Novel Reaction of Some Azoles with Dimethyl Sulfoxid

The compounds 4a～4j were prepared by 3a～3j which were prepared from 1a～1j through 2a～2j. The compounds 6a～6j were prepared by the reaction of the products of 4a～4j with dimethyl sulfoxid via Dimroth rearrangement.[1] The compounds ethyl 5-arylamino-1H-1,2,3-triazol-4-carbonates (5a～5d) and ethyl 2-methylthiamethylene-5-arylamino-2H-1,2,3-triazol-4-carbonates (6a～6j) are established by MS, IR, elemental analysis and 1H NMR spectral data. The route of syntheses is shown in Scheme 1.……