Zobrazeno 1 - 10 of 41 pro vyhledávání: '"Bruno M. Vittimberga"'
1
Synthesis of an o-Nitrobenzyl Attached A1 Adenosine Receptor Antagonist, a Prodrug Approach
Autor: Ensinger Carol L, Hexi Chang, Robert D. McCargar, Bruno M. Vittimberga
Publikováno v: Synthetic Communications. 33:2605-2611
The o-nitrobenzyl group, possessing distinct advantage of being photolabile under mild conditions, was successfully connected to 8-(5,6-epoxynorbornan-2-yl)-1,3-dipropylxanthine (5), a high specific A1 adenosine receptor antagonist. The resulting com
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::92c86a70582d83dcf85ea6627385939b
https://doi.org/10.1081/scc-120021980
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2
The photochemistry of 6-phenanthridinecarbonitrile II. The physical and photophysical properties
Autor: Bruno M. Vittimberga, Donald F. Sears
Publikováno v: Journal of Heterocyclic Chemistry. 38:285-291
The physical and photophysical properties of 6-phenanthridinecarbonitrile (1) have been examined. We previously reported that when 1 is irradiated in aqueous 2-propanol, three products are formed [3]. These include dimethyl-6-phenanthridinylcarbinol
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::a9b0648b9bd66c51df025185ed5f5e9c
https://doi.org/10.1002/jhet.5570380143
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3
The photochemistry of 6-phenanthridinecarbonitrile I. Product analysis
Autor: Donald F. Sears, Bruno M. Vittimberga
Publikováno v: Journal of Heterocyclic Chemistry. 37:291-295
When 6-phenanthridinecarbonitrile (3) is irradiated at 2537 A in neutral 9:1 2-propanol/water, three major products are formed. These are dimethyl-(6-phenanthridinyl)methanol (4), phenanthridine (5) and 6,6′-biphenanthridine (6). When benzophenone
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::5f7d9ede42672db712eefe887ef571ff
https://doi.org/10.1002/jhet.5570370212
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4
Formation of a σ-complex from dicyanopyridinyl and hydroxyalkyl radicals. An ESR study of the photoinitiated complex forming reactions of aryl ketones with 2,4-pyridinedicarbonitrile and alcohols
Autor: Bruno M. Vittimberga, Anne L. Rieger
Publikováno v: Journal of Heterocyclic Chemistry. 37:131-136
When a 1° or 2° alcohol solution of benzophenone and 2,4-pyridinedicarbonitrile (1) is irradiated, the 2,4-dicyanopyridinyl radical (2) is formed immediately. When the irradiation is performed in the cavity of an ESR spectrometer, the spectrum ampl
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::f1806ee1ccff7bd863e2e7aec8219801
https://doi.org/10.1002/jhet.5570370122
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5
Photochemistry of dicyanopyridines
Autor: Tullio Caronna, Bruno M. Vittimberga, Matthew E. Kornn, W. Grant McGimpsey
Publikováno v: Journal of Photochemistry and Photobiology A: Chemistry. 90:137-140
The photochemistry of a variety of dicyanopyridines (2,3-, 2,4-, 2,5-, 2,6-, 3,4- and 3,5-dicyanopyridine) in solution at room temperature was investigated. Pulsed UV (308 nm) laser irradiation in deoxygenated acetonitrile yields the triplet state wi
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::285151c0acd42f95dba560725743d468
https://doi.org/10.1016/1010-6030(95)04089-x
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6
A study of the photochemically induced electron-transfer reactions between pyridinedicarbonitriles and primary and secondary aliphatic amines
Autor: Bruno M. Vittimberga, Rosanna Bernardi, Gabriella Poggi, Tullio Caronna
Publikováno v: Journal of Heterocyclic Chemistry. 31:903-908
A study on the photochemically induced electron-transfer from primary and secondary aliphatic amines as donors to pyridinedicarbonitriles as the acceptor is reported. A comparison between the substitution posi- tions and the spin density distribution
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::10a9b389222785b5775307371e2c4086
https://doi.org/10.1002/jhet.5570310436
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7
ChemInform Abstract: The Electron Transfer Reactions of Cyano Substituted Pyridines and Quinolines with Thermally Generated Diphenyl Ketyl
Autor: Bruno M. Vittimberga, Patricia Mcdevitt
Publikováno v: ChemInform. 22
Electron transfer reactions of cyano substituted pyridines and quinolines with thermally generated diphenyl ketyl are reported. When E1/2(-) for the heterocycle is less negative than -2V, electron transfer occurs from the ketyl to the heterocyclic ba
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::e09a33b1fb44d46eedb2f15f24def592
https://doi.org/10.1002/chin.199118163
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10
Correlation of 2-, 3-, 4- and disubstituted pyridine gas-phase proton affinities with ab initio calculated energies at the sto-3g basis set level
Autor: Bruno M. Vittimberga, Tullio Caronna
Publikováno v: Journal of Heterocyclic Chemistry. 29:787-790
Total energies of 2-, 3-, 4- and disubstituted pyridines were calculated for the salt and the free base using ab initio molecular orbital calculations at the STO-3G basis set level [2]. In each set, the difference in energy, ΔEH, between the salt an
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::6c19f40e61fd862c94d83e1578d1eec7
https://doi.org/10.1002/jhet.5570290418
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