Synthesis of azapenams, diazepinones, and dioxocyclams via the photolytic reaction of chromium alkoxycarbene complexes with imidazolines

1992 ◽  
Vol 114 (13) ◽  
pp. 5010-5017 ◽  
Author(s):  
Claudia Betschart ◽  
Louis S. Hegedus
Keyword(s):  
Photolytic Reaction

scholarly journals A Study of Catechin Photostability Using Photolytic Processing

Processes ◽  
2021 ◽  
Vol 9 (2) ◽  
pp. 293
Author(s):  
Jeu-Ming P. Yuann ◽  
Shwu-Yuan Lee ◽  
Meei-Ju Yang ◽  
Shiuh-Tsuen Huang ◽  
Chien-Wei Cheng ◽  
...  
Keyword(s):  
Ascorbic Acid ◽  
Superoxide Anion ◽  
Anion Radical ◽  
Alkaline Solutions ◽  
Light Illumination ◽  
Drug Resistant ◽  
Alkaline Ph ◽  
Radical Species ◽  
Alkaline Conditions ◽  
Photolytic Reaction

Catechin exhibits numerous physiological characteristics. In this study, we determined the photosensitivity of catechin to various lights under alkaline conditions, and the mechanisms by which catechin generates free radical species and polymerizes via a photoreaction. In addition to this, the application of catechin photolysis was investigated. A solution of catechin is transparent, but turns yellowish under blue light illumination (BLI) in neutral or weak alkaline solutions. When catechin is subjected to BLI, a dimeric catechin (proanthocyanidin) and a superoxide anion radical (O2•−) are generated in a photolytic reaction. When ascorbic acid or gallic acid is added to catechin and the mixture is subjected to BLI at alkaline pH, fewer catechin dimers and less O2•− are produced, because both acids inhibit the photosensitive oxidation of catechin. When AlCl3 is added to catechin and the mixture is subjected to BLI at pH 8, a photolytic reaction is suppressed by AlCl3, and AlCl3 acts as a catalyst for the disconnection of proanthocyanidin during photolysis. Under alkaline conditions, catechin generates O2•− via photosensitive oxidation, which suppresses the growth of Acinetobacter baumannii (A. baumannii) by at least 4 logs, and deactivates its multi-drug-resistant strain. This study shows that catechin photolysis is a process of oxidation, and that it can be safely applied as a tool for environmental applications.

ChemInform Abstract: THE PHOTOLYTIC REACTION OF THIOLS WITH DIPHENYLVINYLPHOSPHINE

1976 ◽  
Vol 7 (18) ◽  
pp. no-no
Author(s):  
DOUGLAS H. BROWN ◽  
RONALD J. CROSS ◽  
DOUGLAS MILLINGTON
Keyword(s):  
Photolytic Reaction

Spectrofluorometric Determination of Substituted Tetrahydrocarbazoles by a Methylene Blue Sensitized Photolytic Reaction

1977 ◽  
Vol 66 (3) ◽  
pp. 353-357 ◽  
Author(s):  
J. Arthur ◽  
F. de Silva ◽  
Norman Strojny ◽  
Felix Rubio ◽  
John C. Meyer ◽  
...  
Keyword(s):  
Methylene Blue ◽  
Spectrofluorometric Determination ◽  
Photolytic Reaction

Photolytic reaction of ethyl azidoformate with enol acetates

1967 ◽  
Vol 32 (10) ◽  
pp. 3057-3061 ◽  
Author(s):  
John F. W. Keana ◽  
Sue B. Keana ◽  
Dennis Beetham
Keyword(s):  
Enol Acetates ◽  
Photolytic Reaction

The photolytic reaction of thiols with diphenylvinylphosphine

1976 ◽  
pp. 334 ◽  
Author(s):  
Douglas H. Brown ◽  
Ronald J. Cross ◽  
Douglas Millington
Keyword(s):  
Photolytic Reaction

Photolytic reaction of substituted (ethynyl)benzaldehyde and Fe(CO)5: Formation of indenone and chelated iron complexes

2012 ◽  
Vol 712 ◽  
pp. 7-14 ◽  
Author(s):  
Pradeep Mathur ◽  
Badrinath Jha ◽  
Abhinav Raghuvanshi ◽  
Raj Kumar Joshi ◽  
Shaikh M. Mobin
Keyword(s):  
Iron Complexes ◽  
Chelated Iron ◽  
Photolytic Reaction
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