The reaction rate of a catalyzed reaction is faster than the reaction rate of the uncatalyzed reaction at the same temperature. 57-48-7, Name is (3S,4R,5R)-1,3,4,5,6-Pentahydroxyhexan-2-one, SMILES is [H][C@@](O)(CO)[C@@]([H])(O)[C@]([H])(O)C(=O)CO, in an article , author is Ke, Zhihai, once mentioned of 57-48-7, Quality Control of (3S,4R,5R)-1,3,4,5,6-Pentahydroxyhexan-2-one.
alpha,alpha-Dihalo-N-arylacetamides are commonly used as intermediates in various organic reactions. In the study described here, a catalytic synthesis of alpha,alpha-dihalo-N-arylacetamides from beta-oxo amides was developed using zwitterionic catalysts and N-halosuccinimides as the halogen sources. The corresponding alpha,alpha-dihalo-N-arylacetamides were obtained in good to excellent yields, and no aromatic halogenated side products were detected. The reaction conditions were mild, and no strong base or acid was required.
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Reference:
Chiral Catalysts,
,Chiral catalysts – SlideShare