Electron-Transfer-Initiated Cascade Cyclizations of Terpenoid Polyalkenes in a Low-Polarity Solvent: One-Step Synthesis of Mono- and Polycylic Terpenoids with Various Functionalities

2004 ◽  
Vol 2004 (17) ◽  
pp. 3686-3692 ◽  
Author(s):  
Mustafa E. Ozser ◽  
Huriye Icil ◽  
Yevgeny Makhynya ◽  
Martin Demuth
Keyword(s):  
Electron Transfer ◽  
Cascade Cyclizations ◽  
One Step

scholarly journals Electron Transfer Initiated Heterogenerative Cascade Cyclizations:  Polyether Synthesis under Nonacidic Conditions

2003 ◽  
Vol 5 (14) ◽  
pp. 2581-2581
Author(s):  
V. Satish Kumar ◽  
Danielle L. Aubele ◽  
Paul E. Floreancig
Keyword(s):  
Electron Transfer ◽  
Cascade Cyclizations

Production of an Ultra-Long-Lived Charge-Separated State in a Zinc Chlorin–C60 Dyad by One-Step Photoinduced Electron Transfer

2004 ◽  
Vol 43 (7) ◽  
pp. 853-856 ◽  
Author(s):  
Kei Ohkubo ◽  
Hiroaki Kotani ◽  
Jianguo Shao ◽  
Zhongping Ou ◽  
Karl M. Kadish ◽  
...  
Keyword(s):  
Electron Transfer ◽  
Photoinduced Electron Transfer ◽  
One Step

A High Energy Rechargeable Battery Based on a One-Step Successive Two-Electron Transfer Process

2005 ◽  
Vol 8 (8) ◽  
pp. A382 ◽  
Author(s):  
Kentarou Nishi ◽  
Toyohiko Nishiumi ◽  
Masayoshi Higuchi ◽  
Kimihisa Yamamoto
Keyword(s):  
Electron Transfer ◽  
Transfer Process ◽  
High Energy ◽  
Rechargeable Battery ◽  
Electron Transfer Process ◽  
One Step

scholarly journals Proton-Coupled Electron Transfer in the Reaction of 3,4-Dihydroxyphenylpyruvic Acid with Reactive Species in Various Media

2015 ◽  
Vol 2015 ◽  
pp. 1-13 ◽  
Author(s):  
J. J. Fifen ◽  
Z. Dhaouadi ◽  
M. Nsangou ◽  
O. Holtomo ◽  
N. Jaidane
Keyword(s):  
Electron Transfer ◽  
Proton Transfer ◽  
Activation Barrier ◽  
Bond Cleavage ◽  
Hydrogen Atom Transfer ◽  
Free Energies ◽  
Solvent Interactions ◽  
Proton Coupled Electron Transfer ◽  
Nonpolar Solvents ◽  
One Step

The distinction of concerted proton-coupled electron transfer (CPCET) from sequential one as well as proton transfer-electron transfer (PT-ET) from electron transfer-proton transfer (ET-PT) in the O–H bond cleavage reactions in various media has always been a difficult task. In this work, the activation barrier of the CPCET mechanism, its rate constants, and reaction free energies related to ET-PT and PT-ET involving coreactive species were presented as good parameters to attempt the problem. DFT calculations were carried out studying the described pathways subsequent to the scavenging of OH• and OBr- by the 3,4-DHPPA in various media. The solvation was described in a hybrid manner using IEF-PCM model conjointly with a model that takes into account some solute-solvent interactions. As a result, we found that the scavenging of hydroxyl radical by 3,4-DHPPA is thermodynamically governed by a one-step hydrogen atom transfer (CPCET) from the acid to the radical in all media. In kinetic viewpoint, CPCET still dominates in the vacuum and in nonpolar solvents, but in polar solvents it could compete strongly with the ET-PT mechanism so that the latter could slightly dominate.

scholarly journals Photoinduced triplet-state electron transfer of platinum porphyrin: a one-step direct method for sensing iodide with an unprecedented detection limit

2015 ◽  
Vol 3 (13) ◽  
pp. 6733-6738 ◽  
Author(s):  
Dilshad Masih ◽  
Shawkat M. Aly ◽  
Erkki Alarousu ◽  
Omar F. Mohammed
Keyword(s):  
Electron Transfer ◽  
Detection Limit ◽  
Triplet State ◽  
Direct Method ◽  
Economical Method ◽  
State Electron ◽  
One Step ◽  
Platinum Porphyrin ◽  
First Time

Herein, we report for the first time the photoinduced triplet-state electron transfer of Pt(ii)TMPyP as an easy, rapid, environmentally friendly, ultra-sensitive and economical method for the determination of iodide in the aqueous phase.

Electron Transfer Initiated Heterogenerative Cascade Cyclizations:  Polyether Synthesis under Nonacidic Conditions

2002 ◽  
Vol 4 (15) ◽  
pp. 2489-2492 ◽  
Author(s):  
V. Satish Kumar ◽  
Danielle L. Aubele ◽  
Paul E. Floreancig
Keyword(s):  
Electron Transfer ◽  
Cascade Cyclizations
Sign in / Sign up

Export Citation Format

Share Document