Heteropoly acids efficiently catalyzed the cyclocondensation reaction of anthranilamide with aldehydes in water at ambient temperature and afforded the corresponding 2,3-dihydro-4（1H）-quinazolinones compounds in goo...Heteropoly acids efficiently catalyzed the cyclocondensation reaction of anthranilamide with aldehydes in water at ambient temperature and afforded the corresponding 2,3-dihydro-4（1H）-quinazolinones compounds in good to excellent yields.This method provides mild reaction conditions and clean reaction profiles,using a small quantity of catalyst and a simple workup procedure.展开更多
The first Chinese Chemical Letters(CCL)Organic Chemistry Forum was held in Xiamen of Fujian in Jan.2018,followed by the successful events in Zhengzhou of Henan in Dec.2019 and Linzhi of Tibet in July 2021.The series o...The first Chinese Chemical Letters(CCL)Organic Chemistry Forum was held in Xiamen of Fujian in Jan.2018,followed by the successful events in Zhengzhou of Henan in Dec.2019 and Linzhi of Tibet in July 2021.The series of forums aim to build a high-level organic chemistry academic exchange platform for(Chinese)youthful organic chemists,fully showcase their latest fron-tier achievements,and enhance the international level of organic chemistry in China.At the same time,the convening of the series of forums has also played a positive role in promoting the devel-opment of China’s scientific journal publishing,accelerating the re-alization of the strategic goal of building a world-class journal.展开更多
Single-atomic catalysts(SACs)caught considerable attention due to their unique structural properties,complete exposed active site,and 100%atom utilization efficiency with remarkable catalytic activity.Mesoporous singl...Single-atomic catalysts(SACs)caught considerable attention due to their unique structural properties,complete exposed active site,and 100%atom utilization efficiency with remarkable catalytic activity.Mesoporous single-atomic cobalt catalyst with Co-N_(4) active sites was synthesized by using nitrogen-doped graphene derived from acrylonitrile.Single-atomic cobalt was observed by aberration-corrected high-angle annular dark-field scanning transmission electron microscopy(HAADF-STEM)in Co@Nx-C-800.Notably,the density functional theory(DFT)calculation and the extended X-ray absorption fine structures(EXAFS)fitting results indicate that the coordination structure of Co-N is four-coordinated.In this work,the practical hydrogenation of nitroarenes to anilines enabled by Co@Nx-C-800 was established with excellent yields and selectivity,which proved its advantages and potential applications.展开更多
基金the financial support of Key Laboratory of Resources and Environment Chemistry of West China(No.XZ0704).
文摘Heteropoly acids efficiently catalyzed the cyclocondensation reaction of anthranilamide with aldehydes in water at ambient temperature and afforded the corresponding 2,3-dihydro-4（1H）-quinazolinones compounds in good to excellent yields.This method provides mild reaction conditions and clean reaction profiles,using a small quantity of catalyst and a simple workup procedure.
文摘The first Chinese Chemical Letters(CCL)Organic Chemistry Forum was held in Xiamen of Fujian in Jan.2018,followed by the successful events in Zhengzhou of Henan in Dec.2019 and Linzhi of Tibet in July 2021.The series of forums aim to build a high-level organic chemistry academic exchange platform for(Chinese)youthful organic chemists,fully showcase their latest fron-tier achievements,and enhance the international level of organic chemistry in China.At the same time,the convening of the series of forums has also played a positive role in promoting the devel-opment of China’s scientific journal publishing,accelerating the re-alization of the strategic goal of building a world-class journal.
基金supported by the National Natural Science Foundation of China(Nos.22061017 and 21862006)Science and technology program of Gansu Province(Nos.22YF7GG127 and 23JRRG0002)Hexi University Research Start-up Fund Project(Nos.KYQD2020013).
文摘Single-atomic catalysts(SACs)caught considerable attention due to their unique structural properties,complete exposed active site,and 100%atom utilization efficiency with remarkable catalytic activity.Mesoporous single-atomic cobalt catalyst with Co-N_(4) active sites was synthesized by using nitrogen-doped graphene derived from acrylonitrile.Single-atomic cobalt was observed by aberration-corrected high-angle annular dark-field scanning transmission electron microscopy(HAADF-STEM)in Co@Nx-C-800.Notably,the density functional theory(DFT)calculation and the extended X-ray absorption fine structures(EXAFS)fitting results indicate that the coordination structure of Co-N is four-coordinated.In this work,the practical hydrogenation of nitroarenes to anilines enabled by Co@Nx-C-800 was established with excellent yields and selectivity,which proved its advantages and potential applications.
