ChemInform Abstract: Chiral Tricarbonyl(η6arene)chromium(0) Complexes in Stereoselective Hetero Diels-Alder Reactions.
✍ Scribed by C. BALDOLI; P. DEL BUTTERO; M. DI CIOLO; S. MAIORANA; A. PAPAGNI
- Book ID
- 112034290
- Publisher
- John Wiley and Sons
- Year
- 2010
- Weight
- 33 KB
- Volume
- 27
- Category
- Article
- ISSN
- 0931-7597
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The reaction of (-)lg or (+)-IS-tricarbonyl(2-substituted benzaldehyde)chromium complexes with tertbutylmethanesulfonamide dianion afforded, after decomplexation and intramolecular cyclization, the enantiomerically pure N-tert-butyl-3-(2-phenyl substituted)-1,2-thiazetidine 1,1 dioxide derivatives.
Asymmetric Hetero-Diels-Alder Reactions Catalyzed by Chiral (Salen)Chromium(III) Complexes. -The title reactions between (I) and a wide range of aldehydes require only 2 mol% of the catalyst and afford the pyranone derivatives (III) with good enantioselectivity. Among different derivatives of the c