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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96条记录   An Improved Larock Synthesis of Quinolines via a Heck Reaction of 2-Bromoanilines and Allylic Alcohols [作者：STONE MATTHEW T,期刊：Organic Letters, 页码：2326-2329 , 文章类型： Article，,卷期：2011年13-9] A modified Larock method has been developed for the one-pot synthesis of substituted quinolines via a Heck reaction of 2-bromoanilines and allylic alcohols followed by dehydrogenation with diisopropyl azodicarboxylate (D... Synthesis of S-(2-Thioxo-1,3-dithiolan-4-yl)methyl Dialkylcarbamothioate and S-Thiiran-2-ylmethyl Dialkylcarbamothioate via Intermolecular O-S Rearrangement in Water [作者：LAL NAND; KUMAR LALIT; SARSWAT AMIT; JANGIR SANTOSH; SHARMA VISHNU LAL,期刊：Organic Letters, 页码：2330-2333 , 文章类型： Article，,卷期：2011年13-9] A facile synthesis of S-(2-thioxo-1,3-dithiolan-4-yl)methyl dialkylcarbamothioates (3) and S-thiiran-2-ylmethyl dialkylcarbamothioate (5) has been reported by the reaction of 5-(chloromethyl)-1,3-oxathiolane-2-thione (1)... An Approach to the Core Structure of Leiodermatolide [作者：RINK CHRISTIAN; NAVICKAS VAIDOTAS; MAIER MARTIN E,期刊：Organic Letters, 页码：2334-2337 , 文章类型： Article，,卷期：2011年13-9] The synthesis of the 16-membered core structure of leiodermatolide 40 has been achieved in 26 linear steps starting from (R)-Roche ester. The key steps in the synthesis of 40 are a Stille cross-coupling between two main ... Thiophene-2-aryl-2H-benzotriazole-thiophene Oligomers with Adjustable Electronic Properties [作者：PASKER FELIX M; LE BLANC STEPHAN M; SCHNAKENBURG GREGOR; HOEGER SIGURD,期刊：Organic Letters, 页码：2338-2341 , 文章类型： Article，,卷期：2011年13-9] The synthesis and the optical and electrochemical properties of 2-aryl-2H-benzotriazole based thiophene oligomers with chemical modifications either on the phenyl side group or on the backbone are presented. All data, su... Copper-Catalyzed Trifluoromethylation of Aryl and Vinyl Boronic Acids with An Electrophilic Trifluoromethylating Reagent [作者：LIU TIANFEI; SHEN QILONG,期刊：Organic Letters, 页码：2342-2345 , 文章类型： Article，,卷期：2011年13-9] A copper-catalyzed trifluoromethylation of aryl- and alkenylboronic acids with Togni's reagent was described. The reaction proceeded in good to excellent yields for a range of different substrates including heteroarylbor... Diasteroselective Preparation of Cyclopropanols Using Methylene Bis(iodozinc) [作者：CHENG KEVIN; CARROLL PATRICK J; WALSH PATRICK J,期刊：Organic Letters, 页码：2346-2349 , 文章类型： Article，,卷期：2011年13-9] A diastereoselective synthesis of trans-2-substituted cyclopropanols is outlined. Bimetallic CH2(ZnI)(2) was found to react with alpha-chloroaldehydes to give cyclopropanols in yields of 64-89% and dr's >= 10:1. The high... Pd-II-Catalyzed Cascade Reaction with 1,3-Chirality Transfer; Stereoselective Synthesis of Chiral Nonracemic 2,2 '-THF-THF Ring Units [作者：UENISHI JUNICHI; FUJIKURA YUHEI; KAWAI NOBUYUKI,期刊：Organic Letters, 页码：2350-2353 , 文章类型： Article，,卷期：2011年13-9] A Pd-II-catalyzed cascade reaction of chiral nonracemic allylic alcohols possessing an internal mono- or diepoxide and a terminal alcohol provided a contiguous THF-THF ring unit stereospecifically. The cyclization takes ... Practical Synthesis of N-Boc- and N-Cbz-alpha-Amido Stannanes from alpha-Amido Sulfones Using TMSSnBu3 and CsF [作者：MITA TSUYOSHI; HIGUCHI YUKI; SATO YOSHIHIRO,期刊：Organic Letters, 页码：2354-2357 , 文章类型： Article，,卷期：2011年13-9] In the presence of TMSSnBu3 and CsF, stannylation of N-Boc- and N-Cbz-alpha-amido sulfones proceeded very well to afford the corresponding alpha-amido stannanes in moderate-to-high yields. This reaction tolerated alpha-a... Metal-Free Direct Arylations of Indoles and Pyrroles with Diaryliodonium Salts [作者：ACKERMANN LUTZ; DELLACQUA MONICA; FENNER SABINE; VICENTE RUBEN; SANDMANN RENE,期刊：Organic Letters, 页码：2358-2360 , 文章类型： Article，,卷期：2011年13-9] Direct arylations of indoles and pyrroles with differently substituted diaryliodonium salts were shown to efficiently proceed in the absence of metal catalysts. Enantioselective Synthesis Induced by Chiral Crystal Composed of DL-Serine in Conjunction with Asymmetric Autocatalysis [作者：KAWASAKI TSUNEOMI; SASAGAWA TAISUKE; SHIOZAWA KAZUYA; UCHIDA MIZUKI; SUZUKI KENTA; SOAI KENSO,期刊：Organic Letters, 页码：2361-2363 , 文章类型： Article，,卷期：2011年13-9] Asymmetric autocatalysis initiated by chiral crystals containing racemic DL-serine was achieved. P- and M-crystals of DL-serine acted as the source of chirality of asymmetric autocatalysis to afford highly enantioenriche... Substitution of Thiophene Oligomers with Macrocyclic End Caps and the Colorimetric Detection of Hg(II) [作者：KADARKARAISAMY MARIAPPAN; THAMMAVONGKEO SOUDSAKHONE; BASA PREM N; CAPLE GERALD; SYKES ANDREW G,期刊：Organic Letters, 页码：2364-2367 , 文章类型： Article，,卷期：2011年13-9] Alkyl substitution at the a position(s) of mono-, bi-, and terthiophenes via electrophilic addition of macrocyclic end caps combines linear, pi-conjugated aromatic compounds and annular macrocycles. Addition of the Hg(II... Rhodium(NHC)-Catalyzed O-Arylation of Aryl Bromides [作者：KIM HYUN JIN; KIM MIN; CHANG SUKBOK,期刊：Organic Letters, 页码：2368-2371 , 文章类型： Article，,卷期：2011年13-9] The first example of the rhodium-catalyzed O-arylation of aryl bromides is reported. While the right combination of rhodium species and N-heterocyclic carbene (NHC) offered an effective catalytic system enabling the aryl... Rhodium-Catalyzed Selective Olefination of Arene Esters via C-H Bond Activation [作者：PARK SAE HUME; KIM JI YOUNG; CHANG SUKBOK,期刊：Organic Letters, 页码：2372-2375 , 文章类型： Article，,卷期：2011年13-9] A new catalytic procedure of ortho-olefination of benzoates and benzaldehydes has been developed. Ester and carboxaldehyde units were revealed to be effective chelating groups in focusing the activation of aryl C-H bonds... Nitrenium Ion-Mediated Alkene Bis-Cyclofunctionalization: Total Synthesis of (-)-Swainsonine [作者：WARDROP DUNCAN J; BOWEN EDWARD G,期刊：Organic Letters, 页码：2376-2379 , 文章类型： Article，,卷期：2011年13-9] The total synthesis of (-)-swainsonine from 2,3-O-isopropylidene-D-erythrose in 12 steps and an overall yield of 28% is reported. The pivotal transformation in our route to this indolizidine alkaloid is the formation of ... Tunable meso-Tetraphenyl-alkyloxazolochlorins and -bacteriochlorins [作者：OGIKUBO JUNICHI; BRUECKNER CHRISTIAN,期刊：Organic Letters, 页码：2380-2383 , 文章类型： Article，,卷期：2011年13-9] Alkyl-Grignard addition to meso-tetraphenylporpholactone generates monoalkyl- and gem-bis-alkyloxazolochlorins. Together with compounds made by further synthetic manipulations of these derivatives, a series of chlorin-ty... A Convergent Route to the CDEF-Tetracycle of Pectenotoxin-2 [作者：CANTERBURY DANIEL P; MICALIZIO GLENN C,期刊：Organic Letters, 页码：2384-2387 , 文章类型： Article，,卷期：2011年13-9] A convergent synthesis of the CDEF-tetracyclic region of pectenotoxin-2 (PTX-2) is described. The synthetic pathway derives from a head-to-tail union of 2 equiv of linalool to establish a stereodefined DEF-tricyclic alde...