Chinoin Gyogyszer Es Vegyeszeti Termekek Gyara Rt.

Jeno Seres

Todor Pfliegel

Lajos T Nagy

Sandor Virag

Gabor Horvath

Gabor Kulcsar

Antal Gajary

Laszlo Institoris

Ildiko Szilagyi

Lajos Guczoghy

Klara Daroczy Nee Csuka

Maria Puklics

Erika Varkonyi Nee Schlavicsko

Istvanne Daroczi Nee Csuka

Janosne Varkonyi Nee Slovicsko

Belane Radvanyi Nee Hegedus

A fungicidal compound of the formula: ##STR1## wherein A is C.sub.5-10 cycloalkyl, R is hydrogen, C.sub.1-6 alkyl, phenyl optionally substituted by one or more groups selected from C.sub.1-4 alkyl, nitro, hydroxy, carboxy, sulfo, sulfonylamino, halogen, C.sub.1-4 alkoxy, C.sub.1-4 acyloxy, C.sub.2-5 alkoxycarbonyl, C.sub.1-4 acyl, and N-(C.sub.2-5 alkoxycarbonyl)-sulfonylamino, or phenyl-(C.sub.1-4 alkyl) or a salt thereof.

1-Substituted-3-cycloalkyl-sulfonyl-pyrrolidine-2,5-dione derivatives

Compounds of the formulae ##STR1## are disclosed wherein R is hydrogen, halogen, phenyl, phenyl-C.sub.1 to C.sub.4 alkylthio, C.sub.1 to C.sub.6 alkylthio, C.sub.5 to C.sub.7 cycloalkylthio, phenylthio or phenylsulfonyl;

Maleimide and succinimide derivatives and herbicidal method of use

The invention relates to a new and improved method for the preparation of N-phosphonomethyl-glycine, a potent pre-emergence herbicide. According to the invention glycine, formaldehyde and a dialkyl phosphite are condensed in an aqueous alkaline medium to form a N-phosphonomethyl-glycine dialkyl ester, and the diester is hydrolyzed with a mineral acid.

Process for the preparation of N-phosphonomethyl-glycine

A compound selected from the group which consists of the amidine of formula ##STR1## and the phytotoxically acceptable addition salts, hemihydrates and hydrates thereof,

N-(triaryl-methyl)-amidines, process for the preparation thereof and

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Budapest, Hungary

Jeno Seres