Development of silica-supported frustrated Lewis pairs: highly active transition metal-free catalysts for the Z-selective reduction of alkynes

2016 ◽  
Vol 6 (3) ◽  
pp. 882-889 ◽  
Author(s):  
Kai C. Szeto ◽  
Wissam Sahyoun ◽  
Nicolas Merle ◽  
Jessica Llop Castelbou ◽  
Nicolas Popoff ◽  
...  
Keyword(s):  
Transition Metal ◽  
Lewis Acid ◽  
Selective Reduction ◽  
Frustrated Lewis Pairs ◽  
Acid Base ◽  
Metal Free ◽  
Highly Active ◽  
Active Transition ◽  
Lewis Pairs

Supported Lewis acid/base systems based have been prepared and characterized.

Understanding the Reactivity of Geminal P/B and P/Al Frustrated Lewis Pairs in CO2 Addition and H2 Activation

2021 ◽  
Author(s):  
Muhammad Dzulfahmi Ramadhan ◽  
Panida Surawatanawong
Keyword(s):  
Transition Metal ◽  
Frustrated Lewis Pairs ◽  
Metal Free ◽  
Co2 Addition ◽  
Lewis Pairs

Understanding CO2 addition and H2 activation by geminal P/Z (Z = B, Al) frustrated Lewis pairs (FLPs) is crucial for the development of transition metal-free catalysts for hydrogenation of unsaturated...

Synthesis and Applications of Chiral Bicyclic Bisborane Catalysts

Synthesis ◽  
2021 ◽  
Author(s):  
Zhao-Ying Yang ◽  
Ming Zhang ◽  
Xiao-Chen Wang
Keyword(s):  
Transition Metal ◽  
Lewis Acid ◽  
Asymmetric Hydrogenation ◽  
Acid Catalysts ◽  
Frustrated Lewis Pairs ◽  
Lewis Acid Catalysts ◽  
Lewis Bases ◽  
Metal Free ◽  
Hydrogenation Reactions ◽  
Acid Catalyzed

The development of chiral borane Lewis acid catalysts opened the door for transition-metal-free catalyzed asymmetric organic reactions. Herein, we have summarized our work on the preparation of two classes of novel chiral bicyclic bisborane Lewis acid catalysts derived from C2-symmetric [3.3.0] dienes and [4.4] dienes, respectively. These catalysts not only form frustrated Lewis pairs with Lewis bases to catalyze asymmetric hydrogenation reactions but also activate Lewis basic functional groups in traditional Lewis acid catalyzed asymmetric reactions.

scholarly journals Metal-free electrocatalytic hydrogen oxidation using frustrated Lewis pairs and carbon-based Lewis acids

2016 ◽  
Vol 7 (4) ◽  
pp. 2537-2543 ◽  
Author(s):  
Elliot J. Lawrence ◽  
Ewan R. Clark ◽  
Liam D. Curless ◽  
James M. Courtney ◽  
Robin J. Blagg ◽  
...  
Keyword(s):  
Lewis Acid ◽  
Lewis Acids ◽  
Hydrogen Oxidation ◽  
Synergistic Interaction ◽  
Frustrated Lewis Pairs ◽  
Metal Free ◽  
Carbon Based ◽  
Lewis Pairs

The synergistic interaction of a carbon-centred Lewis acid and borane “hydride shuttle” offers a metal-free, CO tolerant pathway to hydrogen oxidation.

Reversible, metal-free hydrogenactivation by frustrated Lewis pairs

2011 ◽  
Vol 40 (5) ◽  
pp. 1091-1097 ◽  
Author(s):  
Chunfang Jiang ◽  
Olivier Blacque ◽  
Thomas Fox ◽  
Heinz Berke
Keyword(s):  
Frustrated Lewis Pairs ◽  
Metal Free ◽  
Lewis Pairs

Novel Naproxen Derivatives: Lewis Acid/Transition-metal Free Synthesis via C-C Bond Forming Reaction

2007 ◽  
Vol 4 (4) ◽  
pp. 292-295 ◽  
Author(s):  
Sarbani Pal ◽  
P. Bindu ◽  
Pragnyadhar Reddy Venna ◽  
P. K. Dubey
Keyword(s):  
Transition Metal ◽  
Lewis Acid ◽  
Metal Free ◽  
Bond Forming

Hydrogenation of Olefins, Alkynes, Allenes, and Arenes by Borane-based Frustrated Lewis Pairs

Synthesis ◽  
2021 ◽  
Author(s):  
Felix Wech ◽  
Urs Gellrich
Keyword(s):  
Transition Metal ◽  
Hydride Transfer ◽  
Lewis Base ◽  
Catalytic Reactions ◽  
Transfer Reactions ◽  
Organic Substrates ◽  
Frustrated Lewis Pairs ◽  
Hydrogen Activation ◽  
Hydrogenation Catalysts ◽  
Lewis Pairs

In recent years, borane-based frustrated Lewis pairs proved to be efficient hydrogenation catalysts and became an alternative to transition metal-based systems. The hydrogen activation by classic FLPs leads to a protonated Lewis base and a borohydride. Consequently, hydrogenations catalyzed by classic FLPs consist of stepwise hydride transfer reactions and protonations (or vice versa). More recently, systems that operate via an initial hydroboration have allowed extending the substrate scope for FLP catalyzed hydrogenations. Within this review, hydrogenations of organic substrates catalyzed by borane-based frustrated Lewis pairs are discussed. Emphasis is given to the mechanistic aspects of these catalytic reactions.

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