PREPARATION OF HALOGEN SUBSTITUTED AROMATIC COMPOUNDS

摘要

Halogen substituted aromatic compounds of the formula wherein Y is selected from the group CO2H, COF, COCl, COBr, CF3, CN, NCO, or F, and X and X min are independently hydrogen or a halogen selected from the group F-, Cl- and Br-, at least one of X and X min being halogen; may be prepared by the liquid phase reaction of a brominating agent, at temperatures below about 190 DEG Celsius, with a correspondingly substituted cyclohexene or cyclohexadiene.