Novel pyrazole phenyl ether herbicides
1992
Moedritzer, K. | Allgood, S.G. | Charumilind, P. | Clark, R.D. | Gaede, B.J. | Kurtzweil, M.L. | Mischke, D.A. | Parlow, J.J. | Rogers, M.D. | Singh, R.K.
From a recently discovered new pyrazole derivative and its known regioisomer, two classes of novel, regioisomeric pyrazole phenyl ethers (phenoxypyrazoles) were synthesized. Structure/activity studies of sets of the two isomeric phenoxypyrazoles showed that 3-phenoxypyrazoles, generally, are orders of magnitude more active as herbicides than are the corresponding 5-phenoxypyrazoles. Within the class of 3-phenoxypyrazoles the nature of the substituents on the pyrazole and phenyl moieties determined herbicide activity, crop selectivity, weed spectrum and field performance.
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