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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49条记录   Regioselectivity in Intermolecular Pauson-Khand Reactions of Dissymmetric Fluorinated Alkynes [作者：KIZIRIAN JEANCLAUDE; AIGUABELLA NURIA; PESQUER ALBERT; FUSTERO SANTOS; BELLO PAULA; VERDAGUER XAVIER; RIERA ANTONI,期刊：Organic Letters, 页码：5620-5623 , 文章类型： Article，,卷期：2010年12-24] Stoichiometric and catalytic intermolecular Pauson Khand reactions (PKRs) of dissymmetric fluorinated alkynes were performed, affording regioselectively a-fluorinated cyclopentenones. Ethyl 4,4,4-trifluorobutynoate was a... Chromogenic and Fluorogenic Signaling of Sulfite by Selective Deprotection of Resorufin Levulinate [作者：CHOI MYUNG GIL; HWANG JIYOUNG; EOR SUYOUNG; CHANG SUKKYU,期刊：Organic Letters, 页码：5624-5627 , 文章类型： Article，,卷期：2010年12-24] A new sulfite-selective probe system based on resorufin was investigated. Levulinate of resorufin exhibited a prominent chromogenic and turn-on type fluorogenic signaling toward sulfite ions in aqueous media based on the... Glycosyl Alkoxythioimidates as Complementary Building Blocks for Chemical Glycosylation [作者：RANADE SNEHA C; KAEOTHIP SOPHON; DEMCHENKO ALEXEI V,期刊：Organic Letters, 页码：5628-5631 , 文章类型： Article，,卷期：2010年12-24] It is reported that S-glycosyl O-methyl phenylcarbamothioates (SNea carbamothioates) have a fully orthogonal character in comparison to S-benzoxazolyl (SBox) glycosides. This complete orthogonality was revealed by perfor... Approach Toward the Total Synthesis of 5-Hydroxyaloin A [作者：PROCKO KRISTEN J; LI HUI; MARTIN STEPHEN F,期刊：Organic Letters, 页码：5632-5635 , 文章类型： Article，,卷期：2010年12-24] The synthesis of a thiomethyl analogue of 5-hydroxyaloin A has been achieved using benzyne and naphthyne [4 + 2] cycloadditions with substituted furans. A regiocontrolled cycloaddition was achieved using a silicon tether... Enantioselective Conjugate Addition of Oximes to Trisubstituted beta-Nitroacrylates: An Organocatalytic Approach to beta(2,2)-Amino Acid Derivatives [作者：ZHANG FUGEN; YANG QINGQING; XUAN JUN; LU HAIHUA; DUAN SHUWEN; CHEN JIARONG; XIAO WENJING,期刊：Organic Letters, 页码：5636-5639 , 文章类型： Article，,卷期：2010年12-24] A highly enanlioselective organocatalytic intermolecular conjugate addition of oximes to beta-nitroacrylates has been developed. The highly functionalized adducts obtained are valuable precursors for asymmetric synthesis... Oxidative Cleavage of Alkenes Using an In Situ Generated Iodonium Ion with Oxone as a Terminal Oxidant [作者：THOTTUMKARA PREM P; VINOD THOTTUMKARA K,期刊：Organic Letters, 页码：5640-5643 , 文章类型： Article，,卷期：2010年12-24] A facile and operationally convenient catalytic procedure for oxidative cleavage of alkenes is described. In situ formed [hydroxy(4-carboxyphenyl)iodonium]ion, 2, from the oxidation of 4-iodobenzoic acid, 1, has been sho... Total Syntheses of the Marine Illudalanes Alcyopterosin I, L, M, N, and C [作者：WELSCH TANIA; TRAN HUUANH; WITULSKI BERNHARD,期刊：Organic Letters, 页码：5644-5647 , 文章类型： Article，,卷期：2010年12-24] The combination of a modular assembly of enantiopure triynes and a powerful rhodium-catalyzed [2 + 2 + 2] alkyne cyclotrimerization reaction opens new and efficient entries to a set of alcyopterosins, including the first... Tri-, Tetra- and Pentamers of 9,9 '-Spirobifluorenes through Full ortho-Linkage: High Triplet-Energy Pure Hydrocarbon Host for Blue Phosphorescent Emitter [作者：FAN CONG; CHEN YONGHUA; GAN PEI; YANG CHULUO; ZHONG CHENG; QIN JINGUI; MA DONGGE,期刊：Organic Letters, 页码：5648-5651 , 文章类型： Article，,卷期：2010年12-24] 4,4'-Dibromo-9,9'-spirobifluorene was first synthesized, and from this intermediate, three fully ortho-linked tri-, tetra-, and pentamers of 9,9'-spirobifluorenes were constructed. The full ortho-linkage impedes the pi c... Synthetic Development and Mechanistic Study on Pd(II)-Catalyzed Cyclization of Enediynes to Benzo[a]carbazoles [作者：CHEN CHINCHAU; CHIN LINYU; YANG SHYHCHYUN; WU MINGJUNG,期刊：Organic Letters, 页码：5652-5655 , 文章类型： Article，,卷期：2010年12-24] Treatment of N,N-dimethyl 2[2-(2-ethynylphenyl)ethynyl]anilines (1) with 10 mol he of palladium chloride and 2 equiv of cupric chloride in refluxing THF gave benzo[a]carbazoles (6) in good yields. A mechanistic study sho... Toward the Total Synthesis of Maoecrystal V: Establishment of Contiguous Quaternary Stereocenters [作者：BAITINGER IRINA; MAYER PETER; TRAUNER DIRK,期刊：Organic Letters, 页码：5656-5659 , 文章类型： Article，,卷期：2010年12-24] A synthetic strategy toward maoecrystal V has been identified. It has been shaped by the necessity to maneuver in sterically hindered molecular environments. H-Shaped Oligothiophenes with Low Band Gaps and Amphoteric Redox Properties [作者：LUO JING; HUANG KUOWEI; QU HEMI; ZHANG XIAOJIE; ZHU LIJUN; CHAN HARDY SZE ON; CHI CHUNYAN,期刊：Organic Letters, 页码：5660-5663 , 文章类型： Article，,卷期：2010年12-24] H-shaped bridged oligothiophenes HT-1 and HT-2 were synthesized by two different approaches. Different from normal oligothiophenes, HT-1 and HT-2 showed low band gaps and amphoteric redox behaviors due to intramolecular ... Synthesis of Functionalized Chromans by P(n)Bu3-Catalyzed Reactions of Salicylaldimines and Salicylaldehydes with Allenic Ester [作者：SUN YINWEI; GUAN XIAOYANG; SHI MIN,期刊：Organic Letters, 页码：5664-5667 , 文章类型： Article，,卷期：2010年12-24] P(n)Bu3-catalyzed cyclization reactions of salicylaldimines and salicylaldehydes with ethyl 2,3-butadienoate gave the corresponding functionalized chromans in moderate to good yields in THF under mild conditions. The new... Studies Directed toward the Synthesis of Hamigeran B: A Catalytic Oxidative Cyclization [作者：CAI ZHENGXIN; HARMATA MICHAEL,期刊：Organic Letters, 页码：5668-5670 , 文章类型： Article，,卷期：2010年12-24] An approach to the synthesis of hamigeran B is described. Key steps include a Tius-Nazarov cyclization and a palladium-catalyzed oxidative cyclization of an alpha-hydroxyenone. Efficient Synthesis of 5-Hydroxymethylcytosine Containing DNA [作者：MUENZEL MARTIN; GLOBISCH DANIEL; TRINDLER CHRISTIAN; CARELL THOMAS,期刊：Organic Letters, 页码：5671-5673 , 文章类型： Article，,卷期：2010年12-24] 5-Hydroxymethylcytosine ((5-HOMe)dC) was recently discovered as the sixth base in the mammalian genome. The development of a new phosphoramidite building block is reported, which allows efficient synthesis of (5-HOMe)dC ... One-Pot Thioether Formation from S-Nitrosothiols [作者：ZHANG DEHUI; DEVARIEBAEZ NELMI O; PAN JIA; WANG HUA; XIAN MING,期刊：Organic Letters, 页码：5674-5676 , 文章类型： Article，,卷期：2010年12-24] Protein S-nitrosation is an important post-translational modification. However, the detection of S-nitrosation is still problematic because S-nitrosation products, that is, S-nitrosothiols, are unstable species. Here a n... Concise Formal Total Synthesis of Platensimycin Mediated by a Stereoselective Autoxidation and Hydroxyl Group Directed Conjugative Reduction [作者：MAGNUS PHILIP; RIVERA HERIBERTO; LYNCH VINCE,期刊：Organic Letters, 页码：5677-5679 , 文章类型： Article，,卷期：2010年12-24] The synthesis of 13, an advanced intermediate in the Nicolaou synthesis of platensimycin 1, was made from 9 by autoxidation to give 10, which was stereoselectively reduced providing 12. Finally, dehydration of 12 by heat...