acetate. The organic layer was dried over anhydrous sodium sulfate and filtered. The filtrate was concentrated and purified with silica gel column chromatography eluting with 20% ethyl acetate in hexane to a white solid (48, 10 g, 70.0%).

Provenance & Evidence