Trifluoroacetic acid → Diethyl 1-[(2S)-1-aminopropan-2-yl]-1H-pyrrolo[2,3-b]pyridine-2,6-dicarboxylate

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Reaction Steps

To a solution of diethyl 1-{(2S)-1-[(tert-butoxycarbonyl)amino]propan-2-yl}-1H-pyrrolo[2,3-b]pyridine-2,6-dicarboxylate (3.00 g, 7.15 mmol) in CH2Cl2 (20 mL) is added TFA (10 mL). The mixture is stirred at room temperature for 3 hr then is concentrated under reduced pressure. The residue is taken up in ethyl acetate and is washed with brine, is dried (Na2SO4) and concentrated in vacuo to afford the title compound (2.17 g) which is used in the next step without purification.

Provenance & Evidence