Name: cis-Cyclohexane-1,2-dicarboxylic acid. The fused heterocycle is formed by combining a benzene ring with a single heterocycle, or two or more single heterocycles. Compound: cis-Cyclohexane-1,2-dicarboxylic acid, is researched, Molecular C8H12O4, CAS is 610-09-3, about Solvolytic reactions of cyclic anhydrides in anhydrous acetic acid. Author is Haddadin, M. J.; Higuchi, T.; Stella, V..
The reversible reactions of several cyclic anhydrides with HOAc to form Ac2O and the corresponding dicarboxylic acid, catalyzed by HClO4 at 25°, were studied. The equilibrium constants calculated from spectral data, were 4.85 × 10-4, 1.08 × 10-1, and 4.6 × 10-1 M for succinic, trans-1,2-cyclohexanedicarboxyllic, and glutaric anhydrides, resp. Maleic, phthalic, and cis-1,2-cyclohexanedicarboxylic anhydrides did not undergo any detectable reaction with HOAc under these conditions, suggesting still higher stability. The reverse rate constants were relatively independent of the structure of the attacking diacid, while the forward rate constants were found to parallel the equilibrium constants The rate-determining step for the forward reaction appears to be the breakdown of the tetrahedral intermediate formed by the attack of HOAc mol. on the protonated cyclic anhydride.
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Reference:
Benzisoxazole – Wikipedia,
Benzisoxazole – an overview | ScienceDirect Topics