ChemInform Abstract: Lewis Acid Promoted Coupling Reactions of Acid Chlorides with Organoaluminum and Organozinc Reagents.

ChemInform ◽  
2010 ◽  
Vol 28 (45) ◽  
pp. no-no
Author(s):  
M. ARISAWA ◽  
Y. TORISAWA ◽  
M. KAWAHARA ◽  
M. YAMANAKA ◽  
A. NISHIDA ◽  
...  
Keyword(s):  
Lewis Acid ◽  
Coupling Reactions ◽  
Acid Chlorides ◽  
Organozinc Reagents

Lewis Acid-Promoted Coupling Reactions of Acid Chlorides with Organoaluminum and Organozinc Reagents

1997 ◽  
Vol 62 (13) ◽  
pp. 4327-4329 ◽  
Author(s):  
Mitsuhiro Arisawa ◽  
Yasuhiro Torisawa ◽  
Michiaki Kawahara ◽  
Masamichi Yamanaka ◽  
Atsushi Nishida ◽  
...  
Keyword(s):  
Lewis Acid ◽  
Coupling Reactions ◽  
Acid Chlorides ◽  
Organozinc Reagents

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.

scholarly journals Palladium-catalyzed cross coupling reactions of 4-bromo-6H-1,2-oxazines

2009 ◽  
Vol 5 ◽  
Author(s):  
Reinhold Zimmer ◽  
Elmar Schmidt ◽  
Michal Andrä ◽  
Marcel-Antoine Duhs ◽  
Igor Linder ◽  
...  
Keyword(s):  
Lewis Acid ◽  
Cross Coupling ◽  
Pyridine Derivative ◽  
Coupling Reactions ◽  
Cross Coupling Reactions ◽  
Palladium Catalyzed

A number of 4-aryl- and 4-alkynyl-substituted 6H-1,2-oxazines 8 and 9 have been prepared in good yields via cross coupling reactions of halogenated precursors 2, which in turn are easily accessible by bromination of 6H-1,2-oxazines 1. Lewis-acid promoted reaction of 1,2-oxazine 9c with 1-hexyne provided alkynyl-substituted pyridine derivative 12 thus demonstrating the potential of this approach for the synthesis of pyridines.

scholarly journals Synthesis of Stilbenes Using Various Catalysts and Investigation of their Optical Properties

2021 ◽  
Author(s):  
Pelin Ulukan ◽  
Saron Catak ◽  
Erdal Ertas
Keyword(s):  
Optical Properties ◽  
Lewis Acid ◽  
Suzuki Coupling ◽  
Acid Catalysts ◽  
Coupling Reactions ◽  
Lewis Acid Catalysts ◽  
First Time

Stilbenes substituted with –CN, –OMe and –Br were synthesized using four different Lewis acid catalysts and their reaction efficiencies were compared. In addition to McMurry reagents known in literature, a more familiar and economical catalyst ZnCl2 was used for the first time in our reaction procedures. Furthermore, bromine substituted stilbenes were subjected to Suzuki coupling reactions to append a triphenylamine (TPA) unit, which enhances fluorescence emissions. Solvatochromic properties of synthesized stilbenes were investigated and aggregation caused quenching (ACQ) properties of TPA containing molecules were systematically examined. Optical properties were also theoretically investigated.

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