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ChemInform Abstract: Enantioselective Deprotonation/Electrophile Addition Reactions of Tricarbonyl(phenyl carbamate)chromium Complexes.

✍ Scribed by Anna Quattropani; Gerald Bernardinelli; E. Peter Kuendig

Publisher: John Wiley and Sons
Year: 2010
Weight: 35 KB
Volume: 30
Category: Article
ISSN: 0931-7597
DOI: 10.1002/chin.199944186

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✦ Synopsis

Enantioselective Deprotonation/Electrophile Addition Reactions of Tricarbonyl(phenyl carbamate)chromium Complexes.

-Optimized conditions are elaborated for the preparation of chiral ortho-substituted complexes staring from racemic complex (I). The enantiomeric purity of the products can be increased to 87-98% by a single recrystallization. When the reaction temperature in the lithiation step is raised to -20

• C prior to the addition of an electrophile, anionic ortho-Fries rearrangement is observed to give ethers of type (XII). -(QUATTROPANI, ANNA; BERNARDINELLI,

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