Zobrazeno 1 - 10 of 38 pro vyhledávání: '"Liliana Rampazzo"'
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Electrochemistry of a spirolactone
Autor: Leonardo Mattiello, Liliana Rampazzo
Publikováno v: Journal of Electroanalytical Chemistry. 507:118-123
The 1,2,6,7-tetraphenyl-4-oxa-spiro[2.4]hepta-1,6-dien-5-one (spirolactone, 1 ) has been prepared and investigated with reference to its redox properties, using cyclic voltammetry and controlled potential electrolysis in dimethylformamide (DMF) using
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8c66f932d1545ac3cd2c57181c082760
https://doi.org/10.1016/s0022-0728(01)00386-2
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3
Electrochemistry of 9,9′ spirobifluorene derivatives: electrosynthesis of stereoisomeric 2,3-bis(2′-acetyl-9,9′-spirobifluoren-2-yl)butane-2, 3-diols and of 1-(2′-acetyl-9,9′-spirobifluoren-2-yl)ethanol and redox properties of polyacetylated spirobifluorenes
Autor: Liliana Rampazzo, Leonardo Mattiello
Publikováno v: Electrochimica Acta. 42:2257-2264
2,2′-diacetyl-9,9′-spirobifluorene 3a, an axially dissymmetric compound, when dissolved in virtually aprotic solvent DMF, is characterised by several reduction peaks in the voltammetric experiments, using a glassy carbon electrode; the first two
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c4b18280412dcb40d6d13e52ae7cbcc5
https://doi.org/10.1016/s0013-4686(97)85507-7
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4
Electrochemistry of 9,9′-spirobifluorene derivatives: 2-acetyl- and 2,2′-diacetyl-9,9′-spirobifluorene. Preparation of stereoisomeric 2,3-bis(9,9′-spirobifluoren-2-yl)butane-2,3-diols
Autor: Leonardo Mattiello, Liliana Rampazzo
Publikováno v: Scopus-Elsevier
2-Acetyl- and 2,2′-diacetyl-9,9′spirobifluorene 1 and 2 were studied by cyclic voltammetry in dimethylformamide. The corresponding anion radicals show remarkable persistency in aprotic DMF. The (apparent) standard potentials are E°=–1.77 V (SC
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ae439da25c606c8d3dd8fa014403908e
https://doi.org/10.1039/p29930002243
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6
ChemInform Abstract: Electrochemistry of 9,9′-Spirobifluorene Derivatives: 2-Acetyl- and 2,2′-Diacetyl-9,9′-spirobifluorene. Preparation of Stereoisomeric 2,3- bis(9,9′-Spirobifluoren-2-yl)butane-2,3-diols
Autor: Leonardo Mattiello, Liliana Rampazzo
Publikováno v: ChemInform. 25
2-Acetyl- and 2,2′-diacetyl-9,9′spirobifluorene 1 and 2 were studied by cyclic voltammetry in dimethylformamide. The corresponding anion radicals show remarkable persistency in aprotic DMF. The (apparent) standard potentials are E°=–1.77 V (SC
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::7a2e300d1bc2d6372158c237dd4fd339
https://doi.org/10.1002/chin.199406044
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7
The multi-step reversible reduction of 1,4,5,8-naphthalene tetracarboxylic acid dianhydride
Autor: Carlo de Luca, Liliana Rampazzo, Claudio Giomini
Publikováno v: Journal of Electroanalytical Chemistry and Interfacial Electrochemistry. 280:145-157
Voltammetric experiments on 1,4,5,8-naphthalene tetracarboxylic acid dianhydride ( I ) (A) at a glassy carbon electrode (GC) in dry dimethylformamide +0.1 M Et 4 NClO 4 are presented. The one-electron reduction of A produces anion radical A − : A+e
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::d31c324ecce87a2896eea78052f7237a
https://doi.org/10.1016/0022-0728(90)87090-7
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8
Comparative studies of the reduction of 2-naphthaldehyde, 9,9'-spirobi-(9H-fluorene)-2-carboxaldehyde and 2-fluorenecarboxaldehyde in nonaqueous solvents
Autor: Charles C. Van Kirk, Norma A. Macías-Ruvalcaba, Leonardo Mattiello, Liliana Rampazzo, Giulia Fioravanti, Dennis H. Evans
The reductions of 2-naphthaldehyde, ( 3 ), 9,9′-spirobi-(9 H -fluorene)-2-carboxaldehyde, ( 2 ), and 2-fluorenecarboxaldehyde, ( 4 ), have been studied in N , N -dimethylformamide (DMF) and acetonitrile. Putative spiroconjugation was the source of
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ab0b249d3589f90a495ee34f06d9a2e9
http://hdl.handle.net/11697/12518
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9
Electrochemistry of Diphenylcyclopropenone in aprotic solvents: electrochemical synthesis of oligomers and electrochemically driven decarbonylation reaction
Autor: Liliana Rampazzo, Leonardo Mattiello
Publikováno v: Novel Trends in Electroorganic Synthesis ISBN: 9784431659266
We have shown that electrochemistry of Diphenylcyclopropenone (1) in aprotic solvents presents some interesting and peculiar aspects.1 For instance, (a) the voltammetric curves clearly show that the irreversible reduction of (1) in DMF at a G.C. elec
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::990c2539ff16b3c3a05db327fd30b4c5
http://hdl.handle.net/11573/136369
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10
Electrochemistry of some Ethyl alpha-bromo dihalophenyl acetates and electrochemical synthesis of diastereomeric Diethyl 2,3-bisdihalogeno-phenyl succinates
Autor: Leonardo Mattiello, Liliana Rampazzo, Carlo de Luca
Ethyl α-bromo-2,4- or -3,4-dihalogenophenylacetates (ABr), where halogen = F or Cl, are prepared and electrolysed on reticulated vitreous carbon (RVC) in dimethylformamide containing Et4NClO4(0.1 mol dm–3). Potentiostatic reduction at E=–1.6 to
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c5f5bb107935e62259e4f55b81c0616a
http://hdl.handle.net/11573/69419
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