Diastereoselective synthesis of atropisomers containing two non-biaryl stereogenic axes: stereochemical relay through stereogenic centres in dihydrostilbene-2,2 '-dicarboxamides

Clayden, J., Westlund, N., Frampton, C.S. and Helliwell, M. (2006) Diastereoselective synthesis of atropisomers containing two non-biaryl stereogenic axes: stereochemical relay through stereogenic centres in dihydrostilbene-2,2 '-dicarboxamides. Organic & Biomolecular Chemistry, 4 (3), 455-461. (doi:10.1039/b514561a).

Record type: Article

Abstract

Addition of laterally lithiated tertiary aromatic amides to benzaldimines controls the formation of a new stereogenic centre adjacent to the benzaldimine aromatic ring. Drawing on the fact that such amino-substituted stereogenic centres may themselves control the conformation of amides, with amido-substituted benzaldimines we found it becomes possible to relay stereochemistry from one amide to another via this intervening stereogenic Centre. A group of dihydrostilbene-2,2'-dicarboxamide derivatives bearing one or two stereogenic axes are made by this method, which demonstrates the use of combined kinetic and thermodynamic control for the relay of stereochemical information.

This record has no associated files available for download.