Y. Ivanov, A. Kokorin, A. Shapiro
Oct 1, 1976
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Journal
Russian Chemical Bulletin
Abstract
1. The following compounds have been synthesized: 6-tert-butyl, 6-tert-octyl-, 6-fluoro-, 5-nitro-, and 6- and 8-oxy derivatives of hydrogenated 2,2,4-trimethylquinoline, as well as a stable 4,4′-di-tert-butyl nitroxide. 2. Alkylization of 2,2,4-trimethyl-1,2-dihydro-1,2,3,4-tetrahydroquinoline and diphenylamine by isobutylene in the presence of ZnCl2 at 170°C largely proceeds through the para position. 3. The structures of these new amines have been checked through ESR and NMR spectra. Hfs constants for o-, p-, and m-protons, for the o- and p-CH3 group protons (hyperconjugation mechanism), and for the fluorine atom, of these new nitroxide radicals have been evaluated.