4-Toluenesulfonyl chloride → HCID 54142348, compound

Participants

Reaction Steps

1 g of 4-methoxymethyl-6-(triisopropylsilyloxy)-beta-carboline-3-carboxylic acid isopropyl ester, 132 mg of 4-dimethylaminopyridine and 0.45 ml of triethylamine were mixed in 10 ml of dichloromethane at about 4° C. with 615 m of tosyl chloride and then stirred at room temperature for 1 hour. After 16 hours of standing at room temperature, it was diluted with dichloromethane and washed with saturated sodium bicarbonate solution and saturated sodium chloride solution. After chromatography on silica gel in the system of cyclohexane/ethyl acetate 1:1, 1.32 g of the title compound was obtained from the isolated organic phase.

Provenance & Evidence