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Lookup NU author(s): Emeritus Professor Bill CleggORCiD,
Dr Stephen Liddle
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Reaction of methylaluminium bis(2,6-di-tert-butyl-4-methylphenoxide) (MAD), 1, with alkyllithium reagents, R′Li (R′=Me, n-Bu or t-Bu), yields the solvent-dependent products lithium bis(2,6-di-tert-butyl-4-methylphenoxide)-THF complex, 2·THF, lithium dimethylbis(2,6-di-tert-butyl-4-methylphenoxide)aluminate, 3, a new type of lithium aluminate in which the lithium centre is stabilised by very short agostic LiH(t-Bu) interactions, and tris(alkyl)aluminium. The observation of these products suggests an explanation for the tendency of α,β-unsaturated ketones to undergo conjugate (rather than 1,2-) addition in the presence of MAD and organolithium reagents.
Author(s): Clegg W, Lamb E, Liddle ST, Snaith R, Wheatley AEH
Publication type: Article
Publication status: Published
Journal: Journal of Organometallic Chemistry
Print publication date: 31/01/1999
ISSN (print): 0022-328X
ISSN (electronic): 1872-8561
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