Friedel-crafts preparation of aromatic ketones with an inoganic

Details Friedel-crafts preparation of aromatic ketones with an inoganic Friedel-crafts preparation of aromatic ketones with an inoganic

1990-07-06

1991-11-26

Lee, Mary C.

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

Organic compounds

Oxygen containing

568315, 568322, 568323, 568325, 568333, 534588, 534598, 549 43, 549433, 549234, C07C10706, C07C 49813

Patent

active

050684477

ABSTRACT:
Aromatic carbonyl compounds, in particular arylene ether ketones, are prepared by reacting an appropriate reagent system in the presence of free Lewis acid and a complex between a Lewis acid, for example, aluminum trichloride, and an inorganic salt controlling agent, for example, lithium chloride, and, optionally, a diluent, such as methylene chloride. The process is particularly advantageous for the preparation of substantially or all para-linked arylene ether ketones as the presence of the Lewis acid/Lewis base complex markedly reduces alkylation and ensures the substantial absence of ortho substitution.

REFERENCES:
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patent: 3282989 (1966-01-01), Renckoff et al.
patent: 4814508 (1989-03-01), Gors et al.
Olah, "Friedel-Crafts and Related Reactions," vol. I, Interscience Publishers, Inc. N.Y., pp. 91-109, 120, 122-123, and 212-304 (1963).

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