Patent ID: 6846960
Filing Date: 2005-01-25
Classification: C07C

Abstract:
1. A method for reducing the fluoride content in a chemical process, wherein said chemical process is selected from the group consisting of hydroformylation, hydrogenation, isomerization, hydrocyanation, hydrosilation, cyclopropanation, telomerizations, carbon hydrogen bond activation, olefin metathesis, olefin copolymerizations, butadiene dimerization, oligomerization, butadiene polymerization, the Heck reaction and arene coupling reaction, wherein said chemical process comprises reacting a reactant mixture in the presence of a catalyst comprising one or more transition metals selected from the group consisting of Group VIII metals and rhenium, and one or more fluorophosphite compounds having the general formula wherein R 1 and R 2 are hydrocarbyl radicals which contain a total of up to about 40 carbon atoms and wherein the ratio of gram moles fluorophosphite ligand to gram atoms transition metal is at least 1:1, to produce a product containing fluoride, said method comprising introducing an additive into said reactant mixture, in an amount sufficient for the purpose of reducing the fluoride concentration in said product, wherein said additive is selected from the group consisting of (a) oxides, carboxylates, hydroxides, bicarbonates, carbonates, phosphates, citrates, borates and ascorbates, of calcium, sodium, magnesium, aluminum, zinc, silver, lithium, potassium, copper, cadmium, barium, and silicon, and mixtures thereof, and (b) talcites, hydrotalcites, molecular sieves, ion exchange resins, membranes, and mixtures thereof.