Transformation of the carboxyl group adjacent to the (#eta#~4-diene)Fe(CO)_3 moiety: a convenient route to (#eta#~4-diene)Fe(CO)_3 complexes containing #alpha#,#beta#- and #alpha#,#beta#- and #alpha#,#gamma#-unsaturated carbonyl groups, and 1,3-dicar

摘要

acyl halides adjacent to an (#eta#~4-diene)Fe(CO)_3 moiety reach with allylsilanes, vinylsilanes and enamines to give the corresponding allyl ketones, vinyl ketones and 1,3-diketones in high yields, respectively. The allylation reaction proceeds smoothly under neutral conditions without a Lewis acid as an activating agent, while the vinylation reaction takes place in the presence of a Lewis acid.