Raul Pereira, Lukas Pfeifer, Jean Fournier, Véronique Gouverneur and Ján Cvengroš
Org. Biomol. Chem., 2017,15, 628-633
DOI:
10.1039/C6OB02359B,
Paper
The typically planar amide when incorporated into bicyclic systems can undergo a significant distortion from planarity resulting in physical properties and reactivity that deviate from classical amide behaviour. Herein, we report a succinct protocol that utilises potassium permanganate to selectively α-oxygenate the benzylic position of ethano-Tröger's base derivatives to yield a new class of twisted bisamides. Additionally, we report the first synthesis of an ethano-Tröger's base derivative bearing substituents in the positions ortho to the nitrogen atoms.