Reaction of ketenes with N, N??disubstituted α??aminomethyleneketones. XI. Synthesis of 2H??pyrano [3, 2??g] benzothiazole derivatives

L Mosti, G Menozzi, P Schenone

文献索引：Mosti, Luisa; Menozzi, Giulia; Schenone, Pietro Journal of Heterocyclic Chemistry, 1981 , vol. 18, p. 1263 - 1267

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被引用次数: 8

摘要

Abstract Cycloaddition of dichloroketene to N, N-disubstituted 6-aminomethylene-5, 6- dihydro-2-phenylbenzothiazol-7-(4H) ones gave in good yield N, N-disubstituted 4-amino-3, 3-dichloro-3, 4, 5, 6-tetrahydro-8-phenyl-2H-pyrano [3, 2-g] benzothiazol-2-ones II, which are derivatives of the new heterocyclic system 2H-pyrano [3, 2-g] benzothiazole.