scholarly journals Parahydrogen‐Induced Polarization in Hydrogenation Reactions Mediated by a Metal‐Free Catalyst

2021 ◽  
Author(s):  
Danila O. Zakharov ◽  
Konstantin Chernichenko ◽  
Kristina Sorochkina ◽  
Shengjun Yang ◽  
Ville-Veikko Telkki ◽  
...  
Keyword(s):  
Induced Polarization ◽  
Metal Free ◽  
Hydrogenation Reactions

para-Hydrogen-Induced Polarization in Heterogeneous Hydrogenation Reactions

2007 ◽  
Vol 129 (17) ◽  
pp. 5580-5586 ◽  
Author(s):  
Igor V. Koptyug ◽  
Kirill V. Kovtunov ◽  
Scott R. Burt ◽  
M. Sabieh Anwar ◽  
Christian Hilty ◽  
...  
Keyword(s):  
Induced Polarization ◽  
Para Hydrogen ◽  
Hydrogenation Reactions ◽  
Heterogeneous Hydrogenation

Para hydrogen induced polarization in hydrogenation reactions

1987 ◽  
Vol 109 (26) ◽  
pp. 8089-8091 ◽  
Author(s):  
Thomas C. Eisenschmid ◽  
Rein U. Kirss ◽  
Paul P. Deutsch ◽  
Sven I. Hommeltoft ◽  
Richard Eisenberg ◽  
...  
Keyword(s):  
Induced Polarization ◽  
Para Hydrogen ◽  
Hydrogenation Reactions

Alkenylborane-Derived Frustrated Lewis Pairs: Metal-Free Catalytic Hydrogenation Reactions of Electron-Deficient Alkenes

2012 ◽  
Vol 31 (15) ◽  
pp. 5638-5649 ◽  
Author(s):  
J. Sreedhar Reddy ◽  
Bao-Hua Xu ◽  
Tayseer Mahdi ◽  
Roland Fröhlich ◽  
Gerald Kehr ◽  
...  
Keyword(s):  
Catalytic Hydrogenation ◽  
Frustrated Lewis Pairs ◽  
Metal Free ◽  
Hydrogenation Reactions ◽  
Lewis Pairs

Heterogeneous hydrogenation of phenylalkynes with parahydrogen: hyperpolarization, reaction selectivity, and kinetics

2019 ◽  
Vol 21 (48) ◽  
pp. 26477-26482 ◽  
Author(s):  
Ekaterina V. Pokochueva ◽  
Kirill V. Kovtunov ◽  
Oleg G. Salnikov ◽  
Max E. Gemeinhardt ◽  
Larisa M. Kovtunova ◽  
...  
Keyword(s):  
Induced Polarization ◽  
Reaction Selectivity ◽  
Powerful Technique ◽  
Liquid Phases ◽  
Hydrogenation Reactions ◽  
Heterogeneous Hydrogenation

Parahydrogen-induced polarization (PHIP) is a powerful technique for studying hydrogenation reactions in both gas and liquid phases.

scholarly journals Nuclear spin hyperpolarization with ansa-aminoboranes: a metal-free perspective for parahydrogen-induced polarization

2016 ◽  
Vol 18 (40) ◽  
pp. 27784-27795 ◽  
Author(s):  
Vladimir V. Zhivonitko ◽  
Kristina Sorochkina ◽  
Konstantin Chernichenko ◽  
Bianka Kótai ◽  
Tamás Földes ◽  
...  
Keyword(s):  
Nuclear Spin ◽  
Induced Polarization ◽  
Metal Free

A series of new ansa-aminoboranes was analyzed experimentally and theoretically for metal-free production of parahydrogen-induced polarization.

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.

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