Trimellitic acid, trimesic

Trimellitic acid, b29 Trimesic acid, b30 Trimesoyl chloride, b32 Trimethylacetaldehyde, d596... 

Linear PC[23] 1,1,1 -tri(4-hydroxy-phenyl) ethane, 2,2 5,5 -tetra(4-hydroxypheny 1) hexane, trimellitic anhydride, trimellitic acid, trimellitoyl trichloride, 4-chloroformyl phthalic anhydride, pyromellitic acid, pyromellitic dianhydride, mellitic acid, mellitic anhydride, trimesic acid, benzophenonetetracarboxylic acid and benzophenonetetracarboxylic anhydride (0.1-10 % by weight) 100-400 Increased branching and crosslinking... 

Manufacture. The only current U.S. manufacturer of trimesic acid is Amoco Chemical Co. It is produced by oxidation of mesitylene (1,3,5-trimethylbenzene) via the Hquid-phase oxidation in acetic acid using the cobalt— manganese—bromine catalyst system (138). This is a variant of the system used to produce terephthaUc and isophthaUc acids as well as trimellitic anhydride. American Bio-Synthetics Corp. did produce it by batch oxidation of mesitylene with potassium permanganate. 

Trimellitic anhydride, b32 Trimesic acid, b31 Trimesoyl chloride, b33 T rimethoxymethy lsilane, m455 Trimethylacetaldehyde, d677... 

In the cyclotrimerization of propynoic acid, trimellitic (l,2,4-fb,l l3((X)2H),) and trimesic acid (l,3,5-CgH3(CO2H)3) are obtained as the product of head-to-head or head-to-tail linkage, respectively. For the sake of comparison, reactions were conducted both in neat water and in neat THF. In all cases, the yield of the trimer was higher in the aqueous system, evidencing the high tolerance of the rhodium catalyst towards water. 

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