REAGENT

作品数：370被引量：405H指数：8
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相关机构：北京大学武汉大学中南大学华东师范大学更多>>
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  • 期刊=Chemical Research in Chinese Universitiesx
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Unexpected Decarboxamidation of a-Arylsulfonyl Weinreb Amides by Grignard Reagents： Synthesis of a-Disubstituted Arylsulfones
《Chemical Research in Chinese Universities》2017年第2期213-220,共8页LIU Wei LI Houying QIN Haijuan ZHAO Wei ZHOU Chen JIANG Shengping YANG Cheng 
An unexpected decarboxamidation of a-arylsulfonyl Weinreb amides as a side reaction under the standardacylating conditions was found in Weirtreb amides chemistry. The control experiments for mechanism study disclosedt...
关键词：Weinreb AMIDE SULFONE GRIGNARD REAGENT C--C bond CLEAVAGE Decarboxamidation 
Reactivity of Organolithium Reagents to 2,3,4,5-Tetraphenylcyclopentadienone and Crystal Structures of Addition Products
《Chemical Research in Chinese Universities》2015年第5期736-741,共6页ZHANG Xiaoyong HAN Limin ZHU Ning GAO Yuanyuan SUO Quanling 
Supported by the National Natural Science Foundation of China（Nos.21266019, 21062011） and the Inner Mongolia Auto- nomous Region Higher Scientific Research Project, China（No.NJZY14060）.
The conjugate addition reactions of four organolithium reagents to 2,3,4,5-tetraphenylcyclopentadienone （tetracyclone） were investigated to reveal the reactivity of organolithium reagents to tetracyclone. The result...
关键词：Conjugate addition reaction 2 3 4 5-Tetraphenylcyclopentadienone Organolithium reagent Steric hindrance 
2-Hydroxymalonitrile——A Useful Reagent for One-step Synthesis of α-Hydroxy Esters
《Chemical Research in Chinese Universities》2015年第3期321-324,共4页YANG Jianxin YIN Yunxing HE Zhenmin MA Li LI Xin ZHANG Zhiliu LIN Xiaojuan MA Rujian 
the National Natural Science Foundation of China（No.51209024）.
α-Hydroxy carboxylic esters and their derivatives are key substructures in a variety of biologically active natural products and numerous pharmaceuticals[1-3].A variety of methods for the synthesis of α-hydroxyester...
关键词：α-Hydroxy ester One-pot synthesis 2-Hydroxymalononitrile 
Investigation of Light-harvest Material:Synthesis and Characterization of Nanometer Porphyrin Trimer被引量：1
《Chemical Research in Chinese Universities》2004年第3期262-265,共4页SHIYing-yan WANGXing-qiao LIXiang-qing ZHENGWen-qi DINGHong ZHUGuang-shan LIUGuo-fa 
SupportedbytheNationalNaturalScienceFoundationofChina(No .2 0 0 710 14 )
ω -Bromopropylporphyrin ether synthesized from the raction of 1,3-dibromopropane as the bridge-linked reagent and 5-(4-hydroxyphenyl)-10,15,20-triphenylporphyrin (H_2MHTPP) as the matrix reacts with 5,15-di(4- hydrox...
关键词：Nanometer porphyrin trimer ω -Bromopropylporphyrin ether Bridge-linking reagent 
Syntheses of β-Hydroxy Ketones by Organosamarium
《Chemical Research in Chinese Universities》2003年第4期432-433,共2页YU Ming-xin ZHANG Yong-min 
Supported by the National Natural Science Foundation of China( No.2 9872 0 10)
An organosamarium reagent was prepared via the reaction of α -bromoacetophenone with samarium. This organosamarium reagent reacted with aldehydes to give β -hydroxy ketones. A possible reaction process was...
关键词：α-Bromoacetophenone Organosamarium reagent β -Hydroxy ketone 
Cobalt Determination by Means of Flow Injection On-line Sorbent Preconcentration-Flame Atomic Absorption Spectrometry with 1-Nitroso-2-naphthol as a Complexing Reagent
《Chemical Research in Chinese Universities》2001年第3期264-270,共7页YIN Xue-feng ALI Akbar XU Guang-ming LING Yun-yang GAO Jian YE Mei-ying 
Supported by Zhejiang Natural Science Foundation of China.
The suitability of 1-nitroso-2-naphthol(NN) as a complexing agent for on-line preconcentration of cobalt eluted on the C_(18) microcolumn by means of the FI-FAAS system was tested. Various parameters affecting the com...
关键词：Cobalt FI on-line preconcentration AAS 1-Nitroso-2-naphthol 
Theoretical Studies on the Mechanism of Mannich Reaction Involving Iminium Salt as Potential Mannich Reagent(1)--Use Acetaldehyde as Pseudo-acid Component被引量：1
《Chemical Research in Chinese Universities》1997年第4期44-49,共6页XIAO He ming LING Yue ZHAI Yu feng LI Yu min 
This paper is one of a series of reports of theoretical researches on the mechanism of the Mannich reaction using the iminium salt as the potential Mannich reagent. According to the results of AM1 dynamic calcula...
关键词：Potential Mannich reagent Mannich reaction AM1 method Activation energy 
Facile Preparation and Application of Polystyrylsulfonyl Chloride Resins
《Chemical Research in Chinese Universities》1991年第2期117-118,共2页Huang Wenqiang, Li Chenxi, Bao Rong, Lu Yu, Pan Tongtong,Men Aiju, Yin Yaorong and He Binglin (Institute of Polymer Chemistry, Nankai University, Tianjin) 
Supported by the National Natural Science Foundation of China
Polystyrylsulfonyl chloride resin (1) is a useful polymer intermediate in organic syntheses. Resin 1 can be obtained by chlorosulfonation of styrenedivinylbenzene copolymers, or treatment of the sulfonated copolymer d...
关键词：Polystyrylsulfonyl chloride resin Polymer-supported flouride reagent Deprotection 
STUDIES ON THE DISSOCIATION OF THE RARE-EARTH CHROMOGENIC REAGENT CHLOROPHOSPHONAZO-mA
《Chemical Research in Chinese Universities》1986年第1期55-64,共10页
Chlorophosphonazo-mA [2-(4-Chloro-2-phosphonobenzenenazo)-7-(3-ac-etylbenzenenazo)-1,8-dihydroxynaphthalene-3,6-disulfonic acid] is a derivative of unsyr.metrical bisazo chromotropic acid,with the following structureI...
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