单质硫催化查尔酮类化合物选择性还原制备二氢查尔酮的研究

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[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，dimetyforaideanselecivelyducechaonetodrohalcone.Thsmethdfaturawide range of applicable substrates， environmental friendliness， simple operation， and excellent yield.

[Keywords] elemental sulfur; chalcone;dihydrochalcone; selective reduction; synthesis

二氢查尔酮类化合物属于查尔酮家族的主要成员，含有1，3-二苯基丙酮基本骨架。（剩余11295字）