Herbicidal 2-(oxa or thia heterocycle)5-amino-3-oxo-4-...

Details Herbicidal 2-(oxa or thia heterocycle)5-amino-3-oxo-4-... Herbicidal 2-(oxa or thia heterocycle)5-amino-3-oxo-4-...

C - Chemistry, Metallurgy

07

D

260/327, 260/364

C07D 407/04 (2006.01) A01N 43/04 (2006.01) C07D 409/04 (2006.01)

Patent

CA 1255317

61936 - 1665 ABSTRACT OF THE DISCLOSURE The invention relates to herbicidal 2-(oxahetero- cycle or thiaheterocycle)-5-amino-3-oxo-4-(substituted-phenyl)-2, 3-dihydrofurans of the formula Image (I) wherein R1 and R2 are independently hydrogen, lower alkyl having 1 through 4 carbon atoms or alkenyl having 3 through 6 carbon atoms; R3 is hydrogen, lower alkyl, lower alkoxy, halo, or trifluoromethyl and can be at any available position on the phenyl ring; R4 is lower alkyl, lower alkoxy, halo, or trifluoro- methyl; Z is a saturated or unsaturated sulfur or oxygen hetero- cycle radical having 5 or 6 ring atoms one of which is sulfur or oxygen and the remainder of which are carbon atoms. The compounds generally exhibit both pre-emergence and post-emergence phytotoxicity and are useful as herbicides and also plant growth regulating agents at low dosages.

489238

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