Nihon Tokushu Noyaku Seizo K.k.

Bayer Aktiengesellschaft

Nihon Bayer Agrochem, K.k.

Toyohiko Kume

Toshio Goto

Atsumi Kamochi

Junichi Saito

Akihiko Yanagi

Shinichi Tsuboi

Hiroshi Miyauchi

Shigeki Yagi

Akio Kudamatsu

Hidenori Hayakawa

Tadao Asami

Kunihiro Isono

Katsuhiko Shibuya

Masahiro Aya

Yoshio Kurahashi

Axel Haberkorn

Heinrich Kolling

Kazuomi Yasui

Shigeo Kishino

Shinji Sakawa

Noboru Matsumoto

Naoko Yamaguchi

Shinpei Kuyama

Kozo Shiokawa

Yumi Hattori

Shoko Sasaki

Nobuo Fukazawa

Novel benzoxazines of the formula (I) ##STR1## the use of the new compounds as herbicides, and novel compounds of the formula (IX) as intermediates ##STR2## are disclosed.

Benzoxazine intermediates

Novel benzoxazines of the formula (I) ##STR1## wherein Q represents ##STR2## X represents hydrogen or fluorine; and R represents alkyl, alkenyl, alkynyl, cyclopropylmethyl, cyanoalkyl, alkoxyalkyl, or alkylthioalkyl; the use of the new compounds as herbicides, and novel compounds of the formula (IX) as intermediates ##STR3## wherein Y represents hydrogen, nitro, or amino;

Herbicidally active benzoxazines

Herbicidal 3-hydroxy-2-cyclohexen-1-ones of the formula ##STR1## wherein R.sup.1 and R.sup.2 each is hydrogen or methyl,

Herbicidal 3-hydroxy-2-cyclohexen-1-ones

Herbicidal benzo-fused cyclic compounds of the formula ##STR1## wherein Q is ##STR2## Y is O or S, W is ##STR3## T is O, S, --NH-- or ##STR4## and R.sup.4 may represent, together with T, chlorine,

Benzo-fused cyclic compounds

Herbicidal compounds of the formula ##STR1## in which X denotes an oxygen atom or sulfur atom,

Heterocyclic compounds

Herbicidal 1-phenylpyrroles of the formula ##STR1## wherein each R.sup.1 represents methyl or together form a tetramethylene group,

1-phenylpyrroles

Herbicidally active pyrroles of the formula ##STR1## wherein R.sup.1 represents C.sub.1-4 alkyl, or one R.sup.1 together with the other R.sup.1 forms tetramethylene or butenylene,

Herbicidal novel benzothiazolonyl pyrroles

Herbicidal benzothiazolones of the formula ##STR1## wherein X represents hydrogen or halogen, R.sup.1 represents hydrogen, alkyl, various organic radicals, ##STR2## in which R.sub.2, R.sup.4, R.sup.5 and R.sup.6 each is hydrogen or an organic radical, and R.sup.3 is alkyl, cycloalkyl or optionally halo-substituted phenyl.

Benzothiazolone

Herbicidal 2,5-dihydropyrroles of the formula ##STR1## wherein A represents hydroxy, halogen, an alkylcarbonyloxy group having alkyl with 1 to 4 carbon atoms optionally substituted by halogen, or an alkylsulfonyloxy group having 1 to 4 carbon atoms optionally substituted by halogen,

Herbicidally active 2,5-dihydropyrroles

Herbicidally active novel 2,5-dihydropyrroles of the formula ##STR1## wherein R.sup.1 represents a hydrogen atom or an alkyl group having 1 to 4 carbon atoms, R.sup.2 and R.sup.3 each represent an alkyl group having 1 to 4 carbon atoms or a haloalkyl group having 1 to 4 carbon atoms or together may form a C.sub.2 -C.sub.6 alkylene group which may be substituted by halogen, and R represents a hydroxy group, a mercapto group, a halogen atom, an amino group or a group of the formula --O--W in which W represents an alkylcarbonyl, a halogenoalkylcarbonyl, an alkoxycarbonyl or a halogenoalkoxycarbonyl group each having 1 to 4 carbon atoms in the alkyl group, an alkylsulfonyl or a halogenoalkylsulfonyl group each having 1 to 4 carbon atoms in the alkyl group or a di-C.sub.1 -C.sub.4 -alkylamino sulfonyl group.

2,5-dihydropyrroles

Novel herbicidally active N-benzothiazolyl-2-5-dihydropyrroles of the formula ##STR1## in which R is hydrogen or an acyl group,

Novel N-benzothiazolyl-2,5-dihydropyrroles

Novel benzoxazines of the formula (I) ##STR1## wherein X is hydrogen or halogen,

Benzoxazines and use as herbicides

Novel benzoxazines of the formulae (I), (III), (IV), (V), (VII) and (XIV). ##STR1## Compound I is herbicidal and can also be reacted to convert the aminocarbonyl group to a nitrile, the resulting product also being herbicidal.

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Tokyo, Japan

Toyohiko Kume