3650-77-9Relevant articles and documents
In situ synthesis of carbon nanotube-encapsulated cobalt nanoparticles by a novel and simple chemical treatment process: Efficient and green catalysts for the Heck reaction
Hajipour, Abdol R.,Khorsandi, Zahra,Farrokhpour, Hossein
supporting information, p. 8215 - 8219 (2019/06/07)
In this study, we present a novel, fast and easy method for supporting metal nanoparticles onto the internal surface of multi-walled CNTs; these CNT-encapsulated nanoparticles as heterogeneous, efficient, inexpensive and green catalysts promote the Heck cross-coupling of a large library of functional substrates under mild and sustainable conditions. Remarkably, the introduced catalytic system could be reused for at least nine successive runs without a discernible decrease in its catalytic activity.
Cross-Linked Thiazolidine Network as Support for Palladium: A New Catalyst for Suzuki and Heck Reactions
Bivona, Lucia Anna,Giacalone, Francesco,Vaccaro, Luigi,Aprile, Carmela,Gruttadauria, Michelangelo
, p. 2526 - 2533 (2015/08/24)
A thiazolidine-based material was used for the first time as support for palladium. The support was prepared by starting from a highly cross-linked thiazolium-based material, obtained by radical oligomerization of a bisvinylthiazolium dibromide salt in the presence of 3-mercaptopropyl-modified silica SBA-15. Palladium was immobilized by treatment with tetrachloropalladate salt. Reduction with sodium borohydride afforded a thiazolidine-based material that acted as ligands for the Pd species. The thiazolidine-based palladium catalyst was fully characterized and, working in only 0.1 mol% amount, displayed good activity in the Suzuki-Miyaura and in the Heck reactions. Several biphenyl and alkene compounds could be prepared in high yields. The catalytic material proved to be fully recoverable and it was representatively used for three times in the Suzuki-Miyaura reaction without showing any decrease in its activity.
Evaluation of SILP-Pd catalysts for Heck reactions in a microfluidics-based high throughput flow reactor
Urbán, Béla,Srankó, Dávid,Sáfrán, Gy?rgy,ürge, László,Darvas, Ferenc,Bakos, József,Skoda-F?ldes, Rita
, p. 364 - 372 (2014/12/10)
Heck reaction of aryl iodides and methyl acrylate was carried out in an X-Cube reactor in the presence of supported catalysts. Palladium was immobilised by different methods on silica with covalently grafted ionic liquid moieties. Activity and selectivity of the SILP-Pd (supported ionic liquid phase) catalysts were found to depend greatly on the conditions (such as solvent and additives) of immobilisation. By the proper choice of the methodology used during heterogenisation, a selective catalyst, showing stable performance for hours on stream, was obtained.