Determination of zirconium, thorium and scandium with 2,5-dihydroxy-1,4-benzoquinone
β Scribed by S.P. Singhal; D.E. Ryan
- Publisher
- Elsevier Science
- Year
- 1966
- Tongue
- English
- Weight
- 334 KB
- Volume
- 35
- Category
- Article
- ISSN
- 0003-2670
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## Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a βFull Textβ option. The original article is trackable v
The zwitterionic intermediates (2a) in the oxidation of ortho-alkylphenols (1) and bis(sulfonium ylide) 3 form reasonably stable 2:1complexes (4), in which the ortho-quinone methide (oQM) moieties are not present in quinoid form with the exocyclic in-plane methylene group, but as zwitterionic, aroma
The 2,5-bisacrylate-substituted 1,4-benzoquinone bisketal 7a was synthesized by electrochemical oxidation of the corresponding dimethoxybenzene 6. The methyl ester 7a was transesterified to the corresponding ethyl, n-propyl and isopropyl esters 7bΟͺ7d by Ti(OEt) 4 catalysis and to the corresponding n