Ring chlorination of m-xylene to intermediates for agricultural and pharmaceutical agents and polymer precursors in presence of Friedel-Crafts catalyst uses benzothiazepine or benzothiazocine compound as co-catalyst

摘要

In ring chlorination of m-xylene with chlorine (Cl2) in the presence of Friedel-Crafts catalysts, benzo-condensed thiazepines or thiazocines are used as co-catalysts (I).