Process for ring-chlorinating toluene

Details Process for ring-chlorinating toluene Process for ring-chlorinating toluene

1985-08-29

1987-03-03

Trousof, Natalie

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

Organic compounds

Halogen containing

570210, C07C 1712

Patent

active

046477098

ABSTRACT:
In the ring chlorination of toluene, a particularly high proportion of p-chlorotoluene is obtained by using in addition to the customary Lewis acid catalysts as cocatalyst a chlorination product of 2,8-dimethylphenoxathiin which comprises in the main 1,3,7,9-tetrachloro-2,8-dimethylphenoxathiin of the formula ##STR1##

REFERENCES:
patent: 4069263 (1978-01-01), Lin
patent: 4190609 (1980-02-01), Lin
patent: 4289916 (1981-09-01), Nakayama et al.
Organic Syntheses, Coll. vol. 2, pp. 485-486.

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