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Effets de sels dans la reaction de trialkylaluminium avec le benzaldehyde

Authors
Journal
Journal of Organometallic Chemistry
0022-328X
Publisher
Elsevier
Publication Date
Volume
70
Issue
3
Identifiers
DOI: 10.1016/s0022-328x(00)83363-x

Abstract

Abstract Tetra-n-butylammonium halides and, to a lesser extent alkali fluorides, enhance the addition/reduction ratio in the reaction of trialkylaluminium with benzaldehyde in ether, and lower the reactivity of the organoaluminium compounds. These results are consistent with the existence of complexes between salts and organoaluminium compounds [MX•R 3 Al (1/1) and MX•2R 3 Al (1/2)]. The more stable the complex, the more important are the effects I − ⪡ Br − ⪡ Cl − ⪡ F − and NaF ⪡ KF ⪡ Bu 4 NF. The 1/1 complexes are more stable and less reactive than their corresponding 1/2 complexes.

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