Abstract
The use of an equimolar amount of BF3.Et20 as activating agent proved to be an useful improvement in the synthesis of a variety of pentacarbonyl(2-oxacyclopentylidene)chromium complexes (3a-f) through the ring opening of oxiranes by the conjugate base of the pentacarbonyl(methoxymethylcarbene)chromium complex (1); oxidation of (3a-f) with CeIV leads to the corresponding γ-lactones. The extension of the above reactions to oxetane allowed the synthesis of the new pentacarbonyl(2-oxacyclohexylidene)chromium complex. It is noteworthy that the oxetane ring opening occurs only in the presence of BF3.Et20.
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References
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© 1989 Kluwer Academic Publishers
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Lattuada, L., Licandro, E., Maiorana, S., Papagni, A. (1989). Opening of Oxirane and Oxetane Rings by the Conjugate Base of the Pentacarbonyl (Methoxymethyl) Chromium Complex in the Presence of BF3.Et2O. In: Schubert, U. (eds) Advances in Metal Carbene Chemistry. NATO ASI Series, vol 269. Springer, Dordrecht. https://doi.org/10.1007/978-94-009-2317-1_17
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DOI: https://doi.org/10.1007/978-94-009-2317-1_17
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