Novel amidine compounds which may be active ingredients in herbicides that are reliably effective at a lesser dose and highly safe, and herbicides containing these compounds as active ingredients are provided. Amidine compounds represented by a formula (1′)
and herbicides containing at least one kind of these compounds as active ingredients, [wherein G is an optionally substituted nitrogen-containing heterocyclic group represented by a formula (2′)
with a proviso that the number of carbons constituting the nitrogen-containing heterocycle of the nitrogen-containing heterocyclic group is 10 or less and that 2H-Indazole ring is excluded; Q′ represents cyano or the like; and A′ represents substituted phenyl or the like].
Electrochemical oxidation of 1-phenylpyrazolidin-3-ones. Part 3. Reaction mechanism
作者:Anthony J. Bellamy、David I. Innes、Peter J. Hillson
DOI:10.1039/p29830000179
日期:——
cation-radical at position 2 (NH). In the absence of added base and at substrate concentration > 2mM, the substrate itself deprotonates the cation-radical. In the presence of basic chloride ions oxidation occurs via the conjugate base of 1-phenylpyrazolidin-3-one. The lifetime of the cation-radical is relatively insensitive to the nature of the substituents at C(4) and C(5), but is increased markedly