Výsledky vyhledávání - "Ana M. Martin Castro"

Synthesis of Enantiopure 1,5-Enynes and 1,5-Diynes with Propargylic Quaternary Centers

Autor: Francisco Yuste, Jose Luis Garcia Ruano, José Alemán, Rubén A. Toscano, Rubén Sánchez-Obregón, Ana M. Martin Castro, Inés Alonso, Ignacio Pérez, Leyre Marzo

Publikováno v: European Journal of Organic Chemistry. 2015:3314-3319

Diastereoselective quaternization of ortho-sulfinylbenzyl-methylpropargylic carbanions has been carried out with various allylic, propargylic, and benzylic halides. The stereoselectivity is efficiently controlled by the sulfinyl group, acting as a re

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::d06f93c4c8679c5b3b59bfbd7d6684fc
https://doi.org/10.1002/ejoc.201500004

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Diastereodivergent Synthesis of Benzylic Quaternary Centers Mediated by a Remote Sulfinyl Group: Spectroscopic Evidence of the Structure of the Carbanionic Intermediates

Autor: José L. García Ruano, Esther Torrente, Ana Poveda, Ana M. Martin Castro

Publikováno v: Phosphorus, Sulfur, and Silicon and the Related Elements. 186:1119-1129

Enantiomerically enriched α,α-disubstituted phenyl acetonitriles were prepared from 2-alkyl-2-[2-(p-tolylsulfinyl)phenyl]acetonitriles by reaction with alkylating and acylating reagents under basic conditions. NMR spectroscopic studies corroborated

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::d854be0493af678a04c471001814347e
https://doi.org/10.1080/10426507.2010.532843

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Influence of an ortho-sulfinyl group on the configurational stability of α-lithiated aryloxiranes: deuteration of tolylsulfinyl styrene oxides

Autor: Saverio Florio, José L. García Ruano, Maria Giovanna Tocco, Esther Torrente, Antonio Salomone, Renzo Luisi, Ana M. Martin Castro, Vito Capriati

Publikováno v: Tetrahedron. 65:383-388

The influence of the p-tolylsulfinyl group, located at ortho-, meta-, and para-position, on the regio- and stereoselectivity of the deuteration reactions of substituted styrene oxides has been investigated. The sulfinyl group at an ortho-position red

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b4edfe1707b7e04b0d810dbb97f55881
https://doi.org/10.1016/j.tet.2008.10.021

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Stereocontrolled reactions mediated by remote sulfoxides: Formation and reactivity of enantiomerically pure benzylic centers

Autor: Ana M. Martin Castro, Garcia Ruano Jose Luis Garcia Ruano Jose Luis

Publikováno v: Heteroatom Chemistry. 18:537-548

Reactions of different electrophiles (alkyl halides, aldehydes, N-sulfinylimines, imines, etc) with (S)-2-p-toluenesulfinyl toluene and their alkyl, triisopropylsilyloxy, and methylthio derivatives at benzylic position, in the presence of LDA, allow

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::11eca047bbd075235b9a5bd60b668dc7
https://doi.org/10.1002/hc.20342

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Reactions of enantiopure ß-ketimino sulfoxides with Et2AlCN. Scope and limitations in asymmetric synthesis of α-amino nitriles

Autor: Marta Cifuentes García, José L. García Ruano, Angel L. Navarro, Francisco Tato, Ana M. Martin Castro

Publikováno v: ARKIVOC, Vol 2005, Iss 6, Pp 33-45 (2005)

Results obtained in the reactions of Et2AlCN with exocyclic, endocyclic, and acyclic α-p- tolylsulfinyl ketimines are reported. Good conversions and satisfactory stereochemical results are obtained exclusively from cyclic ketimines. Imine-enamine eq

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f6c668f58bd8559b540a2f74441d0841
https://doi.org/10.3998/ark.5550190.0006.605

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Asymmetric 1,3-dipolar reactions of 3-sulfinylfuran-2(5 H )-ones with 11 H -dibenzo[ b,e ]azepine 5-oxide. Synthesis of pyrroloazepines via isoxazoloazepines

Autor: M. Rosario Martín, Alberto Fraile, Ana M. Martin Castro, J. Ignacio Andrés Gil, José L. García Ruano

Publikováno v: Tetrahedron Letters. 45:4653-4656

The addition of morphanthridine N-oxide ( 1 ) to homochiral 3-p-tolylsulfinylfuran-2(5H)-ones ( 2a and 2b ) under mild conditions affords furoisoxazoloazepines ( 3a and 3b ) in high yields and with complete regioselectivity. The π-facial and endo-se

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::239b79179d0baf8c649014f67840eeb7
https://doi.org/10.1016/j.tetlet.2004.04.108

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Stereoselective synthesis of 5-(41-azetidinyl)-proline esters via 1,3-dipolar cycloaddition reaction of N-metalated azomethine ylides

Autor: G. Subramaniyan, R. Raghunathan, Ana M. Martin Castro

Publikováno v: Tetrahedron. 59:335-340

The conformationally locked s-trans enone functionality present in the (E)-3-arylidene-4-chromanones undergo regioselective 1,3-dipolar cycloaddition reaction with N-metalated azomethine ylides derived from β-lactam imines of glycine methyl ester in

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::a3c1b03ede41ab6b81914ad28ada742d
https://doi.org/10.1016/s0040-4020(02)01521-1

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