RATE OF COPPER-EXTRACTION AND STRUCTURE OF MODEL BETA-DIKETONES AND 4-ACYL-5-PYRAZOLONES

Authors
CIERPISZEWSKI R RUSINSKAROSZAK D SZYMANOWSKI J MICKLER W UHLEMANN E
Citation
R. Cierpiszewski et al., RATE OF COPPER-EXTRACTION AND STRUCTURE OF MODEL BETA-DIKETONES AND 4-ACYL-5-PYRAZOLONES, Journal of radioanalytical and nuclear chemistry, 228(1-2), 1998, pp. 71-76
Citations number
18
Categorie Soggetti
Chemistry Inorganic & Nuclear","Chemistry Analytical","Nuclear Sciences & Tecnology
Journal title
Journal of radioanalytical and nuclear chemistry → ACNP
ISSN journal
02365731
Volume
228
Issue
1-2
Year of publication
1998
Pages
71 - 76
Database
ISI
SICI code
0236-5731(1998)228:1-2<71:ROCASO>2.0.ZU;2-8
Abstract
The rate of copper extraction with individual 4-acyl-5-pyrazolones and the stability of various enolic and keto forms and their monohydrates were studied. The rate of extraction depends mainly upon the structur e of substituent at position 4 and falls when the substituent becomes spacy. The effect of the substituent at position 1 is rather low. The enolic form with intramolecular hydrogen bonding is the most stable. I t can form hydrates with water molecules without intramolecular hydrog en bond breaking.