Assembly and incorporation of a CO2Me group into a bridging vinyliminium ligand in a diiron complex

作者：Renili Filippo; Marchetti Fabio; Zacchini Stefano; Zanotti Valerio^*

来源：Journal of Organometallic Chemistry, 2011, 696(7): 1483-1486.

DOI：10.1016/j.jorganchem.2011.01.011

• Vinyliminium
• Diiron complexes
• Hydrocarbyl ligands
• C-C bond formation

The diiron complex [Fe-2{mu-K-1(O):eta(1)(C):eta(3)(C)-C(N(Me)(Xyl))C(H)=C(Me)C(O)OMe}(mu-CO)(Cp)(2)] (2) has been obtained from the diiron bridging vinyliminium [Fe-2{mu-eta(1):eta(3)-C(Me)=C(H)C=N(Me)(Xyl)}(mu-CO) (CO)(Cp)(2)][SO3CF3] (1; Xyl = 2,5-C6H3Me2) upon treatment with NaH in the presence of CH2=C=CMe2, followed by chromatography on alumina with MeOH as eluent. The reaction consists in the incorporation of a methylcarboxylate unit, assembled from CO and MeO-, into the bridging vinyliminium ligand. The resulting complex 2 exhibits a C-4 fragment bridging the two iron centres through the carbonyl oxygen atom and the allylidene moiety.
The X-ray molecular structure of 2 has been determined.

• 出版日期2011-4-1