Original scientific paper

1H-N. M. R. Study of the Syn! Anti Ratio of Oximes and 2,4- Dinitrophenyl Hydrazones Determined by ASIS and LIS Methods

M. Žinić ; Faculty of Pharmacy and Biochemistry, and Institute of Organic Chemistry and Biochemistry, University of Zagreb, 41000 Zagreb, Croatia, Yugoslavia
M . Štromar ; Faculty of Pharmacy and Biochemistry, and Institute of Organic Chemistry and Biochemistry, University of Zagreb, 41000 Zagreb, Croatia, Yugoslavia
M. Malnar ; Faculty of Pharmacy and Biochemistry, and Institute of Organic Chemistry and Biochemistry, University of Zagreb, 41000 Zagreb, Croatia, Yugoslavia
D. Kolbah ; Faculty of Pharmacy and Biochemistry, and Institute of Organic Chemistry and Biochemistry, University of Zagreb, 41000 Zagreb, Croatia, Yugoslavia

Abstract

Starting from 1-chloro-butane-2-one (I) and 3-chloro-butane-
2-one (II), oximes Illa, b and IV as well as 2,4-dinitrophenyl
hydrazones Va, b and VI were prepared. 'H-nmr spectra show that
I gives a mixture of isomeric oximes Illa and IIIb (21 : 79) and
2,4-dinitrophenyl hydrazones Va and Vb (20 : 80). From ketone II
only anti isomers IV and VI were obtained. Signals were assigned
using ASIS method. From paramagnetic shifts obtained by LIS
method it was concluded that unshared pair of nitrogen electrons
participates in complex formation with rare earth atom.

Keywords

Hrčak ID:

196837

URI

https://hrcak.srce.hr/196837

Publication date:

20.7.1974.

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