@article { ISI:000273933800010,
	title = {Heterogenized copper catalysts for the amination of arylhalide: synthesis, characterization and catalytic applications},
	journal = {Applied Catalysis A-General},
	volume = {372},
	number = {1},
	year = {2010},
	month = {JAN},
	pages = {73-81},
	publisher = {ELSEVIER SCIENCE BV},
	address = {PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS},
	abstract = {<p>This research investigated the synthesis, characterization and catalytic activity of heterogenized copper complexes for the selective amination of aryl halides. Amination reactions using homogeneous copper catalyst systems are not generally selective and it is also difficult to recover the catalyst from the homogeneous system for recycling. To overcome these difficulties, our efforts were directed towards the development of cheaper heterogeneous catalyst systems, which can be easily recovered and recycled. Heterogenized analogs of the homogenous Cu complexes were prepared using two methods: (a) encapsulation of copper complexes in zeolite-Y and (b) tethering of copper complexes on various supports like zeolite-Y, silica, charcoal, or clay. The encapsulated and tethered copper catalysts on zeolite-Y were characterized using EPR, Diffused reflectance UV-vis, XRD, IAS, ICPES, SEM, and TEM. The results confirmed that the copper complexes were truly heterogenized in zeolite-Y support. Encapsulated and tethered copper complexes were tested for amination of aryl iodide. The effects of various reaction parameters were examined using tethered Cu(Phen)(PPh(3))Br-PTA-Y catalyst to determine optimum conditions. A recycle study of encapsulated and tethered Cu catalyst was carried out to test their robustness for possible commercial exploitation. (C) 2009 Elsevier B.V. All rights reserved.</p>},
	keywords = {Amination, C-N coupling, Copper, heterogeneous catalysis, mesoporous materials},
	issn = {0926-860X},
	doi = {10.1016/j.apcata.2009.10.013},
	author = {Patil, Nandkumar M. and Gupte, Sunil P. and Chaudhari, Raghunath V.}
}
@article { ISI:000311350000022,
	title = {Anchored Pd-complexes in mesoporous supports: synthesis, characterization and catalysis studies for carbonylation reactions},
	journal = {Catalysis Today},
	volume = {198},
	number = {1, SI},
	year = {2012},
	month = {DEC},
	pages = {154-173},
	publisher = {ELSEVIER SCIENCE BV},
	address = {PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS},
	abstract = {<p>Pd(pyca)(PPh3)(OTs) [pyca = 2-picolinate] complex is efficiently anchored inside different mesoporous matrices, such as MCM-41, MCM-48, SBA-15 using a molecular aminopropyl tether moiety employing different synthesis strategies. Thorough characterization of the materials using powder XRD, multinuclear (C-13, Si-29, P-31) CP-MAS NMR, XPS, SEM, N-2-sorption studies etc. confirmed the successful anchoring of the palladium complex to the walls of the support matrices thus establishing the synthesis protocols unambiguously. The catalysts were found to be highly active and selective for the carbonylation of different aryl olefins and alcohols. Consecutive recycling and successful reuse proved the stability and true heterogeneous nature of all the anchored catalysts, which is a substantial advancement over the existing heterogeneous catalysts for carbonylation. (C) 2012 Elsevier B. V. All rights reserved.</p>},
	keywords = {Anchored catalysts, Carbonylation, Immobilization, mesoporous materials, Palladium complex},
	issn = {0920-5861},
	doi = {10.1016/j.cattod.2012.04.047},
	author = {Sarkar, Bibhas R. and Chaudhari, Raghunath V.}
}
