Ascorbic acid photoreductions of zinc(II) chlorophyll derivatives: access to metal-free isobacteriochlorins

1988 ◽  
Vol 110 (9) ◽  
pp. 2854-2861 ◽  
Author(s):  
Daniel J. Simpson ◽  
Kevin M. Smith
Keyword(s):  
Ascorbic Acid ◽  
Metal Free ◽  
Chlorophyll Derivatives

scholarly journals Sodium nitrite and ascorbic acid: a metal-free combination that controls the free-radical polymerization of tert-butyl methacrylate in water

e-Polymers ◽  
2002 ◽  
Vol 2 (1) ◽  
Author(s):  
Christophe Detrembleur ◽  
Ange Mouithys-Mickalad ◽  
Philippe Teyssié ◽  
Robert Jérôme
Keyword(s):  
Nitric Oxide ◽  
Ascorbic Acid ◽  
Free Radical ◽  
Radical Polymerization ◽  
Sodium Nitrite ◽  
Free Radical Polymerization ◽  
Nitroxyl Radicals ◽  
Butyl Methacrylate ◽  
Metal Free ◽  
Tert Butyl

AbstractA mixture of sodium nitrite and ascorbic acid is able to control the radical polymerization of tert-butyl methacrylate (tBMA) in water at 80°C. Indeed, sodium nitrite is reduced by the ascorbic acid, and the nitric oxide (NO) which is formed insitu is nothing but a promoter of nitroxyl radicals. The radical polymerization of tBMA is thus basically controlled by a nitroxide-mediated process.

Ascorbic Acid Promoted Metal-Free Synthesis of Aryl Sulfides with Anilines Nitrosated in Situ by tert-Butyl Nitrite

Synlett ◽  
2015 ◽  
Vol 26 (13) ◽  
pp. 1841-1846 ◽  
Author(s):  
Chun Cai ◽  
Mei-jie Bu ◽  
Guo-ping Lu
Keyword(s):  
Ascorbic Acid ◽  
Metal Free ◽  
Tert Butyl ◽  
Aryl Sulfides

scholarly journals Photosensitizing Decomposition of L-Ascorbic Acid by Chlorophylls and Chlorophyll Derivatives

1970 ◽  
Vol 23 (6) ◽  
pp. 379-385
Author(s):  
Yasunori Mori ◽  
Mariko Ueda ◽  
Akiko Miyake ◽  
Kazuko Miwa
Keyword(s):  
Ascorbic Acid ◽  
Chlorophyll Derivatives

Enhanced photocatalytic H2 production on CdS nanorods with simple molecular bidentate cobalt complexes as cocatalysts under visible light

2016 ◽  
Vol 45 (32) ◽  
pp. 12897-12905 ◽  
Author(s):  
Rana Muhammad Irfan ◽  
Daochuan Jiang ◽  
Zijun Sun ◽  
Dapeng Lu ◽  
Pingwu Du
Keyword(s):  
Ascorbic Acid ◽  
Schiff Base ◽  
Hydrogen Production ◽  
Visible Light ◽  
Production System ◽  
Schiff Base Complex ◽  
Cobalt Complexes ◽  
H2 Production ◽  
Metal Free ◽  
Cds Nanorods

A noble-metal-free photocatalytic hydrogen production system containing a simple bidentate cobalt Schiff base complex as the molecular cocatalyst, CdS nanorods as the photosensitizer, and ascorbic acid as the electron donor is reported in this paper.

l-Ascorbic acid oxygen-induced micro-electronic fields over metal-free polyimide for peroxymonosulfate activation to realize efficient multi-pathway destruction of contaminants

2020 ◽  
Vol 8 (2) ◽  
pp. 810-819 ◽  
Author(s):  
Wenrui Cao ◽  
Lai Lyu ◽  
Kanglan Deng ◽  
Chao Lu ◽  
Chun Hu
Keyword(s):  
Ascorbic Acid ◽  
Metal Free

Efficient multi-pathway destruction of pollutants is realized over metal-free OVc-CNOP Nfs by PMS activation.

scholarly journals Correction: l-Ascorbic acid oxygen-induced micro-electronic fields over metal-free polyimide for peroxymonosulfate activation to realize efficient multi-pathway destruction of contaminants

2020 ◽  
Vol 8 (4) ◽  
pp. 2147-2147
Author(s):  
Wenrui Cao ◽  
Lai Lyu ◽  
Kanglan Deng ◽  
Chao Lu ◽  
Chun Hu
Keyword(s):  
Ascorbic Acid ◽  
Metal Free

Correction for ‘l-Ascorbic acid oxygen-induced micro-electronic fields over metal-free polyimide for peroxymonosulfate activation to realize efficient multi-pathway destruction of contaminants’ by Wenrui Cao et al., J. Mater. Chem. A, 2020, DOI: 10.1039/c9ta10284a.

Real Metal-Free C-H Arylation of (Hetero)arenes: The Radical Way

Synthesis ◽  
2021 ◽  
Author(s):  
Fabio Bellina
Keyword(s):  
Ascorbic Acid ◽  
Aryl Halides ◽  
Diazonium Salts ◽  
Atom Economy ◽  
Chlorpromazine Hydrochloride ◽  
Metal Free ◽  
Aryl Radicals ◽  
Diaryliodonium Salts ◽  
Carbon Carbon Bonds ◽  
Synthetic Methodologies

Synthetic methodologies involving the formation of carbon-carbon bonds from carbon-hydrogen bonds are of significant synthetic interest, both for efficiency in terms of atom economy and for their undeniable usefulness in late-stage functionalization approaches. Combining these aspects with being metal-free, the radical C-H intermolecular arylation procedures covered by this review represent a powerful green means for the synthesis of (hetero)biaryl systems. 1. Introduction 2. Arylation with arenediazonium salts and related derivatives 2.1. Ascorbic acid as reductant 2.2. Hydrazines as reductants 2.3. Gallic acid as reductant 2.4. Polyanilines as reductants 2.5. Chlorpromazine hydrochloride as reductant 2.6 Phenalenyl-based radicals as reductants 2.7 Electrolytic reduction of diazonium salts 2.8 Visible-light mediated arylation 3. Arylation with arylhydrazines: generation of aryl radicals using an oxidant 4. Arylation with diaryliodonium salts 5. Arylation with aryl halides 6. Conclusions

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