Synergetic effect of Lewis acid and base in modified Sn-β on the direct conversion of levoglucosan to lactic acid

2020 ◽  
Vol 10 (9) ◽  
pp. 2986-2993
Author(s):  
Wenda Hu ◽  
Zixin Chi ◽  
Yan Wan ◽  
Shuai Wang ◽  
Jingdong Lin ◽  
...  
Keyword(s):  
Lactic Acid ◽  
Lewis Acid ◽  
Synergetic Effect ◽  
Direct Conversion ◽  
Acid And Base ◽  
Lewis Acid And Base

The synergetic effect of Lewis acid and base in modified Sn-β boosts the yield of lactic acid produced from levoglucosan.

scholarly journals Lewis Acid and Base Catalysis of YNbO 4 Toward Aqueous‐Phase Conversion of Hexose and Triose Sugars to Lactic Acid in Water

ChemCatChem ◽  
2019 ◽  
Vol 12 (1) ◽  
pp. 350-359 ◽  
Author(s):  
Minjune Kim ◽  
Silvia Ronchetti ◽  
Barbara Onida ◽  
Nobuyuki Ichikuni ◽  
Atsushi Fukuoka ◽  
...  
Keyword(s):  
Lactic Acid ◽  
Aqueous Phase ◽  
Lewis Acid ◽  
Base Catalysis ◽  
Phase Conversion ◽  
Acid And Base ◽  
Lewis Acid And Base ◽  
Acid And Base Catalysis

scholarly journals Lewis acid / Base-free Strategy for the Synthesis of 2-Arylthio and Selenyl Benzothiazole / Thiazole and Imidazole

2021 ◽  
Vol 27 (1) ◽  
pp. 17-23
Author(s):  
Guniganti Balakishan ◽  
Gullapalli Kumaraswamy ◽  
Vykunthapu Narayanarao ◽  
Pagilla Shankaraiah
Keyword(s):  
Lewis Acid ◽  
Bond Formation ◽  
Acid Base ◽  
Mechanistic Pathway ◽  
Wide Range ◽  
Acid And Base ◽  
Lewis Acid And Base ◽  
Sulfur Bond

Abstract A Cu(II)-catalyzed Csp2-Se and Csp2-Sulfur bond formation was achieved with moderate to good yields without the aid of Lewis acid and base. The reaction is compatible with a wide range of heterocycles such as benzothiazole, thiazole, and imidazole. Also, this typical protocol is found to be active in thio-selenation via S-H activation. Additionally, we proposed a plausible mechanistic pathway involving Cu(III) putative intermediate.

Combined theoretical and experimental study on alcoholysis of amides on CeO2 surface: A catalytic interplay between Lewis acid and base sites

2018 ◽  
Vol 303 ◽  
pp. 256-262 ◽  
Author(s):  
Takashi Kamachi ◽  
S.M.A. Hakim Siddiki ◽  
Yoshitsugu Morita ◽  
Md. Nurnobi Rashed ◽  
Kenichi Kon ◽  
...  
Keyword(s):  
Experimental Study ◽  
Lewis Acid ◽  
Acid And Base ◽  
Lewis Acid And Base

Role of the Surface Lewis Acid and Base Sites in the Adsorption of CO2 on Titania Nanotubes and Platinized Titania Nanotubes: An in Situ FT-IR Study

2013 ◽  
Vol 117 (24) ◽  
pp. 12661-12678 ◽  
Author(s):  
Kaustava Bhattacharyya ◽  
Alon Danon ◽  
Baiju K.Vijayan ◽  
Kimberly A. Gray ◽  
Peter C. Stair ◽  
...  
Keyword(s):  
Lewis Acid ◽  
Titania Nanotubes ◽  
Acid And Base ◽  
Ft Ir ◽  
Ir Study ◽  
Adsorption Of Co2 ◽  
Lewis Acid And Base

scholarly journals Ruthenium catalysis in organic synthesis

2002 ◽  
Vol 74 (1) ◽  
pp. 19-24 ◽  
Author(s):  
Shun-Ichi Murahashi ◽  
Hikaru Takaya ◽  
Takeshi Naota
Keyword(s):  
Organic Synthesis ◽  
Lewis Acid ◽  
Catalytic Reactions ◽  
Biologically Active ◽  
Hydride Complexes ◽  
Base Catalysts ◽  
Acid And Base ◽  
Ruthenium Catalysis ◽  
Lewis Acid And Base ◽  
Neutral Conditions

Ruthenium, rhodium, iridium, and rhenium hydride complexes are highly useful redox Lewis acid and base catalysts. Various substrates bearing hetero atoms are activated by these catalysts and undergo reactions with either nucleophiles or electrophiles under neutral conditions. These types of catalytic reactions are described together with their application to the preparation of various biologically active compounds.

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