Elemental Sulfur as Reaction Medium for the Synthesis of Fused Nitrogen Heterocycles by Oxidative Coupling between Cycloalkanones and Nitrogen Nucleophiles
作者:Thanh Binh Nguyen、Pascal Retailleau
DOI:10.1002/adsc.201700919
日期:2017.11.10
Molten elemental sulfur was found to be an excellent reaction medium for oxidative coupling between bis-aza nucleophiles and cycloalkanones to the fused diaza heterocycles. No extensive aromatization was observed when cyclohexanone was used. These reaction conditions tolerate a wide range of functional groups and are applicable to oxidation sensitive o-phenylenediamines.