Intermediates for preparing hydroxyphenylpyridazinones

Details Intermediates for preparing hydroxyphenylpyridazinones Intermediates for preparing hydroxyphenylpyridazinones

1979-02-02

1981-06-09

Jiles, Henry R.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

549239, C07D30758

Patent

active

042724406

ABSTRACT:
5-(5'-Halo-2'-methoxyphenyl)-3,4-dihalo-2(5H)-furanones are prepared by a Friedel-Crafts reaction using a p-haloanisole and a mucohalic acid in the presence of aluminum chloride. They are used as chemical intermediates for preparing hydroxyphenylpyridazinones.

REFERENCES:
patent: 3193552 (1965-07-01), Dury et al.
patent: 4053601 (1977-10-01), Coates et al.

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