The redox-A3 reaction
This highlight details the recent emergence of a new type of A3 reaction (three-component condensation of an amine, an aldehyde and an alkyne). In contrast to the classic A3 coupling process, the redox-A3 reaction incorporates an iminium isomerization step and leads to amine α-alkynylation. The overall transformation is redox-neutral by virtue of a combined reductive N-alkylation/oxidative C–H bond functionalization.
- This article is part of the themed collection: Reviews & Highlights in Organic Chemistry Frontiers for 2014