The unprecedented ring transformation from thiazoline-spiro-thiophene to thieno[2,3-b]pyrazine involved in the reaction of 2-thiocarbamoyl thiazolium salts with dimethyl acetylenedicarboxylate |
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| Authors: | Ma Yang Guang Cheng Ying |
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| Institution: | Chemistry Department, Beijing Normal University, Beijing, 100875, China. |
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| Abstract: | Reaction of 2-thiocarbamoyl thiazolium salts with dimethyl acetylenedicarboxylate proceeded via a tandem 3+2] cycloaddition and a unprecedented ring transformation to produce functionalized thieno2,3-b]pyrazine derivatives in good to excellent yields. |
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