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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   Mild Arming and Derivatization of Natural Products via an In(OTf)(3)-Catalyzed Arene Iodination [作者：ZHOU CONGYING; LI JING; PEDDIBHOTLA SATYAMAHESHWAR; ROMO DANIEL,期刊：Organic Letters, 页码：2104-2107 , 文章类型： Article，,卷期：2010年12-9] Iodination of arene-containing natural products employing N-iodosuccinimide catalyzed by In(OTf)(3) at ambient temperature is reported as a versatile and mild method for natural product derivatization amenable to small s... Pyridine Core Activation via 1,5-Electrocyclization of Vinyl Pyridinium Ylides Generated from Bromo Isomerized Morita-Baylis-Hillman Adduct of Isatin and Pyridine: Synthesis of 3-Spirodihydroindolizine Oxindoles [作者：VISWAMBHARAN BABY; SELVAKUMAR KODIRAJAN; MADHAVAN SUCHITHRA; SHANMUGAM PONNUSAMY,期刊：Organic Letters, 页码：2108-2111 , 文章类型： Article，,卷期：2010年12-9] An activation of the pyridine nucleus has been achieved via 1,5-electrocyclization of vinyl pyridinium ylides generated from bromo isomerized Morita-Baylis-Hillman adducts of isatin and pyridine under basic conditions. T... Vinylogous Aldol Products from Chiral Crotylsilanes Obtained by Enantioselective Rh(II) and Cu(I) Carbenoid Si-H Insertion [作者：WU JIE; CHEN YU; PANEK JAMES S,期刊：Organic Letters, 页码：2112-2115 , 文章类型： Article，,卷期：2010年12-9] Enantioenriched homoallylic ethers containing a alpha,beta-unsaturated ester (syn-vinylogous aldol products) were directly accessed by Lewis acid catalyzed crotylation utilizing chiral silane 2. The reagents were prepare... Room-Temperature Direct Arylation of Polyfluorinated Arenes under Biphasic Conditions [作者：RENE OLIVIER; FAGNOU KEITH,期刊：Organic Letters, 页码：2116-2119 , 文章类型： Article，,卷期：2010年12-9] New biphasic conditions for the palladium-catalyzed direct arylation of electron-poor fluorinated arenes have been developed. Taking advantage of biphasic chemistry, the use of an immiscible mixture of water and an organ... Asymmetric, Organocatalytic, Three-Step Synthesis of alpha-Hydroxy-(E)-beta,gamma-unsaturated Esters [作者：HESS LINDSEY C; POSNER GARY H,期刊：Organic Letters, 页码：2120-2122 , 文章类型： Article，,卷期：2010年12-9] An efficient and enantiocontrolled three-step synthesis of alpha-hydroxy-(E)-beta,gamma-unsaturated esters is reported. Enantioenriched alpha-selenyl aldehydes, prepared in one step by asymmetric, organocatalytic alpha-s... Bis-Anthracene Fused Porphyrins: Synthesis, Crystal Structure, and Near-IR Absorption [作者：DAVIS NICOLA K S; THOMPSON AMBER L; ANDERSON HARRY L,期刊：Organic Letters, 页码：2124-2127 , 文章类型： Article，,卷期：2010年12-9] Synthesis of fused bis-anthracene porphyrin monomers and dimers has been achieved by oxidative ring closure using FeCl3 and Sc(OTf)(3)/DDQ, respectively. The fused compounds display red-shifted absorption spectra with ma... An Unprecedented Method for the Generation of tert-Butylperoxy Radical Using DIB/TBHP Protocol: Solvent Effect and Application on Allylic Oxidation [作者：ZHAO YI; YEUNG YINGYEUNG,期刊：Organic Letters, 页码：2128-2131 , 文章类型： Article，,卷期：2010年12-9] tert-Butylperoxy radical was generated with PhI(OAc)(2) and tBuOOH. Ester solvent was found to be critical and the protocol was applied in the allylic oxidation of various olefinic substrates, which gave the correspondin... Symmetric Six-Fold Arrays of Photo- and Electrochromic Dithienylethene Switches [作者：AREEPHONG JETSUDA; LOGTENBERG HELLA; BROWNE WESLEY R; FERINGA BEN L,期刊：Organic Letters, 页码：2132-2135 , 文章类型： Article，,卷期：2010年12-9] The direct synthesis of six-fold symmetric hexaphenylbenzenes with multiple photochromic dithienylethene units via a cobalt-catalyzed cyclotrimerization is reported. This approach allows for six photochromic units to be ... Base-Catalyzed Halogen Dance Reaction and Oxidative Coupling Sequence as a Convenient Method for the Preparation of Dihalo-bisheteroarenes [作者：GETMANENKO YULIA A; TONGWA PAUL; TIMOFEEVA TATIANA V; MARDER SETH R,期刊：Organic Letters, 页码：2136-2139 , 文章类型： Article，,卷期：2010年12-9] A one-pot preparation of the 2,2'-dibromo-1,1'-bisheteroarenes 3a-d from bromo-heteroarenes utilizing the sequence of the base-catalyzed halogen dance (BCHD) reaction and CuCl2-promoted oxidative coupling of the in situ ... Racemization-Free Synthesis of (S)-(+)-Tylophorine from L-Proline by Radical Cyclization [作者：STOYE ALEXANDER; OPATZ TILL,期刊：Organic Letters, 页码：2140-2141 , 文章类型： Article，,卷期：2010年12-9] The phenanthroindolizidine alkaloid (S)-(+)-tylophorine was synthesized from L-proline in nine linear steps including a double bromination and a free-radical cyclization of an N-aziridinylimine as the key steps. The phen... Decoding Stereocontrol During the Photooxygenation of Oxazolidinone-Functionalized Enecarbamates [作者：SOLOMON MARISSA R; SIVAGURU J; JOCKUSCH STEFFEN; ADAM WALDEMAR; TURRO NICHOLAS J,期刊：Organic Letters, 页码：2142-2145 , 文章类型： Article，,卷期：2010年12-9] Systematically designed oxazolidinone-derived enecarbamates reveal that solvent and temperature effects on the stereoselectivity during photooxygenation are likely due to the conformational flexibility of the chiral phen... Cascade Cyclization To Produce a Series of Fused, Aromatic Molecules [作者：BEHOF WILLIAM J; WANG DONGCHUAN; NIU WEIJUN; GORMAN CHRISTOPHER B,期刊：Organic Letters, 页码：2146-2148 , 文章类型： Article，,卷期：2010年12-9] An efficient synthesis of fully aromatic, fused-ring, monoaza-acenes through a nucleophile initiated cascading cyclization is illustrated. Photophysical properties of the resulting molecules are reported. Total Synthesis of (+)-Decarbamoylsaxitoxin and (+)-Gonyautoxin 3 [作者：IWAMOTO OSAMU; NAGASAWA KAZUO,期刊：Organic Letters, 页码：2150-2153 , 文章类型： Article，,卷期：2010年12-9] Facile construction of the complex saxitoxin (STX) skeleton is carried out by using a novel, conformationally controlled, guanidine cyclization process that relies on the use of neighboring group participation. The utili... Total Synthesis of Kapakahine E and F [作者：ESPEJO VINSON R; RAINIER JON D,期刊：Organic Letters, 页码：2154-2157 , 文章类型： Article，,卷期：2010年12-9] The total synthesis of the cyclic peptides kapakahine E and F using bromopyrroloindoline heterodimerization reactions, indoline to a-carboline rearrangements, and Negishi coupling reactions is described. Total Synthesis and Configurational Validation of (+)-Phorbaside A [作者：PATERSON IAN; PAQUET TANYA,期刊：Organic Letters, 页码：2158-2161 , 文章类型： Article，,卷期：2010年12-9] The configurational assignment of the cytotoxic marine macrolide phorbaside A has been verified by the stereodefined synthesis of the proposed structure 1 and its (18S,19R)-diastereomer 3, followed by correlation using c... Annulated Diketopiperazines from Dipeptides or Schollkopf Reagents via Tandem Cyclization-Intramolecular N-Arylation [作者：LIM HWAN JUNG; GALLUCCI JUDITH C; RAJANBABU T V,期刊：Organic Letters, 页码：2162-2165 , 文章类型： Article，,卷期：2010年12-9] Facile CuI-mediated N-arylation of diketopiperazine using the Fukuyama modification of the Ullmann-Goldberg reaction can be exploited in new approaches to enantiopure polycyclic diketopiperazines from easily assembled di...