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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64条记录   First Biosynthetic Evidence on the Phenyl-Containing Polyketides of the Marine Mollusc Scaphander lignarius. [作者：Cutignano, Adele;Avila, Conxita;Domenech-Coll, Anna;d'Ippolito, Giuliana;Cimino, Guido;Fontana, Angelo;,期刊：Organic Letters, 页码：2963-2966 , 文章类型： 研究论文，,卷期：2008年10-14] The biosynthesis of lignarenone A and B, the major polyketides of the Mediterranean mollusc Scaphander lignarius is described. The process is primed by benzoic acid and requires acetate and propionate as extender units.... A Hydrophilic Azacyclooctyne for Cu-Free Click Chemistry. [作者：Sletten, Ellen M.;Bertozzi, Carolyn R.;,期刊：Organic Letters, 页码：3097-3099 , 文章类型： 研究论文，,卷期：2008年10-14] Biomols. labeled with azides can be detected through Cu-free click chem. with cyclooctyne probes, but their intrinsic hydrophobicity can compromise bioavailability. Here, the authors report the synthesis and evaluation ... A Rhodamine-Based Chemosensor that Works in the Biological System. [作者：Suresh, Moorthy;Shrivastav, Anupama;Mishra, Sandhya;Suresh, E.;Das, Amitava;,期刊：Organic Letters, 页码：3013-3016 , 文章类型： 研究论文，,卷期：2008年10-14] which could bind Hg2+ and Cu2+ in aq. methanol soln. with detectable change in color. Cu2+ and Hg2+ ions responded differently toward the fluorescence output signals on binding to L1. L1 could also be used as a selecti... A Nonenzymatic Acid/Peracid Catalytic Cycle for the Baeyer-Villiger Oxidation. [作者：Peris, Gorka;Miller, Scott J.;,期刊：Organic Letters, 页码：3049-3052 , 文章类型： 研究论文，,卷期：2008年10-14] The combined action of carbodiimide and hydrogen peroxide upon exposure to carboxylic acid catalysts serves to generate transient peracids that can be engaged in the Baeyer-Villiger rearrangement of ketones to lactones. ... Further improvement on sulfonamide-based ligand for catalytic asymmetric 2-haloallylation and allylation. [作者：Zhang, Zhiyu;Huang, Jian;Ma, Bin;Kishi, Yoshito;,期刊：Organic Letters, 页码：3073-3076 , 文章类型： 研究论文，,卷期：2008年10-14] The sulfonamide-based ligand I (and its enantiomer) was found to exhibit an outstanding crystallinity and perform well as a ligand for Cr-mediated catalytic asym. 2-haloallylation and allylation. The new ligand has an a... Iterative Cr-mediated catalytic asymmetric allylation To synthesize syn/syn- and anti/anti-1,3,5-triols. [作者：Zhang, Zhiyu;Aubry, Sylvain;Kishi, Yoshito;,期刊：Organic Letters, 页码：3077-3080 , 文章类型： 研究论文，,卷期：2008年10-14] Iterative use of Cr-mediated catalytic asym. allylation could give a simple access to 1,3-polyols. Using syn/syn- and anti/anti-1,3,5-triols as representative examples, the feasibility of this approach is studied, there... Intermolecular Hydroamination of Allenes with N-Unsubstituted Carbamates Catalyzed by a Gold(I) N-Heterocyclic Carbene Complex. [作者：Kinder, Robert E.;Zhang, Zhibin;Widenhoefer, Ross A.;,期刊：Organic Letters, 页码：3157-3159 , 文章类型： 研究论文，,卷期：2008年10-14] Reaction of 2,3-pentadienyl benzoate with benzyl carbamate catalyzed by a 1:1 mixt. of (NHC)AuCl and AgOTf in dioxane at 23 癈 for 5 h led to isolation of (E)-4-(benzyloxycarbonylamino)-2-pentenyl benzoate in 84% yield as... Asymmetric Synthesis of Homoallylic Amines Bearing Adjacent Stereogenic Centers by Addition of Substituted Allylic Zinc Reagents to N-tert-Butanesulfinylimines. [作者：Reddy, Leleti Rajender;Hu, Bin;Prashad, Mahavir;Prasad, Kapa;,期刊：Organic Letters, 页码：3109-3112 , 文章类型： 研究论文，,卷期：2008年10-14] A highly diastereoselective addn. of substituted racemic allylic zinc reagents to chiral N-tert-butanesulfinylimines resulting in the formation of homoallylic amines is reported. This method is quite general and also ef... Trifluoromethyltriphenodioxazine: Air-Stable and High-Performance n-Type Semiconductor. [作者：Di, Chong-an;Li, Jing;Yu, Gui;Xiao, Yi;Guo, Yunlong;Liu, Yunqi;Qian, Xuhong;Zhu, Daoben;,期刊：Organic Letters, 页码：3025-3028 , 文章类型： 研究论文，,卷期：2008年10-14] active materials for n-type org. field-effect transistors, and their optical and electrochem. properties were characterized. Air-stable and high-performance thin film transistors based on the two compds. were fabricated... Designing Functionalized Porphyrins Capable of Pseudo-2D Self-Assembly on Surfaces. [作者：Bhosale, Sheshanath V.;Bissett, Mark A.;Forsyth, Craig;Langford, Steven J.;Neville, Suzanne M.;Shapter, Joseph G.;Weeks, Laura;Woodward, Clint P.;,期刊：Organic Letters, 页码：2943-2946 , 文章类型： 研究论文，,卷期：2008年10-14] A crystallog.-instructed strategy to highly ordered layering of porphyrins with different topologies on HOPG is developed based on meso-tetraarylporphyrins bearing 2-ethoxyethanol side chains as sticky ends. These stick... H-Shaped OPE/OPV Oligomers: A New Member of 2D-Conjugated Fluorophore Cores. [作者：Zhou, Ningzhang;Wang, Li;Thompson, David W.;Zhao, Yuming;,期刊：Organic Letters, 页码：3001-3004 , 文章类型： 研究论文，,卷期：2008年10-14] Organic Pigments, Fluorescent Brighteners, and Photographic A new class of two-dimensional (2D), p-conjugated, skewed H-shaped co-oligomers of phenylene vinylene and phenylene ethynylene (11a-d, termed H-mers) were synth... Catalytic Asymmetric Stetter Reaction Onto Vinylphosphine Oxides and Vinylphosphonates. [作者：Cullen, Steven C.;Rovis, Tomislav;,期刊：Organic Letters, 页码：3141-3144 , 文章类型： 研究论文，,卷期：2008年10-14] An intramol. Stetter reaction of vinylphosphine oxides and vinylphosphonates has been developed. Treatment of an aldehyde with a nucleophilic N-heterocyclic carbene catalyst allows for addn. of an acyl anion equiv. into... Synthesis and Crystal Structures of Isolable Terminal Aryl Hexatriyne and Octatetrayne Derivatives: Ar-(C equuiv.C)nH (n = 3, 4). [作者：Wang, Changsheng;Batsanov, Andrei S.;West, Kara;Bryce, Martin R.;,期刊：Organic Letters, 页码：3069-3072 , 文章类型： 研究论文，,卷期：2008年10-14] Unprecedented stability has been obsd. in terminal aryl hexatriyne and terminal aryl octatetrayne derivs. by judicious choice of a bulky, nonplanar headgroup [viz., 4-(3,6-di-tert-butyl-N-carbazolyl)phenyl] which hinders... Functionalized Dibenzo[g,p]chrysenes: Variable Photophysical and Electronic Properties and Liquid-Crystal Chemistry. [作者：Chaudhuri, Rupsha;Hsu, Ming-Yu;Li, Chia-Wen;Wang, Cheng-I.;Chen, Chun-Jung;Lai, Chung K.;Chen, Li-Yin;Liu, Su-Hao;Wu, Chung-Chih;Liu, Rai-Shung;,期刊：Organic Letters, 页码：3053-3056 , 文章类型： 研究论文，,卷期：2008年10-14] The photophys. and electronic properties of dibenzo[g,p]chrysenes bearing electron-rich and -deficient substituents vary markedly with these substituents. The chem. of the 1st liq.-cryst. dibenzo[g,p]chrysene is also de... Diastereoselective Friedel-Crafts Alkylation of Indoles with Chiral a-Phenyl Benzylic Cations. Asymmetric Synthesis of Anti-1,1,2-Triarylalkanes. [作者：Chung, John Y. L.;Mancheno, Danny;Dormer, Peter G.;Variankaval, Narayan;Ball, Richard G.;Tsou, Nancy N.;,期刊：Organic Letters, 页码：3037-3040 , 文章类型： 研究论文，,卷期：2008年10-14] The reactions of chiral benzyl carbocations bearing a-Ph substituents with N-sulfonylated indoles afford 1,1,2-triarylalkanes with anti-selectivities. This outcome is a reversal of facial diastereoselectivity relative t... Cipadonoid A, a Novel Limonoid with an Unprecedented Skeleton, from Cipadessa cinerascens. [Erratum to document cited in CA149:074006]. [作者：Fang, Xin;Di, Ying-Tong;He, Hong-Ping;Liu, Hai-Yang;Zhang, Zhen;Ren, Yan-Li;Gao, Zhu-Lin;Gao, Suo;Hao, Xiao-Jiang;,期刊：Organic Letters, 页码：3169-3169 , 文章类型： 研究论文，,卷期：2008年10-14] On page 1907, in column 2, the abs. configuration of Compd. 1 should be assigned as 1S,3R,5S,8S,10R,13S,14R,17R instead of 1S,3S,5R,8R,10S,13R,14S,17S.