Structure-activity Relationship of Herbicidal 2,3-Dicyano-5-Substituted Pyrazines
Sixty six 2,3-dicyano-5-substituted pyrazines were synthesized and their herbicidal activities against barnyard grass were measured in pot tests to clarify the relationship between chemical structure and activity.The activity of 59 derivatives was related parabolically to the hydrophobic substituent parameter at the 5-position of the pyrazine ring.
Novel 2,3-dicyanopyrazine derivatives of the formula STR1 wherein A represents a hydrogen atom, a lower alkyl group, an unsubstituted or substituted phenyl group, a benzyl group, or a group of the formula -ZR1 in which Z represents an oxygen or
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(2008/06/13)
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