Process for the preparation of 3- and/or 5-substituted anthranil

Details Process for the preparation of 3- and/or 5-substituted anthranil Process for the preparation of 3- and/or 5-substituted anthranil

1992-04-30

1993-02-23

Shippen, Michael L.

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

Organic compounds

Carboxylic acids and salts thereof

C07C 5116

Patent

active

051892103

ABSTRACT:
Anthranilic acids substituted in the 3- and/or 5-position are valuable intermediates for the production of agricultural chemicals. These substituted anthranilic acids can be obtained in good yield without undesirable isomeric byproducts by the oxidative ring-opening of dihydroquinolin-4-ones or quinolin-2,4-diones with t-butyl hydroperoxide in the presence of a base.

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