Photocatalytic Aerobic Oxysulfonylation of Alkynes to Access β-Keto Sulfones Catalyzed by OVs-N-Nb_(2)O_(5)
作者机构：CAS Key Laboratory of Bio-based MaterialsQingdao Institute of Bioenergy and Bioprocess TechnologyChinese Academy of SciencesShandong Energy InstituteQingdaoNewEnergyShandongLaboratoryQingdaoShandong266101China Schoolof Chemistry and Materials ScienceNanjing Normal UniversityNanjingJiangsu 210023China
出 版 物：《Chinese Journal of Chemistry》 (中国化学（英文版）)
年 卷 期：2022年第40卷第22期
页 面：2618-2624页
核心收录：
学科分类：081704[工学-应用化学] 07[理学] 08[工学] 0817[工学-化学工程与技术] 070303[理学-有机化学] 0703[理学-化学]
基 金：supportof the National Natural Science Foundation of China(Nos.22002178,22078350) the Natural Science Foundation of Shandong Province(ZR2020KB016) Shandong Energy Institute Fund(Grant No.SEll202138) Y.Y.alsothanks the Royal Society(UK)fora Newton Advanced Fellowship(NAF/R2/180695)
主 题：Oxygen vacancies Semiconducts Photocatalysis Oxysulfonylation of alkynes β-Keto sulfones
摘 要：Herein,we report a novel heterogeneous photocatalyst for radical-mediated oxidative oxysulfonylation of alkynes toβ-keto sulfones under environmentally benign *** oxygen vacancy-rich semiconductor Nb2O5(labeled as OVs-N-Nb_(2)O_(5))could efficiently catalyze a wide range of alkynes,especially for those bearing electron-deficient substituents or internal alkynes,to their correspondingβ-keto sulfones in good to high yields with good tolerance of diverse functional groups under visible-light *** late-stage modification of steroidal compounds and synthesis of bioactive molecules were also achieved via this procedure,highlighting its potential for practical ***,the photocatalyst OVs-N-Nb_(2)O_(5) showed outstanding catalytic stability for successive recycles without appreciable loss in activity and *** critical role of oxygen vacancies on improving reaction activity and selectivity was clearly disclosed via control experiments and theoretical calculation.
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