FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W1977382900> ?p ?o ?g. }

• W1977382900 endingPage "8628" @default.
• W1977382900 startingPage "8622" @default.
• W1977382900 abstract "γ-Radiolysis and measurements of halide ions by means of ion chromatography have been employed to investigate reductive dehalogenation of chloro-, bromo-, and iodophenols by carbon-centered radicals, •CH(CH3)OH, •CH2OH, and •CO2-, in oxygen-free aqueous solutions in the presence of ethanol, methanol, or sodium formate. While the reactions of 4-IC6H4OH with •CH(CH3)OH and •CH2OH radicals are endothermic in water/alcohol solutions, the addition of bicarbonate leads to iodide production in high yields, indicative of a chain reaction. The maximum effect has been observed with about 10 mM sodium bicarbonate present. The complex formed from an α-hydroxyalkyl radical and a bicarbonate anion is considered to cause the enhancement of the reduction power of the former to the extent at which the reduction of the iodophenol molecule becomes exothermic. No such effect has been observed with phosphate, which is a buffer with higher proton affinity, when added in the concentration of up to 20 mM at pH 7. This indicates that one-electron reduction reactions by α-hydroxyalkyl radicals occur by the concerted proton-coupled electron transfer, PCET, and not by a two-step ET/PT or PT/ET mechanisms. The reason for the negative results with phosphate buffer could be thus ascribed to a less stable complex or to the formation of a complex with a less suitable structure for an adequate support to reduce iodophenol. The reduction power of the carbonate radical anion is shown to be high enough to reduce iodophenols by a one-electron-transfer mechanism. In the presence of formate ions as H-atom donors, the dehalogenation also occurs by a chain reaction. In all systems, the chain lengths depend on the rate of reducing radical reproduction in the propagation step, that is, on the rate of H-atom abstraction from methanol, ethanol, or formate by 4-•C6H4OH radicals liberated after iodophenol dehalogenation. The rate constants of those reactions were determined from the iodide yield measurements at a constant irradiation dose rate. They were estimated to be 6 M-1 s-1 for methanol, 140 M-1 s-1 for ethanol, and 2100 M-1 s-1 for formate. Neither of the tested reducing C-centered radicals was able to dehalogenate the bromo or chloro derivative of phenol." @default.
• W1977382900 created "2016-06-24" @default.
• W1977382900 creator A5037533472 @default.
• W1977382900 creator A5053669140 @default.
• W1977382900 date "2007-08-16" @default.
• W1977382900 modified "2023-09-25" @default.
• W1977382900 title "Reductive Halogen Elimination from Phenols by Organic Radicals in Aqueous Solutions; Chain Reaction Induced by Proton-Coupled Electron Transfer" @default.
• W1977382900 cites W1926950498 @default.
• W1977382900 cites W1964249238 @default.
• W1977382900 cites W1967966591 @default.
• W1977382900 cites W1975595814 @default.
• W1977382900 cites W1979424160 @default.
• W1977382900 cites W1981989568 @default.
• W1977382900 cites W2025775055 @default.
• W1977382900 cites W2039043506 @default.
• W1977382900 cites W2046447964 @default.
• W1977382900 cites W2049822774 @default.
• W1977382900 cites W2052431935 @default.
• W1977382900 cites W2054192647 @default.
• W1977382900 cites W2061019756 @default.
• W1977382900 cites W2071827494 @default.
• W1977382900 cites W2079048865 @default.
• W1977382900 cites W2089921133 @default.
• W1977382900 cites W271395101 @default.
• W1977382900 doi "https://doi.org/10.1021/jp0726844" @default.
• W1977382900 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/17696504" @default.
• W1977382900 hasPublicationYear "2007" @default.
• W1977382900 type Work @default.
• W1977382900 sameAs 1977382900 @default.
• W1977382900 citedByCount "14" @default.
• W1977382900 countsByYear W19773829002012 @default.
• W1977382900 countsByYear W19773829002013 @default.
• W1977382900 countsByYear W19773829002016 @default.
• W1977382900 countsByYear W19773829002018 @default.
• W1977382900 countsByYear W19773829002019 @default.
• W1977382900 countsByYear W19773829002021 @default.
• W1977382900 countsByYear W19773829002022 @default.
• W1977382900 crossrefType "journal-article" @default.
• W1977382900 hasAuthorship W1977382900A5037533472 @default.
• W1977382900 hasAuthorship W1977382900A5053669140 @default.
• W1977382900 hasConcept C123669783 @default.
• W1977382900 hasConcept C139066938 @default.
• W1977382900 hasConcept C161790260 @default.
• W1977382900 hasConcept C178790620 @default.
• W1977382900 hasConcept C179104552 @default.
• W1977382900 hasConcept C184651966 @default.
• W1977382900 hasConcept C185592680 @default.
• W1977382900 hasConcept C2776507403 @default.
• W1977382900 hasConcept C2779607525 @default.
• W1977382900 hasConcept C2780178953 @default.
• W1977382900 hasConcept C2781112554 @default.
• W1977382900 hasConcept C66887884 @default.
• W1977382900 hasConcept C75473681 @default.
• W1977382900 hasConceptScore W1977382900C123669783 @default.
• W1977382900 hasConceptScore W1977382900C139066938 @default.
• W1977382900 hasConceptScore W1977382900C161790260 @default.
• W1977382900 hasConceptScore W1977382900C178790620 @default.
• W1977382900 hasConceptScore W1977382900C179104552 @default.
• W1977382900 hasConceptScore W1977382900C184651966 @default.
• W1977382900 hasConceptScore W1977382900C185592680 @default.
• W1977382900 hasConceptScore W1977382900C2776507403 @default.
• W1977382900 hasConceptScore W1977382900C2779607525 @default.
• W1977382900 hasConceptScore W1977382900C2780178953 @default.
• W1977382900 hasConceptScore W1977382900C2781112554 @default.
• W1977382900 hasConceptScore W1977382900C66887884 @default.
• W1977382900 hasConceptScore W1977382900C75473681 @default.
• W1977382900 hasIssue "35" @default.
• W1977382900 hasLocation W19773829001 @default.
• W1977382900 hasLocation W19773829002 @default.
• W1977382900 hasOpenAccess W1977382900 @default.
• W1977382900 hasPrimaryLocation W19773829001 @default.
• W1977382900 hasRelatedWork W1981845529 @default.
• W1977382900 hasRelatedWork W2006549952 @default.
• W1977382900 hasRelatedWork W2008960453 @default.
• W1977382900 hasRelatedWork W2036370495 @default.
• W1977382900 hasRelatedWork W2041379037 @default.
• W1977382900 hasRelatedWork W2052796882 @default.
• W1977382900 hasRelatedWork W2084855492 @default.
• W1977382900 hasRelatedWork W2102479837 @default.
• W1977382900 hasRelatedWork W276110808 @default.
• W1977382900 hasRelatedWork W1502243880 @default.
• W1977382900 hasVolume "111" @default.
• W1977382900 isParatext "false" @default.
• W1977382900 isRetracted "false" @default.
• W1977382900 magId "1977382900" @default.
• W1977382900 workType "article" @default.