scholarly journals Cover Picture: Mild and Robust Redox-Neutral Pd/C-Catalyzed Lignol β-O-4′ Bond Cleavage Through a Low-Energy-Barrier Pathway (ChemSusChem 13/2015)

ChemSusChem ◽  
2015 ◽  
Vol 8 (13) ◽  
pp. 2140-2140 ◽  
Author(s):  
Maxim V. Galkin ◽  
Christian Dahlstrand ◽  
Joseph S. M. Samec
Keyword(s):  
Energy Barrier ◽  
Bond Cleavage ◽  
Low Energy

Mild and Robust Redox-Neutral Pd/C-Catalyzed Lignol β-O-4′ Bond Cleavage Through a Low-Energy-Barrier Pathway

ChemSusChem ◽  
2015 ◽  
Vol 8 (13) ◽  
pp. 2187-2192 ◽  
Author(s):  
Maxim V. Galkin ◽  
Christian Dahlstrand ◽  
Joseph S. M. Samec
Keyword(s):  
Energy Barrier ◽  
Bond Cleavage ◽  
Low Energy

scholarly journals Mild and Robust Redox-Neutral Pd/C-Catalyzed Lignol β-O-4′ Bond Cleavage Through a Low-Energy-Barrier Pathway

ChemSusChem ◽  
2015 ◽  
Vol 8 (13) ◽  
pp. 2142-2142 ◽  
Author(s):  
Maxim V. Galkin ◽  
Christian Dahlstrand ◽  
Joseph S. M. Samec
Keyword(s):  
Energy Barrier ◽  
Bond Cleavage ◽  
Low Energy

scholarly journals Selective bond cleavage in RAFT agents promoted by low‐energy electron attachment

2021 ◽  
Author(s):  
Farhad Izadi ◽  
Eugene Arthur-Baidoo ◽  
Lisa T. Strover ◽  
Li-Juan Yu ◽  
Michelle L. Coote ◽  
...  
Keyword(s):  
Bond Cleavage ◽  
Electron Attachment ◽  
Low Energy ◽  
Energy Electron ◽  
Low Energy Electron

scholarly journals Fast and Highly Chemoselective Alkynylation of Thiols with Hypervalent Iodine Reagents Enabled through a Low Energy Barrier Concerted Mechanism

2014 ◽  
Vol 136 (47) ◽  
pp. 16563-16573 ◽  
Author(s):  
Reto Frei ◽  
Matthew D. Wodrich ◽  
Durga Prasad Hari ◽  
Pierre-Antoine Borin ◽  
Clément Chauvier ◽  
...  
Keyword(s):  
Energy Barrier ◽  
Low Energy ◽  
Hypervalent Iodine ◽  
Concerted Mechanism

Dinaphtho[2,1-b:1′,2′-d]thiophenes as High Refractive Index Materials Exploiting the Potential Characteristics of “Dynamic Thiahelicenes”

2021 ◽  
Author(s):  
Yoko Nambu ◽  
Yoko Yoshitake ◽  
Shohan Yanagi ◽  
Kenji Mineyama ◽  
Keisuke Tsurui ◽  
...  
Keyword(s):  
Refractive Index ◽  
Energy Barrier ◽  
High Refractive Index ◽  
Low Energy ◽  
Careful Evaluation

Dinaphtho[2,1-b:1′,2′-d]thiophene (DNT) is one of the “dynamic thiahelicenes” that is obtained as a racemate due to its low energy barrier for enantiomerization. Careful evaluation of both the metastable DNT film...

scholarly journals The effect of adenine protonation on RNA phosphodiester backbone bond cleavage elucidated by deaza-nucleobase modifications and mass spectrometry

2019 ◽  
Vol 47 (14) ◽  
pp. 7223-7234 ◽  
Author(s):  
Elisabeth Fuchs ◽  
Christoph Falschlunger ◽  
Ronald Micura ◽  
Kathrin Breuker
Keyword(s):  
Mass Spectrometry ◽  
Gas Phase ◽  
Vibrational Excitation ◽  
Bond Cleavage ◽  
Low Energy ◽  
Biological Processes ◽  
Phosphodiester Backbone ◽  
Collisionally Activated Dissociation ◽  
Rna Backbone ◽  
Ionic Hydrogen Bonds

Abstract The catalytic strategies of small self-cleaving ribozymes often involve interactions between nucleobases and the ribonucleic acid (RNA) backbone. Here we show that multiply protonated, gaseous RNA has an intrinsic preference for the formation of ionic hydrogen bonds between adenine protonated at N3 and the phosphodiester backbone moiety on its 5′-side that facilitates preferential phosphodiester backbone bond cleavage upon vibrational excitation by low-energy collisionally activated dissociation. Removal of the basic N3 site by deaza-modification of adenine was found to abrogate preferential phosphodiester backbone bond cleavage. No such effects were observed for N1 or N7 of adenine. Importantly, we found that the pH of the solution used for generation of the multiply protonated, gaseous RNA ions by electrospray ionization affects phosphodiester backbone bond cleavage next to adenine, which implies that the protonation patterns in solution are at least in part preserved during and after transfer into the gas phase. Our study suggests that interactions between protonated adenine and phosphodiester moieties of RNA may play a more important mechanistic role in biological processes than considered until now.

MOF-derived Co1.11Te2 with half-metallic character for efficient photochemical conversion of CO2 under visible-light irradiation

2019 ◽  
Vol 55 (48) ◽  
pp. 6862-6865 ◽  
Author(s):  
Yong Xu ◽  
Jiang Mo ◽  
Guanqun Xie ◽  
Dawei Ding ◽  
Shujiang Ding ◽  
...  
Keyword(s):  
Electron Transfer ◽  
Catalytic Activity ◽  
Energy Barrier ◽  
Catalytic Performance ◽  
Carbon Layer ◽  
Low Energy ◽  
High Catalytic Activity ◽  
Key Factors ◽  
Strong Electron ◽  
Half Metallic

Co1.11Te2 enwrapped in a carbon layer displayed high catalytic performance for photocatalytic CO2 reduction. The strong electron transfer ability and the low energy barrier are the key factors that promote its high catalytic activity.

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