Dimethyl Sulfoxide → [4-((R)-2-formyl-6-oxo-piperidin-1-yl)-but-2-ynyloxy]-acetonitrile

Participants

Reaction Conditions

Reaction Steps

EDCI (288 mg, 1.50 mmol) was added to a solution of [4-((R)-2-hydroxymethyl-6-oxo-piperidin-1-yl)-but-2-ynyloxy]-acetonitrile (118 mg, 0.50 mmol) in benzene (4 mL). The reaction mixture was cooled to 0° C. and DMSO (0.14 mL, 2.0 mmol) was added. After 5 min at 0° C., pyridinium trifluoroacetate (106 mg, 0.55 mmol) was added. The reaction was allowed to warm to rt and then was stirred at rt for 3 h. The solution was decanted from the oily residue and the residue was washed with benzene (3×5 mL). The combined benzene phases were concentrated in vacuo to afford crude [4-((R)-2-formyl-6-oxo-piperidin-1-yl)-but-2-ynyloxy]-acetonitrile, which was used without further purification.

Provenance & Evidence