Nihon Bayer Agrochem, K.k.

Yoshiko Kyo

Katsuhiko Shibuya

Yoshinori Kitagawa

Toshio Goto

Seishi Ito

Chieko Ueno

Kazuhiro Ukawa

Tatsuya Yamaoka

Wolfram Andersch

Yumi Hattori

Katsuaki Wada

Yuichi Otsu

Takahisa Abe

Natsuko Minegishi

Toru Obinata

Novel 1-substituted methyltetrazolinones of the formula (I)

Herbicidal 1-substituted methyl-tetrazolinones

Novel benzophenonehydrazone derivatives represented by the formula (I): ##STR1## wherein, R.sup.1 is halogen; R.sup.2 is hydrogen or C.sub.1-4 alkyl; R.sup.3 is cyano, optically substituted C.sub.1-4 alkyl, C.sub.2-4 alkenyl, C.sub.3-4 alkynyl, C.sub.1-4 alkyl-carbonyl or C.sub.1-4 alkoxy-thiocarbonyl; R.sup.4 is hydrogen, phenyl, optionally substituted C.sub.1-6 alkyl, optionally substituted C.sub.2-8 alkenyl, --CO--R.sup.8, --CO--O--R.sup.9 or ##STR2## R.sup.5 is hydrogen, formyl, phenyl, optionally substituted C.sub.1-8 alkyl, optionally substituted C.sub.2-8 alkenyl, optionally substituted C.sub.3-8 alkynyl, optionally substituted C.sub.1-8 alkyl-arbonyl, optionally substituted C.sub.1-6 alkyl-oxalyl, optionally substituted C.sub.1-8 alkoxy-carbonyl, optionally substituted C.sub.1-8 alkoxy-oxalyl, optionally substituted C.sub.3-8 cycloalkyl-carbonyl, optionally substituted C.sub.2-8 alkenyl-carbonyl or optionally substituted benzoyl; R.sup.6 is hydrogen or halogen; R.sup.7 is hydrogen, halogen or C.sub.1-2 alkyl, C.sub.1-4 alkyl-carbonyl or C.sub.1-4 alkoxy-thiocarbonyl; n is 0, 1 or 2, provided that n is 0 when R.sup.3 is cyano, C.sub.1-4 alkyl-carbonyl or C.sub.1-4 alkoxy-thiocarbonyl, is a single bond of Anti form or of Syn form. The benzophenonehydrazone derivatives of the formula (I) have excellent insecticidal activities.

Benzophenone hydrazone derivatives as insecticides

Novel 1-substituted methyltetrazolinones of the formula (I) ##STR1## wherein R.sup.1 represents a 5-membered heterocyclic radical which has 1 to 3 heteroatoms selected arbitrarily from the group consisting of N, O and S and which is optionally substituted by halogen and/or C.sub.1-4 alkyl, or represents oxiran-2-yl, optionally chloro-substituted pyridyl or C.sub.1-4 alkyl-S(O).sub.m --wherein m represents 0, 1 or 2, or represents a C.sub.3-6 alicyclic hydrocarbon radical; R.sup.2 and R.sup.3 represent, independently of one another, C.sub.1-4 alkyl, C.sub.3-7 cycloalkyl or optionally substituted phenyl, or R.sup.2 and R.sup.3 may form, together with the N-atom to which they are bonded, an optionally substituted ring; R.sup.4 represents a hydrogen atom or methyl; and n represents 0 or 1; as well as for their preparation processes and novel intermediates in their production. The inventive compounds of formula (I) are used as herbicides.

Herbicidal 1-alkenyltetrazolinones of the formula: ##STR1## wherein R.sup.1 represents the group: ##STR2## or the group: ##STR3## R.sup.2 and R.sup.3, independently of one another, represent C.sub.1-6 alkyl, C.sub.3-7 cycloalkyl which may optionally be substited by methyl, C.sub.2-4 alkenyl, C.sub.2-5 alkynyl, phenyl which may optionally be substituted or aralkyl which may optionally be substituted, or

Herbicidal 1-alkenyltetrazolinones

1-cycloalkenyltetrazolinone derivatives of the following herbicidal formula ##STR1## R.sup.1 is cycloalkenyl which may optionally be substituted by halogen C.sub.1-4 alkyl, or bicycloalkenyl which may optionally be substituted by halogen or C.sub.1-4 alkyl, and

1-cycloalkenyltetrazolinones

Herbicidal 1-cyclopropyl tetrazolinones of the formula ##STR1## wherein X represents C.sub.1-3 alkyl, C.sub.2-4 alkenyl or halogen,

Herbicidal 1-cyclopropyl tetrazolinones

Disclosed are herbicidal tetrazolinone derivatives, selective in paddy fields of the formula ##STR1## wherein X represents C.sub.1-4 alkyl,

Growing community of inventors

Tochigi, Japan

Yoshiko Kyo