A catalyst don’t appear in the overall stoichiometry of the reaction it catalyzes, Category: thiazines, but it must appear in at least one of the elementary reactions in the mechanism for the catalyzed reaction. 7689-03-4, Name is Campathecin, molecular formula is C20H16N2O4. In an article, author is Khodairy, A.,once mentioned of 7689-03-4.
The Reaction of 1-Phenylpyrazolidine-3,5-dione with Active Nitriles Using Phase Transfer Catalysis Conditions Technique
Heterocyclization reaction of 1-phenylpyrazolidine-3,5-dione with some active nitriles and acrylonitriles is described. These cyclization reactions afforded novel heterocyclic derivatives such as pyrano[2,3-c]pyrazoles, pyrazolyl-thiazole, pyrazolyl-1,3-thiazines, and pyrazolyl-1,3-oxathiino[6,5-c]pyrazoles. Heating 1-phenylpyrazolidine-3,5-dione alone under phase transfer catalysis conditions afforded the tricyclic dipyrazolofurandione. The structure of the new products has been characterized by IR, NMR, mass spectra, and their elemental analyses.
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Reference:
Thiazine – an overview | ScienceDirect Topics,
,Thiazine | C4H5NS – PubChem