Výsledky vyhledávání - "Germana Mazzanti"

Synthesis and reactivity of achiral and of a novel planar chiral thioferrocenoylsilanes

Autor: Mauro Comes-Franchini, Massimiliano Tomasulo, Greta Varchi, Germana Mazzanti, Bianca F. Bonini, Alfredo Ricci, Mariafrancesca Fochi

Publikováno v: Journal of Organometallic Chemistry. :407-417

The reactions of thioferrocenoylsilanes with organolithium reagents, dienes and reducing agents which afford α-silyl sulphides, dihydrothiopyranes and α-silyl ferrocenyl thiols, respectively, have been investigated. α-Silyl sulphides were further

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::ee96c520d865a8e2c521e402a84fb15e
https://doi.org/10.1016/s0022-328x(01)00944-5

Zobrazit plný text záznamu

Conformational Studies by Dynamic NMR. 79.1 Dimesityl Sulfine Revisited: Detection of the Helical Antipodes and Determination of Their Enantiomerization Pathways

Autor: Germana Mazzanti, Lodovico Lunazzi, Stefano Grilli, and Andrea Mazzanti

Publikováno v: The Journal of Organic Chemistry. 66:748-754

By means of low-temperature NMR spectra, it is demonstrated that dimesityl sulfine (Mes2CSO) adopts in solution the same chiral propeller conformation (C1 symmetry) determined by X-ray diffraction in the crystalline state. With the help of MM calcula

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::59323950e61e6515576bb7ce9288c04b
https://doi.org/10.1021/jo001408h

Zobrazit plný text záznamu

Extremely facile formation and high reactivity of new thioacylsilanes containing the ferrocene moiety

Autor: Bianca F. Bonini, Mauro Comes-Franchini, Alfredo Ricci, Germana Mazzanti, Mariafrancesca Fochi, Greta Varchi

Publikováno v: Tetrahedron Letters. 40:6473-6476

Thioacylsilanes containing the ferrocene moiety, easily prepared from the corresponding acylsilanes with Lawesson's reagent at room temperature, can be transformed into vinyl silanes, sulfur heterocycles and sulfines.

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::a521c6f848d720f2e78480169ecb46e8
https://doi.org/10.1016/s0040-4039(99)01218-6

Zobrazit plný text záznamu

Allylation reactions of acylsilanes as synthetic equivalents of aldehydes. Application to a stereocontrolled synthesis of (1S,2S,5S)-(10S)-and-(10R)-allyl myrtanol

Autor: Alfredo Ricci, Bianca F. Bonini, Mauro Comes-Franchini, Germana Mazzanti, Cristiano Nanni, Mariafrancesca Fochi

Publikováno v: Tetrahedron Letters. 39:6737-6740

The allylation of acylsilanes with tetraallyltin in the presence of catalytic amounts of Sc(OTf) 3 proceeded smoothly to afford the silylated homoallylic alcohols in good yields. Subsequent protiodesilylation gave the formal adducts of the correspond

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::047e431f98729785491a3f4fa7fdb224
https://doi.org/10.1016/s0040-4039(98)01413-0

Zobrazit plný text záznamu

Chemistry of thioacylsilanes part 11. Cyclic and open chain α-silyl vinyl sulfides as precursors of thioannulated cyclopentenones and thiofunctionalized enones

Autor: Germana Mazzanti, Mariafrancesca Fochi, Bianca F. Bonini, Alfredo Ricci, Mauro Comes Franchini

Publikováno v: Tetrahedron. 53:7897-7910

Cyclic and open chain α-silyl vinyl sulfides, obtained from thioacylsilanes, react with acid chlorides in the presence of Lewis acid to give thioannulated cyclopentenones and thiofunctionalized enones. The effect of the substituents at silicon on th

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::78101a9880c9e733ac8e636f605016df
https://doi.org/10.1016/s0040-4020(97)00462-6

Zobrazit plný text záznamu

Desilylation of (Z )-α-dimethylphenylsilyl vinyl sulfides with fluoride ion: 1 revised mechanism for phenyl group migration in substrates containing an electron-withdrawing group β to the sulfur

Autor: Mauro Comes Franchini, Bianca F. Bonini, Germana Mazzanti, Mariafrancesca Fochi, Alfredo Ricci

Publikováno v: Journal of the Chemical Society, Perkin Transactions 1. :3211-3218

A detailed investigation of the desilylation of (Z)-α-dimethylphenylsilyl vinyl sulfides with fluoride ion has shown that in substrates containing an electron-withdrawing group β to the sulfur, phenyl group migration occurs as a result of a fluorid

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::5e846e4ba1493f7478864620e2b4fe8f
https://doi.org/10.1039/a703662k

Zobrazit plný text záznamu

Chemistry of silyl thioketones part 9. A new selective synthesis of 1-silyl-1-enethiols and of 2-silyl-thiacycloalk-2-enes of common to large ring size

Autor: Germana Mazzanti, Bianca F. Bonini, Mariafrancesca Fochi, Mauro Comes-Franchini, Alfredo Ricci

Publikováno v: Tetrahedron. 52:4803-4816

ω-Haloacylsilanes 1 were selectively transformed via thioacylsilanes into Z-silyl-enethiols 4 with solid sodium hydrogen carbonate or into 2-silylthiacycloalk-2-enes 5 of common to large ring size with solid sodium hydroxide. Compounds 5 underwent p

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::a739c11f15378d66d78a7064362e1747
https://doi.org/10.1016/0040-4020(96)00148-2

Zobrazit plný text záznamu

Vyhledávací nástroje:

Upřesnit hledání