Method of preparing bis-(chloromethyl)-tetrachlorobenzenes

Details Method of preparing bis-(chloromethyl)-tetrachlorobenzenes Method of preparing bis-(chloromethyl)-tetrachlorobenzenes

1979-10-05

1981-05-19

Vertiz, O. R.

Organic compounds -- part of the class 532-570 series

Organic compounds

Halogen containing

C07C 2514

Patent

active

042686989

ABSTRACT:
Process of preparing bis-chloromethyl tetrachlorobenzene of the formula ##STR1## In a first stage xylene is contacted with chlorine for formation of tetrachloroxylene, in the presence of iron chloride catalyst. In a second stage the tetrachloroxylene is contacted with chlorine for formation of (I), in the presence of radical catalyst. According to the invention, the second stage is performed in the presence of iron chloride catalyst from the first stage and in the presence of hexamethylenetetramine for complexing with the iron chloride catalyst. Thereby the iron chloride catalyst does not interfere with the second stage.

REFERENCES:
patent: 2817632 (1957-12-01), Mayor
patent: 2979448 (1961-04-01), Miller

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