INTERMEDIATES

作品数：164被引量：255H指数：8
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Efficient nitrate electroreduction over Mn-doped Cu catalyst via regulating N-containing intermediates adsorption configuration
《Science China Chemistry》2024年第6期1969-1975,共7页Limin Wu Shunhan Jia Libing Zhang Ruhan Wang Jiaqi Feng Xiaofu Sun Buxing Han 
supported by the National Natural Science Foundation of China(22293015,22203099,and 22121002);Strategic Priority Research Program(A)of the Chinese Academy of Sciences(XDA0390400);Photon Science Center for Carbon Neutrality。
The electrochemical reduction of NO_(3)^(-)to NH_(3)holds promise for economic and environmental benefits,presenting an energyefficient alternative to the traditional Haber-Bosch method.However,challenges exist due to...
关键词：nitrate reduction ELECTROCATALYSIS ammonia synthesis N-intermediate green chemistry 
Silver-catalyzed unstrained C(CO)–alkyl bond scission via[3+2]/retro-[3+2]cycloaddition of ketones with N-isocyanoiminotriphenylphosphorane
《Science China Chemistry》2021年第7期1157-1163,共7页Zikun Wang Linxuan Li Xueying Zhang Xihe Bi 
provided by the National Natural Science Foundation of China(21871043,21961130376);Department of Science and Technology of Jilin Province(20180101185JC,20190701012GH,20200801065GH);the Fundamental Research Funds for the Central Universities(2412019ZD001,2412019FZ006)。
C(CO)–alkyl bonds are ubiquitous in a variety of organic molecules,and their selective activation and functionalization are important for the reconstruction of simple ketones into valuable building blocks.However,due...
关键词：silver-catalyzed C-C bond scission unstrained ketones tertiary alcohol intermediates CYCLOADDITION 
Product yields of stabilized Criegee intermediates in the ozonolysis reactions of cis-2-butene, 2-methyl-2-butene, cyclopentene, and cyclohexene
《Science China Chemistry》2018年第7期850-856,共7页Mixtli Campos-Pineda Jingsong Zhang 
supported by the US National Science Foundation (CHE-1566636);UCMEXUS-CONACYT Doctoral Fellowship
Cavity ring-down spectroscopy(CRDS)was utilized in combination with chemical titration with sulfur dioxide(SO_2)to quantify stabilized Criegee intermediates(s CIs)produced at low pressures(4–20 Torr)in ozonolysis rea...
关键词：ozonolysis stabilized Criegee intermediates cavity ring-down spectroscopy 
Metal-free synthesis of quinolines by direct condensation of amides with alkynes: revelation of N-aryl nitrilium intermediates by 2D NMR techniques被引量：5
《Science China Chemistry》2018年第6期687-694,共8页Jian-Liang Ye Ya-Nan Zhu Hui Geng Pei-Qiang Huang 
supported by the National Key R&D Program of China (2017YFA0207302);the National Natural Science Foundation of China (21332007, 21672176);the Natural Science Foundation of Fujian Province, China (2017J01021);the Program for Changjiang Scholars and Innovative Research Team in University of Ministry of Education, China
Employing triflic anhydride/2-fluoropyridine as an activation system, the coupling reactions of secondary N-aryl amides with terminal alkynes yielded substituted quinolines in moderate to excellent yields. The reactio...
关键词：amide activation ALKYNES QUINOLINES 2D NMR nitrilium 
Concise synthesis of two advanced intermediates for the asymmetric synthesis of polyhydroxylated indolizidine alkaloids被引量：2
《Science China Chemistry》2010年第9期1914-1920,共7页ZHENG Xiao1,2,ZHU WenFang1 & HUANG PeiQiang1 1Department of Chemistry,College of Chemistry and Chemical Engineering,Xiamen University,Xiamen 361005,China 2Key Laboratory of Synthetic Chemistry of Natural Substances Shanghai Institute of Organic Chemistry,Chinese Academy of Sciences,Shanghai 200032,China 
the National Natural Science Foundation of China (20832005);the National Basic Research Program (973 Program) of China (2010CB833200) for financial support
A concise five-step approach to indolizidinones 10 and 11,two advanced intermediates for the asymmetric synthesis of polyhydroxylated indolizidine alkaloids,has been developed by using N-Cbz pyrrolidin-2-yl pyridin-2-...
关键词：indolizidinone SAMARIUM DIIODIDE α-amidohydroxyalkylation TANDEM reaction CHIRAL building block 
6-Membered ring intermediates in polymerization of N-carboxyanhydride-L-α-arginine in H_2O被引量：1
《Science China Chemistry》2009年第8期1220-1226,共7页XIN Liang1,REN Jie1,XIANG JunFeng2,YAN Qin1,XIE Yi1,WANG KongJiang1,LAI PingAn3 & BAI YaDuo3 1 Institute of Biophysics,Chinese Academy of Sciences,Beijing 100101,China 2 Beijing National Laboratory for Molecular Sciences(BNLMS),Centre for Molecular Sciences,Institute of Chemistry,Chinese Academy of Sciences,Beijing 100080,China 3 Beijing Entry-Exit Inspection and Quarantine,Beijing 100026,China 
Supported by the Special Research Project of Beijing Scientific and Technical Committee (Grant No. Z00063002040191);the Natural Basic Research Program of China (Grant No. 2007CB935901)
In polymerization of N-carboxyanhydride-L-α-arginine(L-Arg-NCA) in H2O,nucleophilic reaction of guanidine group with the carbonyl group of L-Arg-NCA leads to quick intramolecular rearrangement,yielding a 6-membered r...
关键词：N-CARBOXYANHYDRIDE L-Arg-NCA INTERMEDIATES L-α-arginine POLYMERIZATION 
STUDIES ON ORGANOSILICON REACTIVE INTERMEDIATES (Ⅴ)~*——STEREOSPECIFIC ADDITION OF CYCLOPROPYLPHENYLSILYLENE TO OLEFINS
《Science China Chemistry》1990年第2期129-137,共9页吴世晖 肖斐 李燕 MAITLAND JONES.JR 
Project supported by the National Natural Science Foundation of China.
This paper reports that cyclopropylphenylsilylene (1) is obtained by photolysis of 2-cyclopropyl-2-phenylhexamethyl-trisilane. 1 added stereospecifically to cis-and trans2-butene gives the corresponding siliranes. Ope...
关键词：ORGANOSILICON compound REACTIVE INTERMEDIATES cyclopropylphenylsilylene PHOTOCHEMICAL reaction. 
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