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Cu( II )-Catalyzed C2-site functionalization of p-aminophenols: an approach for selective cross-dehydrogenative aminations

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Organic Chemistry Frontiers 2022年第4期9卷 1010-1015页

作者： Xin Zhao Fang Yang Lin-Lin Wang Jing Guo Yu-Qin Xu Zi-Sheng Chen Kegong Ji College of Chemistry and Pharmacy Northwest A&F UniversityShaanxi Key Laboratory of Natural Products&Chemical Biology3 Taicheng RoadYangling712100 ShaanxiP.R.China School of Pharmacy Baotou Medical CollegeBaotou 014060Inner MongoliaP.R.China Guangdong Provincial Key Laboratory of Catalysis Southern University of Science and TechnologyShenzhen 518055China

Site selective cross dehydrogenative aminations from precursors without preactivated C–H and N–H bonds have been ***,a copper-catalyzed C2-site selective amination of p-aminophenol derivatives with arylamines has been *** approach precludes both partners from prefunctio-nalization and yields single site selective aminated *** reaction proceeds smoothly with air as a terminal oxidant to produce the corresponding C2-site functional aminophenol derivatives in moderate to good yields.

关键词： smoothly approach bonds

Driving Economic Growth with High-Quality Development of Manufacturing

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Frontiers of Economics in China-Selected Publications from Chinese Universities 2022年第3期17卷 535-540页

作者： GUO Kesha School of Economics and Finance Huaqiao UniversityXiamen 361021China

Promoting the high-quality development of manufacturing is a core part of China's high-quality economic development and an important foundation for accelerating socialist *** to research,high-income economies value the high-quality development of manufacturing at the middle-income stage to spur stable growth and high-quality development of the economy,making a significant contribution to smoothly entering the high-income *** lessons from their experience,at the new stage of development,China should pursue medium-and long-term strategies and industrial policies that promote high-quality development of manufacturing and thus drive high-speed growth and high-quality development of the economy,in which way China can accelerate its entry into the ranks of high-income economies as well as socialist modernization.

关键词： income smoothly Drawing

An Exact Solution with Exit in the New Inflationary Universe Model

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Chinese Physics Letters 2001年第7期18卷 997-999页

作者：王文福 Department of Industrial Automation Southwest Petroleum InstituteNanchong 637001

Taking the cosmological expansion rate directly as a function of the inflaton field jinstead of as a function of time,we present a new exact solution to Einstein's equations that describe the evolution of inflationary universe *** includes a solution which has nearly exponential inflation for,and then develops smoothly towards radiation-like evolution *** inflation is driven by the evolution of scalar field with inflation potential,V()=V0-m^(2)/^(2)+λ/*** spectral index of the scalar density,ns,is computed and ns lies well inside the limits set by the cosmic background explorer satellite.

关键词： scalar smoothly exponential

TBHP-Mediated Oxidative Decarboxylative Cyclization in Water:Directand Sustainable Access to Anti-malarial Polycyclic Fused Quinazolinonesand Rutaecarpine

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Chinese Journal of Chemistry 2020年第11期38卷 1239-1244页

作者： Xingyu Chen Fei Xia Yifan Zhao Ji Ma Yue Ma Dong Zhang Lan Yang Peng Sun Artemisinin Research Center and Institute of Chinese Materia Medica Academy of Chinese Medical SciencesBeijing 100700China

of main observation and conclusion Polycylic fused quinazolinones with anti-malarial activity were synthesized through tert-butyl hydro-peroxide(TBHP)-mediated oxidative decarboxylative cyclization between commercaly vailable isatins and cylic amines in one *** reaction pro-ceeds smoothly in water without additional ransition-metal catalyt,acid and *** newly synthesied products were evaluated to exhibit moderateto good anti-malaril activity against chloroquine drug-sensitive Plasmodium falciparum 3D7 *** this method aso provides direct approach to Rutaecarpine in good yield.

关键词： strain. smoothly oxidative

Cooperative Car-Following Model of Traffic Flow and Numerical Simulation

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Chinese Physics Letters 2012年第10期29卷 101-105页

作者：刘有军张海林何莉 School of Civil Engineering and Mechanics Huazhong University of Science and TechnologyWuhan 430074

Based on the impact of a desired following speed and safe distance on driving behaviour,we establish a cooperative car-following model(CCFM).The dynamics analysis results indicate that no unrealistic deceleration or collision occurs in the ***,this model can describe the kinetic property in the processes of starting and *** addition,evolution of a small perturbation can be reproduced in a numerical *** to the full velocity difference model(FVDM),the CCFM has a wider range of stability and a much smaller blocking region ***,the CCFM averts negative velocity,and is accordingly advanced compared with the comprehensive optimal velocity model(COVM).Moreover,the CCFM describes the deceleration process more smoothly than both the FVDM and COVM.

关键词： smoothly starting desired

Construction of Hainan Free Trade Port in Full Swing

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China News Release 2022年第7期 10-17页

作者： Gu Gang 不详

On April 13,2018,President Xi Jinping attended a ceremony marking the 30th anniversary of the Hainan Special Economic Zone and delivered a major speech,and Hainan has since embarked on a great new journey of deepening reform and opening-up in all *** the past four years,construction on the Hainan free trade port kicked off smoothly and went in full swing with significant progress.

关键词： Hainan smoothly deepening

Embarking on a New Journey, Contributing to the New Era

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Qiu Shi 2022年第2期14卷 61-80页

The Wind at Olympic Training Venues Zhang Shuhong,On the evening of February 16,Zhangjia-kou s Genting Snow Park hosted the freestyle skiing men’s aerials final of the Beijing Winter Olympic *** Lantern Festival had just passed,and the first full moon of the new lunar year shone brightly on the jump *** athlete Qi Guangpu launched himself into the *** a beam of light slicing through the dark,Qi rose high before executing a flip and smoothly returning to his *** flawless jump had secured gold for Qi,and the cold night air bubbled with excitement.

关键词： smoothly bubble himself

The Eurasian Economic Union in the Context of Geopolitical Changes in Europe and Asia

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China International Studies 2023年第2期 52-82页

作者： Li Ziguo Department for Eurasian Studies China Institute of International Studies(CIIS)

Before Russia launched its special military operation against Ukraine,the economic integration process of the Eurasian Economic Union(EAEU),driven by Russia,was generally proceeding smoothly despite internal ***,the Russia-Ukraine conflict and the subsequent extreme sanctions imposed by the West have seriously deteriorated the EAEU’s external environment.

关键词： Eurasian smoothly Russia

Silver-Mediated N-Trifluoromethylation of Amides and Peptides

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Chinese Journal of Chemistry 2020年第9期38卷 924-928页

作者： Zhenzhen Zhang Jiayan He Lin Zhu Haiwen Xiao Yewen Fang Chaozhong Li Key Laboratory of Organofluorine Chemistry Center for Excellence in Molecular SynthesisShanghai Institute of Organic ChemistryChinese Academy of Sciences345 Lingling RoadShanghai 200032China School of Materials and Chemical Engineering Ningbo University of Technology201 Fenghua RoadNingboZhejiang 315211China

Summary of main observation and conclusion We report herein the direct N-trifluoromethylation of N-H *** by AgOTf and 2-fluoro-pyridine,the reaction of a variety of amides with Selectfluor,TMSCF3 and CsF proceeds smoothly at room temperature leading to the corresponding N-trifluoromethylated products in satisfactory *** protocol is also applicable to amino acid derivatives,resulting in efficient and chemoselective W-trifluoromethylation of di-and tri-peptides with retention of configuration.A mechanism involving reductive elimination of Ag(Ⅲ)intermediates to form N—CF3 bonds is proposed.

关键词： smoothly bonds elimination