p-Toluenesulfonyl isocyanate → HCID 13361939, compound

Participants

Reaction Steps

26.3 g of 3,4-dichlorophenylhydroxymalonic acid diamide were dissolved in 350 ml of ethyl acetate at 65° C., and a solution of 19.7 g of p-toluenesulphonyl isocyanate was slowly added. After the mixture had been kept at 70° C. for 1 hour, it was cooled and filtered off with suction. 14 g of 3,4-dichlorophenyl-p-toluenesulphonylaminocarbonyloxy-malonic acid diamide (melting point 178° C., decomposition) were obtained. Further product was to be isolated from the mother liquor.

Provenance & Evidence