Dimethyl Sulfoxide → 7-((R)-2-formyl-6-oxo-piperidin-1-yl)-hept-5-enoic acid methyl ester

Participants

Reaction Conditions

Reaction Steps

EDCI (36 mg, 0.19 mmol) and DMSO (18 μL, 0.25 mmol) were added sequentially to a solution of 7-((R)-2-hydroxymethyl-6-oxo-piperidin-1-yl)-hept-5-enoic acid methyl ester (16.7 mg, 0.062 mmol) in benzene (1.0 mL) at rt. The mixture was cooled to 0° C. and pyridinium trifluoroacetate (13.2 mg, 0.068 mmol) was added. The reaction was allowed to warm to rt and then was stirred at rt for 2.5 h. The solution was decanted from the oily residue and the residue was washed with benzene (3×1 mL). The combined benzene phases were concentrated in vacuo to afford crude 7-((R)-2-formyl-6-oxo-piperidin-1-yl)-hept-5-enoic acid methyl ester that was used without further purification.

Provenance & Evidence