Stereospecific Radical Polymerization ofα-(Alkoxymethyl)acrylates Controlled by Lewis Acid Catalysts:  Mechanistic Study and Effect of Amino Alcohols as Ligand for Zinc Bromide

2001 ◽  
Vol 34 (14) ◽  
pp. 4724-4729 ◽  
Author(s):  
Hideo Baraki ◽  
Shigeki Habaue ◽  
Yoshio Okamoto
Keyword(s):  
Radical Polymerization ◽  
Lewis Acid ◽  
Amino Alcohols ◽  
Mechanistic Study ◽  
Acid Catalysts ◽  
Lewis Acid Catalysts ◽  
Zinc Bromide

Hydrothermal synthesis of Sn-Beta zeolites in F−-free medium

2018 ◽  
Vol 5 (11) ◽  
pp. 2763-2771 ◽  
Author(s):  
Hao Xu ◽  
Xudong Wang ◽  
Peng Ji ◽  
Haihong Wu ◽  
Yejun Guan ◽  
...  
Keyword(s):  
Hydrothermal Synthesis ◽  
Lewis Acid ◽  
Crystal Size ◽  
Acid Catalysts ◽  
Free Medium ◽  
Lewis Acid Catalysts ◽  
Structure Directing Agent ◽  
Highly Active ◽  
Beta Zeolites

Sn-Beta zeolites, with high Sn content and smaller crystal size, hydrothermally synthesized in F−-free medium using N-cyclohexyl-N,N-dimethylcyclohexanaminium hydroxide as the structure-directing agent with the assistance of Na+ and seed, are highly active as Lewis acid catalysts.

Assessment of fluoroalkyltin compounds as fluorous Lewis acid catalysts

2003 ◽  
Vol 17 (10) ◽  
pp. 795-799 ◽  
Author(s):  
Yasuo Imakura ◽  
Satoru Nishiguchi ◽  
Akihiro Orita ◽  
Junzo Otera
Keyword(s):  
Lewis Acid ◽  
Acid Catalysts ◽  
Lewis Acid Catalysts

ChemInform Abstract: Calcium-Based Lewis Acid Catalysts

ChemInform ◽  
2013 ◽  
Vol 44 (40) ◽  
pp. no-no
Author(s):  
Jeanne-Marie Begouin ◽  
Meike Niggemann
Keyword(s):  
Lewis Acid ◽  
Acid Catalysts ◽  
Lewis Acid Catalysts

Catalyzed Orientation Reversals in Diels–Alder Reactions

1975 ◽  
Vol 53 (4) ◽  
pp. 616-618 ◽  
Author(s):  
Žarko Stojanac ◽  
Robert A. Dickinson ◽  
Nada Stojanac ◽  
Ronald J. Woznow ◽  
Zdenek Valenta
Keyword(s):  
Lewis Acid ◽  
Diels Alder ◽  
Acid Catalysts ◽  
Acid Salt ◽  
Lewis Acid Catalysts ◽  
Preferential Formation ◽  
Orientation Reversal

Lewis acid catalysts cause an orientation reversal in the Diels–Alder additions of 2,6-di-methyl-1,4-quinone (1) and toluquinone (12) to 1-substituted 1,3-butadienes and to 1,2- and 1,3-dialkyl dienes. These results are explained by the preferential formation of one reactive quinone–Lewis acid salt.

Supported Lewis Acid Catalysts Based on Polyolefin Thermoplastics

1993 ◽  
pp. 87-99 ◽  
Author(s):  
T. C. Chung ◽  
A. Kumar ◽  
F. Chen ◽  
J. Stanat
Keyword(s):  
Lewis Acid ◽  
Acid Catalysts ◽  
Lewis Acid Catalysts

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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