828291-16-3Relevant academic research and scientific papers
THE ASYMMETRIC MICHAEL PROCESS INVOLVING CHIRAL IMINES: THE DIASTEREOFACIAL DIFFERENTIATION ASPECT
d'Angelo, Jean,Revial, Gilbert,Guingant, Andre,Riche, Claude,Chiaroni, Angele
, p. 2645 - 2648 (1989)
A mechanism for the diastereofacial differentiation in the title reaction is proposed on the basis of the variation of the chiral auxiliary amines and of the examination of the crystal structure of enamino-ester 15.
Stereoselective Michael additions on α-aminoacrylates as the key step to an l-Oic analogue bearing a quaternary stereocenter
Cecchinelli, Federico Maria,Celentano, Giuseppe,Gaggero, Nicoletta,Puglisi, Alessandra
supporting information, p. 671 - 674 (2020/02/11)
A novel, highly stereoselective route for pharmaceutically relevant octahydroindole-2-carboxylates bearing a quaternary stereocenter has been developed. The key chiral intermediates 3 have been prepared in good yields and enantiomeric excesses up to 98%. A broad substrate range has been tolerated under the reaction conditions.
Intramolecular reductive ketone-alkynoate coupling reaction promoted by (η2-propene)titanium
Schaefer, Christian,Miesch, Michel,Miesch, Laurence
supporting information; scheme or table, p. 3253 - 3257 (2012/06/01)
Intramolecular reductive coupling of cycloalkanones tethered to alkynoates in the presence of (η2-propene)titanium was successfully performed to provide hydroxy-esters in a diastereoselective manner. Subsequent lactonization afforded angularly
Pyrrolopyrazinyl Urea Kinase Inhibitors
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Page/Page column 41, (2010/06/19)
The present invention relates to the use of novel pyrrolopyrazinyl urea derivatives of Formula I, wherein the variables R1, R2, R3, R4, and R5 are defined as described herein, which inhibit JAK and are useful for the treatment of auto-immune and inflammatory diseases.
Asymmetric strecker synthesis of the four α-quaternary 1-amino-2-methylcyclohexanecarboxylic acids
Volk, Franz-Josef,Frahm, August Wilhelm
, p. 1893 - 1903 (2007/10/03)
The synthesis of the four 1-amino-2-methylcyclohexanecarboxylic acids 13, 14, 15, and 16 from diastereomeric mixtures of the α-amino nitriles 1-4 by successive application of conc. H2SO4, Pd/C H2, and conc. HCl is describe
ASYMMETRIC SYNTHESIS OF CIS-2-SUBSTITUTED CYCLOHEXANAMINES WITH HIGHT OPTICAL PURITY
Frahm, A. W.,Knupp, G.
, p. 2633 - 2636 (2007/10/02)
Asymmetric reductive amination of racemic 2-substituted cyclohexanones (R= methyl, ethyl, phenyl, benzyl) using optically active 1-phenyl-ethylamines yields optically active cis-cyclohexanamines.
