A dehydroxylative ring-opening Giese reaction of cyclobutanone oximes enabled by photoredox/Ti dual catalysis has been reported in this work.This protocol avoids the prefunctionalization of oximes and the use of stoic...A dehydroxylative ring-opening Giese reaction of cyclobutanone oximes enabled by photoredox/Ti dual catalysis has been reported in this work.This protocol avoids the prefunctionalization of oximes and the use of stoichiometric triarylphosphine reagents.It also features mild conditions,broad substrate scope and good functional group tolerance.The gram-scale reaction,product derivatization,late-stage functionalization of complex pharmaceutical and natural product derivatives,and oligopeptide modification exhibit the potential application of this methodology in synthetic chemistry.展开更多
The accelerating diffusion of information and communication technologies(ICTs)opens up increasing interactions between nations and between social groups at all development levels.The purpose of this study is to asses...The accelerating diffusion of information and communication technologies(ICTs)opens up increasing interactions between nations and between social groups at all development levels.The purpose of this study is to assess the impact of ICTs on the gross domestic product(GDP)of countries at different development levels.The investigation of this study shows that in developing nations,the growth of the ICT sector is mostly consumer-oriented and focussed on the provision of electronic services for ultimate customers.On the contrary,in developed countries,it concentrates on the expansion of digitalisation with increasing socio-economic interaction.In developing nations,the ICT sector’s contribution to the GDP is unlikely to increase.A few exceptions are China,India,Malaysia,and Serbia,which are among the top ten leading economies in terms of the growth of the ICT sector.In general,the role of ICTs in the GDP largely depends on the production structure,level of economic development,and employment rate.The results of this study can be useful for countries’strategic development in ICTs and for improving their digital indicators in the future.展开更多
基金grateful for the financial support from the National Natural Science Foundation of China(Nos.22101135 and 21502096)the Natural Science Foundation of Jiangsu Province(No.BK20150652)+1 种基金the Fundamental Research Funds for the Central Universities(Nos.KYQN2022058,KJQN201629 and XUEKEN2022032)“333 High-Level Talent Project”of Jiangsu Province.
文摘A dehydroxylative ring-opening Giese reaction of cyclobutanone oximes enabled by photoredox/Ti dual catalysis has been reported in this work.This protocol avoids the prefunctionalization of oximes and the use of stoichiometric triarylphosphine reagents.It also features mild conditions,broad substrate scope and good functional group tolerance.The gram-scale reaction,product derivatization,late-stage functionalization of complex pharmaceutical and natural product derivatives,and oligopeptide modification exhibit the potential application of this methodology in synthetic chemistry.
文摘The accelerating diffusion of information and communication technologies(ICTs)opens up increasing interactions between nations and between social groups at all development levels.The purpose of this study is to assess the impact of ICTs on the gross domestic product(GDP)of countries at different development levels.The investigation of this study shows that in developing nations,the growth of the ICT sector is mostly consumer-oriented and focussed on the provision of electronic services for ultimate customers.On the contrary,in developed countries,it concentrates on the expansion of digitalisation with increasing socio-economic interaction.In developing nations,the ICT sector’s contribution to the GDP is unlikely to increase.A few exceptions are China,India,Malaysia,and Serbia,which are among the top ten leading economies in terms of the growth of the ICT sector.In general,the role of ICTs in the GDP largely depends on the production structure,level of economic development,and employment rate.The results of this study can be useful for countries’strategic development in ICTs and for improving their digital indicators in the future.
