Preparation of aromatic carbonyl compounds

Details Preparation of aromatic carbonyl compounds Preparation of aromatic carbonyl compounds

C - Chemistry, Metallurgy

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C

260/577, 260/177

C07C 45/45 (2006.01) C07C 45/46 (2006.01) C07C 45/47 (2006.01) C07C 49/76 (2006.01) C07C 49/813 (2006.01) C07C 49/84 (2006.01) C07C 51/58 (2006.01)

Patent

CA 1273020

PREPARATION OF AROMATIC CARBONYL COMPOUNDS 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 bet- ween a Lewis acid; for example, aluminum trichloride, and a Lewis base, for example, N,N-dimethylformamide, and, optionally, a diluent, such as methylene chloride. The pro- cess 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.

492718

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