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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   Palladium-Catalyzed Benzylic Arylation of 2-Methyl Azaarenes [作者：BURTON PAUL M; MORRIS JAMES A,期刊：Organic Letters, 页码：5359-5361 , 文章类型： Article，,卷期：2010年12-23] A palladium-catalyzed benzylic sp(3) direct arylation of electron-deficient heterocycles is reported. The method described enables the introduction of electron-rich and -poor aromatics at the benzylic position of heteroc... Gold(I)-Catalyzed Cycloisomerization of beta-Alkynylpropiolactones to Substituted alpha-Pyrones [作者：DOMBRAY THOMAS; BLANC AURELIEN; WEIBEL JEANMARC; PALE PATRICK,期刊：Organic Letters, 页码：5362-5365 , 文章类型： Article，,卷期：2010年12-23] Substituted alpha-pyrones were straightforwardly synthesized in good to excellent yields by a new gold(I)-catalyzed rearrangement of beta-alkynylpropiolactones. Diastereoselective Syntheses of Indoloquinolizidines by a Pictet-Spengler/Lactamization Cascade [作者：FANG HUIHUI; WU XIAOYU; NIE LINLIN; DAI XIAOYANG; CHEN JIE; CAO WEIGUO; ZHAO GANG,期刊：Organic Letters, 页码：5366-5369 , 文章类型： Article，,卷期：2010年12-23] An expedient diastereoselective synthesis of highly functionalized indolo[2,3-alpha]quinolizidines adopting a cis H2/H12b geometry has been realized by a Pictet-Spengler/lactamization cascade sequence. The absolute stere... Rhodium-Catalyzed Activation of C(sp(3))-X (X = Cl, Br) Bond: An Intermolecular Halogen Exchange Case [作者：WANG JIANPING; TONG XIAOFENG; XIE XIAOMIN; ZHANG ZHAOGUO,期刊：Organic Letters, 页码：5370-5373 , 文章类型： Article，,卷期：2010年12-23] A RhCl(PPh3)(3)-catalyzed halogen-exchange reaction between allyl and alkyl halides with beta-H atoms was observed. The possible mechanism of the reaction involves oxidative addition and reductive elimination of the C(sp... Biradical Character of Linear pi-Conjugated Oligomer Dications Composed of Thiophene, Pyrrole, and Methylthio End-Capping Units [作者：NISHINAGA TOHRU; TATENO MASAKI; FUJII MIKA; FUJITA WATARU; TAKASE MASAYOSHI; IYODA MASAHIKO,期刊：Organic Letters, 页码：5374-5377 , 文章类型： Article，,卷期：2010年12-23] Combined DFT calculations and UV-vis-NIR, ESR, and SQUID measurements revealed that the ground-state electronic structure of a linear pi-conjugated oligomer dication composed of two pyrrole and six or seven thiophene rin... Isomerization of Allyl Ethers Initiated by Lithium Diisopropylamide [作者：SU CHICHEUNG; WILLIARD PAUL G,期刊：Organic Letters, 页码：5378-5381 , 文章类型： Article，,卷期：2010年12-23] Lithium diisopropylamide (LDA) promotes virtually quantitative conversion of allylic ethers to (Z)-propenyl ethers. It was discovered that allylic ethers can be isomerized efficiently with very high stereoselectivity to ... Conformationally Locked Calixarene-Based Histone Deacetylase Inhibitors [作者：CHINI MARIA GIOVANNA; TERRACCIANO STEFANIA; RICCIO RAFFAELE; BIFULCO GIUSEPPE; CIAO ROBERTA; GAETA CARMINE; TROISI FRANCESCO; NERI PLACIDO,期刊：Organic Letters, 页码：5382-5385 , 文章类型： Article，,卷期：2010年12-23] Alkyl- and arylamidocalix[4]arene derivatives 1-11 have been designed and theoretically evaluated by docking studies as potential histone. deacetylase inhibitors (HDACi). On the basis of the trimodal distribution of the ... Di- and Trisubstituted gamma-Lactams via Rh(II)-carbenoid Reaction of N-C-alpha-Branched, N-Bis(trimethylsilyl)methyl alpha-Diazoamides. Synthesis of (+/-)-alpha-Allokainic Acid [作者：ZHANG BAO; WEE ANDREW G H,期刊：Organic Letters, 页码：5386-5389 , 文章类型： Article，,卷期：2010年12-23] AcyclicN-C-alpha-branched, N-bis(trimethylsilyl)methyl (N-BTMSM) diazoamides undergo regio-, chemo-, and diastereoselective Rh(II)-carbenoid C-H insertion to give 4,5-disubstituted and 3,4,5-trisubstituted gamma-lactams.... Water-Induced Switching of beta-Structure to Polyproline II Conformation in the 4S-Aminoproline Polypeptide via H-Bond Rearrangement [作者：SONAR MAHESH V; GANESH KRISHNA N,期刊：Organic Letters, 页码：5390-5393 , 文章类型： Article，,卷期：2010年12-23] 4S-Aminoproline polypeptide 2 forms unusual beta-structure in trifluoroethanol that switches to the polyproline II (PPII) form in aqueous medium. while 4R-aminoproline peptide 1 retains PPII form in both solvents. This f... Cu-Catalyzed Efficient Synthetic Methodology for Ebselen and Related Se-N Heterocycles [作者：BALKRISHNA SHAH JAIMIN; BHAKUNI BHAGAT SINGH; CHOPRA DEEPAK; KUMAR SANGIT,期刊：Organic Letters, 页码：5394-5397 , 文章类型： Article，,卷期：2010年12-23] An efficient copper-catalyzed method for the synthesis of biologically important ebselen and related analogues containing a Se-N bond has been developed. This is the first report of a catalytic process of selenation and ... Preparation of 2-Magnesiated 1,3,5-Triazines via an Iodine-Magnesium Exchange [作者：PENG ZHIHUA; HAAG BENJAMIN A; KNOCHEL PAUL,期刊：Organic Letters, 页码：5398-5401 , 文章类型： Article，,卷期：2010年12-23] Functionalized iodo- and diiodo-1,3,5-triazine derivatives readily undergo an I/Mg exchange with BuMgCl, sBuMgCl, or OctMgBr at low temperatures. furnishing 2-magnesiated and 2-zincated 1,3,5-triazines (after transmetala... Catalytic Asymmetric Formal [4+1] Annulation Leading to Optically Active cis-Isoxazoline N-Oxides [作者：SHI ZUGUI; TAN BIN; LEONG WENDY WEN YI; ZENG XIAOFEI; LU MIN; ZHONG GUOFU,期刊：Organic Letters, 页码：5402-5405 , 文章类型： Article，,卷期：2010年12-23] The catalytic asymmetric synthesis of densely functionalized cis-isoxazoline N-oxides was realized with novel use of an organocatalyst, (S)-2-(azidodiphenylmethyl)pyrrolidine (4e) (Tan, B.; Zhu, D.; Zhang, L.; Chua, P. J... Azine-Based Receptor for Recognition of Hg2+ Ion: Crystallographic Evidence and Imaging Application in Live Cells [作者：SURESH MOORTHY; MANDAL AMAL KUMAR; SAHA SUKDEB; SURESH E; MANDOLI AMIT; DI LIDDO ROSA; PARNIGOTTO PIER PAOLO; DAS AMITAVA,期刊：Organic Letters, 页码：5406-5409 , 文章类型： Article，,卷期：2010年12-23] A newly synthesized azine-based receptor (L) is found to show remarkable specificity toward the Hg2+ ion in aqueous media over other metal ions. Coordination of L to Hg2+ induces a detectable change in color and a turn-o... Non-Nucleoside Building Blocks for Copper-Assisted and Copper-Free Click Chemistry for the Efficient Synthesis of RNA Conjugates [作者：JAYAPRAKASH K N; PENG CHANG GENG; BUTLER DAVID; VARGHESE JOS P; MAIER MARTIN A; RAJEEV KALLANTHOTTATHIL G; MANOHARAN MUTHIAH,期刊：Organic Letters, 页码：5410-5413 , 文章类型： Article，,卷期：2010年12-23] Novel non-nucleoside alkyne monomers compatible with oligonucleotide synthesis were designed, synthesized, and efficiently incorporated into RNA and RNA analogues during solid-phase synthesis. These modifications allowed... Traceless Azido Linker for the Solid-Phase Synthesis of NH-1,2,3-Triazoles via Cu-Catalyzed Azide-Alkyne Cycloaddition Reactions [作者：COHRT A EMIL; JENSEN JAKOB F; NIELSEN THOMAS E,期刊：Organic Letters, 页码：5414-5417 , 文章类型： Article，,卷期：2010年12-23] A broadly useful acid-labile traceless azido linker for the solid-phase synthesis of NH-1,2,3-triazoles is presented. A variety of alkynes were efficiently immobilized on a range of polymeric supports by Cu(I)-mediated a... Practical Asymmetric Synthesis of Bioactive Aminotetralins from a Racemic Precursor Using a Regiodivergent Resolution [作者：WEBSTER ROBERT; BOYER ALISTAIR; FLEMING MATTHEW J; LAUTENS MARK,期刊：Organic Letters, 页码：5418-5421 , 文章类型： Article，,卷期：2010年12-23] Catalyst-controlled asymmetric ring opening of a racemic oxabicyclic alkene leads to two readily separable regioisomeric products both in excellent ee. A cationic Rh catalyst, with added NH4BF4 to modulate reactivity, wa...