Journal of Organometallic Chemistry p. 357 - 368 (1997)
Update date:2022-08-04
Topics:
Robin-Le Guen
Senechal-Tocquer
Senechal
Caro
Diacetylation of benehrotrenic alkenes by acetic anhydride and weak Lewis acid (ZnCl2, BF3-OEt2) is reported. A series of γ-benchrotrenic pyrylium salts is obtained together with the mono and the diacetylated products. The first organometallic fused rings pyrylium salts are obtained. In connection with the electron donating effect of the Cr (CO)3 group, the influence of rings deconjugation on NMR data is discussed. Finally the reaction of acyclic and cyclic γ-benchrotrenic pyrylium salts with nucleophiles is described.
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