A variety of optically active C2-symmetric pyridine derivatives have been prepared from L- or D-tartaric acid as a chiral source via efficient coupling reactions of triflates with 2-picolyllithium reagents, and the utility of 17 and 18 as chiral ligands in the catalytic enantioselective addition of diethylzinc to benzaldehyde has been demonstrated (up to 41% ee). The synthetic procedure for the corresponding meso-isomer was also described.
ASJC Scopus subject areas
- Physical and Theoretical Chemistry
- Organic Chemistry
- Inorganic Chemistry