526-06-7Relevant articles and documents
Stereoselective total synthesis of furofuran lignans through dianion aldol condensation
Jung, Jae-Chul,Kim, Ju-Cheun,Moon, Hyung-In,Park, Oee-Sook
, p. 6433 - 6437 (2007/10/03)
Highly stereoselective total synthesis of (+)-eudesmin, (+)-yangambin, (-)-eudesmin, and (-)-yangambin is described. This method is useful to generate the core skeleton of furofuran rings utilizing modification of Evans asymmetric aldol condensation.
Stereoselective intramolecular coupling of diaroylacetates of (1R,1′R)-exo,exo′-3,3′-biisoborneol by oxidation with Br 2
Kise, Naoki,Fujimoto, Azumi,Moriyama, Noriaki,Ueda, Nasuo
, p. 2495 - 2497 (2007/10/03)
The oxidative coupling of diaroylacetate derivatives prepared from (1R,1′R)-exo,exo′-3,3′-biisoborneol with NaH-Br2 gave the corresponding intramolecularly coupled products stereoselectively. The major (R,R)-isomers thus obtained were transformed to (-)-Sesamin and (-)-Eudesmin.
Stereoselective homocoupling of chiral 1-aroylacetyl-2-imidazolidinones by oxidation with Br2
Kise, Naoki,Fujimoto, Azumi,Ueda, Nasuo
, p. 1845 - 1847 (2007/10/03)
The oxidative coupling of sodium enolates of (4R,5S)-1-aroylacetyl-3,4-dimethyl-5-phenyl-2-imidazolidinones with Br2 as the oxidant affords the R,R-dimers stereoselectively. The R,R-selectivity can be explained by a radical coupling mechanism.