云南高校图书馆联盟文献共享服务平台- CYCLOPROPANATION

CYCLOPROPANATION: 作品数：33被引量：21H指数：3; 导出分析报告; 相关领域：理学更多>>; 相关作者：刘永军李中军孟祥豹李庆李云锋更多>>; 相关机构：中国科学院北京大学山东大学河南大学更多>>; 相关期刊：《Science China Chemistry》《Chinese Journal of Reactive Polymers》《Chemical Research in Chinese Universities》《Science Bulletin》更多>>; 相关基金：国家自然科学基金中国博士后科学基金国家重点基础研究发展计划更多>>

Cyano migration-mediated radical-polar crossover cyclopropanation: 《Science China Chemistry》2025年第1期241-248,共8页Ziqiang Wang Yasu Chen Jie Li Chen Zhu; supported by the National Natural Science Foundation of China(22171201,22371185);the Fundamental Research Funds for the Central Universities(22X010201631);the Program of Shanghai Academic/Technology Research Leader(23XD1421900)。; We report a novel cyano migration-mediated radical-polar crossover process,whereby both the sulfonylcyanation of aliphatic alkenes and the formation of cyclopropanes are concurrently achieved.This transformation yield...; 关键词：CYCLOPROPANATION cyano migration radical-polar crossover radical reactions

Visible-light-induced organocatalyzed C(sp^(2))–H bond functionalization of 1,3-azoles with trifluoroacetylsilanes: 《Science China Chemistry》2024年第11期3662-3668,共7页Zhengyu Li Zeguo Zhang Zhihan Zhang Gang Zhou Yizhi Zhang Shanshan Liu Xiao Shen; supported by the National Key R&D Program of China (2022YFA1506100);the National Natural Science Foundation of China (21901191);the Fundamental Research Funds for the Central Universities (2042023kf0202);the China Postdoctoral Science Foundation (2023TQ0250)。; Previous carbene insertion to C–H bonds of 1,3-azoles relied on metal carbene species. Herein, we report a metal-free C(sp^(2))–H bond functionalization of 1,3-azoles with trifluoroacetylsilanes. The reaction featur...; 关键词：C(sp^(2))–H bond functionalization CARBENES BIRADICALS CYCLOPROPANATION brook rearrangement

Photocatalyzed[2+1]cyclization of alkenes and silylated trifluorodiazoethanes:facile entry into(difluoromethylene)cyclopropanes被引量：1: 《Science China Chemistry》2023年第11期3141-3147,共7页Suo Chen Yizhi Zhang Shanshan Liu Xiao Shen; supported by the National Key Research and Development Program of China(2022YFA1506100);Shenzhen Science and Technology Program(JCYJ20220818100604009);Guangdong Basic and Applied Basic Research Foundation(2021A1515010105,2023A1515010601)。; Methylenecyclopropanes are among the most robust building blocks in synthetic chemistry,but the study on(difluoromethylene)-cyclopropanes is rather limited,because of the difficulty in the synthesis of these compounds...; 关键词：triplet carbene CYCLOPROPANATION METHYLENECYCLOPROPANES (difluoromethylene)cyclopropanes

Alternative Construction of the Core of Lindenane Sesquiterpenoid: 《Chinese Journal of Chemistry》2023年第16期1931-1936,共6页Cichang Ling Zhengsong Huang Yuqiao Zhou Shaomin Fu Bo Liu; NSFC(21925106,21901170);Sichuan University(2020SCUNL204).; Comprehensive Summary Alternative synthetic routes toward the tricyclic core of lindenane sesquiterpenoid are presented herein.The route A features an asymmetric organocatalysis enabling desymmetric silylation of diol...; 关键词：TERPENOID Lindenane Total synthesis DESYMMETRIZATION EPOXIDATION Nucleophilic substitution CYCLOADDITION CYCLOPROPANATION

Blue light-promoted cyclopropenizations of N-tosylhydrazones in water: 《Chinese Chemical Letters》2021年第12期3984-3987,共4页Kaichuan Yan Hua He Jianglian Li Yi Luo Ruizhi Lai Li Guo Yong Wu; supported by the National Natural Science Foundation of China (Nos. 81373259;81573286, 81773577;81602954)。; Carbene transfer reactions play an important role in the field of organic synthesis because of their ability to construct a variety of molecules. Herein, we reported on blue light-induced cyclopropenizations of N-tosy...; 关键词：N-Tosylhydrazone CARBENE METAL-FREE Cyclopropenization CYCLOPROPANATION

K3PO4-Promoted Cyclopropanation of Electron-deficient Alkenes with 2-Bromo-1,3-Propanedione Compounds: 《Chemical Research in Chinese Universities》2019年第6期1002-1007,共6页CHEN Zhanguo WEN Ting HOU Dan; Supported by the Natural Science Foundation of Shaanxi Province,China(No.2009JM2001);the Innovation Foundation of Postgraduate Cultivation of Shaanxi Normal University,China(No.2008CXB009).; An easy and efficient method for the synthesis of multisubstituted cyclopropane derivatives from electron-deficicent alkenes with 2-bromo-1,3-propanedione compounds was described.For this method,ethylα-cyanocinnamate...; 关键词：CYCLOPROPANATION Multisubstituted CYCLOPROPANE DERIVATIVE Electron-deficicent ALKENE 2-Bromo-l 3-propanedione compound

Z-bpy,a New C2-Symmetric Bipyridine Ligand and Its Application in Enantioselective Copper(Ⅰ)-Catalyzed Cyclopropanation of Olefins被引量：3: 《Chinese Journal of Chemistry》2019年第8期807-810,共4页Yizhao Ouyang Miao Zhan Jing Zhou Jiao Jiao Hao HU Yoichi M.A.Yamada Pengfei Li; provided by the National Natural Science Foundation of China (Nos.21672168 and 21702157);China Postdoctoral Science Foundation (No.2017M623148);the National Postdoctoral Program for Innovative Talents (No.BX201600122);Key Laboratory Construction Program of Xi'an Municipal Bureau of Science and Technology (No.201805056ZD7CG40).; Summary of main observation and conclusion A rigid C2-symmetric chiral bipyridine ligand Z-bpy with a triptycene-like backbone was designed and synthesized from simple chemicals in a scalable route.Using this new liga...; 关键词：ITS was

Cyclopropanation of active methylene compounds with β-alkoxycarbonyl vinylsulfonium salts: 《Chinese Chemical Letters》2019年第2期406-408,共3页Shenquan Guo Niuniu Zhang Xiangzheng Tang Zhifeng Mao Xuejing Zhang Ming Yan Yining Xuan; the National Natural Science Foundation of China (Nos. 21772240, 21472248);National Science and Technology Major Project of the Ministry of Science and Technology of China (No. 2017ZX09305010);Guangzhou Science Technology and Innovation Commission(No. 201707010210);Department of Science and Technology of Guangdong Province(Nos. 2017A020211011,2017A020211027);China Scholarship Council (No. 201608440090); An efficient synthesis of β-alkoxycarbonyl vinylsulfonium salts had been developed. Their reaction with indene-1,3-diones and other active methylene compounds provided cyclopropane carboxylates in good yields. A tent...; 关键词：Vinylsulfonium SALT ACTIVE METHYLENE COMPOUND CYCLOPROPANATION

Co(Ⅲ)/Zn(Ⅱ)-catalyzed dearomatization of indoles and coupling with carbenes from ene-yne ketones via intramolecular cyclopropanation: 《Chinese Journal of Catalysis》2018年第12期1881-1889,共9页Na Li Junbiao Chang Lingheng Kong Shuangjing Wang Dandan Wang Miao Cheng Xingwei Li; 国家自然科学基金(21525208,21472186);河南师范大学研究基金(5101034011009).; A straightforward and efficient protocol for dearomatizing indoles is described.The reaction,catalyzed by an inexpensive Co(III)/Zn(II)catalyst,starts from easily accessible N‐pyrimidinyl indoles and ene‐yne ketones...; 关键词：Co(III)/Zn(II)catalysis DEAROMATIZATION CYCLOPROPANATION CARBENE Indole

Palladium-catalyzed oxidative cyclopropanation of enamides and norbornenes initiated by C–H activation被引量：1: 《Science China Chemistry》2018年第6期695-701,共7页Ming Chen Mi-Na Zhao Yao-Du Zhang Zhi-Hui Ren Zheng-Hui Guan; supported by the National Natural Science Foundation of China (NSFC-21622203, 21472147, 21702161);the China Postdoctoral Science Foundation Funded Project (2017M610644);Fund of Northwest University (334100036); A novel palladium-catalyzed oxidative cyclopropanation of enamides and norbornenes has been developed. The reaction proceeded through palladium-catalyzed vinyl C–H bond activation of enamides followed by two migrator...; 关键词：PALLADIUM-CATALYZED CYCLOPROPANATION C–H activation ENAMIDES NORBORNENES

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