Heterogeneous selective catalysis of the hydrogenation of olefins by polymeric palladium(II) and platinum(II) complexes
About: This article is published in Inorganic Chemistry.The article was published on 1973-07-01. It has received 74 citations till now. The article focuses on the topics: Palladium & Catalysis.
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TL;DR: The chiral stationary phase for high-performance liquid chromatography showed good chiral recognition ability towards various racemates, including Cu(acac)2, but not as well as in the phase for low-performance materials like Palladium.
Abstract: 2.6. Microencapsulated Cu(acac)2 [MC Cu(acac)2] 606 2.7. Microencapsulated Palladium [MC Pd] 607 2.8. Microencapsulated Methathesis Catalyst 609 3. Polymer Incarcerated Catalysts 611 3.1. Polymer Incarcerated Palladium [PI Pd] 611 3.2. Polymer-Micelle Incarcerated (PMI) Palladium 617 3.3. Polymer Incarcerated Ruthenium Catalyst 619 3.4. Polymer-Micelle Incarcerated Scandium Trifluoromethanesulfonate [PMI Sc(OTf)3] and Ruthenium Catalyst [PMI Ru] 621
205 citations
TL;DR: In this paper, emulsifier-free emulsion polymerization techniques under free radical initiation of the respective monomers with 4 wt % divinylbenzene as the cross-linking agent were used to obtain monodisperse poly(4- and poly(2-vinylpyridine) nanospheres in the 500 nm diameter range.
Abstract: Monodisperse poly(4- and poly(2-vinylpyridine) nanospheres in the 500 nm diameter range were prepared by emulsifier-free emulsion polymerization techniques under free radical initiation of the respective monomers with 4 wt % divinylbenzene as the cross-linking agent. The size, integrity, and nature of the nanospheres were investigated by Scanning electron microscopy, transmission electron microscopy, energy-dispersive X-ray analysis, Auger spectroscopy, and Fourier-transform infrared spectroscopy measurements. The rigid and highly stable nanospheres with exposed pyridine nitrogen on the surface serve as an excellent support for Pd0 nanoparticles in the range of 1−4 nm. The Pd-coated nanospheres were also characterized by transmission electron microscopy and inductively coupled plasma mass spectrometry measurements. Four weight percent palladium-coated nanospheres serve as good catalysts for Suzuki-, Heck-, and Stille-type coupling reactions for carbon−carbon bond formation.
152 citations
TL;DR: It is noted that this method enables direct immobilization of metals onto polymers, and that normally unstable species such as Pd(0)(PPh3) can be kept stable by this immobilization technique, and it is expected that other metal catalysts can be immobilized using this microencapsulation technique.
149 citations
128 citations
TL;DR: In this article, the Suzuki cross-coupling reaction of a boronic acid and a bromoaromatic compound requires palladium catalysis, and almost identical yields were obtained in the usual conditions, with 30 mequiv.
126 citations