Sodium Chlorite → 1-Benzyl-6-chloro-2-isopropyl-1H-pyrrolo[3,2-c]pyridine-3-carboxylic acid

Participants

Reaction Steps

To a solution of 1-benzyl-6-chloro-2-isopropyl-1H-pyrrolo[3,2-c]pyridine-3-carbaldehyde (Compound 14, 146 mg, 0.47 mmol) in t-BuOH (15 ml) and 2-methyl-2-butene (10 ml) was added a solution of NaH2PO4 (1.41 g, 11.8 mmol) and NaClO2 (80%, 1.05 g, 9.3 mmol) in H2O (10 ml). The mixture was stirred at room temperature for 16 h and was extracted with EtOAc (×2). The combined organic layer was washed with brine, dried over Na2SO4, and concentrated in vacuo. The residue was purified by chromatography on silica gel (0→100% EtOAc-hexanes, then 0→30% MeOH—CH2Cl2) to yield the title compound as a yellow solid.

Provenance & Evidence