Metal-free visible-light synthesis of quaternary α-perfluoroalkyl aldehydes via an enamine intermediate†
Haruna Matsui,Mao Murase,Tomoko Yajima
Organic & Biomolecular Chemistry Pub Date : 09/19/2018 00:00:00 , DOI:10.1039/C8OB02058B
Abstract

Visible-light induced perfluoroalkylation of the α-position of aldehydes via enamines was developed. The reaction proceeds by electron donor–acceptor complexation of the enamine and perfluoroalkyl iodide without any additional redox catalyst. A variety of perfluoroalkyl groups are tolerated to give various quaternary α-perfluoroalkyl aldehydes. An example using proline-derived chiral amine gives high enantioselectivity.

Graphical abstract: Metal-free visible-light synthesis of quaternary α-perfluoroalkyl aldehydes via an enamine intermediate