Patent ID: 7928031

Claim:
A catalyst composition formed by combining an organic ionic liquid with an indium(III) halide, wherein the ionic liquid comprises a pyridazinium, pyrazinium, pyrimidinium, oxazolium, triazolium, pyrrolidinium or a piperidinium salt, wherein the pyrrolidinum or piperidinium salt selected from the following formula: wherein R a and R g are independently selected from a C 1 to C 40 linear or branched alkyl or a C 3 to C 8 cycloalkyl group, wherein said alkyl or cycloalkyl group is substituted by one to three groups selected from C 1 to C 6 alkoxy, C 6 to C 10 aryl, C 1 to C 30 aralkyl and C 1 to C 30 alkaryl; wherein each R b , R c , R d , R e and R f can be the same or different and are each independently selected from H or any of the R a groups as defined above; and [A] − represents a halide anion.