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Title
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Catalytic application of N,2-dibromo-6-chloro-3,4- dihydro-2H-benzo[e][1,2,4]thiadiazine-7-sulfonamide 1,1-dioxide as a new catalyst for the synthesis of 9-aryl- 1,8-dioxo-octahydroxanthenes under neutral media
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Type
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JournalPaper
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Keywords
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N,2-dibromo-6-chloro-3,4- dihydro-2H-benzo[e][1,2,4]thiadiazine-7-sulfonamide 1,1-dioxide ,9-aryl- 1,8-dioxo-octahydroxanthenes
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Abstract
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A new N-bromo sulfonamide reagent, namely N,2-dibromo-6-chloro-3,4- dihydro-2H-benzo[e][1,2,4]thiadiazine-7-sulfonamide 1,1-dioxide, was synthesized and used as a new and highly efficient catalyst for the preparation of 9-aryl-1,8-dioxooctahydroxanthene derivatives by the condensation reaction of dimedone (5,5- dimethylcyclohexane-1,3-dione) and various arylaldehydes. Mechanistically, it is interesting that in situ generation of the Br? ion from the catalyst is successfully catalyzed by this reaction under neutral media.
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Researchers
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First-Name Last-Name (Third Researcher), Fatemeh Abbasi (Second Researcher), Ardeshir Khazaei (First Researcher)
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