109864-36-0Relevant academic research and scientific papers
Reaction of diiron μ-alkylidyne complexes with diazo compounds
Casey, Charles P.,Austin, Edwin A.,Rheingold, Arnold L.
, p. 2157 - 2164 (2008/10/08)
The reaction of μ-methylidyne complex [(C5H5)(CO)Fe]2(μ-CO)(μ-CH) +PF6- (1) with ethyl diazoacetate gave the ester-substituted μ-alkenyl complex [(C5H5)(CO)Fe]2(μ-CO)(μ-η 1,η2-CH=CHCO2Et)+PF 6- (2) in 86% yield. 1 also reacted with diazomethane, diazoethane, methyl 2-diazopropionate, and (trimethylsilyl)diazomethane to give similar μ-alkenyl products. μ-Alkenyl complex 2 reacted with the nucleophiles NEt4+[HFe(CO)4]- and lithium diethyl malonate to give the carbene complexes [(C5H5)(CO)Fe]2(μ-CO)(μ-CHCH 2CO2Et) (17) and [(C5H5)(CO)Fe]2(μ-CO)(μ-CHCH(CO 2Et)CH(CO2Et)2) (16). Reductive dimerization of 2 gave the tetrairon carbene complex {[(C5H5)(CO)Fe]2(μ-CO)(μ-CHCHCO 2Et)}2. (25). The structure of 25 was determined by X-ray crystallography, monoclinic space group P21/c, with unit cell constants a = 12.318 (2) A?, b = 16.443 (2) A?, c = 17.679 (2) A?, β = 105.20 (1)°, and Z = 4.
