Abstract
AbstractWe report on a systematic study of the use of palladium nanoparticles immobilized on spherical polyelectrolyte brushes – Pd@SPB – for Heck‐ and Suzuki‐type coupling reactions. The spherical polyelectrolyte brush particles serving as carriers for the palladium nanoparticles consist of a solid polystyrene core with a radius of 46 nm onto which long chains of cationic polyelectrolytes are grafted. The palladium nanoparticles have directly been generated within this brush layer and the stabilization of the nanoparticles is effected by the colloidal carriers, no further surface stabilization is necessary. We demonstrate that these composite particles present robust catalysts for the Heck‐ and Suzuki‐type coupling reactions. This was shown by carrying out the Suzuki‐ and Heck‐type coupling reactions at relatively low temperatures (Suzuki reaction: 50 °C, Heck reaction: 70 °C). We demonstrate that the catalytic composite particles are not changed by these reaction conditions and retain their full activity for at least four runs. The yields obtained for both reactions are good to excellent. The mild operation conditions of the palladium nanoparticles are traced back to the absence of surface stabilization. Further mechanistic implications are discussed.
References
42
Referenced
79
10.1021/cr00024a006
10.1126/science.271.5251.933
10.1246/cl.1987.405
10.1246/bcsj.44.581
10.1021/jo00979a024
10.1021/ar50136a006
10.1021/cr00039a007
10.1002/9783527612222
10.1021/cr9903048
10.1039/b617556b
10.1016/0040-4039(96)00924-0
10.1016/0022-328X(96)06398-X
10.1021/ja9714604
10.1016/S1381-1169(01)00153-4
10.1016/j.tet.2007.04.023
10.1002/anie.200353473
10.1021/ja971637u
10.1021/la035440t
10.1039/b200677b
10.1002/adsc.200600387
{'key': 'e_1_2_1_21_2', 'first-page': '70', 'author': 'Calò V.', 'year': '2005', 'journal-title': 'J. Org. Chem.'}
/ J. Org. Chem. by Calò V. (2005)10.1021/jo060372b
{'key': 'e_1_2_1_23_2', 'first-page': '71', 'author': 'Zhang Z.', 'year': '2006', 'journal-title': 'J. Org. Chem.'}
/ J. Org. Chem. by Zhang Z. (2006)10.1021/ic062183h
10.1021/ic061872q
10.1002/ange.200504321
10.1039/B506276B
10.1021/ic061907m
10.1002/adsc.200505473
10.1016/j.progpolymsci.2007.05.002
10.1002/marc.200300107
10.1021/la052120w
10.1016/j.jcat.2006.11.016
10.1021/cm062554s
10.1002/macp.200700161
10.1002/3527603824
{'key': 'e_1_2_1_37_2', 'first-page': '32', 'author': 'Guo X.', 'year': '1999', 'journal-title': 'Macromolecules'}
/ Macromolecules by Guo X. (1999)10.1021/ja0513234
10.1021/op7000436
10.1021/op7000657
10.1002/prac.19763180412
10.1002/1521-3773(20021115)41:22<4176::AID-ANIE4176>3.0.CO;2-U
Dates
Type | When |
---|---|
Created | 17 years, 6 months ago (Feb. 8, 2008, 8:46 a.m.) |
Deposited | 1 year, 9 months ago (Nov. 14, 2023, 3:51 p.m.) |
Indexed | 1 week, 6 days ago (Aug. 22, 2025, 12:48 a.m.) |
Issued | 17 years, 6 months ago (Feb. 19, 2008) |
Published | 17 years, 6 months ago (Feb. 19, 2008) |
Published Online | 17 years, 6 months ago (Feb. 19, 2008) |
Published Print | 17 years, 6 months ago (Feb. 22, 2008) |
@article{Proch_2008, title={Suzuki‐ and Heck‐Type Cross‐Coupling with Palladium Nanoparticles Immobilized on Spherical Polyelectrolyte Brushes}, volume={350}, ISSN={1615-4169}, url={http://dx.doi.org/10.1002/adsc.200700422}, DOI={10.1002/adsc.200700422}, number={3}, journal={Advanced Synthesis & Catalysis}, publisher={Wiley}, author={Proch, S. and Mei, Y. and Villanueva, J. M. Rivera and Lu, Y. and Karpov, A. and Ballauff, M. and Kempe, R.}, year={2008}, month=feb, pages={493–500} }