Dimethyl Sulfoxide → HCID 14994957, compound

Participants

Reaction Steps

5.06 ml of dimethylsulfoxide was gradually dropped at -78° C. into a solution of 4.15 ml of oxalyl chloride in dichloromethane (50 ml), into which a dichloromethane solution of 5.05 g of 1-(1-cyano-1-methylethoxycarbonyl)-4-hydroxypiperidine was dropped. After agitation at the temperature for 1 hour, 16.57 ml of triethylamine was added, followed by agitation at room temperature for 1 hour. The reaction solution was filtered, washed with water, and dried with anhydrous magnesium sulfate. The solvent was distilled off and the resultant residue was purified by silica gel column chromatography (elution solvent: ethyl acetate:n-hexane=1:9), thereby obtaining 3.9 g of the intended compound.

Provenance & Evidence