A solvent-free synthesis of α,α′-bis(substituted benzylidene) cycloalkanones catalyzed by lanthanide amides [(Me3Si)2N]3Ln(µ-Cl)Li(THF)3 under microwave irradiation
- 1 January 2005
- journal article
- Published by Royal Society of Chemistry (RSC) in Green Chemistry
- Vol. 7 (9), 683-686
- https://doi.org/10.1039/b504890g
Abstract
Under solvent-free and microwave irradiation conditions, the corresponding E,E′-α,α′-bis(substituted benzylidene) cycloalkanones were prepared in high yields by the cross-aldol reactions of cyclopentanone or cyclohexanone with aromatic aldehydes catalyzed by the lanthanide amides [(Me3Si)2N]3Ln(μ-Cl)Li(THF)3. The reactions produce the products in relatively low yields and require a long time when they were performed in various solvents without microwave irradiation. Thus, the procedure provides a simple and a green synthetic methodology.Keywords
This publication has 50 references indexed in Scilit:
- Lanthanide metallocenes in homogeneous catalysisPublished by Springer Nature ,2005
- Enantiomerically Pure Organolanthanides for Asymmetric Catalysis. Synthesis, Structures, and Catalytic Properties of Complexes Having Pseudo-meso-Me2Si(η5-C5H3R)(η5-C5H3R*) Ancillary LigationOrganometallics, 1997
- Iso-specific Ziegler-Natta polymerization of .alpha.-olefins with a single-component organoyttrium catalystJournal of the American Chemical Society, 1992
- Chiral organolanthanide complexes for enantioselective olefin hydrogenationJournal of the American Chemical Society, 1992
- Scandium complex [{(.eta.5-C5Me4)Me2Si(.eta.1-NCMe3)}(PMe3)ScH]2: a unique example of a single-component .alpha.-olefin polymerization catalystOrganometallics, 1990
- Carbon-carbon bond activation via .beta.-alkyl elimination. Reversible branching of 1,4-pentadienes catalyzed by scandocene hydride derivativesJournal of the American Chemical Society, 1988
- Highly reactive organolanthanides. A mechanistic study of catalytic olefin hydrogenation by bis(pentamethylcyclopentadienyl) and related 4f complexesJournal of the American Chemical Society, 1985
- Organolanthanides in catalysisAccounts of Chemical Research, 1985
- Organolanthanide hydride chemistry. 3. Reactivity of low-valent samarium with unsaturated hydrocarbons leading to a structurally characterized samarium hydride complexJournal of the American Chemical Society, 1983
- Ziegler-Natta polymerization: the lanthanide modelJournal of the American Chemical Society, 1982