Process for the production of thionaphthene from thionaphthene s

Details Process for the production of thionaphthene from thionaphthene s Process for the production of thionaphthene from thionaphthene s

1980-12-22

1982-11-02

Jiles, Henry R.

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

C07D33354

Patent

active

043574726

ABSTRACT:
A process for the production of thionaphthene by dissociation of thionaphthene sulfonic acid such as obtained, for example, in the partial sulfonation of naphthalene fractions of coal tar, characterized in that the density of the reaction mixture is maintained essentially constant during the entire duration of the dissociation reaction and the thionaphthene formed is not removed by azeotropic distillation; a product of high purity is obtained in high yield in a substantially reduced reaction time.

REFERENCES:
patent: 4098838 (1978-07-01), Grigoleit

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