91850-96-3Relevant academic research and scientific papers
Enantioselective additions of (trifluoromethyl)trimethylsilane to α-imino ketones derived from aryl glyoxals
Obijalska, Emilia,Mlostoń, Grzegorz,Six, Alice
, p. 2462 - 2465 (2013/07/05)
Chemoselective additions of (trifluoromethyl)trimethylsilane to α-imino ketones derived from aryl glyoxals in the presence of a catalytic amount of enantiomerically pure ammonium bromides, derived from Cinchona alkaloids and K2CO3 le
Asymmetric synthesis of β-amino alcohols by the transfer hydrogenation of α-keto imines
Tafelska-Kaczmarek, Agnieszka,Prewysz-Kwinto, Andrzej,Skowerski, Krzysztof,Pietrasiak, Katarzyna,Kozakiewicz, Anna,Zaidlewicz, Marek
experimental part, p. 2244 - 2248 (2010/11/03)
The asymmetric transfer hydrogenation of representative aryl and benzofuranyl 2-tert-butylaminoethanones with formic acid-triethylamine, catalyzed by RhCl[(R,R)-TsDPEN](C5Me5), produced the corresponding β-tert-butylamino alcohols in 97-99% ee. A short asymmetric synthesis of (R)-bufuralol, a potent β-adrenergic receptor antagonist, is described. This approach to β-amino alcohols from ketones circumvents the halogenation-reduction-amination sequence.
Reactions of α-imino ketones derived from arylglyoxals with (trifluoromethyl)trimethylsilane; A new route to β-amino-α- trifluoromethyl alcohols
Mloston, Grzegorz,Obijalska, Emilia,Tafelska-Kaczmarek, Agnieszka,Zaidlewicz, Marek
experimental part, p. 1289 - 1296 (2011/02/22)
The reactions of α-imino ketones, derived from arylglyoxals, with (trifluoromethyl)trimethylsilane (CF3SiMe3) in DME solution, in the presence of catalytic amount of CsF, at room temperature, yield O-silylated β-imino alcohols in the
The Reaction of Phenylglyoxal with Primary Aliphatic and Aromatic Amines. Synthesis of Phenylglyoxal Monoimines and some Derivatives.
Alcaide, Benito,Escobar, Gerardo,Perez-Ossorio, Rafael,Plumet, Joaquin,Sanz, Dionisia
, p. 1466 - 1488 (2007/10/02)
Condensation of phenylglyoxal with primary aliphatic amines yields the related keto-aldimines.When primary aromatic amines are used, aldimines, amino-hydroxy-ketones, diamino-ketones, and alkoxy-amino-ketones are obtained depending upon the nature of the amine and the experimental conditions.Alternatively the monoimines can be obtained by dehydration of C-hydroxyphenacylarylamines and by demethanolation of C-methoxyphenacylarylamines both on treatment with Pd/C catalyst.Reduction of phenylglyoxal monoimines with sodium borohydride yielded H-substituted 1-phenyl-2-aminoethanols and 1,3-dipolar cycloaddition of the imines with p-chlorobenzonitrile oxide afforded 4-substituted 5-benzoyl-3-(p-chlorophenyl)-4,5-dihydro-1,2,4-oxadiazoles.
Removal of Toluene-p-sulphonyl Groups from Sulphonamides. Part 4. Synthesis of Phenylglyoxal Imine Monomers
McKay, William R.,Proctor, George R.
, p. 2435 - 2442 (2007/10/02)
Syntheses and reactions of N-tosylphenacylamines with bases have been systematically examined.Monomeric C-methoxy-imines are available from some of these reactions.C-Methoxyphenacylarylamines, made by two routes, were converted into monomeric imines on treatment with noble-metal catalysts, The boron trifluoride-catalysed reactions of aryl aldehydes with sulphonamides provide a new and convenient route to N-sulphonylarylimines.
