M. Franckneumann et al., INTRAMOLECULAR FRIEDEL-CRAFTS ACYLLATIONS OF 1-ALKANOIC AND 2-ALKANOIC ACID DIENE TRICARBONYLIRON COMPLEXES, Tetrahedron letters, 37(48), 1996, pp. 8763-8766
Upon treatment with AlCl3, the acid chlorides of tricarbonyl [isoprene
-4-butanoic acid] iron and of tricarbonyl [butadiene-2-propanoic acid]
iron yield five membered cyclic ketones containing a portion of the m
etal bound diene. The intramolecular acylation is the main reaction. C
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