Process for producing isatoic anhydrides

Details Process for producing isatoic anhydrides Process for producing isatoic anhydrides

1998-06-05

1999-11-09

Shah, Mukund J.

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

Organic compounds

Chalcogen in the nitrogen containing substituent

C07D26514

Patent

active

059817496

ABSTRACT:
A process for producing isatoic anhydrides of the formula (II): ##STR1## which comprises reacting an anthranilic acid of formula (I): ##STR2## or a salt thereof with phosgene using a mixed solvent of water and an organic solvent miscible with water and inert to the reaction;

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S.M. Gadekar et al., "Some Halogenated 1,2,3-Benzotriazin -4(3H)ones", The Journal of Organic Chemistry, vol. 26, No. 2, Feb. 24, 1961, pp. 613-615.

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