Dioxane adduct of 2-hydroxynaphthalene-6-carboxylic acid and pro

Details Dioxane adduct of 2-hydroxynaphthalene-6-carboxylic acid and pro Dioxane adduct of 2-hydroxynaphthalene-6-carboxylic acid and pro

1989-05-09

1990-05-15

Chan, Nicky

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

562467, C07D31912

Patent

active

049259598

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-carboxylic 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.
Tanonaka et al., C.A., 106--120361x (1987).

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