Process for the preparation of novel, herbicidally active phenoxyphenoxyalkanecarboxylic acid derivatives which are substituted in the nucleus, compositions containing them, and their use for controlling weeds
DR. OTTO ROHR,DR. BEAT BOEHNER,DR. HANS-ULRICH BLASER,DR. GEORG PISSIOTAS
申请号：
CH19760008829
公开号：
CH624927(A5)
申请日:
1976.07.09
申请国别(地区):
瑞士
年份:
1981
代理人:
摘要：
Process for the preparation of novel compounds of the formula I <IMAGE> in which R1 denotes hydrogen, halogen, the trifluoromethyl or cyano group, R2 denotes hydrogen, halogen, a cyano group or lower alkyl, R3 and R4 independently of one another in each case denote hydrogen or lower alkyl, and R5 denotes a group -OH, -O-cation, -O-alkyl, -O-alkoxyalkyl, -S-alkyl, -S-alkenyl, -S-CH2-COO-alkyl, -O-alkenyl, -O-alkynyl, -O-cycloalkyl, -O-alkyl-N(dialkyl), an optionally substituted benzyloxy, phenoxy or phenylthio radical, furthermore NH2, NH-alkyl, -N(dialkyl), or <IMAGE> The active substances of the formula I and compositions containing them are useful selective herbicides.
