scholarly journals One-pot cascade syntheses of microporous and mesoporous pyrazine-linked covalent organic frameworks as Lewis-acid catalysts

2019 ◽  
Vol 48 (21) ◽  
pp. 7352-7357 ◽  
Author(s):  
Yunchao Ma ◽  
Xiaozhou Liu ◽  
Xinyu Guan ◽  
Hui Li ◽  
Yusran Yusran ◽  
...  
Keyword(s):  
Lewis Acid ◽  
Porous Solids ◽  
Acid Catalysts ◽  
Covalent Organic Frameworks ◽  
Lewis Acid Catalysts ◽  
One Pot ◽  
Potential Applications

Covalent organic frameworks (COFs) are crystalline porous solids with broad potential applications.

An Efficient, Eco-Friendly, One-Pot Protocol for the Synthesis of 2-Oxazolines Promoted by Ionic Liquid/Indium Chloride

2006 ◽  
Vol 59 (7) ◽  
pp. 463 ◽  
Author(s):  
R. Kamakshi ◽  
Boreddy S. R. Reddy
Keyword(s):  
Ionic Liquid ◽  
Ionic Liquids ◽  
Lewis Acid ◽  
Acid Catalysts ◽  
Lewis Acid Catalysts ◽  
One Pot ◽  
Indium Chloride ◽  
Ambient Temperatures ◽  
Alkyl Chains ◽  
Liquid Indium

2-Oxazolines have been synthesized using a solventless ionic liquid melt in good yields at ambient temperatures. The efficiency of various Lewis acid catalysts for the same reaction has been compared. The effectiveness of different alkyl chains in the ionic liquids for the synthesis of oxazolines has been studied and a butylmethylimidazolinium chloride/indium chloride melt has been found to be the best media for promoting the reaction.

scholarly journals A Convenient Synthesis of Substituted Spiro[5.5]Undecanes Using Lewis Acid Catalysts

2012 ◽  
Vol 60 (1) ◽  
pp. 121-124 ◽  
Author(s):  
M Glasuddin Ahmed ◽  
UKR Romman ◽  
Kawsari Akhter ◽  
Monarul Islam ◽  
Mohammad Mosharrag Hossain ◽  
...  
Keyword(s):  
Lewis Acid ◽  
Michael Reaction ◽  
Acid Catalysts ◽  
Lewis Acid Catalysts ◽  
One Pot ◽  
One Pot Synthesis ◽  
Convenient Synthesis

A one-pot synthesis of 3, 3-Dimethyl-7, 11-diphenyl-spiro [5, 5] undecane-1, 5, 9-triones 4a-c has been achieved by the application of Michael reaction between dimedone (5,5-dimethylcyclohexane-1,3-dione) 1 and trans,trans diarylideneacetones [1,5-diaryl-1,4- pentadien-3-ones] 2a-c (a. Ar = C6H5-, b. Ar = 2-Cl-C6H4-, c. Ar = 2- CH3O- C6H4) using Lewis acid catalysts.DOI: http://dx.doi.org/10.3329/dujs.v60i1.10349  Dhaka Univ. J. Sci. 60(1): 121-124 2012 (January)

scholarly journals Alkaline-assisted stannation of beta zeolite as a scalable route to Lewis-acid catalysts for the valorisation of renewables

2016 ◽  
Vol 40 (5) ◽  
pp. 4136-4139 ◽  
Author(s):  
Pierre Y. Dapsens ◽  
Cecilia Mondelli ◽  
Javier Pérez-Ramírez
Keyword(s):  
Lewis Acid ◽  
Beta Zeolite ◽  
Acid Catalysts ◽  
Lewis Acid Catalysts ◽  
One Pot ◽  
Acid Character

Alkaline-assisted stannation comprises a scalable one-pot method to incorporate tin centres with a Lewis-acid character in beta zeolite for the isomerisation of renewables.

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.

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