Pulse radiolysis studies on redox reactions of gallic acid: one electron oxidation of gallic acid by gallic acid–OH adduct
文献情報
Using the pulse radiolysis technique, studies on reactions of 3,4,5-trihydroxybenzoic acid [gallic acid (GA)] with radical species generated in water are reported. At pH 6.8 and 9.7, OH radicals react with GA to give an adduct initially with rate constants of the order of 1×1010 d mol-1 s-1. This adduct then reacts with parent GA molecules with rate constants of the order 5×108 d mol-1 s-1 to give phenoxyl type radical species having absorption maxima in the 350 nm region. At pH 12 and 13.6, OH/O- radicals directly bring about oxidation of GA. Specific oxidants like azidyl radical bring about one electron oxidation at neutral and alkaline pHs with almost diffusion controlled rate constants. Rate constants for the reaction of Br2- radicals are found to be lower than those for OH radicals by an order of magnitude. At pH 0, both OH and Cl2- radicals react with GA to give phenoxyl type radicals. The phenoxyl radicals formed are quite stable at higher pHs, which make GA a good antioxidant. Rate constants for the reactions of eaq- with different protolytic forms of GA are determined.
関連文献
Operation range extension via hot-spot control for catalytic CO2 methanation reactors
Jens Bremer
DOI: 10.1039/C9RE00147F
Simulation of exotherms from the oxidation of accumulated carbonaceous species over a VSCR catalyst
Yuanzhou Xi, Nathan A. Ottinger, Z. Gerald Liu
DOI: 10.1039/C8RE00291F
Ruthenium polypyridyl complex-catalysed aryl alkoxylation of styrenes: improving reactivity using a continuous flow photo-microreactor
Eiji Yamaguchi, Nao Taguchi, Akichika Itoh
DOI: 10.1039/C9RE00061E
Peroxidation of 2-oxindole and barbituric acid derivatives under batch and continuous flow using an eco-friendly ethyl acetate solvent
Moreshwar B. Chaudhari, Nirmala Mohanta, Akanksha M. Pandey, Madhusoodhanan Vandana, Krishanpal Karmodiya, Boopathy Gnanaprakasam
DOI: 10.1039/C9RE00068B
Continuous flow kinetic resolution of a non-equimolar mixture of diastereoisomeric alcohol using a structured monolithic enzymatic microreactor
Katarzyna Szymańska, Zofia Hrydziuszko, Jolanta Bryjak
DOI: 10.1039/C8RE00177D
Microfluidic synthesis of α-ketoesters via oxidative coupling of acetophenones with alcohols under metal-free conditions
Shiyu Guo, Zhongxue Dai, Jiawei Hua, Zhao Yang, Zheng Fang
DOI: 10.1039/C7RE00107J
Impact of cation redox chemistry on continuous hydrothermal synthesis of 2D-Ni(Co/Fe) hydroxides
Massimo Rosa, Debora Marani, Giovanni Perin, Søren Bredmose Simonsen, Philipp Zielke, Antonella Glisenti, Ragnar Kiebach, Andreas Lesch, Vincenzo Esposito
DOI: 10.1039/C9RE00334G
こちらもおすすめ
間溴苯甲酰腈の市場動向や研究トレンドはどうですか?
間 brom 苯甲酰腈は、合成化学や薬物化学において重要な Intermediate として使用されています。市場動向としては、その合成性と機能性により、研究開...
Methyl 2-amino-5-(trifluoromethyl)benzoateに適用される法規ガイドラインは何ですか?
CAS番号117324-58-0の塩酸メチル2アミノ-5-トリフルオロメチルベンゼートは、GHS分類により腐食性物質と判定されます。REACH規則では、製造、販...
3-ブロモ-1,3,4,5-四水化-2H-1-ベンザアゼピン-2-オンは安全ですか?
毒性があるため、適切な安全対策が必須です。皮膚や粘膜への刺激性が強く、吸入や誤飲により健康被害を引き起こす可能性があります。取扱時にはガスマスクや手袋、眼鏡を使...
三氟甲基ピリジン-2-甲アミン塩酸塩は安全ですか?
三氟甲基ピリジン-2-甲アミン塩酸塩は安全性に注意が必要です。毒性は低レベルですが、直接的接触や吸入は避けるべきです。適切な手袋や防塵マスクを着用し、密閉された...
1-エチル-4-(4-硝基フェニル)ピペリジンは安全ですか?
1-エチル-4-(4-硝基フェニル)ピペリジンは有毒であり、取扱には注意が必要です。保管や作業中に手袋を着用し、目や皮膚に接触しないように注意する必要があります...
1,1-ジメトキシプロパン-2-オンは安全ですか?
1,1-ジメトキシプロパン-2-オンは一般的に低毒性ですが、皮膚や目への刺激性があるため、取扱いには注意が必要です。蒸気や液体の吸入には有害な可能性があり、適切...
コバルト(II) 3,3'-{[(1S,2S)-1,2-ジメチルフENCYCLICALE-1,2-エチエンジイル]ビス[ニトロリルメチルイリデン]}ビス[4-オキソ-2-ペンテン-2-olate]について「に適用される法規ガイドラインは何ですか?
この化合物はCAS番号259259-80-8に対応しています。GHS分類では、毒性、燃焼性、反応性、炎症性を考慮に入れ、適切な危険性分類が行われます。REACH...
「カーバミル酸, N-[8-[[2-[[2-(2,6-ジオキソ-3-ピペリジニル)-2,3-ジオキソ-1,3-ジヒドロ-1H-イソイソインドール-4-イルオキシ]アセチル]アミノ]オクチル]-1,1-ジメチレチルエステル」はどのように保存すればよいですか?
この化合物は、冷却庫で-20℃の温度、乾燥した容器に保管し、直日光から保護する必要があります。湿度の高い環境や高温は避けてください。
掲載誌
Physical Chemistry Chemical Physics

Physical Chemistry Chemical Physics (PCCP) is an international journal co-owned by 19 physical chemistry and physics societies from around the world. This journal publishes original, cutting-edge research in physical chemistry, chemical physics and biophysical chemistry. To be suitable for publication in PCCP, articles must include significant innovation and/or insight into physical chemistry; this is the most important criterion that reviewers and Editors will judge against when evaluating submissions. The journal has a broad scope and welcomes contributions spanning experiment, theory, computation and data science. Topical coverage includes spectroscopy, dynamics, kinetics, statistical mechanics, thermodynamics, electrochemistry, catalysis, surface science, quantum mechanics, quantum computing and machine learning. Interdisciplinary research areas such as polymers and soft matter, materials, nanoscience, energy, surfaces/interfaces, and biophysical chemistry are welcomed if they demonstrate significant innovation and/or insight into physical chemistry. Joined experimental/theoretical studies are particularly appreciated when complementary and based on up-to-date approaches.











![(3R)-3-(3-Fluorophenyl)-3-({[(2-methyl-2-propanyl)oxy]carbonyl}amino)propanoic acid structure (3R)-3-(3-Fluorophenyl)-3-({[(2-methyl-2-propanyl)oxy]carbonyl}amino)propanoic acid structure](https://static.chemtradehub.com/structs/500/500789-04-8-20dd.webp)
![5-(2-Phenylpyrazolo[1,5-a]pyridin-3-yl)-2H-pyrazolo[3,4-c]pyridazin-3-amine structure 5-(2-Phenylpyrazolo[1,5-a]pyridin-3-yl)-2H-pyrazolo[3,4-c]pyridazin-3-amine structure](https://static.chemtradehub.com/structs/865/865362-74-9-0091.webp)

