Carbene相关论文
Carbene transfer reactions play an important role in the field of organic synthesis because of their abil-ity to constru......
Visible light and base promoted O-H insertion/cyclization of para-quinone methides with aryl diazoac
A visible light and base promoted O-H insertion/cyclization of para-quinone methides with aryl diazoacetates is develope......
Synthesis of 2-aminothiazoles via rhodium-catalyzed carbenoid insertion/annulation of sulfoxonium yl
Sulfoxonium ylides as carbene precursors couple smoothly with thioureas in the presence of 5 mol％ of rhodium(Ⅱ) acetate ......
Cyclic(Alkyl)(amino)carbene Ligands in Selective Arene Hydrogenation and Low-Valent Chromium Catalys
The use of electron-rich cyclic(alkyl)(amino)carbenes(CAACs)as ligands in rhodium-catalyzed chemo-and stereoselective hy......
Copper-hydrides have been intensively studied for a long time due to their utilization in a variety of technologically i......
Highly efficient NHC-iridium-catalyzedβ-methylation of alcohols with methanol at low catalyst loadin
The methylation of alcohols is of great importance since a broad number of bioactive and pharmaceutical alcohols contain......
Hierarchical self-assembly of crown ether based metal-carbene cages into multiple stimuli-responsive
The hierarchical self-assembly(HSA) strategy widely utilized in biological systems has been applied in artificial system......
The block correlated coupled cluster (BCCC) method, with the complete active-space self-consistent-field (CASSCF) refere......
The geometries and bonding characteristics of the first-row transition-metal carbene cations MCH<sub>2</sub><sup>+</sup>......
The insertion and abstraction reaction mechanisms of singlet and triplet CCl2 with CH3MH (M=O, S) have been studied by u......
本文研究了乙氧羰基甲烯对戊烷、己烷、庚烷和辛烷的插入反应。用色谱-质谱联用法分离并鉴定了插入反应得到的各种异构体,以及测定......
Rhodium(Ⅰ)-Catalyzed Enantioselective C(sp3)—H Functionaliza-tion via Carbene-Induced Asymmetric Int
Main observation and conclusionrnTransition-metal-catalyzed C—H insertion of metal-carbene represents an excellent and ......
A visible light-promoted reaction of donor/acceptor diazoalkanes with sulfoxides towards the synthesis of synthetically ......
A facile and efficient strategy for the synthesis of 5-aryl-2-(quinolin-2-yl)oxazoles via rhodium-catalyzed formal[3+2]c......
Synergy of activating substrate and introducing C-H…O interaction to achieve Rh2(Ⅱ)-catalyzed asymme
We report the first Rh2(Ⅱ)-catalyzed asymmetric cycloisomerization of activated enynes to provide cyclopropane-fused te......
The bis-benzimidazolium salt bis[2-(N-ethylbenzimidazoliumyl)ethyl]amine hexafluorophosphate(LH_2·(PF_6)_2) and its N-h......
1 Introduction Surface-active polymers are of substantial importance in many diverse aspects of modern technology, with ......
为探究吕家坨井田地质构造格局,根据钻孔勘探资料,采用分形理论和趋势面分析方法,研究了井田7......
常温下(MEIm)+I-(MEIm=1-methyl-3-ethyl-imidazolyl)与Ag2O按照物质的量比为1∶2在DMSO中反应成功的合成了线型氮杂环卡宾银碘化......
Unexpected Side Reaction in the Intermolecular N-H Insertion of Phenyl Diazoacetates with Arylamines
Unexpected side reaction is discovered from the N-H insertion of phenyl diazoacetates with arylamines in the presence of......
A kinetic study of two ruthenium carbene catalysts, (PCy3)2Cl2Ru=CHPh 1 (Grubbs catalyst) and a new catalyst [1,3-bis(2,......
The aromatic character of divalent three, five and seven-membered rings C2H2M,C4H4 and C6H6M(M=C,Si, Ge, Sn and Pb) is i......
用限制的Hartree-Fock从头算分子轨道理论研究了单重态卡宾与甲酰氯环加成反应的机理.在HF/3-21G＊基组水平上,计算了反应势能面上各......
As a renewable biomass-based compound with wide applications in food additives,fine chemical synthesis and fuels,γ-vale......
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Unexpected Side Reaction in the Intermolecular N-H Insertion of Phenyl Diazoacetates with Arylamines
Unexpected side reaction is discovered from the N-H insertion of phenyl diazoacetates with arylamines in the presence of......
对有机合成化学和理论化学中近３０年来新发现的、具有广泛用途的反应活性中间体－碳烯有关合成方法研究的进展进行了简单介绍和评述．......
研究了以铜化合物催化重氮乙酸乙酯与烯烃的环丙烷化反应,首次计算了反应关键中间体铜-卡宾的环丙烷化选择性P及该中间体的解离常......
卡宾的基态有单线态和三线态两种状态。本文用HMO法的近似解说明了卡宾是以单线基态还是以三线基态存在的原因,同时也比较满意地解......
氮杂环丙烷是有机合成之砌块,其合成方法是重要的研究课题.本文全面介绍了近20年来的氮杂环丙烷的金属配合物催化合成,尤其是以氮......
<正> 卡宾(亚甲基)尽管早在三十年代就用来解说某些有机化学反应,但直至一九五九年通过光谱研究才被让实它的存在。嗣后,卡宾作为......
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用限制的Hartree-Fock从头算分子轨道理论研究了单重态卡宾与苯的环加成反应机理,采用HF/3-21G·方法计算了势能面上各驻点的......
The bis-benzimidazolium salt bis[2-（N-ethylbenzimidazoliumyl）ethyl]amine hexafluorophosphate（LH2·（PF6）2） and its N-hetero......
1IntroductionSurface-active polymers are of substantial importance in many diverse aspects of modern technology, with ap......
用ab initio(3-21G)方法对亚烷基卡宾H_2C—C的单线态及三线态结构进行了电子密度拓扑分析,说明了它们的亲电、亲核反应方向,讨论......
The aromatic character of divalent three, five and seven-membered rings C2H2M, C4H4M and C6H6M(M=C, Si, Ge, Sn and Pb) i......
合成了1-（2-吡啶甲基）-1，2，4-三唑（L）并研究了其与有机锡和羰基钼（钨）的配位反应，合成了通过三唑4位氮原子以单齿形式配位的有机锡衍生物LaS......
室温下,氧化.银与1-甲基-3-苄基-咪唑盐溴化物在二氯甲烷溶液中反应成功合成了目标化合物[（C_6H_5CH_2{C-（NCHCHN）CH_3}）_2Ag]~（2＋）[Ag_2B......
常温下（MEIm）＋I-（MEIm=1-methy1-3-ethy1-imidazolyl）与Ag：0按照物质的量比为1：2在DMS0中反应成功的合成了线型氮杂环卡宾银碘化物[Ag（MEIm......
A New Rearrangement Reaction of 2-Phenyl Substituted Benzothiazepine with Ethoxycarbonyl Carbene─Mec
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本文用从头计算方法研究了一氧化碳与卡宾加成反应的机理，得到了反应具有活化能的结论，且反应表现为亲核性。......
The title complex [Ag(carbene)2]2[Ag2Br4] has been synthesized by the reaction of Ag2O with 1-ethyl-3-benyl-imidazolium ......
In this paper,a new Pd-based complex that contains A^-heterocyclic carbene(NHC)and triphenylphosphine(PPh?)ligands was s......
讨论了卡宾１，４－加成反应的机理，影响因素以及１，４－加成在有机合成中的特殊应用。......
