Process for producing alkylnaphthalenes

Details Process for producing alkylnaphthalenes Process for producing alkylnaphthalenes

1974-10-08

1976-10-12

Gantz, Delbert E.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260668A, 260668F, 260671C, 260671P, 260672T, 260674N, C07C 356, C07C 1524

Patent

active

039858197

ABSTRACT:
A process for producing alkylnaphthalenes by alkylating naphthalene with an olefin having 2 to 4 carbon atoms, which comprises (1) introducing the olefin into a solution of crude naphthalene containing thianaphthene as an impurity in a solvent having a boiling point sufficiently different from the boiling point of the naphthalene and alkylnaphthalenes produced that the solvent is separable by distillation in the presence of (i) an aluminum chloride complex consisting of (a) aluminum chloride, (b) hydrogen chloride and (c) an alkylated benzene or naphthalene, or (ii) a solid aluminum chloride which is dissolved into the reaction solution by adding gaseous hydrogen chloride simultaneously with or prior to the introducing of the olefin, (2) aging the reaction solution, and (3) recovering the resulting alkylnaphthalenes, whereby alkylnaphthalenes, containing as monoalkylnaphthalenes a predominant amount of a .beta.-monoalkylnaphthalene, are obtained in a high yield.

REFERENCES:
patent: 1667214 (1928-04-01), Michel
patent: 2541882 (1951-02-01), Moore

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