A new synthetic method to introduce chlorine atoms in aromatic rings by using hexachloroethane is proposed in this paper. At low temperature
the lithium (potassium) reagent is made from substituted aromatics. Then
this reagent reacts with hexachloroethane to obtain chlorinated aromatic hydrocarbons with high conversion rate. In this way
the synthesis of three different intermediates
which are ortho-no-fluorine atoms substituted
one fluorine atom substituent
double fluorine atom substituent
are studied. The products are characterized by mass and element analysis. The advantages of this method are high yield
good purity and lower cost
etc.
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references
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