Výsledky vyhledávání - "Gaetano Zecchi"

Tunable Pd-Catalyzed Cyclization of Indole-2-carboxylic Acid Allenamides: Carboamination vs Microwave-Assisted Hydroamination

Autor: Egle M. Beccalli, Gianluigi Broggini, Gaetano Zecchi, Alice Bernasconi, Elena Borsini, Micol Rigamonti

Publikováno v: The Journal of Organic Chemistry. 75:6923-6932

A variety of 3-vinyl-substituted imidazo[1,5-a]indole derivatives were synthesized by intramolecular Pd-catalyzed cyclization of the title allenamides through either a domino carbopalladation/exo-cyclization process or a novel hydroamination reaction

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::78bfc229f4fd4108320b58150740a9a0
https://doi.org/10.1021/jo101501u

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Synthesis and properties of some new N,N′-disubstituted 2,5-dihydro-1,4-dioxo-3,6-diphenylpyrrolo[3,4-c]pyrroles

Autor: Federico Rusconi, Gianmaria Colonna, Tullio Pilati, Gaetano Zecchi

Publikováno v: Dyes and Pigments. 75:125-129

A variety of substituents have been introduced on the nitrogen atoms of the parent 2,5-dihydro-1,4-dioxo-3,6-diphenylpyrrolo[3,4-c]pyrrole upon treatment with alkylating agents in a basic medium. Crystal structure as well as absorption and fluorescen

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::8f49ff057327a454df5f488f36a6db55
https://doi.org/10.1016/j.dyepig.2006.05.024

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Unbridged Zirconium and Titanium Metallocenes with Seven- or Eight-Saturated Fused-Ring Ligands: a Route for the Synthesis of Stereoblock Polypropene

Autor: Fabio Bertini, Simona Losio, Maria Carmela Sacchi, Valerio Bertolasi, Gaetano Zecchi, Eleonora Polo

Publikováno v: Macromolecules
38 (2005): 7231.
info:cnr-pdr/source/autori:Losio S., Zecchi G., Bertini F., Sacchi M.C., Bertolasi V., Polo E./titolo:Unbridged zirconium and titanium metallocenes with seven-or eight-saturated fused-ring ligands: a route for the synthesis of stereoblock polypropene/doi:/rivista:Macromolecules (Print)/anno:2005/pagina_da:7231/pagina_a:/intervallo_pagine:7231/volume:38
38 (2005): 7231–7240. doi:10.1021/ma050599t
info:cnr-pdr/source/autori:Losio, S; Zecchi, G; Bertini, F; Sacchi, MC; Bertolasi, V ; Polo, E/titolo:Unbridged zirconium and titanium metallocenes with seven-or eight-saturated fused-ring ligands: a route for the synthesis of stereoblock polypropene/doi:10.1021%2Fma050599t/rivista:Macromolecules (Print)/anno:2005/pagina_da:7231/pagina_a:7240/intervallo_pagine:7231–7240/volume:38

Unbridged zirconocene catalysts, where a seven- or eight-membered ring fused to a cyclopentadiene is associated with a phenyl substituent in position 2(C7Ph-Zr and C8Ph-Zr), were tested, under the same polymerization conditions, to produce polypropen

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::51598c5f6c25c7fb329004786a15c9aa
https://doi.org/10.1021/ma050599t

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Intramolecular cycloadditions of nitrones derived from optically active 1-alkenyl-2-imidazolecarbaldehydes: regio- and diastereoselectivity

Autor: Alessandro Contini, Gaetano Zecchi, Egle M. Beccalli, Ivan De Marchi, Caterina Zoni, Gianluigi Broggini

Publikováno v: Tetrahedron: Asymmetry. 15:3181-3187

Enantiopure polyfunctionalized imidazo[1,2- a ]pyridines and pyrrolo[1,2- a ]imidazoles, two classes of heterocyclic compounds including anti-inflammatories and glycosidase inhibitors, were synthesized starting from natural α-aminoacids and exploiti

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5ff2bf6e2a0f92b2748417e03dd8579e
https://doi.org/10.1016/j.tetasy.2004.07.065

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Regiochemical aspects of intramolecular cycloadditions of nitrones derived from N-(2-alkenyl)-2-pyrrolecarbaldehydes. Competitive entries to pyrrolizidine and indolizidine derivatives

Autor: Gaetano Zecchi, Alberto Terraneo, Gianluigi Broggini, Concetta La Rosa, Tullio Pilati

Publikováno v: Tetrahedron. 57:8323-8332

Intramolecular cycloadditions of unsaturated nitrones derived from a series of N-(2-alkenyl)-2-pyrrolecarbaldehydes (2) have been systematically studied. A pronounced substituent effect has been observed as far as the competitive formation of fused-

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::229191429a3e1f9610f5ac842720181b
https://doi.org/10.1016/s0040-4020(01)00785-2

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Access to Pyrrolo- and Pyrido[1,2-a]indole Derivatives by Intramolecular Nitrone Cycloadditions. Effect of Steric Factors on the Regioselective Product Formation

Autor: Tullio Pilati, Daniele Passarella, Gaetano Zecchi, Concetta La Rosa, Gianluigi Broggini, Egle M. Beccalli, Alberto Terraneo

Publikováno v: The Journal of Organic Chemistry. 65:8924-8932

On starting from N-allyl-substituted 2-indolecarbaldehydes and exploiting the intramolecular nitrone cycloaddition methodology, we synthesized a number of the title fused-ring indole derivatives in racemic as well as enantiopure form.

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::50251747031e40da3e360fb4681e60c5
https://doi.org/10.1021/jo000842g

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Entry to nitrogen-containing heterocycles by based-promoted heterocyclization on allenylamides of l-α-aminoacids

Autor: Silvia Sottocornola, Simona Galli, Micol Rigamonti, Gaetano Zecchi, Gianluigi Broggini

Publikováno v: Tetrahedron Letters. 50:1447-1449

Allenylamides of Boc-protected α-aminoacids easily gave in basic medium heterocyclic products arising from attack of the NH group on the inside C–C double bond of the 1,2-diene moiety, namely imidazolidinones, pyrazinones, and a pyrrole compound.

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7a897fd456ba304bbed963a6f2901a11
https://doi.org/10.1016/j.tetlet.2009.01.074

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