Tetrahedron letters

[4+ 2]-cycloadditions of thiones with nitrosoalkenes: synthesis of derivatives of 4H-1, 5, 2-oxathiazine, a new heterocyclic system.

…, E Foresti, G Maccagnani, G Mazzanti, P Sabatino…

Index: Bonini, Bianca F.; Foresti, Elisabetta; Maccagnani, Gaetano; Mazzanti, Germana; Sabatino, Piera; Zani, Paolo Tetrahedron Letters, 1985 , vol. 26, # 17 p. 2131 - 2134

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Citation Number: 7

Abstract

Summary: Conjugated nitrosoalkenes, generated in situ via dehydrobromination of a- bromoketoximes, undergo an easy [4+ 21-cycloaddition with thiocarbonyl compounds to give very high yields of the new heterocycles 4H-1, 5, 2-oxathiazines. The thermolysis and the behaviour to oxidation of these adducts were tested.