Potassium Hydroxide → HCID 21449315, compound

Participants

Reaction Steps

60 ml of sodium hypochlorite solution (13%) is added dropwise at ca. 30° C internal temperature, with continuous stirring, to a solution of 3 g of potassium hydroxide in 150 ml of ethanol and 7 g of 2-amino-4-(4'-methylphenylthio)-nitrobenzene. After completion of the addition, stirring is continued for half an hour at room temperature; the precipitated product is filtered off with suction and then washed with 200 ml of water. Recrystallisation from ethanol yields 5.8 g (= 83.5% of theory) of 5-(4'-methylphenylthio)-benzofurazan-N-oxide, M.P. 86°-88° C.

Provenance & Evidence