A simple synthesis of novel extraction reagents. 4-acyl-5-pyrazolone-substituted crown ethers

Authors
Yamazaki, S Hanada, M Yanase, Y Fukumori, C Ogura, K Saeki, T Umetani, S
Citation
S. Yamazaki et al., A simple synthesis of novel extraction reagents. 4-acyl-5-pyrazolone-substituted crown ethers, J CHEM S P1, (6), 1999, pp. 693-696
Citations number
29
Categorie Soggetti
Chemistry & Analysis","Organic Chemistry/Polymer Science
Journal title
JOURNAL OF THE CHEMICAL SOCIETY-PERKIN TRANSACTIONS 1
ISSN journal
0300922X → ACNP
Issue
6
Year of publication
1999
Pages
693 - 696
Database
ISI
SICI code
0300-922X(19990321):6<693:ASSONE>2.0.ZU;2-G
Abstract
A synthesis of novel 4-acylpyrazol-5-one-substituted crown ethers metal-che lating reagents is described. 4-Acylpyrazol-5-one-substituted dibenzo-16-cr own-5 1a, 4-acylpyrazol-5-one-substituted dibenzo-19-crown-6 1b, and bis(4- acylpyrazol-5-one)-substituted diaza-18-crown-6 1c were designed and synthe sized by simple coupling reactions between alpha-chloro 4-acylpyrazol-5-one 3 and the corresponding crown ethers 2a-c. Compound 1a was found to be an effective and metal ion-selective extraction reagent.