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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   The Palladium-Catalyzed Trifluoromethylation of Vinyl Sulfonates [作者：CHO EUN JIN; BUCHWALD STEPHEN L,期刊：Organic Letters, 页码：6552-6555 , 文章类型： Article，,卷期：2011年13-24] A method for the palladium-catalyzed trifluoromethylation of cyclohexenyl sulfonates has been developed. Various cyclohexenyl triflates and nonaflates underwent trifluoromethylation under mild reaction conditions using a... Electronic-State Switching Strategy in the Photochemical Synthesis of lndanones from o-Methyl Phenacyl Epoxides [作者：STACKO PETER; SOLOMEK TOMAS; KLAN PETR,期刊：Organic Letters, 页码：6556-6559 , 文章类型： Article，,卷期：2011年13-24] An electronic excited-state switching strategy has been utilized to control the selectivity of a key photochemical step in the total synthesis of indanorine. The excited-state character of 4,5-dimethoxy-2-methylphenacyl ... Regiospecific Functionalization of Azacalixaromatics through Copper-Mediated Aryl C-H Activation and C-O Bond Formation [作者：WANG ZULI; ZHAO LIANG; WANG MEIXIANG,期刊：Organic Letters, 页码：6560-6563 , 文章类型： Article，,卷期：2011年13-24] Regiospecific functionalization of tetraazacalix[1]arene[3]pyridines at the lower rim position of the benzene ring was achieved conveniently from their cross-coupling reaction with both aliphatic alcohols including chira... Intramolecular Michael Reaction of tert-Butylsulfinyl Ketimines: Asymmetric Synthesis of 3-Substituted Indanones [作者：FUSTERO SANTOS; RODRIGUEZ ELSA; HERRERA LIDIA; ASENSIO AMPARO; MAESTRO MIGUEL A; BARRIO PABLO,期刊：Organic Letters, 页码：6564-6567 , 文章类型： Article，,卷期：2011年13-24] Aromatic tert-butylsulfinyl ketimines bearing a suitable Michael acceptor at the ortho position readily undergo an intramolecular conjugate addition achieving indanone derivatives in good yields and complete diastereosel... Asymmetric Hydrogenation of 2-and 2,3-Substituted Quinoxalines with Chiral Cationic Ruthenium Diamine Catalysts [作者：QIN JIE; CHEN FEI; DING ZIYUAN; HE YANMEI; XU LIJIN; FAN QINGHUA,期刊：Organic Letters, 页码：6568-6571 , 文章类型： Article，,卷期：2011年13-24] The enantioselective hydrogenation of 2-alkyl- and 2-aryl-subsituted quinoxalines and 2,3-disubstituted quinoxalines was developed by using the cationic Ru(eta(6)-cymene)(monosulfonylated diamine)(BArF) system in high yi... Origins of Aryl Substituent Effects on the Stereoselectivities of Additions of Silyl Enol Ethers to a Chiral Oxazolinium Ion [作者：KRENSKE ELIZABETH H,期刊：Organic Letters, 页码：6572-6575 , 文章类型： Article，,卷期：2011年13-24] Density functional theory calculations are reported that reveal the role of aromatic interactions in the additions of aryl-substituted silyl enol ethers to a chiral oxazolinium ion. Aryl-substituted silyl enol ethers giv... Enantioselective Preparation of P-Chiral Phosphine Oxides [作者：ADAMS HARRY; COLLINS REBECCA C; JONES SIMON; WARNER CHRISTOPHER J A,期刊：Organic Letters, 页码：6576-6579 , 文章类型： Article，,卷期：2011年13-24] A highly efficient chiral auxiliary-based strategy for the asymmetric synthesis of P-chiral phosphine oxides in >98:2 er has been developed. The methodology involves the highly stereoselective formation of P-chiral oxazo... Erythrazoles A-B, Cytotoxic Benzothiazoles from a Marine-Derived Erythrobacter sp. [作者：HU YOUCAI; MACMILLAN JOHN B,期刊：Organic Letters, 页码：6580-6583 , 文章类型： Article，,卷期：2011年13-24] Chemical examination of an extract from an Erythrobacter sp. isolated from mangrove sediments yielded erythrazoles A (1) and B (2). The erythrazoles are of mixed biosynthetic origin containing a tetrasubstituted benzothi... The Decarboxylative Strecker Reaction [作者：DAS DEEPANKAR; RICHERS MATTHEW T; MA LONGLE; SEIDEL DANIEL,期刊：Organic Letters, 页码：6584-6587 , 文章类型： Article，,卷期：2011年13-24] alpha-Amino acids react with aldehydes in the presence of a cyanide source to form alpha-amino nitriles in what can be considered a decarboxylative variant of the classical Strecker reaction. This unprecedented transform... Intramolecular [2+2] Cycloaddition Reactions of Alkynyl Ether Derived Ketenes. A Convenient Synthesis of Donor-Acceptor Cyclobutanes [作者：TRAN VINCENT; MINEHAN THOMAS G,期刊：Organic Letters, 页码：6588-6591 , 文章类型： Article，,卷期：2011年13-24] Mild thermolysis of tert-butyl alkynyl ethers furnishes aldoketenes, which undergo facile [2 + 2] cycloaddition reactions with pendant di- and trisubstituted alkenes. A wide variety of cis-fused cyclobutanones are produc... De Novo Asymmetric Synthesis of Fridamycin E [作者：CHEN QIAN; MULZER MICHAEL; SHI PEI; BEUNING PENNY J; COATES GEOFFREY W; ODOHERTY GEORGE A,期刊：Organic Letters, 页码：6592-6595 , 文章类型： Article，,卷期：2011年13-24] A de novo asymmetric synthesis of (R)- and (S)-fridamycin E has been achieved. The entirely linear route required only nine steps from commercially available starting materials (16% overall yield). Key transformations in... Ethylene in Organic Synthesis: A New Route to Anticholenergic Pyrrolidinoindolines, and Other Molecules with All Carbon-Quaternary Centers via Asymmetric Hydrovinylation [作者：LIM HWAN JUNG; RAJANBABU T V,期刊：Organic Letters, 页码：6596-6599 , 文章类型： Article，,卷期：2011年13-24] The asymmetric hydrovinylation (1 mol % Ni-cat., 1 atm, ethylene, >98% ee) products from 1-methylenetetralines are readily converted into 3, 3-disubstituted oxindoles and subsequently to pyrrolidinoindolines. These hydro... Highly Enantioselective Direct Aldol Reaction Catalyzed by Organic Molecules (vol 8, pg 4099, 2006) [作者：RAJ MONIKA; VISHNUMAYA; GINOTRA SANDEEP K; SINGH VINOD K,期刊：Organic Letters, 页码：6600-6600 , 文章类型： Correction，,卷期：2011年13-24] Efficient Syntheses of the Unknown Quinolino[2,3-c]-cinnolines: Synthesis of Neocryptolepines (vol 12, pg 5505, 2010) [作者：HADDADIN MAKHLUF J; ZERDAN RAGHIDA M BOU; KURTH MARK J; FETTINGER JAMES C,期刊：Organic Letters, 页码：6601-6601 , 文章类型： Correction，,卷期：2011年13-24] Pd(0)-Catalyzed Iodoalkynation of Norbornene Scaffolds: The Remarkable Solvent Effect on Reaction Pathway (vol 13, pg 5073, 2011) [作者：LIU HUI; CHEN CHEN; WANG LIMIN; TONG XIAOFENG,期刊：Organic Letters, 页码：6602-6602 , 文章类型： Correction，,卷期：2011年13-24] One-Step Construction of Tetrahydro-5H-indolo[3,2-c]quinolines from Benzyl Azides and Indoles via a Cascade Reaction Sequence [作者：SONG ZENGQIANG; ZHAO YUMING; ZHAI HONGBIN,期刊：Organic Letters, 页码：6331-6333 , 文章类型： Article，,卷期：2011年13-24] A novel one-step assembly of tetrahydro-5H-indolo[3,2-c]quinolines from benzyl azides and indoles via a formal [4 + 2] cycloaddition is described. A cascade reaction sequence, which involves benzyl azide-to-iminium rearr...