A One-Pot Entry to a Novel 3-H-benzo[d]pyrazolo[1,5-b]isothiazole Ring System |
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| Authors: | Paola Vicini Matteo Incerti Rocco Ferretti Franca Zanardi |
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| Affiliation: | (1) Dipartimento Farmaceutico, Università degli Studi di Parma, Parco Area delle Scienze 27/A, 43100 Parma, Italy |
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| Abstract: | Summary The phosphorus ylide obtained from the reaction between 2-aminobenzo[d]isothiazol-3-one and dimethyl acetylenedicarboxylate in the presence of triphenylphosphine undergoes a smooth intramolecular Wittig-type reaction to produce, in a one-pot reaction, 3-H-benzo[d]pyrazolo[1,5-b]isothiazole-2,3a-dicarboxylic acid dimethyl ester, a novel functionalized heterocyclic compound. |
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| Keywords: | 3-H-benzo[d]pyrazolo[1,5-b]isothiazole novel heterocyclic ring system tandem reaction one-pot reaction intramolecular Wittig reaction 1,2-methyl ester shift phosphorous ylide |
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