Patent ID: 6995293
Filing Date: 2006-02-07
Classification: C07C

Abstract:
1. A method for the production of aldehydes comprising reacting a member selected from the group consisting of mono-olefins, conjugated and nonconjugated polyolefins, cycloolefins and derivatives thereof, with carbon monoxide and hydrogen at a temperature of 20 to 150° C. and a pressure of 0.1 to 20 MPa in the presence of a nonaqueous ionic liquid of the formula (Q ⊕ ) a A a− and at least one rhodium compound and at least one sulfonated arylphosphine, wherein Q ⊕ is a singly charged ammonium cation, which may be substituted by organic groups, or the equivalent of a multiply charged ammonium cation, which may be substituted by organic groups, and A a− is an organic sulfonate or organic sulfate of the formula wherein R 1 and R 2 are independently selected from the group consisting of alkyl of 1 to 20 carbon atoms, alkylaryl of 7 to 20 carbon atoms, an aryl of 6 to 14 carbon atoms, cycloalkyl of 3 to 7 carbon atoms and aralkyl of 7 to 20 carbon atoms; or R 1 has the formula wherein R 3 is selected from the group consisting of alkyl of 1 to 20 carbon atoms, alkylaryl of 7 to 20 carbon atoms, aryl of 6 to 14 carbon atoms, cycloalkyl of 3 to 7 carbon atoms and aralkyl of 7 to 20 carbon atoms, n is an integer from 2–12 and m is an integer 1–100; and a is an integer and represents the number of the sulfones or sulfates bound to the organic radical and is at least equal to 1.