Transition metal heterocyclic chemistry. IX. An α-selenoketoketene. Trapping subsequent to oxidative release from tricarbonyliron complexes to form vinyl selenides

Article abstract of DOI:10.1016/0022-328X(88)80643-0

Treatment of α-selenoketocyclohexylene-Fe2(CO)6 (1) and the related α-selenoketoketene complex (2) with trimethylamine oxide leads to the formation of a transient α-selenoketoketene, a previously unknown species.The transient species may be trapped by alcohols to produce esters of bis(2-carboxy-1-cyclohexenyl)diselenide, examples of vinylselenides.Reductive elimination of selenium from these esters using Raney Nickel leads to the formation of the cyclohexane carboxylate esters.