Method for chlorination of methylated aromatic compounds

Details Method for chlorination of methylated aromatic compounds Method for chlorination of methylated aromatic compounds

1992-11-02

1994-01-18

Valentine, Donald R.

Chemistry: electrical and wave energy

Processes and products

Processes of treating materials by wave energy

20415765, 20415794, 2041581, 20415799, C07C 1700

Patent

active

052797198

ABSTRACT:
A process for chlorination of methylated aromatic compounds in a titanium tetrachloride is disclosed. The ring chlorination is first carried out by reacting said methylated aromatic compounds with chlorine gas under reduced light conditions, and then the side chain chlorination is carried out by reacting the resulting mixture with chlorine gas under light irradiation conditions. The process ensures continuous chlorination of aromatic rings and side chains of methylated aromatic compounds at a high yield without using any catalysts or perilous solvents such as carbon tetrachloride.

REFERENCES:
patent: 4000052 (1976-12-01), Blumenfeld
patent: 4029560 (1977-06-01), Yoshinaka et al.

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