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Green Synthesis and Catalysis 2024年第4期5卷 277-281页

作者： Linlin Shi Tiantian Li Wenjing Zhang Weinan Hu Xinju Zhu Yixin Lu Guang-Jian Mei Green Catalysis Center and College of ChemistryZhengzhou UniversityZhengzhouHenan 450001China Department of Chemistry National University of Singapore3 Science Drive 3117543Singapore

visible-light induced direct C–H difluoromethylation of quinoxalinones with 2-((difluoromethyl)sulfonyl)benzo[d]thiazole has been developed for the first time.A broad range of quinoxalinones were well tolerated and reacted with difluorosulfone smoothly to give the corresponding products in moderate to good ***,no external photocatalyst or oxidant was required,which provides a practical and green protocol to access difluoromethylated ***,the control experiments demonstrated a radical mechanism,and the density functional theory(DFT)calculations indicated the radicals were generated through the formation of an electron donoracceptor(EDA)complex.

关键词： Quinoxalinones Difluoromethylation visible-light induced Photocatalyst-free Difluorosulfones

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visible-light induced transition-metal and photosensitizer-free conversion of aldehydes to acyl fluorides under mild conditions

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Green Synthesis and Catalysis 2022年第4期3卷 373-376页

作者： Yatao Lang Xinlong Han Xiangjun Peng Zhong Zheng Chaojun Li Huiying Zeng The State Key Laboratory of Applied Organic Chemistry and the College of Chemistry and Chemical EngineeringLanzhou UniversityLanzhou 730000China Key Laboratory of Prevention and Treatment of Cardiovascular and Cerebrovascular Diseases of Ministry of Education Gannan Medical UniversityGanzhou 341000China Department of Chemistry and FQRNT Centre for Green Chemistry and CatalysisMcGill UniversityMontrealQuebec H3A 0B8Canada

Acyl fluorides are powerful synthons for acylation with wide application in the synthesis of valued compounds,especially ***,a practical and catalyst-free method for the synthesis of acyl fluorides from aldehydes via C(sp^(2))-H fluorination is *** method enables the conversion of both aliphatic and aromatic aldehydes into acyl fluorides in good to excellent yields by visible-light under mild conditions in the absence of transition-metal and external photosensitizer.A variety of functional groups were well tolerated for this *** green method provides a practical pathway to synthesize acyl fluorides under mild conditions.

关键词： visible-light induced Transition-metal and photosensitizer free Acyl fluorides Aliphatic and aromatic aldehydes C(sp2)-H fluorination

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