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Vanadyl Salen Complexes Covalently Anchored to an Imidazolium Ion as Catalysts for the Cyanosilylation of Aldehydes in Ionic Liquids by Carlos Baleizão; Bárbara Gigante; Hermenegildo Garcia; Avelino Corma is a Chemistry article available to read on EtoBox.

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Two vanadyl salen complexes having peripheral styryl substituents have been reacted with 1-methyl-3-(3-mercaptopropyl)-imidazolium chloride using azoisobutyronitrile as radical initiator. The resulting compounds contain at the same time a vanadyl salen complex and one imidazolium cation. In agreement with the expectations in view of their structure, these compounds were insoluble in conventional organic solvents, but completely miscible in imidazolium ionic liquids. These vanadyl salen complexes bonded to an imidazolium cation are highly active and reusable catalysts for the cyanosilylation of aldehydes. Moderate enantiomeric excesses were obtained using the chiral version of this complex.

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Author

Carlos Baleizão; Bárbara Gigante; Hermenegildo Garcia; Avelino Corma

Publisher

Elsevier Science; Elsevier ; Elsevier Ltd.; Elsevier BV (ISSN 0040-4039)

Published

2003

Language

EN

Field

Chemistry (Physical Sciences)