个性化文献订阅>文章检索

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   A Catalytic method for the preparation of polysubstituted cyclopentanes: [3 + 2] cycloaddition of vinylidenecyclopropanes with activated olefins catalyzed by triflic imide. [作者：Li, Wei;Shi, Min;,期刊：Journal of Organic Chemistry, 页码：856-860 , 文章类型： 研究论文，,卷期：2009年74-2] [3 + 2] Cycloaddns. of vinylidenecyclopropanes with electron-deficient olefins, such as Me vinyl ketone and acrylaldehyde, proceed smoothly in the presence of a catalytic amt. of triflic imide (Tf2NH) to give the corresp... Reactions of N-Benzyloxycarbamate Derivatives with Stabilized Carbon Nucleophiles: A New Synthetic Approach to Polyhydroxamic Acids and Other Hydroxamate-Containing Mixed Ligand Systems. [作者：Liu, Yuan;Jacobs, Hollie K.;Gopalan, Aravamudan S.;,期刊：Journal of Organic Chemistry, 页码：782-788 , 文章类型： 研究论文，,卷期：2009年74-2] Hydroxamic acids are an important class of chelators of hard metal ions such as Fe(III), which have found applications in therapeutic, diagnostic, and sepn. chem. Hence, methods for their prepn. and incorporation into v... Thermal Rearrangements of 2-Ethynylbiphenyl: A DFT Study of Competing Reaction Mechanisms. [作者：Mackie, Iain D.;Johnson, Richard P.;,期刊：Journal of Organic Chemistry, 页码：499-503 , 文章类型： 研究论文，,卷期：2009年74-2] Mechanistic pathways for high-temp. rearrangements of 2-ethynylbiphenyl were studied by calcns. at the B3LYP/6-31G(d) level of theory, with free energy ests. at 625 癈. Two different routes for high temp. thermal rearran... The Effect of Electrostatic Interactions on Conformational Equilibria of Multiply Substituted Tetrahydropyran Oxocarbenium Ions. [作者：Yang, Michael T.;Woerpel, K. A.;,期刊：Journal of Organic Chemistry, 页码：545-553 , 文章类型： 研究论文，,卷期：2009年74-2] The three-dimensional structures of dioxocarbenium ions related to glycosyl cations were detd. by an anal. of spectroscopic, computational, and reactivity data. Hypothetical low-energy structures of the dioxocarbenium i... Ring-Expansion Protocol: Preparation of Synthetically Versatile Dihydrotropones. [作者：Do, Young-Sun;Sun, Ruiying;Kim, Hee Jin;Yeo, Jung Eun;Bae, Sung-Hee;Koo, Sangho;,期刊：Journal of Organic Chemistry, 页码：917-920 , 文章类型： 研究论文，,卷期：2009年74-2] A ring-expansion protocol that consisted of the 1,2-addn. of various enolate nucleophiles to 6-trimethylsiloxy-2-cyclohexene-1-one and the NaIO4-promoted oxidative ring opening of the resulting diols, followed by an intr... Polyphosphorylated Triphenylenes: Synthesis, Crystal Structure, and Selective Catechol Recognition. [作者：Givelet, Cecile;Tinant, Bernard;Van Meervelt, Luc;Buffeteau, Thierry;Marchand-Geneste, Nathalie;Bibal, Brigitte;,期刊：Journal of Organic Chemistry, 页码：652-659 , 文章类型： 研究论文，,卷期：2009年74-2] Designed as multivalent H bond acceptor, new receptors, Discopus (2,3,6,7,10,11-hexa(diphenylphosphinate)triphenylene (1a), 2,3,6,7,10,11-hexa[bis(4-methoxyphenyl)phosphinate]triphenylene (1b)), were built from a triphen... An Unprecedented Chemospecific and Stereoselective Tandem Nucleophilic Addition/Cycloaddition Reaction of Nucleophilic Carbenes with Ketenimines. [作者：Cheng, Ying;Ma, Yang-Guang;Wang, Xiao-Rong;Mo, Jun-Ming;,期刊：Journal of Organic Chemistry, 页码：850-855 , 文章类型： 研究论文，,卷期：2009年74-2] The first study of the reaction between nucleophilic carbenes and ketenimines is reported. The interaction of thiazole and benzothiazole carbenes with ketenimines proceeded in a chemospecific and stereoselective manner ... N-Heterocyclization of Naphthylamines with 1,2- and 1,3-Diols Catalyzed by an Iridium Chloride/BINAP System. [作者：Aramoto, Hiroomi;Obora, Yasushi;Ishii, Yasutaka;,期刊：Journal of Organic Chemistry, 页码：628-633 , 文章类型： 研究论文，,卷期：2009年74-2] Benzoquinolines were synthesized by iridium-catalyzed N-heterocyclization of naphthylamines with diols. Thus, the reaction of 1-naphthylamine with 1,3-propanediol catalyzed by IrCl3 combined with BINAP as a ligand gave ... An Expeditious Synthesis of Bruguierol A. [作者：Fananas, Francisco J.;Fernandez, Amadeo;Cevic, Deniz;Rodriguez, Felix;,期刊：Journal of Organic Chemistry, 页码：932-934 , 文章类型： 研究论文，,卷期：2009年74-2] A very simple strategy for the construction of 2,3-benzo-fused 8-oxabicyclo[3.2.1]octane derivs. is reported. This new process is based on a platinum-catalyzed tandem intramol. hydroalkoxylation-hydroarylation reaction ... Synthesis of Phenol and Quinone Metabolites of Benzo[a]pyrene, a Carcinogenic Component of Tobacco Smoke Implicated in Lung Cancer. [作者：Xu, Daiwang;Penning, Trevor M.;Blair, Ian A.;Harvey, Ronald G.;,期刊：Journal of Organic Chemistry, 页码：597-604 , 文章类型： 研究论文，,卷期：2009年74-2] Polycyclic arom. hydrocarbons (PAHs) are widespread environmental pollutants produced in the combustion of org. matter. PAHs are present in automobile exhaust and tobacco smoke, and they have recently been designated as... Meta-Substituted Thienyl Benzenes: A Comparative Synthetic, Structural and Computational Study. [作者：Cornacchio, Angelica L. P.;Price, Jacquelyn T.;Jennings, Michael C.;McDonald, Robert;Staroverov, Viktor N.;Jones, Nathan D.;,期刊：Journal of Organic Chemistry, 页码：530-544 , 文章类型： 研究论文，,卷期：2009年74-2] A selection of metal-catalyzed C-C bond-forming strategies has been evaluated in the synthesis of a series of meta-substituted thienylbenzenes, (Tn)2C6H4 and (Tn)3C6H3 (n = 1, 2; T1 = 2-thienyl; T2 = 2,2'-bithien-5-yl). ... Biogenesis of Sesquiterpene Lactones Pseudoguaianolides from Germacranolides: Theoretical Study on the Reaction Mechanism of Terminal Biogenesis of 8-Epiconfertin. [作者：Barquera-Lozada, Jose Enrique;Cuevas, Gabriel;,期刊：Journal of Organic Chemistry, 页码：874-883 , 文章类型： 研究论文，,卷期：2009年74-2] The fundamental study of the biogenetic origin of natural products has always been limited from the exptl. point of view because proposed reaction mechanisms have only been supported on the mol. structures of reagents an... Stereoselective Addition of a-Methylsulfenyl Benzyl Carbanions to N-Sulfinylketimines: Asymmetric Synthesis of a,a-Dibranched b-Sulfanyl Amines. [作者：Arroyo, Yolanda;Meana, Angela;Sanz-Tejedor, M. Ascension;Alonso, Ines;Garcia Ruano, Jose L.;,期刊：Journal of Organic Chemistry, 页码：764-772 , 文章类型： 研究论文，,卷期：2009年74-2] (R)- and (S)-N-sulfinyl ketimines react with the ortho-sulfinyl benzyl carbanion derived from the tolyl sulfoxide I (R = p-tolyl) affording a,a-dibranched b-sulfanyl amines, e.g. II, epimeric at the benzylic carbon. The... Computational Evaluation of Enantioselective Diels-Alder Reactions Mediated by Corey's Cationic Oxazaborolidine Catalysts. [作者：Paddon-Row, Michael N.;Anderson, Christopher D.;Houk, K. N.;,期刊：Journal of Organic Chemistry, 页码：861-868 , 文章类型： 研究论文，,卷期：2009年74-2] The cationic oxazaborolidine-catalyzed Diels-Alder reactions of butadiene and five dienophiles were studied using d. functional theory (B3LYP/6-31G(d)). In each case, the computational results successfully reproduce the... Experimental and Theoretical Studies on Constitutional Isomers of 2,6-Dihydroxynaphthalene Carbaldehydes. Effects of Resonance-Assisted Hydrogen Bonding on the Electronic Absorption Spectra. [作者：Houjou, Hirohiko;Motoyama, Takatoshi;Banno, Seisaku;Yoshikawa, Isao;Araki, Koji;,期刊：Journal of Organic Chemistry, 页码：520-529 , 文章类型： 研究论文，,卷期：2009年74-2] We prepd. and characterized a series of mono- and dicarbaldehydes of 2,6-dihydroxynaphthalene that bear potential resonance-assisted hydrogen bonding (RAHB) unit(s). X-ray crystal structures of selected compds. revealed... An Extensive Ylide Thermodynamic Stability Scale Predicted by First-Principle Calculations. [作者：Fu, Yao;Wang, Hua-Jing;Chong, Sha-Sha;Guo, Qing-Xiang;Liu, Lei;,期刊：Journal of Organic Chemistry, 页码：810-819 , 文章类型： 研究论文，,卷期：2009年74-2] Thermodn. stabilities of ylides are measured by the ease of the carbanion formation through the removal of a proton from their precursors. A full-spectrum scale of ylide thermodn. stability is important to understand th...