ChemInform Abstract: Catalytic Asymmetric Aminohydroxylation with Amino-Substituted Heterocycles as Nitrogen Sources.
โ Scribed by Lukas J. Goossen; Hong Liu; K. Ruprecht Dress; K. Barry Sharpless
- Publisher
- John Wiley and Sons
- Year
- 2010
- Weight
- 33 KB
- Volume
- 30
- Category
- Article
- ISSN
- 0931-7597
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โฆ Synopsis
Catalytic Asymmetric Aminohydroxylation with Amino-Substituted Heterocycles as Nitrogen Sources.
-It is found that simple aminopyrimidines and aminotriazines (Ia) and (Ic) function as excellent N-sources for the title reaction of a number of representative olefins to afford N-protected amino alcohols in enantiomeric excesses of 56 to 97%. For all unsymmetrical olefins, a strong preference for the isomer with nitrogen in the benzylic position is observed. - (GOOSSEN,
๐ SIMILAR VOLUMES
Fixation of Atmospheric Nitrogen: Synthesis of Heterocycles with Atmospheric Nitrogen as the Nitrogen Source. -N-heterocycles are synthesized by a simple ring closure reaction with atmospheric N 2 as the nitrogen source. The process is applied to a formal synthesis of (ยฑ)-lycopodine (XII). -(MORI,
Asymmetric aminohydroxylation of the alkenes (I) and (IV) is performed with the title carbamate using an asymmetric catalyst. The silyl protecting group of the products is readily cleaved with fluoride under mild conditions. -