metal-free相关论文
Synthesis of arylsulfonyl-substituted indolo[2,1-a]isoquinolin-6(5H)-one derivatives via a TBAI-cata
We have developed a metal-free radical cascade reaction of N-substituted 2-aryl indoles with read-ily available sulfonyl......
Carbene transfer reactions play an important role in the field of organic synthesis because of their abil-ity to constru......
Synthesis of tetrasubstituted thiophenes from pyridinium 1,4-zwitterionic thiolates and modified act
Pyridinium 1,4-zwitterionic thiolates were applied to a formal [3+2] annulation reaction with modified activated alkynes......
Persulfate promoted tandem radical cyclization of ortho-cyanoarylacrylamides with oxamic acids for c
An efficient and practical methods for the synthesis of carbamoyl quinoline-2,4-diones via the reaction of ortho-cyanoar......
A condition-controlled strategy for selectively synthesis of 2-acylbenzothiazoles and bibenzo[b][1,4]thiazines from aryl......
Metal-free C(sp2)-H perfluoroalkylsulfonylation and configuration inversion:Stereoselective synthesi
The perfluoroalkylsulfonylation (CF3SO2,C2F5SO2 and CHF2SO2) in the enaminone C-H bonds has been developed simply via th......
报道了无金属可见光诱导的苯乙酸衍生物脱羧.在无添加剂条件下,使用廉价的氘源成功地实现了酸的直接脱羧单氘化.此外,在空气存在时......
Hypervalent iodine mediated C-H amination of quinoxalinones with heteroaromatic amines under metal-f
An efficient and facile method for C-H amination of quinoxalinones with heteroaromatic amines under metal-free condition......
Metal-free π-conjugated hybrid g-C3N4 with tunable band structure for enhanced visible-light photoca
Development of low-cost and efficient photocatalytic materials with visible-light response is of urgent need for solving......
Tiacumicin B(also known as fidaxomicin or difimicin)is a marketed 18-membered macrolide antibiotic for the treatment of ......
Organic dyes based on triphenylamine for dye-sensitized solar cells:Structure-property relationships
Three new organic dyes based on triphenylamine with a structure of A-D-A-D-A (D1),A-D-A (D2) and D-A (D3) were designed,......
Rational design of carbon-based metal-free catalysts for electrochemical carbon dioxide reduction: A
Electrochemical CO2 reduction to chemicals or fuels presents one of the most promising strategies for managing the globa......
Replacement of precious metal catalysts by commercially available alternatives is of great importance among both fundame......
A CLASS OF HIGH PERFORMANCE METAL-FREE OXYGEN REDUCTION ELECTROCATALYSTS BASED ON CHEAP CARBON BLACK
Due to the energy crisis in the world,fuel cells are attractive as clean and sustainable energy conversion devices1.For ......
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Metal-free Oxidative Coupling of Aminopyridines with Nitroolefins to Imidazo[1,2-a]pyridine in the P
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As a privileged N-heterocycle,imidazo[1,2-α]pyridines have exhibited various biological activities.1 With properly inst......
New Application of 3,4-Dihalo-2(5H)-furanone Derivatives in Catalyst-free Three-component Reaction f
Molecules possessing 2(5H)-furanone moiety are receiving increasing attention due to the significant biological activiti......
We report a simple,yet efficient metal-free oxidation of secondary benzylic alcohols in the presence of t-butyl hydroper......
Synthesis of N-(2-hydroxyaryl)-Benzotriazoles via Metal-free O-arylation and [3,3]-Rearrangement Pro
N-Arylbenzotriazoles are one of the most important classes of N-heterocycles in biological,pharmaceutical and medicinal ......
Preparation 2(5H)-Furanone Derivatives Using Oxygen-group Reagents and Their Bioactivity Investigati
2(5H)-Furanone belongs to the class of α,β-unsaturated lactones,and the compound containing this structural unit is no......
A new metal-free method for the synthesis of 3-fluoro-2-oxindoles was developed.2-iodo-2-fluoro-N-phenylacetamide was pr......
Metal-free Oxidative C-H Amination of 8-Acylaminoquinolines and Anilides with N-Fluorobenzenesuifoni
Arylamines and their derivatives play an important role in biological active compounds,functional materials as well as o......
Metal-free Decarboxylative Alkoxylation of 2-Picolinic Acid and its Derivatives with Cyclic Ethers:O
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2-Iodoxybenzoic Acid(IBX)-Mediate Oxidative Cleavage of Aromatic Carbon-Nitrogen Bond in N-Aryl Amid
Formation and cleavage of chemical bonds are the two equally important basic problems in organic synthetic chemistry.Ove......
Quinolinones are an important class ofheterocycles, which have been known to exhibit a broad range of biological propert......
Main observation and conclusionrnOxidative dehydrogenation of ethylbenzene is considered as an alternative route to styr......
Quinoline is an important scaffold in various natural products and synthetic compounds with wide applications in med......
Oxidative C(sp3)-H functionalization of methylazaheteroarenesa facile route to 1,2,4-triazolo[4,3-a]
Triazolopyridines are important heterocycles which are widely present in natural products,synthetic drugs and materi......
Quinoxalin-2(1H)-ones have attracted considerable attention since they are endowed with significant biological activ......
DDQ-Catalyzed Direct C(sp3)-H Amination of AlkylheteroarenesSynthesis of Biheteroarenes under Aerobi
Biheteroarenes,possess a privileged structural cores in organic functional materials,ligands,and biological activiti......
The design of artificial nucleases and nuclease mimics has attracted extensive attention and made great progress due to ......
Electrochemical Selective Oxidative Synthesis of Diversified Sulfur Heterocycles from β-Ketothioamid
Main observation and conclusionrnA general and practical protocol for the construction of diversified sulfur heterocycle......
通过使用简单的Et3N催化容易获得的β-取代NH-烯胺酯和对甲苯磺酰叠氮的反应,高效实现了全取代的1,2,3-三氮唑的合成.在该方法中,......
Oxidative dual C-H sulfenylation:A strategy for the synthesis of bis(imidazo[1,2-a]pyridin-3-yl)sulf
An efficient approach to sulfur-bridged imidazopyridines has been developed under metal-free conditions using inexpensiv......
The carbon-based metal-free materials as catalysts (named as carbocatalysts) have been attracting tremendous attentions ......
An electrochemical amino-azidation of 2-aminostyre ne with sodium azide(NaN3)was developed,which can be carried out smoo......
Transition metal-catalyzed carbene transfer reaction is one of the most notable advances for C-C bond formation reaction......
Visible-light-induced three-component reaction of quinoxalin-2(1H)-ones, alkenes and CF3SO2Na leadin
A facile and metal-free visible-light-enabled three-component reaction of quinoxalin-2(1H)-ones, alkenes and CF3SO2Na ha......
Metal-free direct C(sp3)-H functionalization of 2-alkylthiobenzoic acid to access 1,3-benzooxathiin-
Metal-free direct α-C(sp3)-H intramolecular cyclization of 2-alkylthiobenzoic acid in the presence of Selectfluor is de......
报道了无金属参与的连续的催化型Ugi三组分/炔烃-叠氮环加成反应一锅合成[1,2,3]三唑并[1,5-a]喹喔啉.该反应使用邻叠氮基芳胺、炔......
The recent molecular iodine catalyzed [1,2]-rearrangement of aryl amines and 3-amino-1H-indazolesfor the synthesis of 1,......
Oxidative desulfurization (ODS) has been proved to be an efficient strategy for the production of clean fuel oil. Numero......
以苯乙醛和苄胺衍生物为原料，分子碘作为催化剂，过氧叔丁醇作为氧化剂合成了一系列的多取代咪唑．同时对反应过程中催化剂的用量、氧化......
Quantum dots (QDs) with unique quantum confinement effect and electro-optical properties are attractive for biomedical a......
Metal-free visible-light-induced oxidative cyclization reaction of 1,6-enynes and arylsulfinic acids
A new and convenient visible-light-induced method has been developed for the synthesis of sulfonylated benzofurans via o......
In recent years, the transition metal-free sulfenylation of C--H bond for C--S formation has been rapidly advanced and h......
该文从挂篮荷载计算、施工流程、支座及临时固结施工、挂篮安装及试验、合拢段施工、模板制作安装、钢筋安装、混凝土的浇筑及养生......
