UREAS

作品数：38被引量：30H指数：3
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Non-phosgene route:catalytic carbonylation of amines to form unsymmetrical ureas
《National Science Review》2025年第1期2-3,共2页Shunji Xie Ye Wang 
The production of unsymmetrical ureas,which are widely used in the pharmaceutical field[1],still relies heavily on the multi-steps reaction of two different amines with extremely toxic phosgene as the carbonyl source,...
关键词：AMINES steps CARBONYL 
Photon-induced regeneration of Pd catalyst for carbonylation of amines to ureas
《Chinese Journal of Catalysis》2024年第11期146-151,共6页Junbao Peng Jin Xie Zelong Li Can Li 
国家自然科学基金(22072061);国家重点研发计划(2021YFA15011).
Substituted ureas hold considerable significance in both natural and synthetic chemicals.Pd-based homogenous catalyst has been used for the urea synthesis,however the aggregation of Pd(0)species leads to the deactivat...
关键词：PHOTOCHEMISTRY CARBONYLATION Pd catalysis Pd regeneration UREA 
Metallaphotoredox-Catalyzed Three-Component Couplings for Practical Synthesis of Ureas and Carbamates
《Chinese Journal of Chemistry》2024年第3期264-270,共7页Ernest Koranteng Zhen-Cao Shu Yi-Yin Liu Qian Yang Bin Shi Qiang-Xian Wu Fen Tan Liang-Qiu Lu Wen-Jing Xiao 
the National Natural Science Foundation of Chinaa(Nos.22271113,92256301,21822103,91956201,21820102003 and 21602052);the Natural Science Foundation of Hubei Province(No.2022CFB413);the fund from Central China Normal University for support of this research.
Ureas are widely used in drugs,materials and catalysts because of their diamide structure,which can form strong hydrogen bonds.Therefore,it is of great scientific significance to develop efficient and green methods fo...
关键词：CROSS-COUPLING NICKEL Photoredox catalysis Three-component reaction UREAS CARBAMATES 
Continuous-flow,one-pot synthesis of asymmetrical aromatic ureas from acids and amines via curtius rearrangement
《Journal of Chinese Pharmaceutical Sciences》2022年第12期938-945,共8页Meng Tong Wei Zhan Chengcheng Niu Zemei Ge Runtao Li Xin Wang 
National Natural Science Foundation of China(Grant No.21877005).
In the present study,we described a continuous-flow,one-pot synthesis of asymmetrical ureas using nucleophilic addition reaction of amines to isocyanates derived from acids’Curtius rearrangement.The advantages of thi...
关键词：Continuous-flow reaction Asymmetrical urea Curtius reaction Safety 
Synthesis, Crystal Structure and Antitumor Activity of N-(5-Aryl-1,3,4-thiadiazol-2-yl)-N?-((E)-styryl)ureas
《Chinese Journal of Structural Chemistry》2019年第7期1086-1092,共7页SONG Xin-Jian WANG Xu-Mei SUN Qi HUANG Sheng-Tian WANG Yan 
supported by the National Natural Science Foundation of China(No.21262012);the Natural Science Foundation of Hubei Province(No.2016CFB400)
N-(5-Aryl-1,3,4-thiadiazol-2-yl)-N?-((E)-styryl)ureas 4 a～4 i were designed and synthesized as antitumor agents, and their structures were characterized by IR, 1 H NMR, 13 C NMR,MS and elemental analysis. The single ...
关键词：1 3 4-THIADIAZOLE UREA crystal structure ANTITUMOR activity 
Electrospun Poly(p-dioxanone)/Poly(ester-urethane)ureas Composite Nanofibers for Potential Heart Valve Tissue Reconstruction被引量：3
《Chinese Journal of Polymer Science》2019年第6期560-569,共10页Juan Du Ji-Hu Wang Hai-Yan Yu Yan-Yan Zhang Li-Hui Pu Jin-Cheng Wang Shu-Yang Lu Si-Hao Chen Tong-He Zhu 
financially supported by the Capacity Building Project of Some Local Colleges and Universities in Shanghai (No. 17030501200);the National Natural Science Foundation of China (No. 81501595);Youth Foundation of Zhongshan Hospital (No. 2015ZSQN09);Talent Training Program Foundation for the Excellent Youth Supported by Zhongshan Hospital (No. 2017ZSYQ24);Innovation Fund of Zhongshan Hospital (No. 2017ZSCX05)
Electrospun nanofibrous mats represent a new generation of medical textiles with promising applications in heart valve tissue reconstruction. It is important for biomaterials to mimic the biological and mechanical mic...
关键词：Poly(p-dioxanone) Poly(ester-urethane)ureas Electrospinning Composite NANOFIBER TISSUE engineering 
Triazole Ureas Covalently Bind to Strigolactone Receptor and Antagonize Strigolactone Responses被引量：1
《Molecular Plant》2019年第1期44-58,共15页Hidemitsu Nakamura Kei Hirabayashi Takuya Miyakawa Ko Kikuzato Wenqian Hu Yuqun Xu Kai Jiang Ikuo Takahashi Ruri Niiyama Naoshi Dohmae Masaru Tanokura Tadao Asami 
Strigolactones,a class of plant hormones with multiple functions,mediate plant-plant and plantmicroorganism communications in the rhizosphere.In this study,we developed potent strigolactone antagonists,which covalentl...
关键词：STRIGOLACTONE COVALENT ANTAGONIST TRIAZOLE urea crystal structure 
Anion recognition with porphyrin-bottomed tetraurea receptors被引量：3
《Chinese Chemical Letters》2018年第9期1372-1374,共3页Wei Lin Tian-Yong Cen Shu-Ping Wang Zibin Zhang Jing Wu Jianying Huang Shijun Li 
supported by the National Natural Science Foundation of China(Nos.21572042 and 21773052);the Program for Innovative Research Team in Chinese University(No.IRT 1231);the Natural Science Foundation of Zhejing Province(Nos.LZ16B020002 and LQ17B040002);the Public Welfare Technology and Application Program of Zhejiang Province(No.2015C31141)
Three tetraurea-appended porphyrin derivatives were synthesized and applied as anion receptors to complex with various anions, including F^-, Cl^-, Br^-, I^-, NO3^-, HSO4^-, and AcO^-. The binding stoichiometries were...
关键词：Host-guest chemistry Anion receptors PORPHYRINS Molecular recognition UREAS Supramolecular chemistry 
KI Catalyzed Nitrogenation of Aldehydes and Alcohols： Direct Synthesis of Carbamoyl Azides and Ureas被引量：1
《Chinese Journal of Chemistry》2017年第6期845-848,共4页Song Song Peng Feng Miancheng Zou Ning Jiao 
Financial support from National Basic Research Program of China （973 Program） （No. 2015CB856600）, the National Natural Science Foundation of China （Nos. 21325206, 21632001）, National Young Top-notch Talent Support Program, CAS Interdisciplinary Innovation Team, and Peking University Health Science Center （Nos. BMU20150505, BMU20160541） is greatly ap- preciated. We thank Bencong Zhu and Ao Sun in this group for reproducing the results of 2a and 2k.
An efficient KI catalyzed nitrogenation of aldehydes and alcohols for the direct synthesis of carbamoyl azides and ureas via a radical process has been developed. The simple operating procedures, the readily available...
关键词：NITROGENATION ALDEHYDES carbamoyl azides UREAS KI TBHP 
Selenium-catalyzed Oxidative Carbonylation of Benzylamines to 1,3-Dibenzylureas被引量：1
《Chemical Research in Chinese Universities》2017年第3期384-387,共4页ZHANG Xiaopeng LI Zhengwei WANG Ping FAN Xuesen ZHANG Guisheng 
A facile, efficient and cost-effective approach to 1,3-dibenzylurea was reported. With cheap and recycla- ble nonmetal selenium as catalyst, carbon monoxide instead of phosgene derivatives as earbonylation agent and o...
关键词：SELENIUM Oxidative carbonylation 1  3-Dibenzylurea 
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