ONE-POT ARYL-1,4-THIOMORPHOLINE 1,1-DIOXIDE SYNTHESIS VIA DOUBLE 1,4-ADDITION OF IN SITU REDUCED NITROARENES TO DIVINYL SULFONES

[摘要]：One-pot reduction-triggered double aza-Michael type 1,4-addition reactions of various nitroarenes to divinyl sulfones were investigated. In the presence of indium/AcOH in MeOH or in sat. aq NH4Cl/MeOH, nitroarenes and divinyl sulfones were cyclized to give 1,4-thiomorpholine 1,1-dioxides.

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