Effect of addition of iron on morphology and catalytic activity of PdCu nanoalloy thin film as catalyst in Sonogashira coupling reaction

2016 ◽  
Vol 31 (8) ◽  
pp. e3675 ◽  
Author(s):  
S. Jafar Hoseini ◽  
Nahal Aramesh ◽  
Mehrangiz Bahrami
Keyword(s):  
Thin Film ◽  
Catalytic Activity ◽  
Coupling Reaction ◽  
Sonogashira Coupling ◽  
Sonogashira Coupling Reaction

scholarly journals Facile Green Preparation of Rhodium Nanoclusters Supported Nano-Scaled Graphene Platelets for Sonogashira Coupling Reaction and Reduction of p-Nitrophenol

Catalysts ◽  
2019 ◽  
Vol 9 (11) ◽  
pp. 908 ◽  
Author(s):  
Gopiraman Mayakrishnan ◽  
Saravanamoorthy Somasundaram ◽  
Sana Ullah ◽  
Ilangovan Andivelu ◽  
Kim Ick Soo ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Electron Microscope ◽  
Inductively Coupled Plasma ◽  
Coupling Reaction ◽  
Significant Loss ◽  
Sonogashira Coupling ◽  
Inductively Coupled ◽  
Sonogashira Coupling Reaction ◽  
Graphene Platelets ◽  
Means Of Transmission

Rhodium nanoclusters were uniformly dispersed on nano-scaled graphene platelets by a simple ‘mix and heat’ method without using any toxic reagents. Distilled water was used to obtain the homogenous dispersion of Rh-nanoclusters on graphene platelets. The morphology of the resultant catalyst (Rh(0)NCs/GNPs) was studied by means of transmission electron microscope (TEM) and atomic force microscope (AFM) analyses. The X-ray photoemission spectroscope (XPS) result confirmed the metallic form of Rh-nanoclusters in Rh(0)NCs/GNPs. The crystalline property and the interaction between Rh-nanoclusters and graphene platelets (GNPs) were studied by means of XRD and Raman analysis. The Rh-loading in Rh(0)NCs/GNPs was confirmed by scanning electron microscope and energy dispersive spectroscope (SEM-EDS) and inductively coupled plasma-mass spectroscope (ICP-MS) analysis. After being optimized, the Rh(0)NCs/GNPs used as catalyst for the reduction of 4-nitrophenol with NaBH4 and the Sonogashira coupling reaction between iodobenzene with phenylacetylene. To our delight, the Rh(0)NCs/GNPs showed excellent catalytic activity towards the reduction of 4-nitrophenol with an excellent turnover frequency (TOF) value of 112.5 min−1. The kapp and k’ values were calculated to be 62.07 × 10−3 min−1(0.002 mg of Rh(0)NCs/GNPs) and 31035 × 10−3 mg−1 min−1,respectively. Alike, under the optimal conditions, the Rh(0)NCs/GNPs gave the desired product, diphenylacetylene, in a good yield of 87% with 91% selectivity. The Rh(0)NCs/GNPs can be reused without significant loss in its catalytic activity.

ChemInform Abstract: 2,5-Bis(2-(diphenylphosphino)phenyl)-1,3,4-oxadiazole Ligands and Their Cu(I) Complexes for Sonogashira Coupling Reaction.

ChemInform ◽  
2014 ◽  
Vol 45 (35) ◽  
pp. no-no
Author(s):  
Cai-Xia Lin ◽  
Jia-Fang Zhu ◽  
Qing-Shan Li ◽  
Li-Hua Ao ◽  
Yan-Juan Jin ◽  
...  
Keyword(s):  
Coupling Reaction ◽  
Sonogashira Coupling ◽  
Sonogashira Coupling Reaction

scholarly journals The Utility of Sonogashira Coupling Reaction for the Derivatization of Aryl Halides with Fluorescent Alkyne

2018 ◽  
Vol 34 (10) ◽  
pp. 1183-1188 ◽  
Author(s):  
Naoyuki YASAKA ◽  
Naoya KISHIKAWA ◽  
Takumi HIGASHIJIMA ◽  
Kaname OHYAMA ◽  
Naotaka KURODA
Keyword(s):  
Coupling Reaction ◽  
Aryl Halides ◽  
Sonogashira Coupling ◽  
Sonogashira Coupling Reaction

scholarly journals Synthesis of 9-arylalkynyl- and 9-aryl-substituted benzo[b]quinolizinium derivatives by Palladium-mediated cross-coupling reactions

2018 ◽  
Vol 14 ◽  
pp. 1871-1884 ◽  
Author(s):  
Siva Sankar Murthy Bandaru ◽  
Darinka Dzubiel ◽  
Heiko Ihmels ◽  
Mohebodin Karbasiyoun ◽  
Mohamed M A Mahmoud ◽  
...  
Keyword(s):  
Emission Intensity ◽  
Binding Constants ◽  
Coupling Reaction ◽  
Cross Coupling ◽  
Coupling Reactions ◽  
Sonogashira Coupling ◽  
Reaction Conditions ◽  
Quadruplex Dna ◽  
Cross Coupling Reactions ◽  
Sonogashira Coupling Reaction

9-Arylbenzo[b]quinolizinium derivatives were prepared with base-free Suzuki–Miyaura coupling reactions between benzo[b]quinolizinium-9-trifluoroborate and selected benzenediazonium salts. In addition, the Sonogashira coupling reaction between 9-iodobenzo[b]quinolizinium and the arylalkyne derivatives yielded four novel 9-(arylethynyl)benzo[b]quinolizinium derivatives under relatively mild reaction conditions. The 9-(N,N-dimethylaminophenylethynyl)benzo[b]quinolizinium is only very weakly emitting, but the emission intensity increases by a factor >200 upon protonation, so that this derivative may operate as pH-sensitive light-up probe. Photometric and fluorimetric titrations of duplex and quadruplex DNA to 9-(arylethynyl)benzo[b]quinolizinium derivatives revealed a significant binding affinity of these compounds towards both DNA forms with binding constants ofKb= 0.2–2.2 × 105M−1.

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