Sprung Horn Kramer & Woods
Herbicidal 3-hydroxy-2-cyclohexen-1-ones
 Herbicidal 3-hydroxy-2-cyclohexen-1-ones of the formula ##STR1## wherein R.sup.1 and R.sup.2 each is hydrogen or methyl, PA0 R.sup.3 is C.sub.1-4 alkyl, cyclopropylmethyl, C.sub.3-4 alkenyl which may be substituted by one to three halogen atoms or C.sub.3-4 alkynyl, PA0 R.sup.4 is C.sub.1-4 alkyl, PA0 R.sup.5 each independently is halogen, C.sub.1-4 alkyl, C.sub.1-4 haloalkyl, C.sub.1-4 alkoxy, C.sub.1-4 haloalkoxy, C.sub.1-4 alkylthio, C.sub.1-4 haloalkylthio or cyano, PA0 n is 0, 1 or 2, and PA0 m is 0, 1 or 2. 
Nihon Tokushu Noyaku Seizo K.K.
A C A C C
A01N C07C A01N C07C C07C
inventional additional inventional inventional inventional
Toyohiko Toshio Akihiko Hidenori Atsumi Tadao
Kume Goto Yanagi Hayakawa Kamochi Asami