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文章名     作者     期刊名     摘要     卷     期         如果没有找到您所需要的文献，请点击 ——此处申请     共62条记录   Alkoxydienes via Copper-Promoted Couplings: Utilizing an Alkyne Effect [作者：WINTERNHEIMER DAVID J; MERLIC CRAIG A,期刊：Organic Letters, 页码：2508-2510 , 文章类型： Article，,卷期：2010年12-11] Simple alkenes and alkynes, with 3-hexyne in particular, are found to be important pi ligands for oxidative copper-based coupling (modern Ullmann) reactions. This enabled syntheses of various alkoxydienes with removable ... Pd(II)-Catalyzed o-C-H Acetoxylation of Phenylalanine and Ephedrine Derivatives with (MeCOOOBu)-Bu-t/Ac2O [作者：VICKERS CHRIS J; MEI TIANSHENG; YU JINQUAN,期刊：Organic Letters, 页码：2511-2513 , 文章类型： Article，,卷期：2010年12-11] Pd(II)-catalyzed ortho C-H acetoxylation of triflate protected phenethyl- and phenpropylamines has been achieved with tert-butyl peroxyacetate as the stoichiometric oxidant and either DMF or CH3CN as the promoter. The re... Allenamide Hydro-Hydroxyalkylation: 1,2-Amino Alcohols via Ruthenium-Catalyzed Carbonyl anti-Aminoallylation [作者：ZBIEG JASON R; MCINTURFF EMMA L; KRISCHE MICHAEL J,期刊：Organic Letters, 页码：2514-2516 , 文章类型： Article，,卷期：2010年12-11] Exposure of alcohols to allenamides in the presence of RuHCl(CO)(PPh3)(3) and dippf [dippf = bis(diisopropylphosphino)ferrocene] results in hydrogen transfer to generate aldehyde-allylruthenium pairs, which engage in C-C... Copper-Catalyzed Cyanation of Heterocycle Carbon-Hydrogen Bonds [作者：DO HIENQUANG; DAUGULIS OLAFS,期刊：Organic Letters, 页码：2517-2519 , 文章类型： Article，,卷期：2010年12-11] A method for regioselective cyanation of heterocycles has been developed. A number of aromatic heterocycles as well as azulene can be cyanated in reasonable to good yields by using a copper cyanide catalyst and an iodine... Novel Axially Chiral Phosphine Ligand with a Fluoro Alcohol Moiety for Rh-Catalyzed Asymmetric Arylation of Aromatic Aldehydes [作者：MORIKAWA SATOSHI; MICHIGAMI KYOSUKE; AMII HIDEKI,期刊：Organic Letters, 页码：2520-2523 , 文章类型： Article，,卷期：2010年12-11] A new chiral phosphine ligand (R)-1 possessing a fluoroalcohol moiety was prepared. The (R)-1-coordinated Rh(I) complex showed an excellent catalytic activity for asymmetric 1,2-addition of arylboronic acids to aldehydes... Nucleophilic Substitution of Oxazino-/Oxazolino-/Benzoxazin [3,2-b]indazoles: An Effective Route to 1H-Indazolones [作者：DONALD MICHAEL B; CONRAD WAYNE E; OAKDALE JAMES S; BUTLER JEFFREY D; HADDADIN MAKHLUF J; KURTH MARK J,期刊：Organic Letters, 页码：2524-2527 , 文章类型： Article，,卷期：2010年12-11] A variety of nucleophiles, thiolates, alkoxides, amines, iodide, and cyanide, react with oxazino-, oxazolino-, and benzoxazin[3,2-b]indazoles under microwave conditions to yield a diverse set of 2-substituted 1H-indazolo... Rh(I)-Catalyzed [(3+2)+1] Cycloaddition of 1-Yne/Ene-vinylcyclopropanes and CO: Homologous Pauson-Khand Reaction and Total Synthesis of (+/-)-alpha-Agarofuran [作者：JIAO LEI; LIN MU; ZHUO LIANGANG; YU ZHIXIANG,期刊：Organic Letters, 页码：2528-2531 , 文章类型： Article，,卷期：2010年12-11] A novel Rh(I)-catalyzed [(3 + 2) + 1] cycloaddition, which can be regarded as a homologous Pauson-Khand reaction, was developed to synthesize bicyclic cyclohexenones and cyclohexanones, enabling a new approach for synthe... Amino-Acid Templated Assembly of Sucrose-Derived Macrocycles [作者：LEWANDOWSKI BARTOSZ; JAROSZ SLAWOMIR,期刊：Organic Letters, 页码：2532-2535 , 文章类型： Article，,卷期：2010年12-11] C-2-Symmetrical chiral macrocyles containing two sucrose units were prepared by an amino acid templated macrocyclization reaction between appropriate sucrose-based linear precursors and ethylenediamine. Cationic Pd(II)/Bipyridine-Catalyzed Conjugate Addition of Arylboronic Acids to beta,beta-Disubstituted Enones: Construction of Quaternary Carbon Centers [作者：LIN SHAOHUI; LU XIYAN,期刊：Organic Letters, 页码：2536-2539 , 文章类型： Article，,卷期：2010年12-11] Cationic Pd(II)-catalyzed addition of arylboronic acids to beta,beta-disubstituted enones in high yields was developed. This method provided an efficient method for the construction of quaternary carbon centers, and only... Pattern-Based Recognition for Determination of Enantiomeric Excess, Using Chiral Auxiliary Induced Chemical Shift Perturbation NMR [作者：LEI XINXIANG; LIU LU; CHEN XIAOJING; YU XIAOCHUN; DING LISHENG; ZHANG ANJIANG,期刊：Organic Letters, 页码：2540-2543 , 文章类型： Article，,卷期：2010年12-11] A protocol for the determination of enantiomeric excess of chiral carboxylic acid, using the subtle frequency shifts (chemical shift perturbation) in NMR spectra induced by chiral auxiliary, is described. The spectra wer... Synthesis of (+)-Lycoricidine by the Application of Oxidative and Regioselective Ring-Opening of Aziridines [作者：YADAV J S; SATHEESH G; MURTHY CHANGALVALA V S R,期刊：Organic Letters, 页码：2544-2547 , 文章类型： Article，,卷期：2010年12-11] A highly stereoselective total synthesis of (+)-lycoricidine has been described. The salient features of this synthesis are the one-pot elimination followed by allylation reaction, ring-closing metathesis, stereoselectiv... Preparation and Reactions of (beta-Trifluoromethyl)vinyl Sulfonium Salt [作者：MAEDA RYOKO; OOYAMA KYOKO; ANNO RYOKO; SHIOSAKI MASAHIRO; AZEMA TAKAYUKI; HANAMOTO TAKESHI,期刊：Organic Letters, 页码：2548-2550 , 文章类型： Article，,卷期：2010年12-11] (beta-Trifluoromethyl)vinyl sulfonium salt as a novel three-carbon fluorinated building block was conveniently prepared from easily available (beta-trifluoromethyl)vinyl sulfide and diphenyl iodonium salt in excellent yi... Methoxypyridines in the Synthesis of Lycopodium Alkaloids: Total Synthesis of (+/-)-Lycoposerramine R [作者：BISAI VISHNUMAYA; SARPONG RICHMOND,期刊：Organic Letters, 页码：2551-2553 , 文章类型： Article，,卷期：2010年12-11] A methoxypyridine serves as a masked pyridone in a concise synthesis of the Lycopodium alkaloid lycoposerramine R, which has been prepared for the first time. The key step of the synthesis is the use of an Eschenmoser Cl... Rhodium-Catalyzed Annulation of Ynamides with Bifunctional Arylboron Reagents [作者：GOURDET BENOIT; RUDKIN MAIRI E; LAM HON WAI,期刊：Organic Letters, 页码：2554-2557 , 文章类型： Article，,卷期：2010年12-11] Annulation of ynamides with arylboronic acids or esters containing an electrophilic functional group at the ortho-position proceeds under the action of rhodium catalysis to generate 2-amidoindenols or 2-amidoindenes, usu... Photoresponsive Host-Guest Systems Based on a New Azobenzene-Containing Crytpand [作者：LIU MING; YAN XUZHOU; HU MENGLONG; CHEN XIAOPENG; ZHANG MINGMING; ZHENG BO; HU XIAOHUAN; SHAO SHUANG; HUANG FEIHE,期刊：Organic Letters, 页码：2558-2561 , 文章类型： Article，,卷期：2010年12-11] A new azobenzene-bridged cryptand was synthesized; it can be well controlled between cis and trans isomers by irradiation with different wavelengths or by being heated. It was found that this cryptand exhibits an ON-OFF ... Synthesis and Glycosidase Inhibition of the Enantiomer of (-)-Steviamine, the First Example of a New Class of Indolizidine Alkaloid [作者：HU XIANGGUO; BARTHOLOMEW BARBARA; NASH ROBERT J; WILSON FRANCIS X; FLEET GEORGE W J; NAKAGAWA SHINPEI; KATO ATSUSHI; JIA YUEMEI; VAN WELL RENATE; YU CHUYI,期刊：Organic Letters, 页码：2562-2565 , 文章类型： Article，,卷期：2010年12-11] (+)-Steviamine, the enantiomer of the natural (-)-steviamine, and its corresponding C5 epimer have been synthesized from the D-ribose-derived cyclic nitrone. (-)-Steviamine was found to be the first naturally occurring i...