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Kinetic-fluorimetric determination of cerium with 1-amino-4-hydroxyanthraquinone

โœ Scribed by F. Salinas; C. Genestar; F. Grases

Publisher
Elsevier Science
Year
1982
Tongue
English
Weight
227 KB
Volume
27
Category
Article
ISSN
0026-265X

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## Abstract The reaction of 5โ€aminoโ€1โ€phenylpyrazoleโ€4โ€carbonitriles 1aโ€c with dimethyl acetylenedicarboxylate in the presence of potassium carbonate in dimethyl sulfoxide gave trimethyl 4,5,5a,8โ€tetrahydroโ€1โ€phenylโ€4,8โ€dioxoโ€1__H__โ€pyrazolo[3,4โ€__e__]indolizineโ€5,5a,6โ€tricarboxylate derivatives 3a