98847-22-4Relevant academic research and scientific papers
CYCLO-ADDITION REACTIONS OF N-SULPHINYLCARBOXAMIDES. III. REACTIONS OF N-SULPHINYL-p-TOLUAMIDE WITH ALKYNES
Carpanelli, Corrado,Gaiani, Giovanni,Sancassan, Fernando
, p. 265 - 268 (2007/10/02)
N-Sulphinyl-p-toluamide, 1, has been found to behave as a heterodiene towards alkynes in cyclo-addition reactions, giving substituted 1,4,3-oxathiazine 4-oxides, 2.With 1-alkynes the reaction took place regioselectively, yielding 6-substituted cyclo-adducts.The oxidation of compounds 2 gave the corresponding 4,4-dioxides 3 and some of the latter subjected to ring opening by hydrolysis or reduction.
