Formal group insertion into aryl C‒N bonds through an aromaticity destruction-reconstruction process

Dandan Han, Qiuqin He and Renhua Fan ()
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Dandan Han: Fudan University
Qiuqin He: Fudan University
Renhua Fan: Fudan University

Nature Communications, 2018, vol. 9, issue 1, 1-7

Abstract: Abstract Given the abundance and the ready availability of anilines, the selective insertion of atoms into the aryl carbon–nitrogen bonds will be an appealing route for the synthesis of nitrogen-containing aromatic molecules. However, because aryl carbon–nitrogen bonds are particularly inert, anilines are normally activated by conversion to more reactive intermediates such as aryldiazonium salts to achieve functionalization of the aryl carbon–nitrogen bonds, but the nitrogen atom is usually not incorporated into products, instead being discarded. The selective insertion of groups into aryl carbon–nitrogen bonds remains an elusive challenge and an unmet need in reaction design. Here we show an aromaticity destruction-reconstruction process that selectively inserts a trimethylenemethane (TMM) group into the aromatic carbon–nitrogen bond of anilines concomitant with a benzylic carbon–hydrogen bond functionalization. This process provides a transformative mode for anilines, and the insertion products are versatile precursor to various nitrogen-containing aromatic molecules through simple conversions.

Date: 2018
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DOI: 10.1038/s41467-018-05637-z

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