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Nucleophilic trifluoromethylation with CF_(3)H/LiHMDS: probing the nucleophilic reactivity of LiCF_(3) species: 《Science China Chemistry》2025年第2期505-512,共8页Yangfan Liu Xiu Wang Chuanfa Ni Jinbo Hu; support of this work by the National Key Research and Development Program of China(2021YFF0701700);the National Natural Science Foundation of China(22271299,22261132514 and 22301308);the Strategic Priority Research Program of the Chinese Academy of Sciences(XDB0590000);the Natural Science Foundation of Shandong Province(ZR2021LFG006 and ZR2023LFG003);the Shandong Dongyue Polymer Material Co.Ltd.is gratefully acknowledged。; The nucleophilic trifluoromethylation involving trifluoromethyllithium(LiCF_(3))species has been an open question since Haszeldine attempted to prepare LiCF_(3) in 1949.Indeed,LiCF_(3) has been used for electrophilic ...; 关键词：nucleophilic trifluoromethylation trifluoromethy llithium fluorinated carbanion negative fluorine effect fluorinated carbenoid

Pincer iridium(Ⅲ)-catalyzed enantioselective C(sp3)-H functionalization via carbenoid C–H insertion of 3-diazooxindoles with 1,4-cyclohexadiene: 《Chinese Chemical Letters》2022年第5期2437-2441,共5页Nan Li Xiaoyan Yang Yanyan Zhu Fang Wang Junfang Gong Maoping Song; supported by a grant from the National Nat-ural Science Foundation of China(No.21472176).; The asymmetric carbenoid C–H insertion of 3-diazooxindoles into 1,4-cyclohexadiene has been accomplished in the presence of chiral bis(imidazoline) NCN pincer iridium(Ⅲ) complexes as the catalysts. With a catalyst l...; 关键词：Asymmetric catalysis C–H functionalization Pincer iridium(III)catalyst Carbenoid C–H insertion 3-Diazooxindole Chiral 3-substituted oxindole

Synthesis of 2-aminothiazoles via rhodium-catalyzed carbenoid insertion/annulation of sulfoxonium ylides with thioureas被引量：1: 《Chinese Chemical Letters》2021年第8期2555-2558,共4页Yuncan Chen Shan Lv Ruizhi Lai Yingying Xu Xin Huang Jianglian Li Guanghui Lv Yong Wu; support from the National Natural Science Foundation of China (Nos.81373259 and 81573286);Sichuan Science and Technology Program (Nos.2020YJ0221 and 2018JY0537)。; Sulfoxonium ylides as carbene precursors couple smoothly with thioureas in the presence of 5 mol% of rhodium(Ⅱ) acetate dimmer via carbenoid insertion to afford the corresponding 2-aminothiazoles with high chemoselec...; 关键词：2-Aminothiazoles Carbene Rhodium Sulfoxonium ylides ANNULATION

Divergent pathways of β,γ-unsaturated α-diazocarbonyl compounds catalyzed by dirhodium and Lewis acids catalysts separately or in combination: 《Chinese Chemical Letters》2015年第2期227-232,共6页Xin-Fang Xu Michael P.Doyle; the National Institutes of Health(No.GM 46503);the National Science Foundation(No.CHE-1212446);the starting funding from Soochow University and Key Laboratory of Organic Synthesis of Jiangsu Province; β,γ-Unsaturated a-diazocarbonyl compounds possess two reactive sites for electrophilic addition-one at the diazo carbon and the other at the vinylogous γ-position.Controlled by catalyst,divergent transformations ar...; 关键词：Divergent synthesis β γ-Unsaturated α-diazocarbonyl compounds Metal carbene（carbenoid） Dirhodium Lewis acid catalyst

Equilibrium Structures and Isomerization Reactions of the Unsaturated Carbenoid H_2Ge=CliF被引量：1: 《Chinese Journal of Structural Chemistry》2008年第1期45-48,共4页李文佐宫宝安程建波肖翠平; Fund for Doctor of Yantai University (HY05B30); The novel carbenoid H2Ge=CLiF was studied by using the DFT B3LYP and QCISD methods. Geometry optimization calculations indicate that H2Ge=CLiF has three equilibrium configurations, in which the three-membered structur...; 关键词：unsaturated carbenoid HzGe=CLiF DFT B3LYP QCISD isomerizafion

Theoretical Studies on Reaction Pathways of Samarium（Ⅱ） Carbenoid Promoteded Cyclopropanation Reaction of Ethylene: 《Chinese Journal of Chemical Physics》2006年第1期69-75,共7页Zhi-yuan Geng Xing-hui Zhang Yong-cheng Wang Ran Fang Li-guo Gao Xiao-xia Chen Cun-yuan Zhao; This work was supported by the Northwest Normal University Science Foundation of Gansu Province （No. NWNU-QN-2001-08）.; In order to have efficient and highly stereoselective cyclopropanating reagents, the cyclopropabation reaction of ethylene promoted with Samarium（Ⅱ） carbenoid [Simmons-Smith（SS）reagent] were studied by means of B...; 关键词：Samarium carbenoid CYCLOPROPANATION Simmons-Smith reaction Density functional theory

1,2 Migration in Carbenoid and Carbene Reactions: 《有机化学》2003年第z1期14-14,共1页MA Ming JIANG Nan SHI Wei-Feng WANG Jian-Bo; 1,2-Hydride,1,2-alkyl and 1,2-aryl migrations are common in free carbene chemistry,and they are also fre quently encountered in the reactions of metal carbenes.In some cases,these migration reactions can compete with ...

Ab Initio Studies on MCH_2(OH) and CH_3OM(M=H, -, Li, Na): 《Chemical Research in Chinese Universities》2000年第2期136-140,共5页WANG Yigui SUN Changjun BIAN Wensheng DENG Conghao; Supported by the National Natural Science Foundation of China(No. 29503019,29773025) and the Chinese Uni-versity Doctoral Foun; MCH 2(OH) and CH 3OM(M=-, Li, Na) were calculated by means of ab initio method at the MP2/631+G* level. The results show that the metals have the ability to localize charge on O in CH 3OM(M= Li, Na). MCH 2(OH)(M=L...; 关键词：CARBANION CARBENOID ETHER LITHIUM SODIUM

Mechanism for the addition of carbenoid CH_2ClLi to formaldehyde: 《Science China Chemistry》2000年第3期240-246,共7页李吉海孙昌俊刘少杰冯圣玉冯大诚; Ab initlo HF/6-31G* calculations have been performed for the addition mechanism of carbenoid CH2CILi with formaldehyde in tetrahydrofuran. An early complex of formaldehyde with CH2CILi is first formed with quite exoth...; 关键词：CARBENOID TRANSITION state reaction PATHWAY ab INITIO calculation.

Ab initio studies on reaction H_2C═C(OH)Li+CH_3^+(CH_3^-): 《Science China Chemistry》1998年第6期587-595,共9页王义贵孙昌俊邓从豪; ProjectsupportedbytheNationalNaturalScienceFoundationofChina (GrantNo .2 97730 2 5 ); The possible structures and isomerizations of H 2C C（OH）Li are studied theoretically by the gradient analytical method at RHF/631+G* level. According to these results, reactions of H 2C C（OH）Li with CH 3 + and CH ...; 关键词：CARBENOID structure ISOMERIZATION ambident REACTIVITY ACYL ANION equivalent.

CARBENOID