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Acetylferrocene can be converted to many derivatives, e.g., reduction to the chiral alcohol (C 5 H 5)Fe(C 5 H 4 CH(OH)Me) and precursor to vinylferrocene. The oxidized derivative, acetyl ferrocenium , is used as a 1e-oxidant in the research laboratory.
Ferrocene analogues can be prepared with variants of cyclopentadienyl. For example, bisindenyliron and bisfluorenyliron. [58] Various ferrocene derivatives where cyclopentadienyl has been replaced by related ligands. Carbon atoms can be replaced by heteroatoms as illustrated by Fe(η 5-C 5 Me 5)(η 5-P 5) and Fe(η 5-C 5 H 5)(η 5-C 4 H 4 N ...
Space-filling model of ferrocene, the archetypal sandwich compound. In organometallic chemistry, a sandwich compound is a chemical compound featuring a metal bound by haptic, covalent bonds to two arene (ring) ligands. The arenes have the formula C n H n, substituted derivatives (for example C n (CH 3) n) and heterocyclic derivatives (for ...
Ferrocenecarboxaldehyde, owing to the versatility of the formyl group, is a precursor to many ferrocene-modified compounds. With a Wittig reagent, it converts to vinylferrocene and related derivatives. [5] With primary amines, ferrocenecarboxaldehyde condenses to give imines. The azomethine derivative undergoes 1,3-cycloaddition to C 60. [6]
Synthesis of compound 1 A 10-ferrocene dendrimer. Dendrimers with ferrocene cores have been synthesized by decorating suitably functionalized ferrocenes, e.g., decaallylferrocene. [1] Synthesis of compound 1. synthesis Ferrocene-containing dendrimers can be synthesized by convergence and diffusion methods.
A major factor in determining the reactivity of acyl derivatives is leaving group ability, which is related to acidity. Weak bases are better leaving groups than strong bases; a species with a strong conjugate acid (e.g. hydrochloric acid) will be a better leaving group than a species with a weak conjugate acid (e.g. acetic acid).
The Bogert–Cook synthesis (1933) involves the dehydration and isomerization of 1-β-phenylethylcyclohexanol to the octahydro derivative of phenanthrene [23] The Darzens–Nenitzescu synthesis of ketones (1910, 1936) involves the acylation of cyclohexene with acetyl chloride to methylcyclohexenylketone.
The indenyl analogues of ferrocene, which is orange, and cobaltocenium cation were first reported by Pauson and Wilkinson. [3] The cobalt derivative is a poorer reductant than cobaltocene. The indenyl effect was discovered by Hart-Davis and Mawby in 1969 through studies on the conversion of (η 5 -C 9 H 7 )Mo(CO) 3 CH 3 to the phosphine ...