43222-48-6Relevant articles and documents
Method of preparing 1,2-dimethyl-3,5-diarylpyrazolium methylsulfates
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, (2008/06/13)
A process for the preparation of 1,2-dimethyl-3,5-diaryl-pyrazolium methylsulfates of the formula I STR1 where R1 and R2 independently of one another are hydrogen, C1 -C4 -alkyl, C3 -C8 -cycloalkyl, C1 -C4 -alkoxy, halogen, nitro, C1 -C4 -haloalkyl or aryl all of which are inert under the reaction conditions, in which 1-methyl-3,5-diarylpyrazoles of the formula II STR2 where R1 and R2 have the abovementioned meanings are reacted with a) methanol and SO3, b) methanol and sulfuric acid or optionally, c) methanol and methylsulfuric acid elevated temperatures.
Substituted pyridinesulfonamide compounds or their salts, process for preparing the same, and herbicides containing the same
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, (2008/06/13)
A substituted pyridinesulfonamide compound or its salt represented by the following general formula (I): wherein R1 is an unsubstituted or substituted alkyl group; R2 is an unsubstituted or substituted alkyl group, or an unsubstituted or substituted alkoxy group; and X and Y are each independently a member selected from the group consisting of alkyl groups and alkoxy groups, is disclosed. This compound is useful as the effective ingredient of a herbicide showing a wide weed-control spectrum even if used in a small amount.
Solid compositions of a pyrazolium salt, urea and a liquid surfactant
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, (2008/06/13)
There are provided solid herbicidal compositions comprising a molecular solution of a liquid, non-ionic surfactant, a 1,2-dimethyl-3,5-diphenylpyrazolium salt and urea in one another. There is also provided a method for preparing said compositions which comprises the steps of melting together the components of the composition at elevated temperatures and then cooling said melt.