SYNTHESIS OF BIS(ACYL)PHOSPHINES BY ACTIVATION OF UNREACTIVE METAL PHOSPHIDES

摘要

The present invention refers to a process for the preparation of a mono(acyl)phosphine of the general formula (I) and/or a bis(acyl)phosphine of the general formula (II), wherein R₁, R₂, R₃, R₄ and R₅ are the same or different and are independently selected from H, halogen, linear or branched C₁-C₂₀-alkyl, linear or branched C₂-C₈-alkenyl, C₁-C₈-alkoxy, C₂-C₈-alkenyloxy, C₃-C₈-cycloalkyl, C₆-C₁₂-aryl, C₃-C₈-cycloalkoxy, C₇-C₁₂-arylalkoxy, C₉-C₁₅-alkenylarylalkoxy, nitro-, C₆-C₁₂-arylsulfonyl, 4-alkylaryl-sulfonyl, C₁-C₂₀-alkylcarboxy, C₁-C₈-alkoxycarbonyl, SR₁₄, NIIR₁₄ or NR₁₄R₁₅ with R₁₄ and R₁₅ being independently selected from H, linear or branched C₁-C₂₀-alkyl, linear or branched C₂-C₈-alkenyl and C₃-C₈-cycloalkyl, and an O-, S- or N-containing 5-or 6-membered heterocyclic ring; R₆ is H or R₆ is replaced by an alkaline earth metal cation or a mixed alkali metal/alkaline earth metal cation; Formula (II) wherein R₁, R₂, R₃, R₄, R₅, R₇, R₈, R₉, R₁₀ and R₁₁ are the same or different and are independently selected from H, halogen, linear or branched C₁-C₂₀-alkyl, linear or branched C₂-C₈-alkenyl, C₁-C₈-alkoxy, C₂-C₈-alkenyloxy, C₃-C₈-cycloalkyl, C₆-C₁₂-aryl, C₃-C₈-cycloalkoxy, C₇-C₁₂-arylalkoxy, C₉-C₁₅-alkenylarylalkoxy, nitro-, C₆-C₁₂-arylsulfonyl, 4-alkylarylsulfonyl, C₁-C₂₀-alkylcarboxy, C₁-C₈-alkoxycarbonyl, SR₁₄, NHR₁₄ or _NR14R₁₅ with R₁₄ and R₁₅ being independently selected from H, linear or branched C₁-C₂₀-alkyl, linear or branched C₂-C₈-alkenyl and C₃-C₈-cycloalkyl, and an O-, S- or N- containing 5- or 6-membered heterocyclic ring; as well as the mono(acyl)phosphine and/or bis(acyl)phosphine obtained by the process.;