Ethyl Acetate → HCID 53883802, compound

Participants

Reaction Steps

2741 mg of 6-acetylamino-4-ethyl-β-carboline-3-carboxylic acid isopropyl ester is heated to 70° C. in 110 ml of dioxane with 3915 mg of Lawesson's reagent while being stirred. After cooling, it is mixed with 100 ml of ethyl acetate and washed with saturated sodium chloride solution. The organic phases are dried and concentrated by evaporation in a vacuum. The residue is chromatographed on silica gel with toluene+methanol=8+2. 1541 mg of 4-ethyl-6-thioacetylamino-β-carboline-3-carboxylic acid isopropyl ester with a melting point of 158-160° C. is obtained from the desired fractions.

Provenance & Evidence