Polystyrene-supported dicyclohexylphenylphosphine adducts of amine- and phosphite-based palladacycles in the Suzuki coupling of aryl chlorides
Polystyrene-supported dicyclohexylphenylphosphine adducts of amine- and phosphite-based palladacycles in the Suzuki coupling of aryl chlorides
The polystyrene-immobilised palladacyclic complexes [Pd(TFA)(kappa(2)-N,C-C(6)H(4)CH(2)NMe(2)){P(C(6)H(4)-4-PS)Cy(2)}] and [PdCl(kappa(2)-P,C-{P(OC(6)H(2)-2,4-(t)Bu(2))(OC(6)H(3)-2,4-(t)Bu(2))(2)}{P(C(6)H(4)-4-PS)Cy(2)}](PS = polystyrene) and the homogeneous analogues [Pd(TFA)(kappa(2)-N,C-C(6)H(4)CH(2)NMe(2))(PPhCy(2))] and PdCl(kappa(2)-P,C-{P(OC(6)H(2)-2,4-(t)Bu(2))(OC(6)H(3)-2,4-(t)Bu(2))(2)}(PPhCy(2))] were synthesised and characterised. The X-ray structure of one of the homogeneous analogues, [Pd(TFA)(kappa(2)-N,C-C(6)H(4)CH(2)NMe(2))(PPhCy(2))] was determined. All the complexes have been tested and show good activity in the Suzuki coupling of aryl chloride substrates. While the polystyrene-immobilised complexes are not recyclable, they are easily extracted and show low levels of palladium leaching.
high-activity catalysts, bond-forming reactions, triarylphosphite
complexes, c-c, amination, coordination, chloroarenes
991-995
Bedford, Robin B.
42532c45-cb80-48cd-9e93-8c2d5059eabe
Coles, Simon J.
3116f58b-c30c-48cf-bdd5-397d1c1fecf8
Hursthouse, Michael B.
57a2ddf9-b1b3-4f38-bfe9-ef2f526388da
Scordia, Véronique J.M.
be83386f-5147-43aa-8d76-f750e938ba83
2005
Bedford, Robin B.
42532c45-cb80-48cd-9e93-8c2d5059eabe
Coles, Simon J.
3116f58b-c30c-48cf-bdd5-397d1c1fecf8
Hursthouse, Michael B.
57a2ddf9-b1b3-4f38-bfe9-ef2f526388da
Scordia, Véronique J.M.
be83386f-5147-43aa-8d76-f750e938ba83
Bedford, Robin B., Coles, Simon J., Hursthouse, Michael B. and Scordia, Véronique J.M.
(2005)
Polystyrene-supported dicyclohexylphenylphosphine adducts of amine- and phosphite-based palladacycles in the Suzuki coupling of aryl chlorides.
Dalton Transactions, (5), .
(doi:10.1039/b415286g).
Abstract
The polystyrene-immobilised palladacyclic complexes [Pd(TFA)(kappa(2)-N,C-C(6)H(4)CH(2)NMe(2)){P(C(6)H(4)-4-PS)Cy(2)}] and [PdCl(kappa(2)-P,C-{P(OC(6)H(2)-2,4-(t)Bu(2))(OC(6)H(3)-2,4-(t)Bu(2))(2)}{P(C(6)H(4)-4-PS)Cy(2)}](PS = polystyrene) and the homogeneous analogues [Pd(TFA)(kappa(2)-N,C-C(6)H(4)CH(2)NMe(2))(PPhCy(2))] and PdCl(kappa(2)-P,C-{P(OC(6)H(2)-2,4-(t)Bu(2))(OC(6)H(3)-2,4-(t)Bu(2))(2)}(PPhCy(2))] were synthesised and characterised. The X-ray structure of one of the homogeneous analogues, [Pd(TFA)(kappa(2)-N,C-C(6)H(4)CH(2)NMe(2))(PPhCy(2))] was determined. All the complexes have been tested and show good activity in the Suzuki coupling of aryl chloride substrates. While the polystyrene-immobilised complexes are not recyclable, they are easily extracted and show low levels of palladium leaching.
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Published date: 2005
Keywords:
high-activity catalysts, bond-forming reactions, triarylphosphite
complexes, c-c, amination, coordination, chloroarenes
Identifiers
Local EPrints ID: 20719
URI: http://eprints.soton.ac.uk/id/eprint/20719
ISSN: 1477-9226
PURE UUID: 18fe7e28-73c0-4f9b-b1e3-988ac033a85a
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Date deposited: 01 Mar 2006
Last modified: 16 Mar 2024 03:05
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Contributors
Author:
Robin B. Bedford
Author:
Véronique J.M. Scordia
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