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An evaluation of some substituted hydrazones as analytical reagents

✍ Scribed by V. Zatka; J. Abraham; J. Holzbecher; D.E. Ryan

Publisher
Elsevier Science
Year
1971
Tongue
English
Weight
891 KB
Volume
54
Category
Article
ISSN
0003-2670

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✍ M.A.Salam Khan; W.I. Stephen πŸ“‚ Article πŸ“… 1970 πŸ› Elsevier Science 🌐 English βš– 610 KB

EXPERIMENTAL Prefiavation of reagents ## 7-Hydroxycoumarin and its various derivatives (see Table ) were generally prepared by the PECHMANN reaction 5; the g-carboxylic acid ethyl ester derivative was prepared by the method of KNOEVENAGEL 0. In some cases the modifications suggested by SESHADRI