SYNTHESIS OF N,N'-DIALKYLQUINACRIDONES UNDER THE CONDITIONS OF HETEROGENEOUS CATALYSIS

Article abstract of DOI:10.1007/BF00519149

Alkylation of quinacridone in a heterogeneous medium in the presence of catalytic amounts of quaternary ammonium salts was used to synthesize N,N'-dialkyl derivatives with yields of 80-92percent.Performance of the reaction with phase transfer catalysts allows the use of alkylsulfates and alkylsulfonates besides alkyl halides.The use of a branched alkylating agent (isopropyl iodide) increases, due to steric factors, the reaction time, and reduces the yield of the product of alkylation.