Herbicidal 2,4-diamino-1,3,5-triazines - and their prepn. from 2,4-diamino-6-cyano -1,3,5-triazines

摘要

of formula (I): (where R, R2 are H, alkyl; R1, R3 are alkyl) are herbicides. (I) are prepd. by reacting a cpd. (II) with H2S.