Investigation of the catalytic activity of poly(4-vinylpyridine) supported iodine as a new, efficient and recoverable catalyst for regioselective ring opening of epoxides

RSC Advances ◽  
2012 ◽  
Vol 2 (8) ◽  
pp. 3321 ◽  
Author(s):  
Nader Ghaffari Khalig
Keyword(s):  
Catalytic Activity ◽  
Ring Opening ◽  
Recoverable Catalyst ◽  
Ring Opening Of Epoxides

Investigation of the catalytic activity of an electron-deficient vanadium(IV) tetraphenylporphyrin: A new, highly efficient and reusable catalyst for ring-opening of epoxides

Polyhedron ◽  
2011 ◽  
Vol 30 (13) ◽  
pp. 2244-2252 ◽  
Author(s):  
S. Abdolmanaf Taghavi ◽  
Majid Moghadam ◽  
Iraj Mohammadpoor-Baltork ◽  
Shahram Tangestaninejad ◽  
Valiollah Mirkhani ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Ring Opening ◽  
Reusable Catalyst ◽  
Highly Efficient ◽  
Ring Opening Of Epoxides

A copper-phosphonate network as a high-performance heterogeneous catalyst for the CO2 cycloaddition reactions and alcoholysis of epoxides

2017 ◽  
Vol 46 (20) ◽  
pp. 6756-6761 ◽  
Author(s):  
Jing Ai ◽  
Xue Min ◽  
Chao-Ying Gao ◽  
Hong-Rui Tian ◽  
Song Dang ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Heterogeneous Catalyst ◽  
Ring Opening ◽  
High Performance ◽  
Chemical Conversion ◽  
Cycloaddition Reactions ◽  
Metal Phosphonate ◽  
Ring Opening Of Epoxides

A protonated metal-phosphonate network was successfully prepared; it shows excellent catalytic activity for the CO2 chemical conversion and ring opening of epoxides.

scholarly journals Environmentally benign and highly regioselective ring opening of epoxides accelerated by ultrasound irradiation

2016 ◽  
Vol 9 (1) ◽  
pp. 76-84 ◽  
Author(s):  
Mohamed Mahmoud Nasef ◽  
Masoumeh Zakeri ◽  
Jahanbakhsh Asadi ◽  
Ebrahim Abouzari-Lotf ◽  
Arshad Ahmad ◽  
...  
Keyword(s):  
Ring Opening ◽  
Ultrasound Irradiation ◽  
Environmentally Benign ◽  
Ring Opening Of Epoxides

scholarly journals Ring-Opening Copolymerization of Cyclohexene Oxide and Cyclic Anhydrides Catalyzed by Bimetallic Scorpionate Zinc Catalysts

Polymers ◽  
2021 ◽  
Vol 13 (10) ◽  
pp. 1651
Author(s):  
Felipe de la Cruz-Martínez ◽  
Marc Martínez de Sarasa Buchaca ◽  
Almudena del Campo-Balguerías ◽  
Juan Fernández-Baeza ◽  
Luis F. Sánchez-Barba ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Reaction Mechanism ◽  
Catalytic System ◽  
Phthalic Anhydride ◽  
Ring Opening ◽  
High Selectivity ◽  
Zinc Complexes ◽  
Cyclohexene Oxide ◽  
Reaction Conditions ◽  
Cyclic Anhydrides

The catalytic activity and high selectivity reported by bimetallic heteroscorpionate acetate zinc complexes in ring-opening copolymerization (ROCOP) reactions involving CO2 as substrate encouraged us to expand their use as catalysts for ROCOP of cyclohexene oxide (CHO) and cyclic anhydrides. Among the catalysts tested for the ROCOP of CHO and phthalic anhydride at different reaction conditions, the most active catalytic system was the combination of complex 3 with bis(triphenylphosphine)iminium as cocatalyst in toluene at 80 °C. Once the optimal catalytic system was determined, the scope in terms of other cyclic anhydrides was broadened. The catalytic system was capable of copolymerizing selectively and efficiently CHO with phthalic, maleic, succinic and naphthalic anhydrides to afford the corresponding polyester materials. The polyesters obtained were characterized by spectroscopic, spectrometric, and calorimetric techniques. Finally, the reaction mechanism of the catalytic system was proposed based on stoichiometric reactions.

Lewis Acid-Promoted Suzuki Reaction using Palladium Chloride Anchored on a Polymer as a Catalyst

2008 ◽  
Vol 61 (8) ◽  
pp. 610 ◽  
Author(s):  
Guozhi Fan ◽  
Hanjun Zhang ◽  
Siqing Cheng ◽  
Zhandong Ren ◽  
Zhijun Hu ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Lewis Acid ◽  
Lewis Acids ◽  
Heterogeneous Catalysts ◽  
Suzuki Reaction ◽  
Cross Coupling ◽  
Palladium Chloride ◽  
Coupling Reactions ◽  
Cross Coupling Reactions ◽  
Recoverable Catalyst

Palladium chloride anchored on polystyrene modified by 5-amino-1,10-phenanthroline was prepared and used as an efficient recoverable catalyst for Suzuki cross-coupling reactions. The heterogeneous catalysts can be easily separated from the reaction mixture and reused for five cycles without significant Pd leaching and loss of catalytic activity. Rate enhancement in the Suzuki reaction by Lewis acids was also studied.

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