Pd2+-Catalyzed Addition of 1-Substituted Tetrazole-5-thiols to Terminal Acetylenes in Acid Medium
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Addition of 1-substituted tetrazole-5-thiols to ethyl propiolate and phenylacetylene was studied. It was found that Pd(II) salts in the presence of strong acids are effective catalysts for this reaction: the S-adducts can be obtained at relatively low temperatures in high yields. The mechanism of this reaction was suggested.
Keywords1-substituted tetrazole-5-thiols terminal acetylenes addition catalysis palladium compounds
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