Darstellung,Eigenschaften sowie Reaktionen metallhaltiger Heterocyclen. LXVI. Nickelinduzierte Cyclocodimerisierung eines Thioxophosphor(V)-Kations mit einem aktivierten Alkin |
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Authors: | E Lindner A Nothdurft |
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Abstract: | Metall Containing Heterocycles: Preparation, Properties, Reactions. LXVI. Nickel Induced Cyclocodimerization of a Thioxophosphorus (V) Cation with an Activated Alkyne The action of di-tert-butylthioxophosphorane (t-Bu)2P(H)S on nickelocene in ether results in the formation of the first kinetically stabilized (η2-diorganothioxophosphorus)nickel complex (η5-C5H5)Ni(η2-S?P(t-Bu)2)] ( 1 ). In presence of the acetylene dicarboxylic acid dimethyl ester H3CO2CC? CCO2CH3 with (t-Bu)2P?S a cyclocodimerization occurs with formation of the S and P isomeric thiaphosphanickelacyclopentadiene (η5-C5H5) ( 2S ) and thiaphosphanickelacyclopentene (η5-C5H5) ( 2P ) (R?CO2CH3), respectively. The composition and structure of the compounds 1, 2S , and 2P were determined from the mass, IR, and NMR spectra. |
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