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Yuliya V Rassukana - One of the best experts on this subject based on the ideXlab platform.
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diastereoselective cycloaddition of s n 1 phenylethylimino trifluoropropionate and trifluoroethylphosphonate with Diazomethane
Tetrahedron-asymmetry, 2017Co-Authors: Yuliya V Rassukana, Ludmyla V Bezgubenko, Oleg V Stanko, Eduard B Rusanov, Irina B Kulik, P P OnyskoAbstract:Abstract The cycloaddition reaction of ( S )-(α-phenylethylimino)trifluoropropionate with Diazomethane leads to a diastereomeric mixture (4.5:1) of 5-trifluoromethyl-1,2,3-triazoline-5-carboxylates. Enantiopure diastereomers were isolated by column chromatography and converted into their respective non-racemic 2-trifluoromethyl - aziridine-2-carboxylates and carboxylic acids. The absolute configuration of newly formed stereogenic centers was determined by XRD analysis. The stereoselective reaction between ( S )- N -(α-phenylethyl)trifluoroacetimidoylphosphonate and Diazomethane produces a diastereomeric mixture (2.5:1) of 5-trifluoromethyltriazoline-5-phosphonates readily separated by column chromatography in diastereomerically pure forms.
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cycloaddition of n substituted imines of trifluoropyruvate with Diazomethane efficient synthesis of 2 trifluoromethyl aziridine 2 carboxylates
ChemInform, 2013Co-Authors: Yuliya V Rassukana, Ludmyla V Bezgubenko, P P Onysko, Anatoly D SynytsyaAbstract:Reaction of imines with Diazomethane give triazole derivatives as the major products along with the desired aziridines.
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cycloaddition of n substituted imines of trifluoropyruvate with Diazomethane efficient synthesis of 2 trifluoromethyl aziridine 2 carboxylates
Journal of Fluorine Chemistry, 2013Co-Authors: Yuliya V Rassukana, Ludmyla V Bezgubenko, P P Onysko, Anatoly D SynytsyaAbstract:Abstract A convenient synthesis for 2-trifluorometylaziridine-2-carboxylates and respective acids, based on reaction of N-substituted trifluoropyruvate imines 1 with Diazomethane, was developed.
P P Onysko - One of the best experts on this subject based on the ideXlab platform.
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diastereoselective cycloaddition of s n 1 phenylethylimino trifluoropropionate and trifluoroethylphosphonate with Diazomethane
Tetrahedron-asymmetry, 2017Co-Authors: Yuliya V Rassukana, Ludmyla V Bezgubenko, Oleg V Stanko, Eduard B Rusanov, Irina B Kulik, P P OnyskoAbstract:Abstract The cycloaddition reaction of ( S )-(α-phenylethylimino)trifluoropropionate with Diazomethane leads to a diastereomeric mixture (4.5:1) of 5-trifluoromethyl-1,2,3-triazoline-5-carboxylates. Enantiopure diastereomers were isolated by column chromatography and converted into their respective non-racemic 2-trifluoromethyl - aziridine-2-carboxylates and carboxylic acids. The absolute configuration of newly formed stereogenic centers was determined by XRD analysis. The stereoselective reaction between ( S )- N -(α-phenylethyl)trifluoroacetimidoylphosphonate and Diazomethane produces a diastereomeric mixture (2.5:1) of 5-trifluoromethyltriazoline-5-phosphonates readily separated by column chromatography in diastereomerically pure forms.
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cycloaddition of n substituted imines of trifluoropyruvate with Diazomethane efficient synthesis of 2 trifluoromethyl aziridine 2 carboxylates
ChemInform, 2013Co-Authors: Yuliya V Rassukana, Ludmyla V Bezgubenko, P P Onysko, Anatoly D SynytsyaAbstract:Reaction of imines with Diazomethane give triazole derivatives as the major products along with the desired aziridines.
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cycloaddition of n substituted imines of trifluoropyruvate with Diazomethane efficient synthesis of 2 trifluoromethyl aziridine 2 carboxylates
Journal of Fluorine Chemistry, 2013Co-Authors: Yuliya V Rassukana, Ludmyla V Bezgubenko, P P Onysko, Anatoly D SynytsyaAbstract:Abstract A convenient synthesis for 2-trifluorometylaziridine-2-carboxylates and respective acids, based on reaction of N-substituted trifluoropyruvate imines 1 with Diazomethane, was developed.
Rosa M Ortuno - One of the best experts on this subject based on the ideXlab platform.
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cyclopropanation of cyclohexenone by Diazomethane catalyzed by palladium diacetate evidence for the formation of palladium 0 nanoparticles
Organometallics, 2007Co-Authors: Isabelle Favier, Montserrat Gomez, Ona Illa, David Picurelli, Vicenc Branchadell, Christobal Rodriguezgarcia, Carles Acostasilva, Antonio Oliva, Rosa M OrtunoAbstract:The Diazomethane-mediated cyclopropanation of cyclohexenone using Pd(OAc)2 and different sources of Pd(0) species as precatalysts has been studied. In the presence of an excess of Diazomethane, Pd(OAc)2 rapidly evolves to the formation of palladium nanoparticles (less than 1 min), which are active as catalysts in the cyclopropanation process. The nature of these particles has been analyzed through transmission electron microscopy showing a size distribution between 6 and 40 nm. These nanoparticles generated in situ are more active than Pd(0) complexes, preformed nanoparticles, and commercial palladium powder. Cyclic voltammetry measurements of the reaction solution after completion show the presence of Pd(0) species. This is the first time that Pd(0) nanoparticles are evidenced in a cyclopropanation reaction. Moreover, the reduction of Pd(OAc)2 to Pd(0) in the presence of Diazomethane has been theoretically studied through density functional calculations. The formation of methyl and allyl acetates as orga...
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cyclopropanation of cyclohexenone by Diazomethane catalyzed by palladium diacetate evidence for the formation of palladium 0 nanoparticles
Organometallics, 2007Co-Authors: Isabelle Favier, Montserrat Gomez, Ona Illa, David Picurelli, Vicenc Branchadell, Christobal Rodriguezgarcia, Carles Acostasilva, Antonio Oliva, Rosa M OrtunoAbstract:The Diazomethane-mediated cyclopropanation of cyclohexenone using Pd(OAc)2 and different sources of Pd(0) species as precatalysts has been studied. In the presence of an excess of Diazomethane, Pd(...
Ludmyla V Bezgubenko - One of the best experts on this subject based on the ideXlab platform.
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diastereoselective cycloaddition of s n 1 phenylethylimino trifluoropropionate and trifluoroethylphosphonate with Diazomethane
Tetrahedron-asymmetry, 2017Co-Authors: Yuliya V Rassukana, Ludmyla V Bezgubenko, Oleg V Stanko, Eduard B Rusanov, Irina B Kulik, P P OnyskoAbstract:Abstract The cycloaddition reaction of ( S )-(α-phenylethylimino)trifluoropropionate with Diazomethane leads to a diastereomeric mixture (4.5:1) of 5-trifluoromethyl-1,2,3-triazoline-5-carboxylates. Enantiopure diastereomers were isolated by column chromatography and converted into their respective non-racemic 2-trifluoromethyl - aziridine-2-carboxylates and carboxylic acids. The absolute configuration of newly formed stereogenic centers was determined by XRD analysis. The stereoselective reaction between ( S )- N -(α-phenylethyl)trifluoroacetimidoylphosphonate and Diazomethane produces a diastereomeric mixture (2.5:1) of 5-trifluoromethyltriazoline-5-phosphonates readily separated by column chromatography in diastereomerically pure forms.
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cycloaddition of n substituted imines of trifluoropyruvate with Diazomethane efficient synthesis of 2 trifluoromethyl aziridine 2 carboxylates
ChemInform, 2013Co-Authors: Yuliya V Rassukana, Ludmyla V Bezgubenko, P P Onysko, Anatoly D SynytsyaAbstract:Reaction of imines with Diazomethane give triazole derivatives as the major products along with the desired aziridines.
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cycloaddition of n substituted imines of trifluoropyruvate with Diazomethane efficient synthesis of 2 trifluoromethyl aziridine 2 carboxylates
Journal of Fluorine Chemistry, 2013Co-Authors: Yuliya V Rassukana, Ludmyla V Bezgubenko, P P Onysko, Anatoly D SynytsyaAbstract:Abstract A convenient synthesis for 2-trifluorometylaziridine-2-carboxylates and respective acids, based on reaction of N-substituted trifluoropyruvate imines 1 with Diazomethane, was developed.
Anatoly D Synytsya - One of the best experts on this subject based on the ideXlab platform.
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cycloaddition of n substituted imines of trifluoropyruvate with Diazomethane efficient synthesis of 2 trifluoromethyl aziridine 2 carboxylates
ChemInform, 2013Co-Authors: Yuliya V Rassukana, Ludmyla V Bezgubenko, P P Onysko, Anatoly D SynytsyaAbstract:Reaction of imines with Diazomethane give triazole derivatives as the major products along with the desired aziridines.
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cycloaddition of n substituted imines of trifluoropyruvate with Diazomethane efficient synthesis of 2 trifluoromethyl aziridine 2 carboxylates
Journal of Fluorine Chemistry, 2013Co-Authors: Yuliya V Rassukana, Ludmyla V Bezgubenko, P P Onysko, Anatoly D SynytsyaAbstract:Abstract A convenient synthesis for 2-trifluorometylaziridine-2-carboxylates and respective acids, based on reaction of N-substituted trifluoropyruvate imines 1 with Diazomethane, was developed.