ISSN print edition: 0366-6352 ISSN electronic edition: 1336-9075 Registr. No.: MK SR 9/7 Published monthly

Use of proton NMR spectroscopy for quantitative measurements. Kinetics of formation of 2-cyanoquinoxaline-1,4-dioxide from 2-acetoxyiminomethylquinoxaline-1,4-dioxide

J. Běluša, M. Holík, R. Kukla, and L. Nováček

Research Institute of Риге Chemicals, Lachema, 621 33 Brno

Abstract: The elimination of acetic acid from 2-acetoxyiminomethylquinoxaline-1,4-dioxide and the formation of 2-cyanoquinoxaline-l,4-dioxide in trifluoroacetic acid is a first-order reaction. A novel experimental procedure of kinetic measurements using a direct recording of a height of signal selected from the spectrum of a reacting compound was found to be superior to the commonly used repeated recording of the corresponding part of the spectrum.

Full paper in Portable Document Format: 322a232.pdf

Chemical Papers 32 (2) 232–237 (1978)