[中图分类号]R284.3 [文献标志码]A [文章编号]doi：10.3969/j.issn.1674-070X.2025.04.011

    [Abstract]Objective To investigate thesynthetic method for preparing dihydrochalcones byselectivelyreducing chalcones using water asthehydrogensourceunderthecatalysisof elemental sulfur.Methods Chalcone wasusedasa model substrateto investigatetheoptialreactionconditions，andthinfluenceofdfrenttypesofsubstituentsonthereactionyieldwasexamined. Results Theoptialreactionconditionwereasfolows：0.5mmolofchalcone，1.25equivalentsofelementalsulfur，2.5quivalents of 1，4-diazabicyclo [2.2.2]octane， 400μL of water，and 2.5 mL of N，N-dimethylformamide，with the reaction conducted at 120^°C for 12hunderN2protectionAseriesofdihydrochalcones wereefectivelyobtainedintheexpansionofthesubstratescope，andtheir structures were confirmed by ¹H -NMR， ¹³C -NMR， and HR-ESI-MS. Conclusion The system of elemental sulfur/water/l， 4- (204号 diazabicyclo2ctane/N ......