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Magnesium‐Lanthanum Mixed Metal Oxide: a Strong Solid Base for the Michael Addition Reaction
Author(s) -
Veldurthy Bhaskar,
Clacens Jean Marc,
Figueras François
Publication year - 2005
Publication title -
advanced synthesis and catalysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.541
H-Index - 155
eISSN - 1615-4169
pISSN - 1615-4150
DOI - 10.1002/adsc.200404371
Subject(s) - lanthanum , chemistry , magnesium , michael reaction , dimethylformamide , lanthanum oxide , solvent , inorganic chemistry , toluene , catalysis , mixed oxide , base (topology) , oxide , metal , organic chemistry , mathematical analysis , mathematics
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.