Three-component coupling using arynes and aminosilanes for ortho-selective double functionalization of aromatic skeletons

J Org Chem. 2008 Jul 18;73(14):5452-7. doi: 10.1021/jo800761b. Epub 2008 Jun 21.

Abstract

Arynes were found to couple with aminosilanes and carbonyl compounds in the presence of benzoic acid to provide 2-aminobenzhydrols. Sulfonylimines could also be applied to the reaction, enabling amino and aminomethyl moieties to be incorporated into contiguous positions of aromatic skeletons. Only a small amount of the three-component coupling product was obtained in the absence of benzoic acid, which confirms its vital role in the present reaction.