Diisopropylethylamine → N-(1-tert-Butoxycarbonyl-1H-pyrrolo[2,3-b]pyridin-4-yl)-1-benzyloxycarbonyl-4-piperidinecarboxamide

Participants

Reaction Steps

N-Benzyloxycarbonylisonipecotyl chloride (5 g) was added to a solution of 4-amino-1-tert-butoxycarbonyl-1H-pyrrolo[2,3-b]pyridine (3 g) and diisopropylethyamine (2.16 g) in acetonitrile (40 ml) and the mixture was stirred at room temperature for 2 hours. The reaction mixture was poured into ice-water and extracted with chloroform. The residue obtained by water washing, drying and then concentration under reduced pressure was purified by silica gel column chromatography to give 6.3 g of N-(1-tert-butoxycarbonyl-1H-pyrrolo-[2,3-b]pyridin-4-yl)-1-benzyloxycarbonyl-4-piperidinecarboxamide.

Provenance & Evidence