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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76条记录   Asymmetric 1,3-Dipolar Cycloaddition Reactions of Nitrile Oxides Catalyzed by Chiral Binaphthyldiimine-Ni(II) Complexes. [作者：Suga, Hiroyuki;Adachi, Yuki;Fujimoto, Kouhei;Furihata, Yasuhisa;Tsuchida, Teruko;Kakehi, Akikazu;Baba, Toshihide;,期刊：Journal of Organic Chemistry, 页码：1099-1113 , 文章类型： 研究论文，,卷期：2009年74-3] Asym. cycloaddn. reactions between several nitrile oxides and 3-(2-alkenoyl)-2-oxazolidinones and 2-(2-alkenoyl)-3-pyrazolidinone derivs. were carried out in the presence of chiral binaphthyldiimine (BINIM)-Ni(II) comple... Benzofurans as Efficient Dienophiles in Normal Electron Demand [4 + 2] Cycloadditions. [作者：Chopin, Nathalie;Gerard, Helene;Chataigner, Isabelle;Piettre, Serge R.;,期刊：Journal of Organic Chemistry, 页码：1237-1246 , 文章类型： 研究论文，,卷期：2009年74-3] Dearomatization of electron-poor benzofurans is possible through involvement of the arom. 2,3-carbon-carbon double bond as dienophile in normal electron demand [4 + 2] cycloaddns. The tricyclic heterocycles thereby prod... Kinetic Studies on Nucleophilic Substitution Reactions of O-Aryl Thionobenzoates with Azide, Cyanide, and Hydroxide: Contrasting Reactivity and Mechanism. [作者：Um, Ik-Hwan;Kim, Eun-Hee;Lee, Ji-Youn;,期刊：Journal of Organic Chemistry, 页码：1212-1217 , 文章类型： 研究论文，,卷期：2009年74-3] A kinetic study is reported for nucleophilic substitution reactions of O-Y-substituted Ph thionobenzoates (I) and O-4-nitrophenyl X-substituted thionobenzoates (II) with N3- and CN- in 80 mol% H2O-20 mol% DMSO at 25.0 ?0... Palladium-Catalyzed Cross-Coupling Reactions of Benzyl Indium Reagents with Aryl Iodides. [作者：Chupak, Louis S.;Wolkowski, Joanna P.;Chantigny, Yves A.;,期刊：Journal of Organic Chemistry, 页码：1388-1390 , 文章类型： 研究论文，,卷期：2009年74-3] Herein described is an operationally simple procedure for generating benzyl indium species from readily available benzyl bromides and indium metal followed by in situ palladium-catalyzed coupling with aryl halides. The ... Palladium-Catalyzed Markovnikov Terminal Arylalkynes Hydrostannation: Application to the Synthesis of 1,1-Diarylethylenes. [作者：Hamze, Abdallah;Veau, Damien;Provot, Olivier;Brion, Jean-Daniel;Alami, Mouad;,期刊：Journal of Organic Chemistry, 页码：1337-1340 , 文章类型： 研究论文，,卷期：2009年74-3] The palladium-catalyzed hydrostannation of terminal arylalkynes was achieved. The regioselectivity of the H-Sn bond addn. across the triple bond was found to be controlled by an ortho substituent on the arom. ring, what... Diastereoselective Synthesis of b-Substituted-a,g-Diaminobutyric Acids and Pyrrolidines Containing Multichiral Centers. [作者：Huang, Yan;Li, Qiong;Liu, Tian-Liang;Xu, Peng-Fei;,期刊：Journal of Organic Chemistry, 页码：1252-1258 , 文章类型： 研究论文，,卷期：2009年74-3] A convenient, efficient, and highly diastereoselective synthesis of b-substituted a,g-diaminobutyric acids and pyrrolidines contg. multichiral centers was developed. Michael addn. of chiral tricyclic iminolactones, e.g.... Anion-Controlled Ion-Pair Recognition of Paraquat by a Bis(m-phenylene)-32-crown-10 Derivative Heteroditopic Host. [作者：Zhu, Kelong;Li, Shijun;Wang, Feng;Huang, Feihe;,期刊：Journal of Organic Chemistry, 页码：1322-1328 , 文章类型： 研究论文，,卷期：2009年74-3] It has been demonstrated that the complexation of the divalent salts of paraquat can be greatly improved (a Ka increase up to 219 times was obsd.) by the introduction of ion-pair recognition through use of urea moieties ... Probing Persistent Intramolecular C-H鬃譞 (X = O, S, Br, Cl, and F) Bonding in Solution Using Benzyl Meldrum's Acid Derivatives. [作者：Fillion, Eric;Wilsily, Ashraf;Fishlock, Dan;,期刊：Journal of Organic Chemistry, 页码：1259-1267 , 文章类型： 研究论文，,卷期：2009年74-3] Persistent intramol. interactions between acidic C-H hydrogens and a variety of acceptors (X) (X = O, S, Br, Cl, and F) in soln. were probed by 1H NMR expts., using 5-benzyl Meldrum's acid derivs. To bring about formati... Interconversion of Nitrenes, Azirenes, and Diradicals: Rearrangement of 3-Isoquinolylnitrene to o-Cyanophenylketenimine and 1-Cyanoisoindole. [作者：Vosswinkel, Michael;Luerssen, Holger;Kvaskoff, David;Wentrup, Curt;,期刊：Journal of Organic Chemistry, 页码：1171-1178 , 文章类型： 研究论文，,卷期：2009年74-3] Photolysis of tetrazolo[1,5-b]isoquinoline/3-azidoisoquinoline 22T/22A generates 3-isoquinolylnitrene 23, which has been characterized together with a diradical species (I) by Ar matrix ESR spectroscopy. Photolysis at l ... Quinoxalines XV. Convenient Synthesis and Structural Study of Pyrazolo[1,5-a]quinoxalines. [作者：Sarodnick, Gerhard;Linker, Torsten;Heydenreich, Matthias;Koch, Andreas;Starke, Ines;Furstenberg, Sylvia;Kleinpeter, Erich;,期刊：Journal of Organic Chemistry, 页码：1282-1287 , 文章类型： 研究论文，,卷期：2009年74-3] A series of aryloxymethylquinoxaline oximes, hitherto unknown and synthesized from the corresponding aldehydes, afforded in only one step pyrazolo[1,5-a]quinoxalines in the presence of acetic anhydride at high temps. A ... Absolute Reactivity of Halo(pyridyl)carbenes. [作者：Moya-Barrios, Reinaldo;Cozens, Frances L.;Schepp, Norman P.;,期刊：Journal of Organic Chemistry, 页码：1148-1155 , 文章类型： 研究论文，,卷期：2009年74-3] A comprehensive series of halo(pyridyl)carbenes was generated by laser flash photolysis of the appropriate diazirines. Only the chloro- and bromo(2-pyridyl)carbenes and the chloro- and bromo(3-pyridyl)carbenes could be ... Three Metabolites from the Mangrove Endophytic Fungus Sporothrix sp. (#4335) from the South China Sea. [作者：Wen, Lu;Cai, Xiaoling;Xu, Fang;She, Zhigang;Chan, Wing Lai;Vrijmoed, L. L. P.;Jones, E. B. G.;Lin, Yongcheng;,期刊：Journal of Organic Chemistry, 页码：1093-1098 , 文章类型： 研究论文，,卷期：2009年74-3] Three metabolites, sporothrins A, B, and C (I-III), were isolated from the mangrove endophytic fungus Sporothrix sp. (#4335). Their structures were identified by the spectral data and X-ray diffractive techniques, with ...