Synthesis of pincer-type N-heterocyclic carbene palladium complexes with a hemilabile ligand and their application in cross-coupling catalysis
作者:Vivienne Leigh、Wadih Ghattas、Helge Mueller-Bunz、Martin Albrecht
DOI:10.1016/j.jorganchem.2014.05.022
日期:2014.11
C-bidentate carbene complex 4. Subsequent ester hydrolysis preserved the bidentate coordinationmode and yielded complex 5 with a pending COOH group exclusively. However, when ester deprotection was carried out prior to metalation, the N,C,O-tridentate pincer-type coordinated palladiumcomplex 7 was obtained. Proton-abstraction of the dangling COOH group in the bidentate ligand of complex 5 by treatment