A diquaternary salt of 1,5-naphthyridine

Summers, L. A.; Dickeson, J. E.

doi:10.1039/c1967001183a

Cited by 2 publications

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“…spectra (line width 50 mG) attributed to the radical cation 1 were obtained when the diquaternary salt was reduced with zinc dust in TFA. The parent 1,5-naphthyridine, under the same reducing conditions, also gave a well resolved e.s.r, spectrum of the dihydronaphthyridine cation radical (2). The intensity was, however, considerably decreased over that of 1 and the radical decayed slowly (half-life 15 min) at room temperature.…”

Section: Resultsmentioning

confidence: 81%

Electron Spin Resonance Study of the Cation Radicals of 1,5-Dihydronaphthyridine and Di-N-methyl-1,5-Naphthyridine

Sullivan¹,

Paudler²

1973

Can. J. Chem.

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The e.s.r. spectra of the cation radicals 1,5-di-N-methylnaphthyridine (1) and 1,5-dihydronaphthyridine (2) in trifluoroacetic acid have been reported and analyzed. The splitting constants of 2 are unequivocally assigned by comparison of the spectra of several partially deuterated derivatives. The methyl proton splitting constant of 1 is thought to be low in comparison with other similar radicals and possible reasons for this anomaly are discussed.

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Section: Resultsmentioning

confidence: 81%

Electron Spin Resonance Study of the Cation Radicals of 1,5-Dihydronaphthyridine and Di-N-methyl-1,5-Naphthyridine

Sullivan¹,

Paudler²

1973

Can. J. Chem.

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Chemical constitution and activity of bipyridylium herbicides: IV.—Diquaternary salts of methyl substituted 1,10‐phenanthrolines

Dickeson

Summers

1969

J Sci Food Agric

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Eight bridged diquaternary salts of methyl substituted 1,10‐phenanthrolines have been prepared. They are reduced in aqueous solution to radical cations at about the same potential as diquat by a one electron transfer which is largely reversed by air. in herbicidal tests they showed slight activity at a rate equivalent to 8 lb/acre. Their relatively poor phytotoxic properties are considered to be due to their large size which hinders their reaching the site of biological action of the bipyridylium herbicides.

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A diquaternary salt of 1,5-naphthyridine

Cited by 2 publications

References 0 publications

Electron Spin Resonance Study of the Cation Radicals of 1,5-Dihydronaphthyridine and Di-N-methyl-1,5-Naphthyridine

Electron Spin Resonance Study of the Cation Radicals of 1,5-Dihydronaphthyridine and Di-N-methyl-1,5-Naphthyridine

Chemical constitution and activity of bipyridylium herbicides: IV.—Diquaternary salts of methyl substituted 1,10‐phenanthrolines

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