✦ LIBER ✦
Magnesium-Lanthanum Mixed Metal Oxide: a Strong Solid Base for the Michael Addition Reaction
✍ Scribed by Bhaskar Veldurthy; Jean Marc Clacens; François Figueras
- Publisher
- John Wiley and Sons
- Year
- 2005
- Tongue
- English
- Weight
- 141 KB
- Volume
- 347
- Category
- Article
- ISSN
- 1615-4150
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✦ Synopsis
Abstract
Michael additions were achieved quantitatively at room temperature with a broad spectrum of acceptors and donors, using a magnesium‐lanthanum mixed oxide, a strong solid base. The best solvent for the reaction is dimethylformamide, but good yields were also obtained using toluene as solvent. The results obtained with magnesium‐lanthanum are comparable to those reported for super bases. The catalyst can be separated from the reaction mixture and recycled five times without loss of activity with no other treatment.