申请人:RHONE POULENC AGRICULTURE LTD.
公开号:EP0509717A2
公开(公告)日:1992-10-21
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.
式中的
苯并咪唑基衍
生物
其中 Y 代表任选取代的烷基、烯基、炔基或环烷基;或代表基团 -OR、-SR、-SO₂R³、卤素、O-芳基、
氰基、-NR⁴R⁵、芳基、芳烷基或硝基;
R² 代表基团-OH、-NR⁷R⁸ 或-XM; A 代表-SO₂B;
Y¹ 代表任选取代的烷基、烯基或炔基;或任选取代的环烷基;或诸如-SR、-OR、-OR1a、卤素、芳基、芳烷基、-芳基或-NR⁷R⁸的基团;
n 为零或 1 至 3 的整数;m 为 1 至 4 的整数;
R 代表任选取代的烷基或环烷基;
R1a 代表任选取代的烯基或炔基;
R⁷ 和 R⁸ 独立地代表一个基团,如氢、R、芳基或芳烷基; X 代表氧或
硫;
M 代表任选取代的烷基、任选取代的环烷基或芳基、芳烷基、烯基、炔基或
亚胺基团;
B 代表任选取代的烷基、任选取代的环烷基、芳基、芳烷基或 NR⁷R⁸;
但其中一个基团 Y¹ 代表
苯并咪唑环 4 位或 5 位上的-OR1a;
其中 n 代表 2 或 3,在
吡啶环的 5 位和 6 位上相邻的两个基团 Y 与它们所连接的碳原子可形成融合的苯基环,或可形成环中有 5 或 6 个原子且环中有不超过 2 个选自氧和
硫的杂原子的脂肪族或芳香族环;
及其农业上可接受的盐类;
包含这些化合物的除草组合物及其在作物保护中的应用。