Zobrazeno 1 - 10
of 85
pro vyhledávání: '"Paola Del Buttero"'
Tricarbonyl(h6-Arene)Chromium(0) Complexes as Chiral Auxiliaries: Asymmetric Synthesis of b-Lactones
Autor:
Deborah Montrasio, Paola Del Buttero
Publikováno v:
Molecules, Vol 6, Iss 1, Pp 13-20 (2001)
The optically pure tricarbonyl(h6-2-substituted benzaldehydes)chromium are used as chiral auxiliaries in the condensation with a series of doubly lithiated carboxylic acids. The intramolecular ring closure of the obtained Cr(CO)3 complexed b-hydroxya
Externí odkaz:
https://doaj.org/article/22f1e9892ed242f382b7fc7aa2695227
Autor:
Paola Del Buttero, Giorgio Molteni
Publikováno v:
Tetrahedron. 67:7343-7347
A systematic study on the behaviour of stable 2,4,6-trimethyl-3,5-dichlorobenzonitrile oxide versus a number of mono-, bi- and trisubstituted dipolarophiles in water was pursued obtaining simple as well as annulated isoxazolines. Reaction conditions
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8d3ef3258f4706f4a145251fe4a4285a
https://doi.org/10.1016/j.tet.2011.07.037
https://doi.org/10.1016/j.tet.2011.07.037
Publikováno v:
Tetrahedron: Asymmetry. 21:2603-2606
A five-step synthesis of novel tricyclic β-lactams has been exploited by stereoselective intramolecular cycloadditions of appropriate nitrilimines 6 and 12. These labile intermediates were generated in situ from the corresponding hydrazonoyl chlorid
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::308494fdb2f704830c7d0032d79c1b9a
https://doi.org/10.1016/j.tetasy.2010.10.017
https://doi.org/10.1016/j.tetasy.2010.10.017
Publikováno v:
Tetrahedron: Asymmetry. 21:2607-2611
Starting from the Staudinger [2+2] cycloaddition between the 1-azadiene 1 and acetoxyacetylketene, generated in situ from acetoxyacetyl chloride, we developed a seven-step synthesis of the novel azeto[3′,4′:2,3]pyrano[4,5-c]pyrazole skeleton 9 in
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::391a36f442a08af24febbac04ce2bcca
https://doi.org/10.1016/j.tetasy.2010.10.018
https://doi.org/10.1016/j.tetasy.2010.10.018
Autor:
Marcello Campione, Luciano Miozzo, Antonio Papagni, Paolo Campiglio, Paola Del Buttero, Antonio Mani, Enrico Tonelli
Publikováno v:
Journal of Fluorine Chemistry. 129:294-300
Here we describe the synthesis of polyfluoro-acridines functionalised with perfluoro-alkyl and perfluoro-alkoxy chains, obtained by Ullmann coupling reaction or aromatic nucleophilic substitution. Surface wettability of PMMA is changed by doping with
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::054bab7de5cac00459336fa3d657d0bd
https://doi.org/10.1016/j.jfluchem.2008.01.005
https://doi.org/10.1016/j.jfluchem.2008.01.005
Autor:
Elvira Caporizzo, Nadia Amboldi, Barbara Giglioni, Luciano Miozzo, Paola Del Buttero, Maria Donata Grilli, Antonio Papagni, Anna Villa, Silvia Maria Doglia, Ferruccio Fazio
Publikováno v:
European Journal of Cancer. 41:1453-1459
In this study, we have shown the intracellular distribution of choline and phosphatidylcholine fluorescent derivatives in human breast carcinoma cells using confocal microscopy. The fluorescent choline derivatives ethanamimium 2-hydroxy-NN-dimethyl-N
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2477c3c26b47f8a21d8ca99d87494c4c
https://doi.org/10.1016/j.ejca.2005.02.028
https://doi.org/10.1016/j.ejca.2005.02.028
Autor:
Giorgio Molteni, Paola Del Buttero
Publikováno v:
Tetrahedron: Asymmetry. 16:1983-1987
Starting form naturally occurring ( S )- cis -verbenol 1 and (1 R )-(−)-myrtenol 2 , we synthesised enantiopure bicyclo[3.1.1]heptano[4,3- c ]pyrazole derivatives 7 and 8 via a stereoselective nitrilimine cycloaddition as the key step. The effectiv
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f8e42c0137133007a1cd924f0dd793f2
https://doi.org/10.1016/j.tetasy.2005.04.014
https://doi.org/10.1016/j.tetasy.2005.04.014
Autor:
Paola Del Buttero, Giorgio Molteni
Publikováno v:
Tetrahedron. 61:4983-4987
1,3-Dipolar cycloadditions of MeOPEG-supported azide 2 with a variety of dipolarophiles have been studied. 1-MeOPEG-supported 1,2,3-triazoles 4 and 5, 1,2,3,4-tetrazoles 12 and aziridine 14 were obtained in nearly quantitative yields. The removal of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e7b84004a893c0f8b857b6903503f500
https://doi.org/10.1016/j.tet.2005.03.049
https://doi.org/10.1016/j.tet.2005.03.049
Publikováno v:
Tetrahedron. 61:2413-2419
Silver acetate-promoted nitrilimines cycloaddition onto 3(R*)-phenyl-4(R*)-cinnamoyl-2-azetidinone 1 were highly stereoselective giving 4-(4,5-dihydropyrazol-5-yl) carbonyl-2-azetidinones 5 as the major products and regioisomeric 4-(4,5-dihydropyrazo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e847649af9c6deb33408388c01f2da23
https://doi.org/10.1016/j.tet.2005.01.016
https://doi.org/10.1016/j.tet.2005.01.016
Publikováno v:
Tetrahedron: Asymmetry. 14:3949-3953
The stereoselective [2+2] cycloaddition reaction between the chiral tricarbonyl(eta(6)arene) chromium(0) complexed imines 1 and 6 and phthalimidoketene affords tricarbonyl (eta(6)arene)chromium(0) complexed 3-phthalimido-2-azetidinones 3, 7 and 8, bo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b1649c2af1a6642da7fa8d7b652f3d2f
https://doi.org/10.1016/j.tetasy.2003.09.046
https://doi.org/10.1016/j.tetasy.2003.09.046