CO2adducts of Lewis acid–base pairs (LBCO2LA; LB = PMe3, NHC and LA = AlH3, AlCl3, BH3) − analogous to carboxylic acids and their derivatives

RSC Advances ◽  
2014 ◽  
Vol 4 (104) ◽  
pp. 60421-60428 ◽  
Author(s):  
Indu Purushothaman ◽  
Susmita De ◽  
Pattiyil Parameswaran
Keyword(s):  
Carboxylic Acids ◽  
Lewis Acid ◽  
Acid Base ◽  
Base Pairs

Beyond ketonization: selective conversion of carboxylic acids to olefins over balanced Lewis acid–base pairs

2016 ◽  
Vol 52 (28) ◽  
pp. 4975-4978 ◽  
Author(s):  
Rebecca A. L. Baylon ◽  
Junming Sun ◽  
Kevin J. Martin ◽  
Padmesh Venkitasubramanian ◽  
Yong Wang
Keyword(s):  
Carboxylic Acids ◽  
Lewis Acid ◽  
Acid Base ◽  
Base Pairs ◽  
Selective Conversion

Balanced Lewis acid–base pairs can achieve cascade (cross) ketonization, (cross) aldolization, and self-deoxygenation reactions, converting carboxylic acids to C=3–C=6 olefins.

scholarly journals Sc3N@Ih-C80 as a novel Lewis acid to trap abnormal N-heterocyclic carbenes: the unprecedented formation of a singly bonded [6,6,6]-adduct

2016 ◽  
Vol 7 (3) ◽  
pp. 2331-2334 ◽  
Author(s):  
Muqing Chen ◽  
Lipiao Bao ◽  
Min Ai ◽  
Wangqiang Shen ◽  
Xing Lu
Keyword(s):  
Lewis Acid ◽  
Heterocyclic Carbenes ◽  
Acid Base ◽  
Base Pairs ◽  
Endohedral Metallofullerenes ◽  
Carbon Based

An unprecedented singly bonded [6,6,6]-adduct with an abnormal N-heterocyclic carbene structure, represents the first example of carbon-based Lewis acid–base pairs based on endohedral metallofullerenes.

ChemInform Abstract: Taking the F Out of FLP: Simple Lewis Acid-Base Pairs for Mild Reductions with Neutral Boranes via Borenium Ion Catalysis.

ChemInform ◽  
2013 ◽  
Vol 44 (16) ◽  
pp. no-no
Author(s):  
Patrick Eisenberger ◽  
Adrian M. Bailey ◽  
Cathleen M. Crudden
Keyword(s):  
Lewis Acid ◽  
Acid Base ◽  
Base Pairs

scholarly journals Zirconia catalysed acetic acid ketonisation for pre-treatment of biomass fast pyrolysis vapours

2018 ◽  
Vol 8 (4) ◽  
pp. 1134-1141 ◽  
Author(s):  
Hessam Jahangiri ◽  
Amin Osatiashtiani ◽  
James A. Bennett ◽  
Mark A. Isaacs ◽  
Sai Gu ◽  
...  
Keyword(s):  
Acetic Acid ◽  
Lewis Acid ◽  
Fast Pyrolysis ◽  
Acid Sites ◽  
Active Species ◽  
Acid Base ◽  
Lewis Acid Sites ◽  
Base Pairs ◽  
Pre Treatment ◽  
Biomass Fast Pyrolysis

Weak Lewis acid sites (and/or resulting acid–base pairs) on monoclinic ZrO2 are identified as the active species responsible for acetic acid ketonisation to acetone.

Taking the F out of FLP: Simple Lewis Acid–Base Pairs for Mild Reductions with Neutral Boranes via Borenium Ion Catalysis

2012 ◽  
Vol 134 (42) ◽  
pp. 17384-17387 ◽  
Author(s):  
Patrick Eisenberger ◽  
Adrian M. Bailey ◽  
Cathleen M. Crudden
Keyword(s):  
Lewis Acid ◽  
Acid Base ◽  
Base Pairs

A Heterogeneous Metal‐Free Catalyst for Hydrogenation: Lewis Acid–Base Pairs Integrated into a Carbon Lattice

2018 ◽  
Vol 57 (42) ◽  
pp. 13800-13804 ◽  
Author(s):  
Yuxiao Ding ◽  
Xing Huang ◽  
Xianfeng Yi ◽  
Yunxiang Qiao ◽  
Xiaoyan Sun ◽  
...  
Keyword(s):  
Lewis Acid ◽  
Acid Base ◽  
Base Pairs ◽  
Metal Free

A Heterogeneous Metal‐Free Catalyst for Hydrogenation: Lewis Acid–Base Pairs Integrated into a Carbon Lattice

2018 ◽  
Vol 130 (42) ◽  
pp. 13996-14000 ◽  
Author(s):  
Yuxiao Ding ◽  
Xing Huang ◽  
Xianfeng Yi ◽  
Yunxiang Qiao ◽  
Xiaoyan Sun ◽  
...  
Keyword(s):  
Lewis Acid ◽  
Acid Base ◽  
Base Pairs ◽  
Metal Free

scholarly journals Innenrücktitelbild: A Heterogeneous Metal‐Free Catalyst for Hydrogenation: Lewis Acid–Base Pairs Integrated into a Carbon Lattice (Angew. Chem. 42/2018)

2018 ◽  
Vol 130 (42) ◽  
pp. 14131-14131
Author(s):  
Yuxiao Ding ◽  
Xing Huang ◽  
Xianfeng Yi ◽  
Yunxiang Qiao ◽  
Xiaoyan Sun ◽  
...  
Keyword(s):  
Lewis Acid ◽  
Acid Base ◽  
Base Pairs ◽  
Metal Free

Fluorescence Switching of Intramolecular Lewis Acid–Base Pairs on a Flexible Backbone

2019 ◽  
Vol 84 (9) ◽  
pp. 5394-5403
Author(s):  
Yang Cao ◽  
Nicole E. Arsenault ◽  
Duane Hean ◽  
Michael O. Wolf
Keyword(s):  
Lewis Acid ◽  
Acid Base ◽  
Base Pairs ◽  
Fluorescence Switching

Carbene-Based Lewis Pairs for Hydrogen Activation

2011 ◽  
Vol 64 (8) ◽  
pp. 1165 ◽  
Author(s):  
Jason W. Runyon ◽  
Oliver Steinhof ◽  
H. V. Rasika Dias ◽  
Joseph C. Calabrese ◽  
William J. Marshall ◽  
...  
Keyword(s):  
Transition Metal ◽  
Hydrogen Storage ◽  
Lewis Acid ◽  
Hydrogen Gas ◽  
Acid Base ◽  
Base Pairs ◽  
Imidazolium Cation ◽  
Hydrogen Activation ◽  
Imidazolium Cations ◽  
Sterically Demanding

A series of Lewis acid–base pairs containing sterically demanding carbenes were investigated for hydrogen activation that could potentially be reversible for use in hydrogen storage applications. When electron-rich boranes are employed as electrophiles, the imidazolium cation is reduced to a 2H-imidazoline (aminal). The aminals were synthesized independently by reduction of imidazolium cations with strong reducing agents. Carbocations were also found to act as electrophiles for hydrogen activation. Preliminary results revealed that it is possible to reduce an alcohol to an alkane using hydrogen gas as a reducing agent in these systems. Finally, it was demonstrated that a transition metal can be used as an electrophile to activate hydrogen through heterolytic cleavage.

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