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- W2043924508 abstract "Abstract Les sels de vinylene-1,2- et butadienylene-1,4-bisphosphoniums, o[ugrave] le phosphore est porteur des groupes labiles benzyle, cyano-2 ethyle, allyle ou phenyle, ont ete synthetises par reaction des phosphines tertiaires correspondantes avec le bromure d′acetyle ou de vinylacetyle. Lorsque ces sels sont traites par l′aluminohydrure de lithium, par des alcoolates ou des cyanures alcalins, l′encha[icaron]nement insature entre les deux atomes de phosphore est rompu selectivement, pour fournir une ou plusieurs phosphines tertiaires. Un mecanisme reactionnel a ete propose et discute pour chaque type de rupture: avec les ions alcoolate et cyanure, en particulier, la reaction correspond a la formation intermediaire d′ethynylphosphonium qui evolue vers les produits finaux. 1,2-vinylene- and 1,4-butadienylene-bisphosphonium salts with labile groups on phosphorus (e.g. benzyl, 2-cyanoethyl, allyl or benzyl) are synthetized in the reaction of the corresponding tertiary phosphines with acetyl- or vinylacety..." @default.
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- W2043924508 date "1983-06-01" @default.
- W2043924508 modified "2023-09-25" @default.
- W2043924508 title "SYNTHESE ET REDUCTION CHIMIQUE DE SELS DE VINYLENE-1,2 ET BUTADIENYLENE-1,4 BISPHOSPHONIUMS" @default.
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- W2043924508 doi "https://doi.org/10.1080/03086648308073315" @default.
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