Efficient Copper-Catalyzed Synthesis of<i>N</i>-Alkylanthranilic Acids<i>via</i>an<i>ortho</i>-Substituent Effect of the Carboxyl Group of 2-Halobenzoic Acids at Room Temperature
We have developed an efficient copper‐catalyzed method for the synthesis of N‐alkylanthranilic acids. The protocol uses inexpensive copper(I) iodide/racemic 1,1′‐binaphthyl‐2,2′‐diol (rac‐BINOL) as the catalyst/ligand system, readily available 2‐halobenzoic acids and aliphatic amines as the starting materials, the coupling reactions were performed at room temperature, and various functionalities in