Thermal reaction of iron aminocarbene complexes bearing aromatic substituen
t (CO)(4)Fe=(Ar)N(CH3)(2) with methyl acrylate, acrylonitrile and methyl vi
nyl ketone furnishes 1,4-dicarbonyl compounds - formal products of Michael
addition of an acyl anion and the alkene. Nonactivated, di- and trisubstitu
ted alkenes are unreactive under the same conditions. (C) 2001 Elsevier Sci
ence B.V. All rights reserved.