Pyridyl sulfonylurea herbicides

Details Pyridyl sulfonylurea herbicides Pyridyl sulfonylurea herbicides

1990-05-30

1994-10-04

Shah, Mukund J.

Plant protecting and regulating compositions

Plant growth regulating compositions

Organic active compound containing

504239, 544216, 544331, A01N 4366, A01N 4354, C07D25146

Patent

active

053526546

ABSTRACT:
N-Pyridinesulfonyl-N'-pyrimidinyl- and -triazinylureas of the formula I ##STR1## in which R.sub.1 is hydrogen, halogen, C.sub.1 -C.sub.4 alkyl, C.sub.1 -C.sub.4 alkoxy, C.sub.1 -C.sub.4 alkylthio, C.sub.1 C.sub.4 haloalkoxy or CF.sub.3 ; R.sub.2 is hydrogen or C.sub.1 -C.sub.4 alkyl; A is C.sub.1 -C.sub.6 alkyl or C.sub.3 -C.sub.6 cycloalkyl, each of which is monosubstituted to trisubstituted by halogen, or is C.sub.1 -C.sub.4 alkyl or C.sub.3 -C.sub.6 cycloalkyl, each of which is substituted by C.sub.1 -C.sub.4 alkoxy, C.sub.1 -C.sub.4 alkylthio, C.sub.1 -C.sub.4 alkylsulfonyl, C.sub.1 -C.sub.4 alkylsulfinyl, C.sub.2 -C.sub.4 alkenyl, C.sub.5 -C.sub.6 cycloalkenyl, amino, C.sub.1 -C.sub.4 alkylamino, C.sub.1 -C.sub.4 dialkylamino or C.sub.2 -C.sub.4 alkynyl, it being possible for the C.sub.2 -C.sub.4 alkenyl radical and the C.sub.5 -C.sub.6 cycloalkenyl radical to be additionally monosubstituted to trisubstituted by halogen; or A is a 4- to 6-membered saturated heterocycle which contains a hetero atom selected from the group comprising O, N and SO.sub.2 ; or A is C.sub.1 -C.sub.4 alkyl which is substituted by a 4- to 6-membered saturated heterocycle which contains a hetero atom selected from the group comprising O, N and SO.sub.2 ; X is C.sub.1 -C.sub.3 alkyl, C.sub.1 -C.sub.3 alkyl which is monosubstituted to trisubstituted by halogen, or is C.sub.1 -C.sub.3 alkoxy or C.sub.1 -C.sub.3 alkoxy which is monosubstituted to trisubstituted by halogen; Y is halogen, C.sub.1 -C.sub.3 alkyl, C.sub.1 -C.sub.3 alkyl which is monosubstituted to trisubstituted by halogen, or is C.sub.1 -C.sub.3 alkoxy, C.sub.1 -C.sub.3 alkoxy which is monosubstituted to trisubstituted by halogen, or is cyclopropyl, methylamino or dimethylamino; and E is nitrogen or the methine group, and the salts of these compounds with amines, alkali metal bases or alkaline earth metal bases or with quaternary ammonium bases have good selective herbicidal properties pre-emergence and post-emergence, and good growth-regulating properties.

REFERENCES:
patent: 4456469 (1984-06-01), Adams, Jr. et al.
patent: 4579583 (1986-04-01), Fory
patent: 4713109 (1987-12-01), Schuster et al.
patent: 4774337 (1988-09-01), Liang
Liang, Paul Hsiao Tseng, Chemical Abstract vol. 109, 1988 entery #230861u.
J. Am. Chem. Soc. 72, 1687 (1950).
Advances in Aeterocyclic Chemistry 6 (1966).
Organic Synthesis, vol. 35 65-69, 1955.
Journal of Fluorine Chemistry, 21 (1982) 171-189.
Can. J. Chem. 57 (1979).
Federick Leonard (1954) pp. 2855-2860, vol. 77 J. Am. Chem. Soc. 77 (1955).

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