TY - JOUR
T1 - Polymer-supported carbene complexes of palladium
T2 - Well-defined, air-stable, recyclable catalysts for the heck reaction
AU - Schwarz, Jürgen
AU - Böhm, Volker P.W.
AU - Gardiner, Michael G.
AU - Grosche, Manja
AU - Herrmann, Wolfgang A.
AU - Hieringer, Wolfgang
AU - Raudaschl-Sieber, Gabriele
PY - 2000/5/15
Y1 - 2000/5/15
N2 - N-Heterocyclic dicarbene chelate complexes of formula [cis-CH2{N(H)C=C(H)N(R)C}2PdX2] (X = Br, I; R = (CH2)nOH; n = 2, 3) have been prepared and structurally characterized (for X = I, n = 2). The complexes were immobilized on a functionalized polystyrene support (Wang resin) through one of the oxygen centres. The complexes efficiently catalyze the Heck reaction of activated and non-activated arylbromides, are recyclable under aerobic conditions and exhibit hardly any leaching, which is in line with our theoretical investigations on ligand dissociation energies related to Pd0 and Pd11 centres.
AB - N-Heterocyclic dicarbene chelate complexes of formula [cis-CH2{N(H)C=C(H)N(R)C}2PdX2] (X = Br, I; R = (CH2)nOH; n = 2, 3) have been prepared and structurally characterized (for X = I, n = 2). The complexes were immobilized on a functionalized polystyrene support (Wang resin) through one of the oxygen centres. The complexes efficiently catalyze the Heck reaction of activated and non-activated arylbromides, are recyclable under aerobic conditions and exhibit hardly any leaching, which is in line with our theoretical investigations on ligand dissociation energies related to Pd0 and Pd11 centres.
KW - C-C coupling
KW - Carbene complexes
KW - Catalysts
KW - Immobilization
KW - Palladium
UR - http://www.scopus.com/inward/record.url?scp=0034659728&partnerID=8YFLogxK
U2 - 10.1002/(sici)1521-3765(20000515)6:10<1773::aid-chem1773>3.0.co;2-p
DO - 10.1002/(sici)1521-3765(20000515)6:10<1773::aid-chem1773>3.0.co;2-p
M3 - Article
AN - SCOPUS:0034659728
SN - 0947-6539
VL - 6
SP - 1773
EP - 1780
JO - Chemistry - A European Journal
JF - Chemistry - A European Journal
IS - 10
ER -