HETEROCYCLIC BIOANTIOXIDANTS. 5. STABILIZATION OF 3-NITRO-4-COUMARINYLTHIOLATE BY AMMONIUM COUNTERIONS

Article abstract of DOI:10.1007/BF00529874

Thiolation of 3-nitro-4-chlorocoumarin in the presence of a substituted or unsubstituted ammonium ion can be used to isolate 3-nitro-4-coumarinylthiolates, which are stabilized by the corresponding ammonium cation, while 3-nitro-4-mercaptocoumarin or its