3-Oxobenzofuranyl-2-idenyl, haloacetic acids

Details 3-Oxobenzofuranyl-2-idenyl, haloacetic acids 3-Oxobenzofuranyl-2-idenyl, haloacetic acids

1978-02-09

1979-05-15

Trousof, Natalie

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

2603067R, 260307FA, 26032634, 26034622, 26034673, 544 54, 544 58, 544 96, 544153, 544333, 544376, 548300, 546196, C07D30783

Patent

active

041547438

ABSTRACT:
Novel halogeno-benzofuranone-carboxylic acids and a novel process for their preparation by reacting substituted or unsubstituted phenols with dihalogenomaleic anhydrides or derivatives thereof are described. The novel halogeno-benzofuranone-carboxylic acids are valuable intermediates for the preparation of pharmaceutical active compounds having an antiallergic action or for the preparation of biocidal active compounds for combating plant and animal pests, in particular phytopathogenic fungi and bacteria.

REFERENCES:
patent: 3629290 (1971-12-01), Cairns et al.
patent: 3816467 (1974-06-01), Wright
Chem. Abst. 53, 5186d, (1959).
E. Ziegler et al., Liebigs Ann. Chem. 1973, pp. 1552-1556.

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