18608-92-9Relevant articles and documents
Z-, E-Isomers of 1,2:4,5-di-o-cyclohexylidene-β-D-erythro-hexo-2,3-diulopyranose oxime
Cao,Zhou,Liu
, p. 959 - 960 (1996)
The syntheses of 1,2:4,5-di-O-cyclohexylidene-β-D-fructopyranose and 1,2:4,5-di-O-cyclohexylidene-β-D-eryrtro-hexo-2,3-diulopyranose were improved. A method for the separation of isomeric oximes of diulose was developed, and their structures were established by 13C NMR spectroscopy. 3-Amino-3-deoxy-1,2:4,5-di-O-cyclohexylidene-β-D-psycopyranose was obtained.
Catalytic asymmetric epoxidation
-
Page column 54, (2010/01/30)
A compound and method for producing an enantiomerically enriched epoxide from an olefin using a chiral ketone and an oxidizing agent is disclosed.
Structural probing of ketone catalysts for asymmetric epoxidation
Tu, Yong,Wang, Zhi-Xian,Frohn, Michael,He, Mingqi,Yu, Hongwu,Tang, Yong,Shi, Yian
, p. 8475 - 8485 (2007/10/03)
A series of chiral ketones derived from carbohydrates were investigated as catalysts for the asymmetric epoxidation. Fructose-derived ketones are found to be efficient catalysts. The studies show that the structural requirements for the ketone catalysts are very stringent and different types of olefins may require ketones with different structural arrangements. The current study allows us to further understand the chiral ketone catalyzed asymmetric epoxidation and provides some insight for the development of new catalysts.