Sulfamoylphenylureas

Details Sulfamoylphenylureas Sulfamoylphenylureas

1991-01-03

1993-06-01

Ivy, C. Warren

Plant protecting and regulating compositions

Antidotes

Hetero ring containing antidote

564 49, 504112, 504108, 504110, 504109, 504105, 504107, A01N 3100

Patent

active

052155706

ABSTRACT:
The N-acylsulfamoylphenylureas of formula I below are suitable as counter-agents (antidotes or safeners) for protecting cultivated plants from the phytotoxic action of herbicides. Suitable crops are preferably cereals, soybeans, sorghum, maize and rice, and suitable herbicides are sulfonylureas, chloroacetanilides and aryloxyphenoxypropionic acid derivatives.
The N-acylsulfamoylphenylureas have the formula I ##STR1## wherein A is a radical selected from the group ##STR2## R.sub.1 is C.sub.1 -C.sub.4 -alkoxy or each of R.sub.1 and R.sub.2, independently of the other, is hydrogen, C.sub.1 -C.sub.8 alkyl, C.sub.3 -C.sub.8 cycloalkyl, C.sub.3 -C.sub.6 alkenyl, C.sub.3 -C.sub.6 alkynyl, ##STR3## or C.sub.1 -C.sub.4 alkyl substituted by C.sub.1 -C.sub.4 alkoxy or by ##STR4## or R.sub.1 and R.sub.2 together form a C.sub.4 -C.sub.6 alkylene bridge, or a C.sub.4 -C.sub.6 alkylene bridge interrupted by oxygen, sulfur, SO, SO.sub.2, NH or by --N(C.sub.1 -C.sub.4 alkyl)-, R.sub.3 is hydrogen or C.sub.1 -C.sub.4 alkyl, R.sub.a to R.sub.h, R.sub.x and R.sub.y are as defined in the disclosure.

REFERENCES:
patent: 3119682 (1964-01-01), Martin et al.
patent: 3600436 (1972-05-01), Scherer et al.
patent: 3775403 (1973-11-01), Shen et al.
patent: 4127405 (1978-11-01), Levitt
patent: 4260411 (1981-04-01), Yoshida et al.
patent: 4618361 (1986-10-01), Moser

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