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Recent advances in tertiary amine Lewis base-promoted cycloadditions of allenoates被引量：1: 《Chinese Chemical Letters》2022年第5期2372-2382,共11页Manman Song Jing Zhao Er-Qing Li; the National Natural Science Foundation of China(No.21702189);Key Scientific and Technological Project of Henan Province(No.202102310004);Zhengzhou University(No.JC21253007)of China for financial support.; Lewis base-catalyzed annulations of allenoates have been one of the most powerful synthetic strategies for the synthesis of various valuable cycles,especially in the preparation of biologically active natural products...; 关键词：Lewis base Tertiary amine Annualtion ALLENOATES OLEFIN

Olefin-linked covalent organic frameworks with twisted tertiary amine knots for enhanced ultraviolet detection: 《Chinese Chemical Letters》2022年第5期2621-2624,共4页Qianying Guo Hongyan Ji Lei Yang Daizong Ji Zhaolin Ai Shi Luo Jiatao Sun Yunqi Liu Dacheng Wei; supported by the National Key R&D Program of China(Nos.2021YFE0201400,2018YFA0703200,2020YFA0308800);National Natural Science Foundation of China(Nos.51773041,61890940,21603038,11974045);Shanghai Com-mittee of Science and Technology in China(No.18ZR1404900).; Though Olefin-linked covalent organic frameworks(oCOFs)possess excellentπ-electron delocalization,the barely reversible olefin linkage brings challenges for oCOFs’synthesis and functionalization.Here,we synthesize n...; 关键词：Covalent organic frameworks Olefin linkages Tertiary amine knots Twisted intramolecular charge transfer effect Ultraviolet detection

Carbon-carbon double bond in pillar[5]arene cavity:Selective binding of cis/trans-olefin isomers: 《Chinese Chemical Letters》2020年第12期3230-3232,共3页Xue Zhang Xiaoyang Wang Bin Wang Zhi-Jun Ding Chunju Li; the National Natural Science Foundation of China(Nos.21772118 and 21971192)。; The binding behavior of pillar[5]arenes(P5 As)towards a series of olefin guests((E)-1,4-dichlo robut-2-ene(1 E),(Z)-1,4-dichlo robut-2-ene(1 Z),(E)-but-2-ene-1,4-diol(2 E),and(Z)-but-2-ene-1,4-diol(2 Z),as well as an ...; 关键词：Pillararenes Molecular recognition Supramolecular chemistry OLEFIN ISOMERS

Photopromoted methoxycarbonylation of olefin with methyl formate by Co(OAc)2被引量：1: 《Chinese Chemical Letters》2007年第1期17-20,共4页Ying Na Cui Jing Mei Yin Da Bin Gao Ying Ping Jia Guang Yun Zhou Shen Min Li; The authors are grateful to the National Natural Science Foundations of China(No.20372012);the Natural Science Foundations of Liaoning(No.20032099)for the generous financial support.; The photopromoted methoxycarbonylation of olefin with methyl formate catalyzed by Co（OAc）2 at ambient conditions has been carried out. The results indicated that the reaction activity increased with the increasing t...; 关键词：Mcthoxycarbonylation Methyl formate OLEFIN Photopromoted Cobalt acetate

Synthesis of Dialkyl-substituted Terminal Olefin: 《Chinese Chemical Letters》2005年第9期1213-1216,共4页Shen Yong REN Bao Jian SHEN Qiao Xia GUO; Dialkyl-substituted terminal olefins were synthesized from the coupling reaction of a-olefins which were catalyzed by zirconocene dichloride/methylalumoxane （MAO） catalyst system under mild condition. High yield was...; 关键词：Zirconocene dichloride METHYLALUMOXANE dialkyl-substituted terminal olefin coupling reaction

An Efficient Route to Iodohydrin Using Polymer-supported Hypervalent Iodine(Ⅲ) Reagent: 《Chinese Chemical Letters》2004年第12期1387-1388,共2页Jiang Min CHEN Lu Ling WU Xian HUANG Department of Chemistry, Zhejiang University (Xixi Campus), Hangzhou 310028 Department of Chemistry, Gannan Teachers’ College, Ganzhou 341000; Several iodohydrins are synthesized in fairly high yields by using polystyrene-supportedphenyliodine(Ⅲ)bis(trifluoroacetate).; 关键词：Polystyrene-supported phenyliodine(Ⅲ)bis(trifiuoroacetate) olefin iodohydrins iodohydroxylation.

Studies on Diastereoselective Intramolecular meta-Cycloaddition of Arene to Olefin (Part Ⅱ): 《Chinese Chemical Letters》1998年第4期321-323,共3页Xiu Min SHEN Liang Dong SUN and Cong ZHANG(Department of Chemistry, Beijing Normal University Beijing 100875); The photoinduced intramolecular meta-cycloaddition of bichromophores 1a-1d gave diastereoselectively two types of adducts 2a-2d and 3a-3d respectively. The observed stereochemistry of cycloaddition is rationalized in ...; 关键词：Arene Olefin meta-Cycloaddition DIASTEREOSELECTIVITY

Studies on Diastereoselective Intramolecular meta-Cycloaddition ofArene to Olefin (Part I): 《Chinese Chemical Letters》1998年第2期131-134,共4页Shen, XM Guo, XC Sun, LD Zhang, C; The photoinduced intramolecular meta-cycloaddition of bichromophores 1a-1d gave diastereoselectively two types of adducts, 2a-2d and 3a-3d. respectively. The observed stereochemistry of cycloaddition was rationalized ...; 关键词：ARENE OLEFIN meta-cycloaddition DIASTEREOSELECTIVITY

ESCA　STUDY　OF　DICHLOROZIRCONOCENE／METHYLALUMINOXANE　OLEFIN　POLYMERIZATION　CATALYST　SYSTEM: 《Chinese Chemical Letters》1996年第1期67-70,共4页Tian, J Huang, BT; An investigation has been undertaken by use of ESCA in the characterization of the central metal(Zr)of dichlorozirconocene/methylaluminoxane homogeneous olefin Polymerization catalyst.The change of electron density s...

FACTORS　AFFECTING　THE　CATALYTIC　ACTIVTTIES　OF　THE　Cp2TiCl_2／n－BuLi　SYSTEM　FOR　THE　OLEFIN　HYDROGENATION: 《Chinese Chemical Letters》1994年第8期689-692,共4页Shi Jian LIAO Yun XU Yi Ping ZHANG(Dalian Institute of Chemical Physics. Chinese Academy of Sciences,Dalian,116023Laboratory of Oranometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai 200032)Qi SUN Ren An; The catalyst System. Cp2TiCl2/n-BuLi, edhibits very high activity for the hydrogenation of 1-octene with a maximum turnover frequency of 71 sec-1. Factors wich strongly affect the activities of this catalyst system ha...

OLEFIN