Benzonitrile Oxide Cycloadditions with Exocyclic Methylene Benzothiazepine Dioxides
作者:Sarah J. Ryan、Craig L. Francis、G. Paul Savage
DOI:10.1071/ch13444
日期:——
2]thiazepine 1,1-dioxides underwent 1,3-dipolar cycloaddition with benzonitrileoxide, generated in situ, to give isoxazoline spiro adducts. The cycloadditions were completely regioselective to give the hitherto unreported 3,4-dihydro-2H,4′H-spiro[benzo[f][1,2]thiazepine-5,5′-isoxazole] 1,1-dioxide cycloadduct. Where the N-substituent on the sulfonamide cycloaddition precursor was a 2-substituted arene, the