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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80条记录   2-Hydroxy-5-nitrobenzyl as a Diazeniumdiolate Protecting Group: Application in NO-Releasing Polymers with Enhanced Biocompatibility. [作者：Xu, Hua;Reynolds, Melissa M.;Cook, Keith E.;Evans, Anthony S.;Toscano, John P.;,期刊：Organic Letters, 页码：4593-4596 , 文章类型： 研究论文，,卷期：2008年10-20] The 2-hydroxy-5-nitrobenzyl group is shown to be an effective protecting group for diazeniumdiolates. O2-(2-Hydroxy-5-nitrobenzyl)-substituted diazeniumdiolates display enhanced thermal stability, but efficiently release... Synthesis of Macrocycle Isomers via Metathesis Cyclization and Their Self-Assembly from Aqueous Solutions. [作者：Jiang, Jing;Tew, Gregory N.;,期刊：Organic Letters, 页码：4393-4396 , 文章类型： 研究论文，,卷期：2008年10-20] Novel triangular macrocycle isomers were synthesized through metathesis cyclization with high yield (77%). HPLC and MALDI-TOF showed that the purity of the macrocycles was higher than 99%, while 1H NMR clearly showed th... Enantioselective Organocatalytic Conjugate Addition of Aldehydes to Nitrodienes. [作者：Belot, Sebastien;Massaro, Assunta;Tenti, Alice;Mordini, Alessandro;Alexakis, Alexandre;,期刊：Organic Letters, 页码：4557-4560 , 文章类型： 研究论文，,卷期：2008年10-20] The asym. organocatalyzed Michael addn. of aldehydes to a,b-g,d-unsatd. nitro compds. has been accomplished using only 5 mol % of (S)-diphenylprolinol silyl ether and 2 equiv of aldehyde in a mixt. of ethanol and water (... Decarboxylative Allylation using Sulfones as Surrogates of Alkanes. [作者：Weaver, Jimmie D.;Tunge, Jon A.;,期刊：Organic Letters, 页码：4657-4660 , 文章类型： 研究论文，,卷期：2008年10-20] a-Sulfonyl functional groups are traceless activating groups that facilitate catalytic decarboxylative allylations in high yield yet can be cleaved to allow the synthesis of simple allylated alkanes. Substrate studies s... Mild and Efficient Re(VII)-Catalyzed Synthesis of 1,1-Dihydroperoxides. [作者：Ghorai, Prasanta;Dussault, Patrick H.;,期刊：Organic Letters, 页码：4577-4579 , 文章类型： 研究论文，,卷期：2008年10-20] Re2O7 in CH3CN is a remarkably efficient and mild catalyst for the peroxyacetalization of ketones, aldehydes, or acetals by H2O2 to generate 1,1-dihydroperoxides. Me3SiOReO3 and Me rhenium trioxide (MTO) are also effect... Palladium-Catalyzed Benzylic Arylation of N-Benzylxanthone Imine. [作者：Niwa, Takashi;Yorimitsu, Hideki;Oshima, Koichiro;,期刊：Organic Letters, 页码：4689-4691 , 文章类型： 研究论文，,卷期：2008年10-20] 27 The direct benzylic arylation of N-benzylxanthone imine with aryl chloride proceeds under palladium catalysis, yielding the corresponding coupling product. The product is readily transformed to benzhydrylamine derivs... Efficient Iron-Catalyzed N-Arylation of Aryl Halides with Amines. [作者：Guo, Diliang;Huang, He;Xu, Jinyi;Jiang, Hualiang;Liu, Hong;,期刊：Organic Letters, 页码：4513-4516 , 文章类型： 研究论文，,卷期：2008年10-20] 22, 27, 28 A practical and promising protocol was developed for N-arylations of various amines with differently substituted aryl halides. The processes are efficiently promoted by the catalyst system involving the envir... Palladium-Catalyzed Direct Arylation of Nitro-Substituted Aromatics with Aryl Halides. [作者：Caron, Laurence;Campeau, Louis-Charles;Fagnou, Keith;,期刊：Organic Letters, 页码：4533-4536 , 文章类型： 研究论文，,卷期：2008年10-20] Direct arylation reactions of nitrobenzenes and aryl halides occur in good yield and high ortho regioselectivity. These reactions can be performed on gram scale with as few as 3 equiv of the nitro arene relative to the ... An Improved Protocol for the Pd-Catalyzed a-Arylation of Aldehydes with Aryl Halides. [作者：Martin, Ruben;Buchwald, Stephen L.;,期刊：Organic Letters, 页码：4561-4564 , 文章类型： 研究论文，,卷期：2008年10-20] 26, 67 An improved protocol for the Pd-catalyzed a-arylation of aldehydes with aryl halides has been developed. The new catalytic system allows for the coupling of an array of substrates including challenging electron-r... General, Stereoselective Synthesis of (Z)-b,g-Unsaturated Nitriles Promoted by Samarium Diiodide. [作者：Concellon, Jose M.;Rodriguez-Solla, Humberto;Simal, Carmen;Santos, David;Paz, Nieves R.;,期刊：Organic Letters, 页码：4549-4552 , 文章类型： 研究论文，,卷期：2008年10-20] A method to obtain (Z)-b,g-unsatd. nitriles in high or good yields and with moderate or high stereoselectivity is described. The products were achieved through the photoinduced metalation of 3-acetoxy-4-chloronitriles w... Hydrogenation of Hindered Ketones Catalyzed by a Silica-Supported Compact Phosphine-Rh System. [作者：Kawamorita, Soichiro;Hamasaka, Go;Ohmiya, Hirohisa;Hara, Kenji;Fukuoka, Atsushi;Sawamura, Masaya;,期刊：Organic Letters, 页码：4697-4700 , 文章类型： 研究论文，,卷期：2008年10-20] A heterogeneous mono(phosphine)-Rh catalyst system silica-SMAP-Rh(OMe)(cod), where silica-SMAP stands for a caged, compact trialkylphosphine (SMAP) supported on silica gel, showed broad applicability toward the hydrogena... Ruthenium-Catalyzed Stereoselective anti-Markovnikov-Addition of Thioamides to Alkynes. [作者：Goossen, Lukas J.;Blanchot, Mathieu;Salih, Kifah S. M.;Karch, Ralf;Rivas-Nass, Andreas;,期刊：Organic Letters, 页码：4497-4499 , 文章类型： 研究论文，,卷期：2008年10-20] bis(2-methallyl)-cycloocta-1,5-diene-ruthenium(II) and a phosphine was found to efficiently catalyze the addn. of thioamides to terminal alkynes with exclusive formation of the anti-Markovnikov thioenamide products. The ... Phospholipid-Induced Aggregation and Anthracene Excimer Formation. [作者：Chen, Kuan-Hung;Yang, Jye-Shane;Hwang, Chung-Yu;Fang, Jim-Min;,期刊：Organic Letters, 页码：4401-4404 , 文章类型： 研究论文，,卷期：2008年10-20] The zinc complex of anthryl bis(dipicolylamine) (I) aggregates upon binding with long-chain aliph. phosphates and displays anthracene excimer fluorescence, which provides a new strategy toward detection of the biol. impo... Synthesis of 3,5-Difluorotyrosine-Containing Peptides: Application in Substrate Profiling of Protein Tyrosine Phosphatases. [作者：Gopishetty, Bhaskar;Ren, Lige;Waller, Tiffany M.;Wavreille, Anne-Sophie;Lopez, Miguel;Thakkar, Amit;Zhu, Jinge;Pei, Dehua;,期刊：Organic Letters, 页码：4605-4608 , 文章类型： 研究论文，,卷期：2008年10-20] efficiently prepd. by a chemoenzymic process and incorporated into individual peptides and combinatorial peptide libraries. The F2Y-contg. peptides display kinetic properties toward protein tyrosine phosphatases (PTPs) ... A method for detecting water in organic solvents. [作者：Sun, Haoran;Wang, Bijia;DiMagno, Stephen G.;,期刊：Organic Letters, 页码：4413-4416 , 文章类型： 研究论文，,卷期：2008年10-20] The potent dehydrating ability of difluoro(aryl)-l3-iodanes is exploited to develop a convenient 19F-NMR-based aquametry method that is more sensitive than coulometric Karl Fischer titrn. The key difluoro(aryl)-l3-iodan... Fluorescence "Turn On" Chemosensors for Ag+ and Hg2+ Based on Tetraphenylethylene Motif Featuring Adenine and Thymine Moieties. [作者：Liu, Lei;Zhang, Guanxin;Xiang, Junfeng;Zhang, Deqing;Zhu, Daoben;,期刊：Organic Letters, 页码：4581-4584 , 文章类型： 研究论文，,卷期：2008年10-20] Two new tetraphenylethylene (TPE) compds. 1 and 2 bearing adenine and thymine moieties, resp., are fluorescence turn on chemosensors for Ag+ and Hg2+ by making use of the AIE feature of TPE motif and the specific binding...