25140-26-5Relevant academic research and scientific papers
Aza-bis(oxazolines): New chiral ligands for asymmetric catalysis
Glos, Martin,Reiser, Oliver
, p. 2045 - 2048 (2000)
diagram presented Aza-bis(oxazolines) are introduced as chiral ligands for asymmetric catalysis combining the advantages of easy availability of bis(oxazolines) and backbone variability of aza-semicorrins. Especially, the title ligands could be attached t
Modular ligands in asymmetric synthesis. Copper-mediated cyclopropanation
Tepfenhart, Dora,Moisan, Lionel,Dalko, Peter I.,Cossy, Janine
, p. 1781 - 1783 (2004)
The chiral imidazoline/copper catalyst system efficiently mediates asymmetric intermolecular cyclopropanations. Complexes derived from (R,R)- or (S,S)-1,1-diphenylethylenediamine, cyclic ketones, and Cu(I) or Cu(II) triflates were compared. The reaction b
Synthesis of polymer bound azabis(oxazoline) ligands and their application in asymmetric cyclopropanations
Werner, Heiko,Herrerias, Clara I.,Glos, Michael,Gissibl, Anja,Fraile, Jose M.,Perez, Ignacio,Mayoral, Jose A.,Reiser, Oliver
, p. 125 - 132 (2007/10/03)
Aza(bisoxazoline) ligands were attached to various polymeric supports and the resulting immobilized ligands were evaluated in copper(I)-catalyzed asymmetric cyclopropanations. The efficiency of these transformations depends greatly on the polymeric support, on the protocol being applied for the immobilization of the ligands, and on the preparation of the catalysts.
ENANTIOSELECTIVE DEPROTONATION OF TWO RACEMIC CYCLIC CARBONYL COMPOUNDS BY A CHIRAL LITHIUM AMIDE
Eleveld, M. B.,Hogeveen, H.
, p. 631 - 634 (2007/10/02)
The cyclic carbonyl compounds 2 and 8 have been obtained in optical active form (o.y. 46percent and 36percent, respectively) from the racemic compounds by a deprotonation/protonation sequence, using chiral lithium amide 1.The optical activity of 2 is caus
