Process for selective diisopropylation of naphthyl compounds...

Details Process for selective diisopropylation of naphthyl compounds... Process for selective diisopropylation of naphthyl compounds...

C - Chemistry, Metallurgy

07

C

260/685.2

C07C 2/66 (2006.01) C07C 6/12 (2006.01) C07C 15/24 (2006.01) B01J 29/18 (2006.01)

Patent

CA 1327611

Abstract of the Disclosure The selective isopropylation of a naphthyl com- pound to diisopropylnaphthalene enhanced in the 2,6- diisopropylnaphthalene isomer is obtained in the presence of an acidic crystalline molecular sieve catalyst having twelve membered oxygen rings. The catalyst pore aperture dimension ranges from 5.5.ANG. to 7ØANG.. The use of these shape selective catalysts results in a diisopropylnaphthalene stream which is enhanced in .beta. isomers and enhanced in the desired 2,6-diisopropylnaphthalene isomer. A particularly preferred catalyst is synthetic Mordenite. Specific catalyst modifications are also described to improve selectivity to the desired 2,6-diisopropylnaphthalene isomer.

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