PRE-EMERGENT HERBICIDES,PROCESS OF PREPARATION AND METHOD OF COMBATING UNWANTED VEGETATION

摘要

Herbicidal benzylcarbonamides Amides of formula (I) PhCH2N(Pr1) COR, where and X and X1 = Cl, Br, Me, OMe or (one only) H, are pre-emergent herbicides, esp. active against grasses. A claimed example is N-benzyl-N-isopropylpivalamide. (I) are prepd. by condensing PhCH2NHPr1 with RCOCl in the presence of a base.