Structure-activity Relationships of Herbicidal 5-Ethylamino- and 5-Propylamino-2,3-Dicyanopyrazines
Sixty-eight 6-substituted 5-ethylamino- and 5-propylamino-2,3-dicyanopyrazines were synthesized and their herbicidal activities against barnyard grass were measured in pot tests.The most active compound was 2,3-dicyano-5-propylamino-6-(m-chlorophenyl)pyra