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|Title:||Formation of N-methylated cyclic ligand systems from unusual reactions between trimethylamine N-oxide and acetylenes on Fe3Te2(CO)(9) and contrast with reactions on Fe3E2(CO)(9) (E = S, Se)|
|Publisher:||AMER CHEMICAL SOC|
|Citation:||ORGANOMETALLICS, 27(19), 5094-5098|
|Abstract:||Activation of C-H bonds of N-methyl groups has been achieved on cluster support. Use of a noncoordinating solvent in the reaction of Me3NO center dot 2H2O, acetylenes, and Fe3Te2(CO)(9) leads to activation of N-methyl groups of Me3NO and formation of N,N-dimethyldihydropyrrole (1) and N,M-dimethyl-hexahydropyrimidine (2) ring systems. The NMe3 ligand, resulting from TMNO, is retained on the metal cluster due to the absence of a coordinating solvent and reacts with incoming acetylenes. In contrast, activation of the N-methyl groups Of Me3NO is not observed in the reaction using Fe3S2(CO)(9), which yields complexes with vinylferrocene (3) and 1,4-diferrocenylbuta-1,3-diene-2,3-dithio (4) units attached to Fe2S2(CO)(6). All new compounds have been structurally characterized by single-crystal X-ray diffraction studies.|
|Appears in Collections:||Article|
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