Methanol → methyl 4-chloro-2,6-dimethyl-5-((2-(trimethylsilyl)ethoxy)methyl)-5H-pyrrolo[3,2-d]pyrimidine-7-carboxylate

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Reaction Steps

To a well stirred mixture of 4-chloro-2,6-dimethyl-5-{[2-(trimethylsilyl)ethoxy]methyl}-5H-pyrrolo[3,2-d]pyrimidine-7-carbaldehyde from example A10 (9.49 g; 27.90 mmol), MeOH (50 mL), KCN (6.00 g; 92.10 mmol) and MnO2 (35.60 g, 383.30 mmol) acetic acid (1.68 g; 27.90 mmol) is added at ambient temperature. After 4 hours the dark mixture is filtered through Celite and the solvent is removed under reduced pressure. The residue is purified by column chromatography on silica gel (cyclohexane:ethylacetate/9:1) affording the title compound as an pale yellow oil.

Provenance & Evidence