Diolefin dimerization using nitrosyl halides of iron triad metals
AssigneePhillips Petroleum Company
InventorDaniel J. Strope
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Abstract
Nitrosyl halides of iron and cobalt are prepared by reacting dihalides of iron and cobalt with alkali metal nitrite. Nitrosyl halides of nickel are prepared by reacting nickel dihalide with alkali metal nitrite and nickel or zinc powder. The production of ligand-containing nitrosyl halides of iron, cobalt and nickel is also disclosed. Also disclosed is diolefin dimerization using a nitrosyl halide and elemental manganese, zinc or tin.
Claims27
A process for the dimerization of at least one conjugated diolefin comprising contacting said at least one diolefin under dimerization conditions with a catalytic amount of a catalyst formed on admixing components consisting essentially of (1) at least one elemental metal selected from the group consisting of manganese, tin, and zinc with (2) at least one nitrosyl metal halide selected from the group consisting of nitrosyl metal halides having the formulas [Fe(NO).sub.2 X].sub.y, [Co(NO).sub.2 X].sub.y, [Ni(NO)X].sub.y, Fe(NO).sub.2 (L)X, Ni(NO)(L)X, and Co(NO).sub.2 (L)X, wherein X is selected from the group consisting of chloride, bromide, and iodide, y is 1 or 2 for Co or Fe and 1,2,3 or 4 for Ni, and wherein (L) is selected from the group of compounds having the formulas
- R.sub.3 M, (RO).sub.3 M, SR', R--S--R, R.sub.3 MO, OR', and R--O--R
- wherein each R is individually selected from the group consisting of hydrocarbyl aromatic radicals, hydrocarbyl aliphatic radicals, halo-substituted hydrocarbyl aromatic radicals, halo-substituted aliphatic hydrocarbyl radicals, alkoxy-substituted hydrocarbyl aromatic radicals and alkoxy-substituted aliphatic hydrocarbyl radicals having up to about 20 carbon atoms, wherein R' is a divalent saturated or olefinically unsaturated hydrocarbyl radical having 3 to 7 carbon atoms, and wherein M is phosphorus, antimony, or arsenic.
A method for the dimerization of at least one conjugated diolefin consisting essentially of contacting under dimerization conditions at least one elemental metal selected from the group consisting of manganese, tin, and zinc with an admixture of said at least one conjugated diolefin and at least one nitrosyl metal halide selected from the group consisting of nitrosyl metal halides having the formula [Fe(NO).sub.2 X].sub.y, [Co(NO).sub.2 X].sub.y, [Ni(NO)X].sub.y, Fe(NO).sub.2 (L)X, Ni(NO)(L)X, and Co(NO).sub.2 (L)X, wherein X is selected from the group consisting of chloride, bromide, and iodide, y is 1 or 2 for Co or Fe and 1, 2, 3 or 4 for Ni, and wherein (L) is selected from the group of compounds having the formulas
- R.sub.3 M, (RO).sub.3 M, SR', R--S--R, R.sub.3 MO, OR', and R--O--R
- wherein each R is individually selected from the group consisting of hydrocarbyl aromatic radicals, hydrocarbyl aliphatic radicals, halo-substituted hydrocarbyl aromatic radicals, halo-substituted aliphatic hydrocarbyl radicals, alkoxy-substituted hydrocarbyl aromatic radicals and alkoxy-substituted aliphatic hydrocarbyl radicals having up to about 20 carbon atoms, wherein R' is a divalent saturated or olefinically unsaturated hydrocarbyl radical having 3 to 7 carbon atoms, and wherein M is phosphorus, antimony, or arsenic.
Dependencies are inferred from the claim text.