Cobalt(II) chloride catalysed condensation of acetoacetate with enolisable aldehydes

Iqbal, Javed ; Srivastava, Rajiv Ranjan (1991) Cobalt(II) chloride catalysed condensation of acetoacetate with enolisable aldehydes Tetrahedron Letters, 32 (13). pp. 1663-1666. ISSN 0040-4039

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Official URL: http://linkinghub.elsevier.com/retrieve/pii/S00404...

Related URL: http://dx.doi.org/10.1016/S0040-4039(00)74299-7

Abstract

Enolisable aldehydes and methyl acetoacetate react in the presence of cobalt(II) chloride (catalytic) to give the corresponding α,β-unsaturated carbonyl compound in excellent yields. Non enolisable aldehydes do not react under these conditions. A catalytic cycle for these reactions has been proposed by involving the intermediacy of a cobalt(III) enol complex of aldehyde.

Item Type:Article
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ID Code:17019
Deposited On:16 Nov 2010 13:08
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