Preparation of 2-acyl-6-methylnaphthalenes

Details Preparation of 2-acyl-6-methylnaphthalenes Preparation of 2-acyl-6-methylnaphthalenes

1990-03-01

1991-06-25

Reamer, James H.

Organic compounds -- part of the class 532-570 series

Organic compounds

Oxygen containing

568324, C07C 4545

Patent

active

050269178

ABSTRACT:
A regioselective acetylation process is provided for converting a 2-methylnaphthalene compound to a 2-acetyl-6-methylnaphthalene compound. The process is conducted under liquid phase conditions using a new complexing agent which is regiospecific for the beta position of naphthalene and which is an electron-rich, carbon-based compound. A preferred such agent is hexamethylbenzene. Also provided is a novel method for producing a 2-acetyl-6-methylnaphthalene compound of relative high purity from isomer mixtures by recrystallization from a hydrocarbon solvent, such as n-octane, isooctane, or n-nonane.

REFERENCES:
patent: 4593125 (1986-06-01), Davenport et al.
patent: 4814508 (1989-03-01), Gors et al.
patent: 4868338 (1989-09-01), Magni et al.
patent: 4898983 (1990-02-01), Towle

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