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Dimethylbenzoic acid

Liquid-phase air oxidation of mesitylene with Co, Mn, and Bt catalysis produces 1,3,5-benzenetricarboxyhc acid [554-95-0] (trimesic acid) (10) (37) as does the oxidation with dilute nitric acid (qv). Amoco has oxidized mesitylene to trimesic acid on a small scale (see Phthalic acid and other BENZENECARBOXYLIC acids). Less vigorous stepwise oxidation of mesitylene can yield 3,5-dimethylbenzoic acid [499-06-9] (11) and 5-methyhsophthahc acid... [Pg.510]

During oxidn of mesitylene with nitric acid in an autoclave at 115° to give 3,5-dimethylbenzoic acid, a violent expln occurred. The reaction was attributed to local overheating, formation of a trinitro compd, 1,3,5-tri (nitromethyl) benzene, and to violent decompn of the latter. Smaller scale prepns with better temp control were uneventful (Ref 3)... [Pg.79]

Change in the way a reaction occurs because of inappropriate temperatures. At 20 C nitric acid converts mesitylene into 3,5-dimethylbenzoic acid without danger, but at 115°C the explosive 1,3,5-tris(nitromethyl)benzene is formed. Excessive heating of thiophosphoryl trichloride with pentaerythritol at 160°C leads to the formation of phosphine, which combusts spontaneously. [Pg.149]

The synthesis of 3,5-dimethylbenzoic acid by oxidation of mesitylene by nitric acid has to be carefully monitored. Nitric acid has to be introduced very slowly... [Pg.244]

Biological. In anoxic groundwater near Bemidji, MI, 1,3,5-trimethylbenzene anaerobically biodegraded to the intermediate tentatively identified as 3,5-dimethylbenzoic acid (Cozzarelli et al., 1990). [Pg.1125]

Dimethylbenzoic acid [419-06-9] M 150.2, m 170 . Distd in steam, crystd from water or EtOH... [Pg.191]

Dimethylbenzoic acid and derivs 5 D1326—D1327 2-azido-3,5-dimethylbenzoic acid 5 D1326 dinitrodimethylbenzoic acids 5 D1327 X,X-dinitroso-2,4-dimethylbenzoic acid ( ) 5D1326... [Pg.563]

Dimethylbenzoic acid, 3146 Dimethylberyllium—1,2-dimethoxyethane, 0887 DimethylberyIlium, 0886 Dimethylbismuth chloride, 0889... [Pg.2082]

The ease of oxidation in the presence of the CAB system with hydrogen peroxide is generally benzyl alcohols > aldehydes > toluenes. This series accounts for the reactivity and subsequent product distributions when 1,4-dimethybenzene is oxidized with the CAB system. Here, 4-methylbenzoic acid forms preferentially to attack at the second methyl group. Similarly, oxidation of 1,3,5-trimethylbenzene yields 3,5-dimethylbenzoic acid. This is complementary to the reactivity observed with the HBr/hydrogen peroxide/hv method (see... [Pg.131]

See other pages where Dimethylbenzoic acid is mentioned: [Pg.550]    [Pg.870]    [Pg.902]    [Pg.322]    [Pg.214]    [Pg.116]    [Pg.1037]    [Pg.1587]    [Pg.819]    [Pg.1139]    [Pg.1171]    [Pg.293]    [Pg.123]    [Pg.1527]    [Pg.274]    [Pg.335]    [Pg.214]    [Pg.221]    [Pg.221]    [Pg.322]    [Pg.811]    [Pg.851]    [Pg.284]    [Pg.1097]    [Pg.1653]    [Pg.2487]    [Pg.2549]    [Pg.1037]    [Pg.1587]    [Pg.662]    [Pg.244]    [Pg.275]    [Pg.480]    [Pg.481]   
See also in sourсe #XX -- [ Pg.245 ]

See also in sourсe #XX -- [ Pg.56 , Pg.86 ]

See also in sourсe #XX -- [ Pg.203 , Pg.259 ]

See also in sourсe #XX -- [ Pg.203 , Pg.259 ]

See also in sourсe #XX -- [ Pg.489 ]



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2-Benzyloxy-5-chloro-4-methoxy-3,6-dimethylbenzoic acid

2.4- Dimethoxy-3,6-dimethylbenzoic acid

2.4.5- Trihydroxy-3,6-dimethylbenzoic acid

2.6- Dihydroxy-3,5-dimethylbenzoic acid

4- Bromo-2,5-dimethylbenzoic acid

4-Benzyloxy-2-hydroxy-3,6-dimethylbenzoic acid

4-Benzyloxy-2-methoxy-3,6-dimethylbenzoic acid

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