Eta2-dba complexes of Pd(0): the substituent effect in Suzuki-Miyaura coupling.
The influence of aryl substituents in dibenzylidene acetone (dba) ligands, for Pd(0) complexes, has been evaluated for Suzuki-Miyaura cross-coupling reactions. Electron-withdrawing substituents such as NO(2) or CF(3) deactivate the catalyst species whereas strongly donating substituents such as OMe increase catalytic activity over that of unsubstituted dba ligands. [reaction: see text]
Fairlamb
Ian J S
IJ
Department of Chemistry, University of York, Heslington, York YO10 5DD, U.K. ijsf1@york.ac.uk
Kapdi
Anant R
AR
Lee
Adam F
AF