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- W2041940406 abstract "The addition of lithium salts of 1,1′-ferrocene dithiol and diselenol to propynoates give exclusively β-substituted propenoates with predominant (Z,Z)-configuration: Fe(C5H4EC(R)=CHCO2C2H5)2 (E = S, Se, R = H, C6H5). The ester group can be converted sequentially into acid and acid chloride without modification of the configuration. Aluminium trichloride reacts with 1,1′-ferrocenyldi-4-chalcogenabutenoyl chloride (Z,Z) leading to ortho-cyclisation products (E = S) and a rearrangement product (E = Se). L'addition des sels de lithium des ferrocènes 1-1′ dithiol et disélénol à des propynoates conduit exclusivement à des propénoates β-substitués de configuration (Z,Z) préférentielle. La fonction ester peut être transformée successivement en acide puis chlorure d'acide sans modification de la configuration. Les chlorures de ferrocényl 1,1′-dichalcogéna-4 buténoyle (Z,Z) réagissent avec le trichlorure d'aluminium pour donner des produits de cyclisation ortho (E = S) et un produit de réarrangement (E = Se)." @default.
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- W2041940406 date "1991-05-01" @default.
- W2041940406 modified "2023-09-26" @default.
- W2041940406 title "Synthèse de ferrocènes hétérodichalcogénés à chaînes ouvertes ou pontantes par addition de Fe(C5H4ELi)2 · 2THF (E = S, Se) a des propynoates" @default.
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- W2041940406 doi "https://doi.org/10.1016/0022-328x(91)83209-m" @default.
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