Process for the preparation of a dioxane adduct of 2-hydroxynaph

Details Process for the preparation of a dioxane adduct of 2-hydroxynaph Process for the preparation of a dioxane adduct of 2-hydroxynaph

1990-02-14

1991-09-10

Anderson, Harold D.

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

8662, 562467, G07D31912

Patent

active

050475584

ABSTRACT:
The invention relates to the dioxane adduct of 2-hydroxynaphthalene-6-carboxylic acid which adduct comprises 1 mol of 1,4-dioxane and about 2 mol of 2-hydroxynaphthalene-6-carboxylic acid per mol. The invention further relates to a process for the preparation of this adduct, wherein the 2-hydroxynaphthalene-6-carboyxlic acid is dissolved in dioxane or a mixture thereof with water or with an organic solvent and then allowed to crystallize.

REFERENCES:
patent: 4329494 (1982-05-01), Montgomery
patent: 4393191 (1983-07-01), East
patent: 4618701 (1986-10-01), Neeb et al.

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