The influence of crown ethers on cation migration processes. Part 6.—The 1,4-naphthoquinone radical anion
作者:Nicholas J. Flint、Brian J. Tabner
DOI:10.1039/f19888403917
日期:——
The radicalanion of 1,4-naphthoquinone has been prepared by alkali-metal reduction, employing Li, Na, K and Cs, in 1,2-dimethoxyethane in the presence of 18-crown-6, 15-crown-5 and 12-crown-4. Linewidth alternation is observed in the e.s.r. spectra of some of these systems owing to intramolecular cationmigration between equivalent sites adjacent to the two carbonyl groups. In some systems a species