Alexander J. Pandell's research while affiliated with California State University and other places
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Publications (10)
The Fe(III)-catalyzed peracetic acid (HOOAc) oxidation of catechol to cis,cis-muconic acid (MA) is proposed as a model for the action of the Fe(III)-containing dioxygenase pyrocatechase (catechol 1,2-dioxygenase). The yield of MA is a function of the [Fe(III)] reaching a maximum of 75% when the ratio [catechol]/[Fe(III)] is 1000. No appreciable qua...
Phenol is oxidized to cis,cis-muconic acid (CCMA) by peracetic acid in the presence of catalytic quantities of Cu(II) and Fe(III). No CCMA is formed in the absence of these metals or in the presence of other specified metals. The yield of CCMA depends on the kind and quantity of metal ion used, being higher for oxidations with Fe(III) than Cu(II)....
Es werden Kinetik und Stereochemie der Oxidation der Phenylvaleriansäuren (I) zu den Hydroxyphenylvaleriansäuren (II) durch K-permanganat in konzentrierter wäßriger Base untersucht.
Alkylation of benzene with (S)-(-)-γ-valerolactone in benzene solvent with 1.2 equiv of aluminum chloride gives (R)-(-)-γ-phenylvaleric acid with 40% net inversion of configuration. The reaction appears to involve racemization of an intermediate species with the alkylation competing with return to starting material.
Thesis (Ph. D.)--Dept. of Chemistry, Stanford University. Includes bibliographical references.
Citations
... These experimental results also indicate that CuTNPP molecules and the open metal sites within the MOF are both efficient for the DTBC oxidation reaction. It was reported that the oxidation product, 3,5-di-tert-butyl-1,2-quinone (DTBQ), could be further oxidized to lactone or dicarboxylic acid by hydrogen peroxide in acidic system [27], but no other oxidation products except DTBQ were detected in our experiments (Figs. S9 and S10). ...
... 16 Traditional ways of producing MA rely on the chemical transformation of non-renewable petroleum-based feedstocks (catechol, phenol…) in presence of acids or heavy metal catalysts (Fig. 2). 1,14,17,18 Recently, biomass based renewable resources are gaining both social and commercial interest and the door to the synthesis of MA through biological routes has been firmly opened. The production of MA through chemical routes can give the three isomeric forms, whereas in biological routes, mainly ccMA and ctMA are obtained. ...
... The molecule has two potential sites to complex metals, the carboxyl and the odiphenol groups. Several studies have been carried out proposing oxidation mechanisms of caffeic acid, such as the auto-oxidation to small molecules, usually dimers or trimers [1], the enzymatic oxidation by peroxidase on oriented gold surface modified [2], the oxidation catalyzed by metal ions [3]. Despite the large number of studies on the oxidation of caffeic acid, few studies are found about the adsorption of CA on substrates. ...
... Referring to Scheme 1, selectivity towards GVL appears to be very high and near quantitative, as confirmed by NMR and GC analyses of the organic phase and HPLC analyses of the aqueous phase. The intermediate 4-hydroxyvalericacid (4-HVA) was not observed, a clear indication that the subsequent lactonisation of 4-HVA to GVL is very fast in the system [33,34]. After 60 min for an experiment, the conversion of LA was 82%. ...
... The following are available, Synthetic procedures, chemical analysis, and single flow cell test data are available in the supporting information. Figures S1-S10, Schemes S1-S3 [26][27][28]. Funding: This work was financially supported through investments by Innovation Fund Denmark via the Grand Solutions projects "ORBATS" file no. 7046-00018B and "DanFlow" file no. ...
