Synthesis and characterization of 1,3-diamino-graphene as a heterogeneous ligand for a CuI-catalyzed C–N coupling reaction

2016 ◽  
Vol 40 (2) ◽  
pp. 1454-1459 ◽  
Author(s):  
Limei Zhou ◽  
Mengyun Yin ◽  
Xiaohui Jiang ◽  
Qiang Huang ◽  
Wencheng Lang
Keyword(s):  
Coupling Reaction ◽  
Synthesis And Characterization

1,3-Diamino-graphene was synthesized and used as an efficient heterogeneous ligand for a CuI-catalyzed C–N coupling reaction.

Synthesis and Characterization of Novel PEPPSI type Pd–BICAAC Complexes

2022 ◽  
Author(s):  
Márton Nagyházi ◽  
Balázs Almási ◽  
Ádám Lukács ◽  
Attila Bényei ◽  
Tibor Nagy ◽  
...  
Keyword(s):  
High Activity ◽  
Coupling Reaction ◽  
Kinetic Studies ◽  
Elemental Mercury ◽  
Palladium Complexes ◽  
Synthesis And Characterization ◽  
Heck Coupling ◽  
Moisture Resistant

A series of bicyclic alkylamino carbenes (BICAAC) (where N-aryl = dipp, mes, 2,6-dimethyl-4-(dimethylamino)phenyl, 5a-d) and their novel air- and moisture-resistant pyridine (pyridine, 4 dimethylaminopyridine) containing palladium PEPPSI-type Pd(II) complexes (6a-e) were synthetized and characterized. The new palladium complexes have shown high activity in Mizoroki–Heck coupling reaction even at as low as 100 ppm loading (TON up to 10000). Kinetic studies revealed that reactions carried out in the presence of elemental mercury resulted in decrease in activity. It indicates that the coupling reaction may have both molecular and Pd(0)-mediated catalytic paths.

Synthesis and Characterization of Polypyrrole−Palladium Nanocomposite-Coated Latex Particles and Their Use as a Catalyst for Suzuki Coupling Reaction in Aqueous Media

Langmuir ◽  
2010 ◽  
Vol 26 (9) ◽  
pp. 6230-6239 ◽  
Author(s):  
Syuji Fujii ◽  
Soichiro Matsuzawa ◽  
Yoshinobu Nakamura ◽  
Atsushi Ohtaka ◽  
Takuto Teratani ◽  
...  
Keyword(s):  
Aqueous Media ◽  
Coupling Reaction ◽  
Suzuki Coupling ◽  
Synthesis And Characterization ◽  
Latex Particles ◽  
Suzuki Coupling Reaction

Synthesis and characterization of amphiphilic triblock Copolymers with Identical compositions but different block sequences

RSC Advances ◽  
2014 ◽  
Vol 4 (82) ◽  
pp. 43682-43690 ◽  
Author(s):  
Chengjiao Lu ◽  
Lingdi Chen ◽  
Kun Huang ◽  
Guowei Wang
Keyword(s):  
Atom Transfer Radical Polymerization ◽  
Click Chemistry ◽  
Radical Polymerization ◽  
Triblock Copolymers ◽  
Coupling Reaction ◽  
Nitroxide Radical ◽  
Synthesis And Characterization ◽  
Radical Coupling ◽  
Radical Coupling Reaction

The amphiphilic triblock copolymers PAA-b-PS-b-PAA and PS-b-PAA-b-PS were synthesized by a combination of an atom transfer radical polymerization mechanism and a nitroxide radical coupling reaction or copper-catalyzed azide/alkyne click chemistry.

Synthesis and characterization of terthiophene bearing stable radicals

2021 ◽  
Vol 99 (1) ◽  
pp. 24-30
Author(s):  
M’hamed Chahma ◽  
Somaiah Almubayedh
Keyword(s):  
Platinum Electrode ◽  
Coupling Reaction ◽  
Stable Radical ◽  
Synthesis And Characterization ◽  
Oxidation Peak ◽  
Peak Potential ◽  
Cyclic Voltammetric ◽  
Cross Coupling Reaction ◽  
Stable Radicals

The synthesis and characterization of a new terthiophene bearing stable radical II is described. Through a cross coupling reaction between 2-tributylstannylthiophene and 6-(2,5-dibromo-thiophene-3-yl)pyridine-2-carboxaldehyde (2), 6-[2,2′:5′,2″]terthiophen-3′-ylpyridine-2-carboxaldehyde (3) was prepared. The condensation of 3 with 2, 4-diisopropylcarbonohydrazide bis-hydrochloride affords the heterocyclic tetrazane (4), which was oxidized with 1,4-benzoquinone to form the stable radical II. II characterized by IR, ESR, and cyclic voltammetry. Oxidative electropolymerization of II and its precursor 4 at oxidation peak potential of the terthiophene using cyclic voltammetric scans produces radical functionalized polyterthiophene on a platinum electrode (poly(II)-Pt).

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