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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34条记录   A convergent approach to biocompatible polyglycerol "click" dendrons for the synthesis of modular core-shell architectures and their transport behavior. [作者：Wyszogrodzka, Monika;Haag, Rainer;,期刊：Chemistry-A European Journal, 页码：9202-9214 , 文章类型： 研究论文，,卷期：2008年14-30] Dendrimers are an important class of polymeric materials for a broad range of applications in which monodispersity and multivalency are of interest. Here we report on a highly efficient synthetic route towards bifunctio... Heterogeneous gold catalysts for efficient access to functionalized lactones. [作者：Neatu, Florentina;Li, Zhi;Richards, Ryan;Toullec, Patrick Y.;Genet, Jean-Pierre;Dumbuya, Karifala;Gottfried, J. Michael;Steinrueck, Hans-Peter;Parvulescu, Vasile;Michelet, Veronique;,期刊：Chemistry-A European Journal, 页码：9412-9418 , 文章类型： 研究论文，,卷期：2008年14-30] A novel class of heterogeneous gold catalysts supported on zeolite beta-NH4+ was prepd. by the deposition-pptn. method. This new class of catalyst showed interesting catalytic activities for the intramol. cycloisomeriza... Aldol reactions between L-erythrulose derivatives and chiral a-amino and a-fluoro aldehydes: competition between Felkin-Anh and Cornforth transition states. [作者：Diaz-Oltra, Santiago;Carda, Miguel;Murga, Juan;Falomir, Eva;Marco, J. Alberto;,期刊：Chemistry-A European Journal, 页码：9240-9254 , 文章类型： 研究论文，,卷期：2008年14-30] Both matched and mismatched diastereoselection have been obsd. in aldol reactions of a boron enolate of a protected L-erythrulose deriv. with several chiral a-fluoro and a-amino aldehydes. Strict adherence to the Felkin... Unprecedented consecutive, competitive nucleophilic addition to construct densely functionalized propargylic alcohols. [作者：Liu, Jie;An, Yan;Wang, Ya-Hui;Jiang, Hai-Ying;Zhang, Yu-Xin;Chen, Zili;,期刊：Chemistry-A European Journal, 页码：9131-9134 , 文章类型： 研究论文，,卷期：2008年14-30] A new tandem reaction involving two consecutive, competitive nucleophilic addns. was developed to construct a series of densely functionalized propargylic alc. derivs. from simple materials without functional protection,... Long-alkyl-chain quaternary ammonium lactate based ionic liquids. [作者：Cybulski, Jacek;Wisniewska, Anna;Kulig-Adamiak, Anna;Lewicka, Lidia;Cieniecka-Roslonkiewicz, Anna;Kita, Kazimierz;Fojutowski, Andrzej;Nawrot, Jan;Materna, Katarzyna;Pernak, Juliusz;,期刊：Chemistry-A European Journal, 页码：9305-9311 , 文章类型： 研究论文，,卷期：2008年14-30] A new group of quaternary ammonium lactate based ionic liqs. have been prepd. and characterized. Didecyldimethylammonium (DDA) and benzalkonium (BA) D,L- and L-lactates are air-stable, hydrophilic, surface-active salts.... Investigation of a possible solvent cage effect in the reduction of 4-aminocyclohexanone by a hydroxycyclopentadienyl ruthenium hydride. [作者：Aaberg, Jenny B.;Baeckvall, Jan-E.;,期刊：Chemistry-A European Journal, 页码：9169-9174 , 文章类型： 研究论文，,卷期：2008年14-30] No solvent cage effect could be found in the redn. of 4-aminocyclohexanone 3 by Shvo's hydroxycyclopentadienyl ruthenium hydride 2. No preference was obsd. in the complex formation from trapping by aminoalc. product 4 o... Is the Hoveyda-Grubbs complex a vinylogous Fischer-type carbene? aromaticity-controlled activity of ruthenium metathesis catalysts. [作者：Barbasiewicz, Michal;Szadkowska, Anna;Makal, Anna;Jarzembska, Katarzyna;Wozniak, Krzystof;Grela, Karol;,期刊：Chemistry-A European Journal, 页码：9330-9337 , 文章类型： 研究论文，,卷期：2008年14-30] Three naphthalene-based analogs (4a-c) (I, II, III) of the Hoveyda-Grubbs metathesis catalyst exhibited immense differences in reactivity. Systematic structural and spectroscopic studies revealed that the ruthenafurane ... Mechanism of the palladium-catalyzed carbohydroxylation of allene-substituted conjugated dienes: rationalization of the recently observed nucleophilic attack by water on a (p-allyl)palladium intermediate. [作者：Karlsson, Erik A.;Baeckvall, Jan-E.;,期刊：Chemistry-A European Journal, 页码：9175-9180 , 文章类型： 研究论文，,卷期：2008年14-30] The mechanism of the palladium-catalyzed oxidative carbohydroxylation of allene-substituted 1,3-cyclohexadiene was studied by DFT calcns. All intermediates and transition states of the reaction were identified and their... Base-labile group for 2'-OH protection of ribonucleosides: a major challenge for RNA synthesis. [作者：Lavergne, Thomas;Bertrand, Jean-Remi;Vasseur, Jean-Jacques;Debart, Francoise;,期刊：Chemistry-A European Journal, 页码：9135-9138 , 文章类型： 研究论文，,卷期：2008年14-30] A novel methodol. that disrupts the dogma "RNA synthesis is incompatible with a whole base-labile strategy" has been developed. In this strategy, 2'-OH groups are protected by pivaloyloxymethyl groups, compatible with st... Stereoselective synthesis of L-guluronic acid alginates. [作者：Dinkelaar, Jasper;van den Bos, Leendert J.;Hogendorf, Wouter F. J.;Lodder, Gerrit;Overkleeft, Herman S.;Codee, Jeroen D. C.;van der Marel, Gijsbert A.;,期刊：Chemistry-A European Journal, 页码：9400-9411 , 文章类型： 研究论文，,卷期：2008年14-30] The glycosylation properties of gulopyranosides have been mapped out, and it is shown that gulose has an intrinsic preference for the formation of 1,2-cis-glycosidic bonds. It is postulated that this glycosylation behav... Novel guanidine-containing molecular transporters based on lactose scaffolds: lipophilicity effect on the intracellular organellar selectivity. [作者：Biswas, Goutam;Jeon, Ock-Youm;Lee, Woo Sirl;Kim, Dong-Chan;Kim, Kyong-Tai;Lee, Suho;Chang, Sunghoe;Chung, Sung-Kee;,期刊：Chemistry-A European Journal, 页码：9161-9168 , 文章类型： 研究论文，,卷期：2008年14-30] We have synthesized two lactose-based mol. transporters, each contg. seven guanidine residues attached to the lactose scaffold through w-amino-carboxylate linker chains of two different lengths, and have examd. their cel... A gold-catalyzed entry into the sesquisabinene and sesquithujene families of terpenoids and formal total syntheses of cedrene and cedrol. [作者：Fuerstner, Alois;Schlecker, Andreas;,期刊：Chemistry-A European Journal, 页码：9181-9191 , 文章类型： 研究论文，,卷期：2008年14-30] A concise entry into the bicyclic cyclopropyl ketone derivs. I and II by the way of a gold-catalyzed Ohloff-Rautenstrauch-type enyne cycloisomerization is described. The required substrates were prepd. by an asym. addn.... Theoretical insights into enantioselective catalysis: the mechanism of the Kharasch-Sosnovsky reaction. [作者：Mayoral, Jose Antonio;Rodriguez-Rodriguez, Sergio;Salvatella, Luis;,期刊：Chemistry-A European Journal, 页码：9274-9285 , 文章类型： 研究论文，,卷期：2008年14-30] The mechanism of the asym. acyloxylation of cyclohexene by tert-Bu perbenzoate, catalyzed by chiral copper(I) bis-oxazoline complex, producing 2-cyclohexen-1-yl benzoate (Kharasch-Sosnovsky reaction) was explored using B... Amino acid-catalyzed cascade [3+2]-cycloaddition/hydrolysis reactions based on the push-pull dienamine platform: synthesis of highly functionalized NH-1,2,3-triazoles. [作者：Ramachary, Dhevalapally B.;Ramakumar, Kinthada;Narayana, Vidadala V.;,期刊：Chemistry-A European Journal, 页码：9143-9147 , 文章类型： 研究论文，,卷期：2008年14-30] A practical and environmentally friendly amino acid catalyzed cascade process for the synthesis of highly substituted NH-1,2,3-triazoles was achieved through cascade [3+2]-cycloaddn./hydrolysis of Hagemann's esters with ... Cyclophane-type imidazolium salts with planar chirality as a new class of N-heterocyclic carbene precursors. [作者：Matsuoka, Yuki;Ishida, Yasuhiro;Sasaki, Daisuke;Saigo, Kazuhiko;,期刊：Chemistry-A European Journal, 页码：9215-9222 , 文章类型： 研究论文，,卷期：2008年14-30] Cyclophane-type imidazolium salts with planar chirality were synthesized from enantiopure 2-amino alcs., of which the N(1) and N(3) positions were connected with a bridge. The structural profiles of the imidazolium salt... An enolisable barbiturate with adjustable hydrogen-bonding structure for UV/Vis detection of nucleic acid bases and related compounds. [作者：Bolz, Ina;Spange, Stefan;,期刊：Chemistry-A European Journal, 页码：9338-9346 , 文章类型： 研究论文，,卷期：2008年14-30] The use of hydrogen-bonding patterns in the same way as is known from DNA building blocks is a challenge for the construction of novel types of suitable chromophoric probes. This feature has been utilized for the constr...