Regioselective preparation of .beta.-isopropylnaphthalene over s

Details Regioselective preparation of .beta.-isopropylnaphthalene over s Regioselective preparation of .beta.-isopropylnaphthalene over s

1979-10-05

1981-09-08

Davis, Curtis R.

Chemistry of hydrocarbon compounds

Aromatic compound synthesis

By condensation of entire molecules or entire hydrocarbyl...

585471, C07C 266

Patent

active

042886465

ABSTRACT:
A process for the production of .beta.-isopropylnaphthalene in high regioselectivity (90-98%) by alkylation of naphthalene over solid or supported superacid catalysts, such as a perfluorinated alkanesulfonic acid of four to eighteen carbon atoms (C.sub.4 F.sub.9 SO.sub.3 H to C.sub.18 F.sub.37 SO.sub.3 H) or a polymeric perfluorinated resin-sulfonic acid, such as the acid form of the commercially available Nafion-K ion-membrane resin (DuPont). Further isomerization of mixtures of isomeric isopropylnaphthalenes to preferentially pure .beta.-isopropylnaphthalene can also be effected.

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