4-Hydroxybenzaldehyde → 4-[((3S)-1-tert-butoxycarbonyl-3-pyrrolidinyl)oxy]benzaldehyde

Beteiligte Stoffe

Reaktionsschritte

In 40 ml of tetrahydrofuran were dissolved 1.31 g of p-hydroxybenzaldehyde, 1.87 g of (3R)-1-tert-butoxycarbonyl-3-hydroxypyrrolidine and 2.88 g of triphenylphosphine. With stirring at room temperature, 1.91 g of diethyl azodicarboxylate was added to the thus prepared solution, and the mixture was stirred for 45 minutes. After distilling off the solvent, the resulting residue was purified by subjecting it to silica gel column chromatography using a benzene/ethyl acetate mixture as an elution solvent. In this way, 2.9 g of 4-[((3S)-1-tert-butoxycarbonyl-3-pyrrolidinyl)oxy]benzaldehyde was obtained in an oily form.

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