FRIEDEL-CRAFTS ALKYLATIONS OF FERROCENE WITH UNSATURATED LACTONES, SOME UNUSUAL REACTIONS CAUSED BY THE Β-FERROCENYLCARBENIUM ION

Article abstract of DOI:10.1016/0022-328X(87)80229-2

Friedel-Crafts alkylations of ferrocene with 5- and 6-membered unsaturated lactones have been studied.The expected alkylation products were isolated in the case of 5-membered lactones, while several products such as unsaturated ferrocenyllactones, ferrocenyldiketones as well as ferrocenylhydroxylactones were isolated in the case of 6-membered lactones. β-Ferrocenylcarbenium ion was suggested to be the key intermediate in this case.