Nucleophilic Addition Of γ-Substituted Butenolides And Cyclic N-Sulfimines

In this paper,the nucleophilic addition ofγ-substituted butenolides to cyclic N-sulfimines was studied.Furanones derivatives and benzenesulfonyl cyclic imines were synthesized by different reactions from inexpensive aromatic compounds.After establishing the template reaction,we investigated the factors which includes catalyst species,temperature,solvent,reaction time and the amount of catalyst.The experiment determined the optimum reaction conditions and identified a green nucleophilic substitution reaction.Finally,the effect of substrates on the reaction was investigated by using the optimal conditions.Experiments show that compounds with substituents can react in water,and good yields（up to 95%yield）could be achieved.Their structures were confirmed by ¹H NMR,¹³C NMR and HRMS.