Journal
ADVANCED SYNTHESIS & CATALYSIS
Volume 352, Issue 10, Pages 1621-1624Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/adsc.201000214
Keywords
aldol reaction; enantioselectivity; heteroarenesulfonyl group; Montmorillonite; organocatalysis
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Funding
- JSPS [20750074]
- Toyoaki Scholarship Foundation
- Grants-in-Aid for Scientific Research [20750074] Funding Source: KAKEN
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N-(2-Thiophenesulfonyl)prolinamide could be easily introduced into Montmorillonite by a simple ion-exchange reaction. The asymmetric aldol reactions between various isatins with acetone or acetaldehyde using a heterogeneous Montmorillonite-entrapped organocatalyst afforded products with high enantioselectivity. The catalyst was readily reusable without significant loss of catalytic activity or enantioselectivity.
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