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US 6,248,896 B1Granted
Process for the preparation of dithiazolyl disulfides
AssigneeBayer Aktiengesellschaft
InventorsWilfried Nolte, Heinrich Königshofen, Adolf Sicheneder
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Abstract
The invention relates to a new process for the preparation of dithiazolyl-(2,2′)-disulfides by oxidation of 2-mercaptothiazoles, to the dithiazolyl-(2,2′)-disulfides that can be obtained in this way, and to the use thereof.
Claims4
A process for the preparation of a dithiazolyl-(2,2′)-disulfide of the general formula
- wherein
- R and R1 may be the same or different and each represents hydrogen, halogen, nitro, hydroxyl or optionally substituted C1-C12 alkyl, C1-C12 alkoxyl, C6-C12 cycloalkyl, C1-C12 aryl or jointly form the residue
- wherein
- R2, R3, R4 and R5 have the same meaning as R and R1, consisting essentially of the step of oxidizing a substituted 2-mercaptothiazole with oxygen or an oxygen-containing gas in the presence of a solvent wherein said solvent is not water, and a tertiary amine and also an organic iron compound wherein said organic iron compound is iron hemiporphyrazine.
1 more element
Dependencies are inferred from the claim text.