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(2011) Efficient ballmill procedure in the 'green' asymmetric aldol reaction organocatalyzed by (S)prolinecontaining dipeptides in the presence of water. Tetrahedron 67 ( ....
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Dec 02, 2014· Hernández JG, Juaristi E. Efficient ballmill procedure in the 'green' asymmetric aldol reaction organocatalyzed by (S)prolinecontaining dipeptides in the presence of water. Tetrahedron. 2011; 67 (36):6953–6959....
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The aldol reaction between acetone 6a (3 equiv.) and nonprotected isatin 7 with a catalyst loading of 20 mol % at room temperature was chosen as benchmark to test the efficiency of catalyst 3 ....
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In more recent work, Hernández and Juaristi reported the asymmetric aldol reaction between ketones and various aromatic aldehydes under solventfree conditions in a ball mill, with organocatalysis by several (S)prolinecontaining dipeptides....
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Read quot;Efficient ball mill procedure in the green asymmetric aldol reaction organocatalyzed by ( S ) proline containing dipeptides in the presence of water, Tetrahedronquot; on DeepDyve, the largest online rental service for scholarly research with thousands of academic publications available at ....
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Aldol reaction. Since the origin of organocatalysis, the asymmetric aldol reaction has been one of the most intensely studied reactions, providing an easy access to chiral βhydroxycarbonyl compounds, which are important building blocks for various bioactive molecules . Among different organocatalysts used for asymmetric aldol reactions, proline and its derivatives emerged as powerful catalysts for the ....
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A highly efficient asymmetric organocatalytic aldol reaction in a ball ... Chemistry. 2007;13(17):471022. A highly efficient asymmetric organocatalytic aldol reaction in a ball mill. Rodríguez B(1), Bruckmann A, Bolm C. Get Price...
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Efficient ballmill procedure in the 'green' asymmetric aldol reaction organocatalyzed by (S)prolinecontaining dipeptides in the presence of water Bookmark Download...
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Three different methods are assayed: simple conventional magnetic stirring, magnetic stirring after previous dissolution in THF and evaporation, and ball mill technique. These procedures allow one to reduce not only the amount of required ketone to 2 equiv but also the reaction time to give the aldol products with regio, diastereo, and enantioselectivities comparable to those in organic or aqueous ....
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Rodriguez B, Bruckmann A, Bolm Highly Efficient Asymmetric OrganocatalyticAldol Reaction in a Ball ; 13: . Hernandez J G, Juaristi E. Efficient ballmill procedure in the 'green' asymmetric aldol reaction organocatalyzed by ( S ) prolinecontaining dipeptides in the presence of water....
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