Search Results - "Maestro, MC"

Remote stereocontrol by sulfinyl groups: hydrocyanation of δ-ketosulfoxides by García Ruano, José L., Fernández-Ibáñez, M. Ángeles, Maestro, M. Carmen, Rodríguez-Fernández, M. Mercedes

“…Reactions of (2- p-tolylsulfinyl)benzyl alkyl (and aryl) ketones (δ-ketosulfoxides) with Et 2AlCN in the presence of Yb(OTf) 3 take place in a completely…”
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Remote Stereocontrol by Sulfinyl Groups:  Reduction of δ-Ketosulfoxides by García Ruano, José L, Fernández-Ibáñez, M. Ángeles, Maestro, M. Carmen, Rodríguez-Fernández, M. Mercedes

“…The reduction of δ-ketosulfoxides constitutes the first evidence of the efficiency of the sulfinyl group to control the stereoselectivity of 1,5-asymmetric…”
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Synthesis of chiral ortho-( p-tolylsulfinyl) benzyl ketones by García Ruano, José L., Alemán, José, Teresa Aranda, M., Ángeles Fernández-Ibáñez, M., Mercedes Rodríguez-Fernández, M., Carmen Maestro, M.

“…( S)- ortho-( p-Tolylsulfinyl)benzyl alkyl (and aryl) ketones 1a– e were prepared in good yields by reaction of esters or nitriles with the lithium benzyl…”
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Asymmetric synthesis of tertiary vinyl carbinols by highly stereoselective methylation of α-methyl-β-ketosulfoxides with aluminum reagents by Garcı́a Ruano, José L, Mercedes Rodrı́guez-Fernández, M, Maestro, M.Carmen

“…Methylation of chiral acyclic α-methyl-β-ketosulfoxides with Me 3Al and Me 2AlCl is reported. Induced configuration at hydroxylic carbon is mainly controlled…”
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High Stereocontrol in Aldol Reaction with Ketones:  Enantioselective Synthesis of β-Hydroxy γ-Ketoesters by Ester Enolate Aldol Reactions with 2-Acyl-2-alkyl-1,3-dithiane 1-Oxides by García Ruano, José L, Barros, David, Maestro, M. Carmen, Slawin, Alexandra M. Z, Page, Philip C. Bulman

“…The asymmetric aldol reaction of 1,2-diketones, masked as nonracemic 2-acyl dithiane oxides, with lithium enolates derived from several esters and lactones,…”
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MIRC reactions of 2-bromo-5-( l-menthyloxy)furan-2(5 H)-one with stabilized anions. Preparation of homochiral bicyclic γ-butyrolactones by Maestro, M.Carmen, Barquilla, M.Cruz, Martı́n, M.Rosario

“…Homochiral (5 R)-4-bromo-5-( l-menthyloxy)furan-2(5 H)-one with stabilized carbanions (from nitroalkanes, malononitrile and ethyl acetoacetate) afforded…”
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Highly Stereoselective Aldol Reactions of Lithium Ester Enolates with (R S)-2-(p-Tolylsulfinyl)cyclohexanones by García Ruano, José L, Barros, David, Maestro, M. Carmen, Araya-Maturana, Ramiro, Fischer, Jean

“…Aldol reactions lithium alkyl acetates (LiCRR‘‘CO2R‘) with (R S)-2-(p-tolylsulfinyl)cyclohexanone (1) (as an epimeric mixture at C-2) take place with very…”
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Synthesis of enantiomerically pure ( R)- and ( S)-2-ethoxycarbonylmethyl-2-hydroxy-cyclohexanones by Garcı́a Ruano, José L, Barros, David, Maestro, M.Carmen, Alcudia, Ana, Fernández, Inmaculada

“…Sulfenylation of 2-p-tolylsulfinyl cyclohexanone can be achieved at −78°C with thiosulfonates. The in situ aldol reaction of these compounds with ethyl acetate…”
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Highly stereoselective additions of sulfur stabilized carbanions to [(S) R]-2-( p-tolylsulfinyl)cyclohexanones by Garcı́a Ruano, José L, Barros, David, Maestro, M.Carmen, Martı́n Castro, Ana M, Raithby, Paul R

“…We describe the addition reactions of α-thiocarbanions derived from sulfoxides, thioethers, and sulfones to 2-( p-tolylsulfinyl)cyclohexanones. The high…”
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Synthesis of enantiomerically pure 1,3-diols by stereoselective reduction of β-ketosulfoxides. Influence of a stereogenic hydroxylic centre at the δ-position by García Ruano, JoséL., González-Vadillo, Ana M., Maestro, M.Carmen

“…The influence of the stereogenic hydroxylic carbon at the δ-position of the carbonyl group in 1,5-bis( p-tolylsulfinyl)-4-hydroxy-2-pentanone 1 and 2,6-bis(…”
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Enantiomerically pure 3- p-tolylsulfinyl acrolein and crotonaldehyde dimethylacetals. Stereoselective reduction of β-keto-γ,γ-dialkoxysulfoxides by García Ruano, JoséL., Maestro, M.Carmen, Sánchez-Sancho, Francisco

“…The synthesis of the title compounds by basic elimination on the O-derivatives of unsubstituted and α-methylated β-hydroxy-γ,γ-dialkoxysulfoxides is reported…”
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Asymmetric synthesis of (S)-zearalenone dimethyl ether, an orsellinic acid type macrolide by Solladie, Guy, Maestro, M. Carmen, Rubio, Almudena, Pedregal, Concepcion, Carreno, M. Carmen, Garcia Ruano, Jose L

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Additions of enantiopure alpha-sulfinyl carbanions to (S)-N-sulfinimines: asymmetric synthesis of beta-amino sulfoxides and beta-alphamino alcohols by Garcia Ruano JL, Alcudia, A, del Prado M, Barros, D, Maestro, MC, Fernandez, I, I

“…The addition of the lithium anions derived from (R)- and (S)-methyl and -ethyl p-tolyl sulfoxides to (S)-N-benzylidene-p-toluenesulfinamide provides an easy…”
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