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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66条记录   Synthesis, Crystal Structures, and Photophysical Properties of Electron-Accepting Diethynylindenofluorenediones [作者：ROSE BRADLEY D; CHASE DANIEL T; WEBER CHRISTOPHER D; ZAKHAROV LEV N; LONERGAN MARK C; HALEY MICHAEL M,期刊：Organic Letters, 页码：2106-2109 , 文章类型： Article，,卷期：2011年13-8] A series of 6,12-bis[(trialkylsilyl)ethynyl]indeno[1,2-b]fluorene-5,11-diones has been synthesized. X-ray crystallographic analysis of these compounds reveals that triisopropylsilyl (TIPS) substitution on the alkyne term... Copper-Catalyzed C-P Bond Construction via Direct Coupling of Phenylboronic Acids with H-Phosphonate Diesters [作者：ZHUANG RONGQIANG; XU JIAN; CAI ZHENSHI; TANG GUO; FANG MEIJUAN; ZHAO YUFEN,期刊：Organic Letters, 页码：2110-2113 , 文章类型： Article，,卷期：2011年13-8] A mild and efficient method was developed for the copper-catalyzed additions of H-phosphonate diesters to boronic acids under the copper catalyst system Cu2O/1,10-phenanthroline. To the best of our knowledge this finding... Vicinal C-Functionalization of Alkenes. Pd/Light-Induced Multicomponent Coupling Reactions Leading to Functionalized Esters and Lactones [作者：FUSANO AKIRA; SUMINO SHUHEI; FUKUYAMA TAKAHIDE; RYU ILHYONG,期刊：Organic Letters, 页码：2114-2117 , 文章类型： Article，,卷期：2011年13-8] Under photoirradiation conditions using a xenon light, and in the presence of PdCl2(PPh3)(2) as a catalyst, four-component coupling reactions comprising of alpha-substituted iodoalkanes, alkenes, carbon monoxide, and alc... A [3+2] Dipolar Cycloaddition Route to 3-Hydroxy-3-alkyl Oxindoles: An Approach to Pyrrolidinoindoline Alkaloids [作者：SINGH ANAND; ROTH GREGORY P,期刊：Organic Letters, 页码：2118-2121 , 文章类型： Article，,卷期：2011年13-8] A [3 + 2] cycloaddition approach to the 3-hydroxy-3-alkyl oxindole scaffold is described. Isoxazolines obtained by cycloaddition of nitrile oxide 3 with 3-methylene oxindoles were elaborated to 3-hydroxy-3-cyanomethyl ox... Gosteli-Claisen Rearrangement of Propargyl Vinyl Ethers: Cascading Molecular Rearrangements [作者：GILLE ANNIKA; REHBEIN JULIA; HIERSEMANN MARTIN,期刊：Organic Letters, 页码：2122-2125 , 文章类型： Article，,卷期：2011年13-8] The ambivalent reactivity of 2-alkoxycarbonyl-substituted propargyl vinyl ethers has been explored. Depending on the conditions, the catalyzed and uncatalyzed Gosteli-Claisen rearrangement triggers downstream transformat... Chiral Bronsted Acid Catalysis for Enantioselective Hosomi-Sakurai Reaction of Imines with Allyltrimethylsilane [作者：MOMIYAMA NORIE; NISHIMOTO HAYATO; TERADA MASAHIRO,期刊：Organic Letters, 页码：2126-2129 , 文章类型： Article，,卷期：2011年13-8] The chiral Bronsted acid (1b or 1c) has been shown to initiate the Hosomi-Sakurai reaction of imines with excellent enantioselectivities. The combined Bronsted acid system has been developed to offer a new class of chira... Nickel-Catalyzed Cycloadditions of Thiophthalic Anhydrides with Alkynes [作者：INAMI TASUKU; BABA YOKO; KURAHASHI TAKUYA; MATSUBARA SEIJIRO,期刊：Organic Letters, 页码：1912-1915 , 文章类型： Article，,卷期：2011年13-8] Nickel-catalyzed cycloadditions have been developed where thiophthalic anhydrides react with alkynes to afford substituted sulfur-containing heterocyclic compounds. Selective formations of thioisocoumarins, benzothiophen... Phenyliodine(III) Bis(trifluoroacetate) (PIFA)-Promoted Synthesis of Bodipy Dimers Displaying Unusual Redox Properties [作者：RIHN SANDRA; ERDEM MUSTAFA; DE NICOLA ANTOINETTE; RETAILLEAU PASCAL; ZIESSEL RAYMOND,期刊：Organic Letters, 页码：1916-1919 , 文章类型： Article，,卷期：2011年13-8] Phenyliodine(III) bis(trifluoroacetate) (PIFA) in conjunction with a Lewis acid promotes C-C coupling of Bodipy monomers leading to mixtures of various oligomers. When a single position is blocked with an iodo or phenyl ... Highly Stereoselective Facile Synthesis of 2-Acetoxy-1,3(E)-alkadienes via a Rh(I)-Catalyzed Isomerization of 2,3-Allenyl Carboxylates [作者：ZHANG XIAOBING; FU CHUNLING; MA SHENGMING,期刊：Organic Letters, 页码：1920-1923 , 文章类型： Article，,卷期：2011年13-8] A highly stereoselective Rh(I)-catalyzed 1,3-acetoxyl rearrangement of 1,2-allen-3-yl carboxylates leading to 2-acetoxy-1,3(E)-alkadienes has been developed. In addition to the high catalytic efficiency and the scope, th... Allene Functionalization via Bicyclic Methylene Aziridines [作者：BORALSKY LUKE A; MARSTON DAGMARA; GRIGG R DAVID; HERSHBERGER JOHN C; SCHOMAKER JENNIFER M,期刊：Organic Letters, 页码：1924-1927 , 文章类型： Article，,卷期：2011年13-8] The oxidative functionalization of olefins is a common method for the formation of vicinal carbon-heteroatom bonds. However, oxidative methods to transform allenes into synthetic motifs containing three contiguous carbon... Electrochemical Synthesis and Mechanestic Study of Quinone Imines Exploiting the Dual Character of N,N-Dialkyl-p-phenylenediamines [作者：MALEKI ABBAS; NEMATOLLAHI DAVOOD,期刊：Organic Letters, 页码：1928-1931 , 文章类型： Article，,卷期：2011年13-8] Two one-pot electrochemical approaches for the synthesis of similar quinone imines via either the nucleophilic character of N,N-dialkyl-p-phenylenediamines or electrophilic reactivity of their oxidized forms through Mich... Highly Chemoselective Esterification Reactions and Boc/THP/TBDMS Discriminating Deprotections under Samarium(III) Catalysis [作者：GOPINATH PUSHPARATHINAM; NILAYA SURAPANENI; MURALEEDHARAN KANNOTH MANHERI,期刊：Organic Letters, 页码：1932-1935 , 文章类型： Article，,卷期：2011年13-8] The usefulness of SmCl3 as an excellent catalyst for chemoselective esterifications and selective removal of acid sensitive protecting groups such as Boc, THP, and TBDMS in the presence of one another is demonstrated thr... Thiadiazoloquinoxalines: Tuning Physical Properties through Smart Synthesis [作者：DALLOS TIMEA; HAMBURGER MANUEL; BAUMGARTEN MARTIN,期刊：Organic Letters, 页码：1936-1939 , 文章类型： Article，,卷期：2011年13-8] The synthesis of pi-conjugated acceptors based on thiadiazoloquinoxaline (TQ) derivatives is described. Apart from reporting on the functionalization of the TQ core, the influence of the substituents was studied by UV-vi... Tandem Phospha-Friedel-Crafts Reaction toward Curved pi-Conjugated Frameworks with a Phosphorus Ring Junction [作者：HATAKEYAMA TAKUJI; HASHIMOTO SIGMA; NAKAMURA MASAHARU,期刊：Organic Letters, 页码：2130-2133 , 文章类型： Article，,卷期：2011年13-8] The tandem phospha-Friedel Crafts reaction transforms dichloro(m-teraryl)phosphine to the corresponding triarylphosphine derivatives containing curved pi-conjugated frameworks with a phosphorus ring junction. The rigid m... Pd(II)-Catalyzed Intramolecular Amidoarylation of Alkenes with Molecular Oxygen as Sole Oxidant [作者：YIP KAITAI; YANG DAN,期刊：Organic Letters, 页码：2134-2137 , 文章类型： Article，,卷期：2011年13-8] Stereoselective palladium-catalyzed synthesis of structurally versatile indoline derivatives, using molecular oxygen as the sole oxidant, is described. New C-N and C-C bonds form across an alkene in an intramolecular man... Nickel-Catalyzed Reductive Cross-Coupling of Unactivated Alkyl Halides [作者：YU XIAOLONG; YANG TAO; WANG SHULIN; XU HAILIANG; GONG HEGUI,期刊：Organic Letters, 页码：2138-2141 , 文章类型： Article，,卷期：2011年13-8] A Ni-catalyzed reductive approach to the cross-coupling of two unactivated alkyl halides has been successfully developed. The reaction works efficiently for primary and secondary halides, with at least one being bromide....