Organic compounds -- part of the class 532-570 series – Organic compounds – Oxygen containing
Patent
1991-03-14
1992-08-11
Reamer, James H.
Organic compounds -- part of the class 532-570 series
Organic compounds
Oxygen containing
568319, 568324, C07C 4545, C07C 4580
Patent
active
051380986
ABSTRACT:
A regioselective acylation process is provided for coverting a 2-methylnaphthalene compound to a 2-acetyl-6-methylnaphthalene compound. The process is conducted under liquid phase conditions in an acylation inert solvent using a complexing agent which is regiospecific for the beta position of naphthalene and which is a thermally stable nitrohydrocarbon compound. Preferred such agents are nitrobenzene, o-nitrotoluene, and mesitylene. Also provided is a novel method for producing a 2-acetyl-6-methylnaphthalene compound of relatively 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: 4868338 (1989-09-01), Magni et al.
Maki et al., Chem. Abst., vol. 107, #154,0882 (1987).
Hagen Gary P.
Schmidt Gregory E.
Smith Thomas G.
Weis John M.
Amoco Corporation
Magidson William H.
Nemo Thomas E.
Reamer James H.
Sroka Frank J.
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