The Preparation of Aromatic Acids by Liquid Phase Oxidation

Emerson, William S.; Lucas, Victor E.; Heimsch, Robert A.

doi:10.1021/ja01173a056

Cited by 20 publications

(5 citation statements)

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“…Oxygen at atmospheric pressure is blown through the solution in the presence of the acetates of cobalt, lead, and manganese for approximately 6 hours at 140°t o 160°C. The acids are essentially pure (33). Ethyl-substituted aromatics reacted more readily and with higher yield than those with methyl substitutes.…”

Section: Aromatic Hydrocarbonsmentioning

confidence: 94%

Oxidation

Marek¹

1950

Ind. Eng. Chem.

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Section: Aromatic Hydrocarbonsmentioning

confidence: 94%

Oxidation

Marek¹

1950

Ind. Eng. Chem.

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“…Further oxidation of the decomposition products of the hyroperoxide leads to benzoic acid at the end in all cases. The further oxidation is favoured 46 when it is carried out at temperatures of 150°C in butanoic acid as solvent. It must be established that in the case of ethylbenzene, the further oxidation of acetophenone takes place very slowly compared to the oxidation of the starting hydrocarbon so that higher yields of acetophenone can be obtained 47,48 .…”

Section: Oxidation Of Monoalkylbenzenementioning

confidence: 99%

Oxidation of Alkylaromatics

Rao

Awasthi

2006

Journal of Chemistry

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Hydroperoxide atα-position to the aromatic ring is the primary oxidation product formed. In all cases monoalkylbenzenes lead to the formation of benzoic acid. Oxidation in the presence of transition metal salts not only accelerate but also selectively decompose the hydroperoxides. Alkyl naphthalenes mainly produce the corresponding naphthalene carboxylic acids. Hock-rearrangement by the influence of strong acids converts the hydroperoxides to hemiacetals. Peresters formed from the hydroperoxides undergo Criegee rearrangement easily. Alkali metals accelerate the oxidation while CO2as co-oxidant enhances the selectivity. Microwave conditions give improved yields of the oxidation products.

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“…In this study, following on from some research studies about the methyl group on a benzene ring being oxidized by nitric acid to the carboxyl group, 39,40 we describe a new oxidative degradation procedure that converts polystyrene plastics into useful organic compounds by nitric acid under mild reaction conditions and no additional catalysts are required. Nitric acid is an inexpensive oxidant that can achieve remarkable selectivity and is extensively used in industrial production for the synthesis of fine chemicals.…”

Section: Introductionmentioning

confidence: 99%