Synthesis of Novel Dispiro 1,4-Benzothiazine Hybrid Heterocycles Through 1,3-Dipolar Cycloaddition

作者: Karuppiah Malathi , Veerappan Jeyachandran , Karumpan Kalaiselvan , Raju Ranjith Kumar , None

DOI: 10.1080/00397911.2014.965329

关键词: StereoselectivityCycloadditionBenzothiazineChemistry1,3-Dipolar cycloadditionAzomethine ylideOrganic chemistryPyrrolidine

摘要: AbstractThe 1,3-dipolar cycloaddition of azomethine ylides generated in situ from the reaction acenaphthylene-1,2-dione or isatins and α-amino acids to (E)-methyl/ethyl 2-(3-oxo-3,4-dihydro-2H-benzo[b][1,4]thiazin-2-ylidene)acetate led stereoselective formation novel dispiro 1,4-benzothiazine hybrid heterocycles good yields.

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