58059-08-8Relevant articles and documents
ION PAIR CATALYSIS OF TUNGSTATE AND MOLYBDATE
-
Page/Page column 42-43; 69-75, (2017/10/30)
D The present invention relates to ion pair catalysts (I) comprising the cationic bisguanidinium ligand (A) and diperoxomolybdate anion (B). The present invention also relates to ion pair catalysts (III) comprising the cationic bisguanidinium ligand (C) and peroxotungstate anion (D). It further relates to the use of the said catalysts in the manufacture of enantiomerically enriched sulfoxides.
Diastereofacial selectivity in aldol-type condensation induced by optically pure α-sulfinyl acetate with α-substituted aldehydes
Bauder, Claude
, p. 2243 - 2246 (2008/09/19)
Highly diastereoselective aldol-type condensations induced by the chiral magnesium enolate of tert-butyl p-tolyl sulfinyl acetate were performed with optically pure alkyl or hydroxy α-substituted aldehydes. The addition of chiral α-sulfinyl acetate to var
3. Naphthopyranquinone Antibiotics: Novel Enantioselective Syntheses of Frenolicin B and Some of Its Stereoisomers
Masquelin, Thierry,Hengartner, Urs,Streith, Jacques
, p. 43 - 58 (2007/10/03)
Two new enantioselective syntheses of the naphthopyranquinone antibiotic frenolicin B (1), of its enantiomer 2, and of its diastereoisomers 3 and 4 were accomplished using two different routes from optically active β-hydroxy esters (R)- and (S)-11 and 18.