116831-06-2Relevant articles and documents
Stereoselective Reactions. XXIV. Chlorotrimethylsilane Promoted Asymmetric Michael Reaction of Chiral Lithioenamines Derived from α-Alkyl β-Keto Esters
Ando, Kaori,Seo, Wonjun,Tomioka, Kiyoshi,Koga, Kenji
, p. 13081 - 13088 (1994)
Chlorotrimethylsilane promoted asymmetric Michael reaction of the chiral lithioenamines derived from α-alkyl β-keto esters and (S)-valine tert-butyl ester is described.Complementary asymmetric syntheses producing either enantiomers from the same starting
CHLOROTRIMETHYLSILANE PROMOTED ASYMMETRIC MICHAEL REACTION OF CHIRAL ENAMINES OF α-ALKYL β-KETO ESTERS
Tomioka, Kiyoshi,Seo, Wonjun,Ando, Kaori,Koga, Kenji
, p. 6637 - 6640 (1987)
By the promotion of chlorotrimethylsilane, asymmetric Michael reaction of the chiral enamines (2) of α-alkyl β-keto esters (1) with methyl vinyl ketone and ethyl acrylate proceeded to afford, after hydrolysis, either enantiomer of the corresponding adduct
SUBSTITUTED SPIRO AZABICYCLICS AS MODULATORS OF CHEMOKINE RECEPTOR ACTIVITY
-
Page/Page column 64-65, (2008/06/13)
The present application describes modulators of CCR3 of formula (Ia) and (Ib): (I) or pharmaceutically acceptable salt forms thereof, wherein Z, R1, R2, R3, R4, R5, R5', R6, a, b
Catalytic asymmetric Michael reaction promoted by the La-Na-BINOL complex (LSB). Enantioface selection on Michael donors
Sasai, Hiroaki,Emori, Eita,Arai, Takayoshi,Shibasaki, Masakatsu
, p. 5561 - 5564 (2007/10/03)
LSB can efficiently promote catalytic asymmetric Michael reactions in CH2Cl2, inducing high enantiomeric excesses on the Michael donor side. The multifunctional character of LSB appears to give rise to high stereoselectivity, offerin
Synthesis of optically active α,α-distubstituted β-keto esters via chiral β-enamino esters
Guingant,Hammami
, p. 411 - 414 (2007/10/02)
Michael addition of chiral β-enamino esters to MVK and acrylates promoted by Lewis acids (ZnCl2, MgBr2) or high pressure (11-14 Kbar) afforded, after hydrolytic work-up, α,α-disubstituted β-keto esters in good enantiomeric carbon exc
Synthesis of Optically Active Michael Adducts Via Chiral Enamines
Brunner, Henri,Kraus, Joerg,Lautenschlager, Hans-Juergen
, p. 1161 - 1168 (2007/10/02)
Chiral enamines, obtained by Schiff base condensation from 1,3-dicarbonyl compounds and (R)-(+)-1-phenylethylamine, were found to undergo diastereoselective Michael reactions with α,β-unsaturated carbonyl compounds.After removal of the chiral auxiliary (R