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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71条记录   Palladium-Catalyzed Intramolecular C(sp(2))-H Amidination by Isonitrile Insertion Provides Direct Access to 4-Aminoquinazolines from N-Arylamidines [作者：WANG YONG; WANG HONGGEN; PENG JIANGLING; ZHU QIANG,期刊：Organic Letters, 页码：4604-4607 , 文章类型： Article，,卷期：2011年13-17] An efficient method for the synthesis of 4-amino-2-aryl(alkyl)quinazolines from readily available N-arylamidines and isonitriles via palladium-catalyzed intramolecular aryl C-H amidination by isonitrile insertion has bee... Regio- and Stereoselective Synthesis of 2-Deoxy-C-aryl Glycosides via Palladium Catalyzed Decarboxylative Reactions [作者：XIANG SHAOHUA; CAI SHUTING; ZENG JING; LIU XUEWEI,期刊：Organic Letters, 页码：4608-4611 , 文章类型： Article，,卷期：2011年13-17] An efficient and versatile approach for the synthesis of 2-deoxy-C-aryl glycosides is reported. This strategy is based on a palladium-catalyzed decarboxylative Heck coupling reaction of benzoic acids and glycals. A wide ... Synthesis and Characterization of [1,2,5]Chalcogenazolo[3,4-f]benzo[1,2,3]triazole and [1,2,3]Triazolo[3,4-g]quinoxaline Derivatives [作者：TAM TECK LIP; LI HAIRONG; LAM YENG MING; MHAISALKAR SUBODH G; GRIMSDALE ANDREW C,期刊：Organic Letters, 页码：4612-4615 , 文章类型： Article，,卷期：2011年13-17] The synthesis and characterization is reported of low bandgap [1,2,5]chalcogenazolo[3,4-f]benzo[1,2,3]triazole and [1,2,3]triazolo[3,4-g]quinoxaline derivatives that display higher solubility and stability then their thi... Pseudocryptand-Type [3]Pseudorotaxane and "Hook-Ring" Polypseudo[2]catenane Based on a Bis(m-phenylene)-32-crown-10 Derivative and Bisparaquat Derivatives [作者：NIU ZHENBIN; SLEBODNICK CARLA; GIBSON HARRY W,期刊：Organic Letters, 页码：4616-4619 , 文章类型： Article，,卷期：2011年13-17] The first pseudocryptand-type supramolecular [3]pseudorotaxane was designed and prepared via the self-assembly of a bispicolinate BMP32C10 derivative and a bisparaquat. The complexation behavior was cooperative. In addit... Coumarin-Caged dG for Improved Wavelength-Selective Uncaging of DNA [作者：MENGE CLARA; HECKEL ALEXANDER,期刊：Organic Letters, 页码：4620-4623 , 文章类型： Article，,卷期：2011年13-17] Herein we report on diethylaminocoumarin (DEACM) as a new photoremovable protecting group for 2'-deoxyguanosine in oligonucleotides. An oligonucleotide with O(6)-DEACM-caged dG was synthesized and photochemically analyze... Structures of the Dimeric and Monomeric Chromanones, Gonytolides A-C, Isolated from the Fungus Gonytrichum sp and Their Promoting Activities of Innate Immune Responses [作者：KIKUCHI HARUHISA; ISOBE MASATO; SEKIYA MIZUKI; ABE YUKO; HOSHIKAWA TSUYOSHI; UEDA KAZUNORI; KURATA SHOICHIRO; KATOU YASUHIRO; OSHIMA YOSHITERU,期刊：Organic Letters, 页码：4624-4627 , 文章类型： Article，,卷期：2011年13-17] Innate Immunity is the front line of self-defense against microbial infection. After searching for natural substances that regulate innate immunity using an ex vivo Drosophila culture system, we identified a novel dimeri... Self-Complementary Quadruply Hydrogen-Bonded Duplexes Based on Imide and Urea Units [作者：LI XIANGHUI; FANG YUYU; DENG PENGCHI; HU JINCHUAN; LI TIAN; FENG WEN; YUAN LIHUA,期刊：Organic Letters, 页码：4628-4631 , 文章类型： Article，,卷期：2011年13-17] The quadruply hydrogen-bonded duplexes based on an imide-urea structure preorganized by three-center hydrogen bonds were found to associate via bifurcated hydrogen bonds. (1)H NMR dilution experiments revealed the high s... Unexpected Alkyl Group Migration in Palladium(II) Benzocarbaporphyrins [作者：LASH TIMOTHY D,期刊：Organic Letters, 页码：4632-4635 , 文章类型： Article，,卷期：2011年13-17] Reaction of a benzocarbaporphyrin with methyl or ethyl iodide and potassium carbonate in refluxing acetone primarily afforded the 22-alkylation products. Subsequent metalation with palladium(II) acetate in refluxing acet... Synthesis of 1-Aminoisoquinolines via Rh(III)-Catalyzed Oxidative Coupling [作者：WEI XIAOHONG; ZHAO MIAO; DU ZHENGYIN; LI XINGWEI,期刊：Organic Letters, 页码：4636-4639 , 文章类型： Article，,卷期：2011年13-17] [RhCp*Cl(2)](2) can catalyze the oxidative coupling of N-aryl and N-alkyl benzamidines with alkynes to give N-substituted 1-aminoisoquinolines in high selectivity. Integral Stereocontrolled Synthesis of a Spiro-norlignan, Sequosempervirin A: Revision of Absolute Configuration [作者：ITO YUJI; TAKAHASHI KAZUNORI; NAGASE HIROMASA; HONDA TOSHIO,期刊：Organic Letters, 页码：4640-4643 , 文章类型： Article，,卷期：2011年13-17] A novel synthetic path to sequosempervirin A was established by employing a samarium diiodide promoted intramolecular Barbier-type reaction of the lactonic iodide, In which the key structural feature, a spiro[4.5]decane ... Synthesis of Large Polycyclic Aromatic Hydrocarbons from Bis(biaryl)acetylenes: Large Planar PAHs with Low pi-Sextets [作者：CHEN TSEAN; LIU RAISHUNG,期刊：Organic Letters, 页码：4644-4647 , 文章类型： Article，,卷期：2011年13-17] A new synthesis of large PAHs with low Clar sextets was developed. This synthesis involves initial bis(biaryl)acetylene 1, which undergoes initial ICI-aromatization and a subsequent Mizoroki-Heck coupling reaction to giv... Total Synthesis of Aeruginazole A [作者：BRUNO PAOLO; PENA STELLA; JUSTBARINGO XAVIER; ALBERICIO FERNANDO; ALVAREZ MERCEDES,期刊：Organic Letters, 页码：4648-4651 , 文章类型： Article，,卷期：2011年13-17] The first total synthesis of Aeruginazole A, prepared via a convergent strategy that involved both solid-phase peptide synthesis and solution phase chemistry and that enabled conservation of the stereochemistry of the in... Total Synthesis of (+)-SCH 351448 [作者：ZHU KAICHENG; PANEK JAMES S,期刊：Organic Letters, 页码：4652-4655 , 文章类型： Article，,卷期：2011年13-17] A convergent synthesis of (+)-SCH 351448 (1), a monosodium salt of a C(2)-symmetric macrodiolide, is described. Our approach is based on a [4 + 2] annulation with a chiral allyl silane (anti-5c) to assemble the pyran sub... Silver-Catalyzed Regioselective Carbomagnesiation of Alkynes with Alkyl Halides and Grignard Reagents [作者：KAMBE NOBUAKI; MORIWAKI YUUSUKE; FUJII YUUKI; IWASAKI TAKANORI; TERAO JUN,期刊：Organic Letters, 页码：4656-4659 , 文章类型： Article，,卷期：2011年13-17] A silver-catalyzed carbomagnesiation of alkynes with alkyl halides and Grignard reagents afforded alkenyl Grignard reagents regioselectively, where the alkyl group of the alkyl halide, but not that of the Grignard reagen... Self-Sorting under Solvent-Free Conditions: One-Pot Synthesis of a Hetero[3]rotaxane [作者：CHEN PEINUNG; LAI CHIENCHEN; CHIU SHENGHSIEN,期刊：Organic Letters, 页码：4660-4663 , 文章类型： Article，,卷期：2011年13-17] The one-pot synthesis of a hetero[3]rotaxane, assembled from five different molecular components under solvent-free conditions, through "self-sorting" of the bead and stopper units during the threading and stoppering pro... An Expeditious and Efficient Synthesis of Highly Functionalized [1,6]-Naphthyridines under Catalyst-Free Conditions in Aqueous Medium [作者：MUKHOPADHYAY CHHANDA; DAS PARAMITA; BUTCHER RAY J,期刊：Organic Letters, 页码：4664-4667 , 文章类型： Article，,卷期：2011年13-17] This is the first report of an Innovative, one-pot, catalyst-free, pseudo-five-component synthesis of 1,2-dihydro[1,6]naphthyridines from methyl ketones, amines, and malononitrile In ecofriendly solvent water. The protoc...