Bayer Aktiengesellschaft

Bayer Cropscience Gmbh

Bayer Corporation

Eric Rivadeneira

Klaus Jelich

Vijay C Desai

Vidyanatha A Prasad

Shekhar V Kulkarni

Shekhar Kulkarni

Reinhard Lantzsch

Detlef Wollweber

Werner Lindner

Wolfgang Kr&auml;mer

David M Mayes

The disclosure provides for methods for preparing 2-cyanoimino-1,3-thiazolidine, which is an important building block for the preparation of crop protection active ingredients and pharmaceuticals. To this end, the disclosure provides for more efficient and improved methods of preparing 2-cyanoimino-1,3-thiazolidine.

Procedure for the preparation of 2-cyanoimino-1,3-thiazolidine

Processes for preparing &agr;-substituted benzylnitroguanidines include the steps of providing a reaction mixture comprising water, alcohol, an S-alkyl nitroisothiourea, and an &agr;-substituted benzylamine; heating the reaction mixture; steam distilling the alcohol from the reaction mixture; and isolating an &agr;-substituted benzylnitroguanidine from the remaining water layer.

Processes for the preparation of &agr;-substituted benzylnitroguanidines

The present invention relates to a process for manufacturing substituted triazolinones, which are intermediates in the preparation of herbicidally active compounds. In particular, this invention relates to the alkylation of a non-alkylated triazolinone intermediate product, wherein the improvement comprises conducting the alkylation reaction under pH controlled conditions. In a preferred embodiment, the invention relates to the preparation of a 5-alkoxy(or aryloxy)-2,4-dihydro-3H-1,2,4-triazol-3-one, and the alkylation of this non-alkylated triazolinone intermediate product, to produce a 5-alkoxy(or aryloxy)-4-alkyl-2,4-dihydro-3H-1,2,4-triazol-3-one.

Process for the manufacture of substituted triazolinones

The present invention relates to a process for the preparation of compounds of the formula (I)

Method for producing 1,3-di-substituted 2-nitroguanidines

The present invention relates to a process for manufacturing sulfonylaminocarbonyl triazolinones and salts thereof, which are herbicidally active compounds, wherein the process does not require isolation of the intermediate product. In particular, this invention relates to the conversion of a substituted triazolinone to a sulfonylaminocarbonyl triazolinone, and without the isolation of this intermediate product, the sulfonylaminocarbonyl triazolinone is then converted to a salt thereof.

Process for the manufacture of sulfonylaminocarbonyl triazolinones and

Process for preparing substituted valine amide derivatives

The Application describes a new process for the preparation of alkylcarboxylic acid 4-hydroxyanilides by reaction of aminophenols with carboxylic acid derivatives in organic solvents without the addition of a base reacts.

Process for the preparation of alkylcarboxylic acid 4-hydroxyanilides

A process for the preparation of a 2-halogeno-pyridine of the formula ##STR1## in which X represents halogen and

Process for the preparation of 2-halogeno-pyridine derivatives

A 2-dialkylamino-5-methyl-pyridine of the formula ##STR1## in which R is C.sub.1 -C.sub.4 -alkyl.

Process for the preparation of 2-amino-5-methyl-pyridine

The invention relates to a novel process and novel intermediates for the preparation of 2-amino-5-methylpyridine (I) ##STR1## The process is characterized in that in a first step 3-methyl-pyridine 1-oxide of the formula (II) ##STR2## is reacted with a trialkylamine of the general formula (III)

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Overland Park, KS, United States of America

Eric Rivadeneira