Zobrazeno 1 - 10
of 159
pro vyhledávání: '"Franco Ghelfi"'
Autor:
Niccolò Braidi, Francesca Parenti, Giulia Scurani, Francesco Tassinari, Mirko Buffagni, Luisa Bonifaci, Gianfranco Cavalca, Nicolò Pettenuzzo, Franco Ghelfi
The dual role of nitrogen bases is shown in the ARGET ATRP with ascorbic acid acetonide. High pKa bases lead to more ascorbate anion (faster polymerizations) but in presence of oxygen/water are detrimental to the catalyst (hydroxide formation).
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0763dafb394f38cfcecf6af33db1bb01
https://hdl.handle.net/11380/1302105
https://hdl.handle.net/11380/1302105
Autor:
Francesca Parenti, Niccolò Braidi, Angelo Ferrando, Gianfranco Cavalca, Elena Bedogni, Chiara Gualandi, Mirko Buffagni, Valentina Buzzoni, Franco Ghelfi, Ida Morandini, Nicolò Pettenuzzo, Maria Letizia Focarete, Luisa Bonifaci, Aldo Longo
An anomalous polystyrene gel was obtained during the copper-catalyzed “activators regenerated by electron transfer” “atom transfer radical polymerization” (ARGET ATRP) of styrene at 60–70 °C, using ascorbic acid/Na2CO3 as the reducing syst
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fec2c0afbf4f57bf10c0972fbde03b4c
https://hdl.handle.net/11380/1244255
https://hdl.handle.net/11380/1244255
Autor:
Ida Morandini, Abdirisak Ahmed Isse, Francesca Parenti, Luisa Bonifaci, Gianfranco Cavalca, Angelo Ferrando, Aldo Longo, Elena Bedogni, Mirko Buffagni, Franco Ghelfi, Armando Gennaro, Niccolò Braidi
“Activator regenerated by electron transfer” “atom transfer radical polymerization” (ARGET ATRP) process catalyzed by CuCl2/tris(2-pyridylmethyl)amine (TPMA) (1/1) in ethyl acetate/ethanol (EtOAc/EtOH) for the polymerization of styrene from e
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4e979d34f1ae983f0334aa6a12e0a772
https://hdl.handle.net/11380/1227174
https://hdl.handle.net/11380/1227174
Autor:
Elena Bedogni, Aldo Longo, Alberto Menabue, Armando Gennaro, Francesca Parenti, Manuel Imperato, Abdirisak Ahmed Isse, Franco Ghelfi, Mirko Buffagni, Angelo Ferrando, Ida Morandini, Luisa Bonifaci, Niccolò Braidi, Gianfranco Cavalca
A new copper(II) chloride/tris(2-piridylmethyl)amine (1/1) catalysed “Activators Regenerated by Electron Transfer” “Atom Transfer Radical Polymerisation” (ARGET ATRP) process for the polymerisation of styrene is described. The salient feature
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b54bdd25a0cd3e9eeca29e7a2a87a0e3
https://hdl.handle.net/11380/1198188
https://hdl.handle.net/11380/1198188
Autor:
Ida Morandini, Abdirisak Ahmed Isse, Marco Borsari, Mirko Buffagni, Franco Ghelfi, Francesca Parenti, Nicola Porcelli, Gianfranco Cavalca, Nicolò Pettenuzzo, Aldo Longo, Niccolò Braidi, Luisa Bonifaci, Gaia Serafini
Publikováno v:
European Polymer Journal. 157:110675
Atom transfer radical polymerization (ATRP) is one of the most powerful techniques to synthesize precisely tailored polymers and macrostructures. Activators regenerated by electron transfer (ARGET) ATRP was developed as a “green” strategy to decr
Autor:
Natalie C. James, Collette S. Guy, Hanmo Zhang, Jessica M. Phillips, Paul Wilson, Andrew J. Clark, Benjamin Hay, David J. Fox, Philip B. Sellars, Franco Ghelfi, Dennis P. Curran, Fabrizio Roncaglia
Publikováno v:
The Journal of Organic Chemistry. 81:5547-5565
The barrier to rotation around the N-alkenyl bond of 38 N-alkenyl-N-alkylacetamide derivatives was measured (ΔG⧧ rotation varied between 20 kcal mol–1) were studied to determine the regiochemistry of cyclization. Those with high barriers (>27 kc
Autor:
Antonio Palumbo Piccionello, Vincenzo Frenna, Franco Ghelfi, Barbara Cosimelli, Domenico Spinelli
Publikováno v:
European Journal of Organic Chemistry. 2014:7006-7014
The kinetics of the ring-into-ring conversion of some new (Z)-phenylhydrazones of 3-benzoyl-1,2,4-oxadiazole containing different nitrogen-substituents at C-5 (3b–d; X = NHMe, NMe2, and NHCOMe) into the relevant triazoles 4b–d have been examined
Autor:
Maria Cristina Menziani, Andrea Cornia, Armando Gennaro, Abdirisak Ahmed Isse, Domenico Spinelli, Franco Ghelfi, Fabrizio Roncaglia, Francesco Muniz-Miranda, Andrew J. Clark, Fulvia Felluga
Publikováno v:
European Journal of Organic Chemistry. 2014:6734-6745
The N-arylsulfonyl group, which is the best and most useful cyclization auxiliary for the transition-metal-catalyzed atom transfer radical cyclization (ATRC) of N-allyl-α-polychloroamides, can be effectively removed from the target γ-lactams by usi
Autor:
Gianluca Giorgi, Giovanni Petrillo, Marco Stenta, Cinzia Tavani, Franco Ghelfi, Domenico Spinelli, Lara Bianchi, Massimo Maccagno
Publikováno v:
European Journal of Organic Chemistry. 2013:6298-6309
The unusual migration of a nitro group from the - to the -position of a -aryl--nitroethenyl moiety, following a nitrocyclopropane to isoxazoline N-oxide isomerization, has been studied from a mechanistic and synthetic points of view. As a result, two
Autor:
Franco Ghelfi, Abdirisak Ahmed Isse, Fabrizio Roncaglia, Andrew J. Clark, Fulvia Felluga, Armando Gennaro, Franco Bellesia
Publikováno v:
Advanced Synthesis & Catalysis. 355:1649-1660
The cyclisation of N-allyl-N-substituteda- polychloroamides is efficiently obtained through a copper-catalysed activators regenerated by electron transfer–atom transfer radical cyclisation process, with a metal load of only 0.5 mol%. The redox cata