Dimethylformamide → HCID 178481755, compound

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Reaction Steps

To a flask was added 2-(2-(1-methyl-1,6-dihydropyrazolo[3,4-d]pyrrolo[2,3-b]pyridin-7-yl)-1H-pyrrol-1-yl)acetic acid (0.125 g, 0.423 mmol, Example #AN.1.2) and oxalyl chloride (0.275 mL, 0.550 mmol) in DCM (4 mL) followed by a drop of DMF. The mixture was stirred for about 40 min at rt and then concentrated to dryness to afford 2-(2-(1-methyl-1,6-dihydropyrazolo[3,4-d]pyrrolo[2,3-b]pyridin-7-yl)-1H-pyrrol-1-yl)acetyl chloride. The mixture was used immediately in the next step. Analytics were performed by quenching a sample with MeOH and methyl ester is the observed (M+H)+: LC/MS (Table 2, Method c) Rt=1.30 min; MS m/z 310 (M+H)+.

Provenance & Evidence