Substituent effects for the olefination of aldehydes by zirconium metalloazines

Article abstract of DOI:10.1021/om00145a030

The reaction between Zr(IV) metalloazines and aldehydes affords unsymmetrical olefins and azines. Relative rates for formation of these species (and corresponding yields) were found to depend on the electron-donating ability of the metalloazine and on the electron-accepting ability of the aldehyde. Second-order rate constants were determined, and a reaction mechanism for olefin synthesis is proposed based on observed electronic effects.