期刊
ADVANCED SYNTHESIS & CATALYSIS
卷 347, 期 6, 页码 767-771出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/adsc.200404371
关键词
basic catalysis; magnesium-lanthanum mixed oxide; Michael additions; recyclability; solvent effects
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.
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