Direct Access to Anthranilic Acid Derivatives via CO2 Incorporation Reaction Using Arynes.

[摘要]：CO2 was found to be directly convertible into anthranilic acid derivs. of great synthetic value through a three-component coupling using arynes and secondary amines. Zwitterions arising from nucleophilic attack of amines to arynes serve as key intermediates in the coupling.

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