申请人:RHONE POULENC AGRICULTURE LTD.
公开号:EP0509717A3
公开(公告)日:1993-03-24
Benzimidazolyl derivatives of formula
wherein Y represents an optionally substituted alkyl, alkenyl, alkynyl or cycloalkyl group; or a group -OR, -SR, -SO₂R³, halogen, O-aryl, cyano, -NR⁴R⁵, aryl, aralkyl or nitro;
R² represents a group -OH, -NR⁷R⁸ or -XM; A represents -SO₂B;
Y¹ represents an optionally substituted alkyl, alkenyl or alkynyl group; or an optionally substituted cycloalkyl group; or a group such as -SR, -OR, -OR1a, halogen, aryl, aralkyl, -Oaryl or -NR⁷R⁸;
n is zero or an integer from 1 to 3; m represents an integer from 1 to 4;
R represents an optionally substituted alkyl or cycloalkyl group;
R1a represents an optionally substituted alkenyl or alkynyl group;
R⁷ and R⁸ represent independently a group such as hydrogen, R, aryl or aralkyl; X represents oxygen or sulphur;
M represents optionally substituted alkyl, optionally substituted cycloalkyl, or an aryl, aralkyl, alkenyl, alkynyl, or an imine group;
B represents optionally substituted alkyl group, optionally substituted cycloalkyl, aryl, aralkyl or NR⁷R⁸;
with the proviso that one of the groups Y¹ represents -OR1a, in either the 4-position or the 5-position of the benzimidazole ring;
where n represents 2 or 3, two groups Y which are adjacent to each other in the 5- and 6-positions on the pyridine ring can, with the carbon atoms to which they attached, form a fused phenyl ring, or can form an aliphatic or aromatic ring having 5 or 6 atoms in the ring and having not more than 2 heteroatoms in the ring selected from oxygen and sulphur;
and agriculturally acceptable salts thereof;
herbicidal compositions comprising these compounds and their application to crop protection.
式中,Y代表可选取取代基的烷基、烯基、炔基或环烷基;或者是-OR、-SR、-SO₂R³、卤素、O-芳基、氰基、-NR⁴R⁵、芳基、芳基烷基或硝基;R²代表-OH、-NR⁷R⁸或-XM;A代表-SO₂B;Y¹代表可选取取代基的烷基、烯基或炔基;或者是可选取取代基的环烷基;或者是- SR、-OR、-OR1a、卤素、芳基、芳基烷基、-O芳基或-NR⁷R⁸等基团;n为0或1到3的整数;m代表1到4的整数;R代表可选取取代基的烷基或环烷基;R1a代表可选取取代基的烯基或炔基;R⁷和R⁸代表独立的氢、R、芳基或芳基烷基等基团;X代表氧或硫;M代表可选取取代基的烷基、可选取取代基的环烷基或芳基、芳基烷基、烯基、炔基或亚胺基;B代表可选取取代基的烷基、可选取取代基的环烷基、芳基、芳基烷基或NR⁷R⁸等基团;但其中Y¹中的一个基团在苯并咪唑环的4位或5位上表示为-OR1a;当n为2或3时,在吡啶环的5位和6位上相邻的两个Y基团可以与它们连接的碳原子形成融合的苯环,或者可以形成环有5或6个原子并在环中不超过2个异原子(选自氧和硫)的脂肪环或芳香环;以及其农业上可接受的盐;包含这些化合物的除草剂组合物以及它们在作物保护中的应用。