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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37条记录   Asymmetric Aza-Friedel-Crafts Reaction of 2-Naphthol with Tosylimines Catalyzed by a Dinuclear Zinc Complex [作者：NIU LIANG FENG; XIN YANGCHUN; WANG RENLIN; JIANG FAN; XU PENGFEI; HUI XINPING,期刊：SYNLETT, 页码：765-768 , 文章类型： Article，,卷期：2010年-5] The first asymmetric aza-Friedel-Crafts reaction of 2-naphthol with tosylimines was developed via a dinuclear zinc catalyst (up to 98% ee). It provided a new method for the asymmetric synthesis of Betti base derivatives.... Guanidine Bases in Synthesis: Extending the Scope of the Corey-Chaykovsky Epoxidation [作者：PHILLIPS DAVID J; GRAHAM ANDREW E,期刊：SYNLETT, 页码：769-773 , 文章类型： Article，,卷期：2010年-5] Guanidine bases, such as 1,5,7-triazabicyclo[4.4.0]dec-1-ene (TBD) or 7-methyl-1,5,7-triazabicyclo[4.4.0] dec-1-ene (MTBD), are highly effective reagents for the in situ generation of sulfonium ylides from sulfonium salt... Synthesis of Paracyclophane Thiols via an Unprecedented Reduction-Deprotection Sequence: Direct Conversion of tert-Butyl Sulfoxides into Thiols with Boron Tribromide [作者：FRIEDMANN CHRISTIAN; BRAESE STEFAN,期刊：SYNLETT, 页码：774-776 , 文章类型： Article，,卷期：2010年-5] Starting from readily available paracyclophane-substituted sulfoxides, a two-step procedure including a directed orthometalation and an unprecedented deoxygenation-deprotection sequence allows the generation of versatile... Gold(III)-Catalyzed Synthesis of Isoxazoles by Cycloisomerization of alpha,beta-Acetylenic Oximes [作者：PRAVEEN C; KALYANASUNDARAM A; PERUMAL P T,期刊：SYNLETT, 页码：777-781 , 文章类型： Article，,卷期：2010年-5] Cycloisomerization of alpha, beta-acetylenic oximes leading to substituted isoxazoles was achieved using AuCl3 as catalyst, under moderate reaction conditions. The reaction can be applied to various acetylenic oximes and... Enantioselective One-Pot Rhodium-Catalyzed Cycloisomerization-Wittig Sequence to Chiral Functionalized 4-Alkyl 3-Alkylidene Tetrahydrofuran(on)es [作者：KOERBER NADINE; ROMINGER FRANK; MUELLER THOMAS J J,期刊：SYNLETT, 页码：782-786 , 文章类型： Article，,卷期：2010年-5] Alkyl and (hetero) aryl alkyne allyl alcohols can readily be transformed into chiral 4-alkyl 3-alkylidene tetrahydrofurans and tetrahydrofuranones bearing alpha, beta-unsaturated carbonyl side chains in a one-pot fashion... Synthesis of Water-Soluble Phosphinophenol for Traceless Staudinger Ligation [作者：WEISBROD SAMUEL H; MARX ANDREAS,期刊：SYNLETT, 页码：787-789 , 文章类型： Article，,卷期：2010年-5] The traceless Staudinger ligation can be mediated in water without organic co-solvents if charged groups render the phenylphosphine reagent water soluble. Here the synthesis of a new water-soluble phosphine is presented ... Solvent-Free Anti-Markovnikov Addition of Thiols to Alkenes Using Anhydrous Cerium(III) Chloride as Catalyst [作者：SILVEIRA CLAUDIO C; MENDES SAMUEL R; LIBERO FRANCIELI M,期刊：SYNLETT, 页码：790-792 , 文章类型： Article，,卷期：2010年-5] The anti-Markovnikov addition of thiols to alkenes using CeCl3 as catalyst is described. The products were obtained in good to excellent yields. The reaction occurred under solvent-free conditions at room temperature. Asymmetric Conjugate Addition of Crotylstannane: Synthesis of (-)-Lasiol [作者：WILDING EMILY E; GREGG JOHN J; MULLINS RICHARD J,期刊：SYNLETT, 页码：793-795 , 文章类型： Article，,卷期：2010年-5] Lasiol, the major component of the mandibular gland secretion, serves as the primary sex attractant of the male ant, Lasius meridionalis. Our interest in lasiol stems from the stereochemistry of the chiral methyl substit... Synthetic Route Optimization of PF-00868554, An HCV Polymerase Inhibitor in Clinical Evaluation [作者：JOHNSON SARAH; DROWNS MATT; TATLOCK JOHN; LINTON ANGELICA; GONZALEZ JAVIER; HOFFMAN ROBERT; JEWELL TANYA; PATEL LEENA; BLAZEL JULIE; TANG MINGNAM; LI HUI,期刊：SYNLETT, 页码：796-800 , 文章类型： Article，,卷期：2010年-5] This paper describes the optimization efforts to establish an enabling synthesis to provide multigram quantity of PF-00868554, an HCV polymerase inhibitor currently in phase II clinical evaluations. A Practical One-Pot Transformation of Triphenylphosphine Oxide to Triphenylphosphine by Reduction of in situ Generated Triphenylphosphine Dichloride [作者：YANO TOMOTAKE; HOSHINO MASAKATSU; KUROBOSHI MANABU; TANAKA HIDEO,期刊：SYNLETT, 页码：801-803 , 文章类型： Article，,卷期：2010年-5] One-pot transformation of triphenylphosphine oxide to triphenylphosphine was achieved by the reaction of triphenylphosphine oxide with oxalyl chloride, which led to the formation of triphenylphosphine dichloride, and sub... Rhodium(I)-Catalyzed Synthesis of Aryltriethoxysilanes from Arenediazonium Tosylate Salts with Triethoxysilane [作者：TANG ZHI YONG; ZHANG YUAN; WANG TAO; WANG WEI,期刊：SYNLETT, 页码：804-808 , 文章类型： Article，,卷期：2010年-5] An efficient method for the preparation of aryltriethoxysilanes from arenediazonium tosylate salts has been developed, which expands the substrates of rhodium-catalyzed silylation from iodides, bromides, and triflates to... (PPh3)AuCl/AgOTf-Catalyzed Intermolecular Hydroamination of Alkynes with Sulfonamides To Form N-Sulfonyl Imines [作者：CUI DONGMEI; ZHENG JINZHOU; YANG LIUYANG; ZHANG CHEN,期刊：SYNLETT, 页码：809-811 , 文章类型： Article，,卷期：2010年-5] In the presence of a catalytic amount of (PPh3) AuCl and AgOTf, intermolecular hydroamination of unactivated alkynes with sulfonamides has been shown to proceed and give N-sulfonyl ketimines in medium to excellent yields... A New, Practical and Efficient Method for Protecting Alcohols as tert-Butyl Ethers [作者：BARGE ALESSANDRO; OCCHIATO ERNESTO G; PRANDI CRISTINA; SCARPI DINA; TABASSO SILVIA; VENTURELLO PAOLO,期刊：SYNLETT, 页码：812-816 , 文章类型： Article，,卷期：2010年-5] A new method for protecting alcohols as tert-butyl ethers is reported. The reaction is performed in tert-butyl acetate in the presence of a catalytic amount of HClO4. The process is extremely efficient and primary and se... An Approach to the Oxazoline-Containing Fragments of the Oroidin Dimers Nagelamide R and T [作者：MUKHERJEE SABUJ; SIVAPPA RASAPALLI; YOUSUFUDDIN MUHAMMED; LOVELY CARL J,期刊：SYNLETT, 页码：817-821 , 文章类型： Article，,卷期：2010年-5] A tandem hydrolysis-intramolecular nucleophilic substitution reaction provides an expedient synthesis of the oxazoline moiety found in the oroidin dimers, nagelamide R and the recently isolated nagelamide T. Total Synthesis of (+/-)-Lepadiformine A via Radical Translocation-Cyclization Reaction [作者：FUJITANI MANABU; TSUCHIYA MASAMI; OKANO KENTARO; TAKASU KIYOSEI; IHARA MASATAKA; TOKUYAMA HIDETOSHI,期刊：SYNLETT, 页码：822-826 , 文章类型： Article，,卷期：2010年-5] A total synthesis of (+/-)-lepadiformine A was accomplished through construction of the 1-azaspiro[4.5]decane skeleton by a sequential radical translocation-cyclization reaction. Modified Julia-Kocienski Reaction Promoted by Means of m-NPT (Nitrophenyltetrazole) Sulfone [作者：SAKAI YUKI; IKEUCHI KAZUTADA; YAMADA YUJI; WAKIMOTO TOSHIYUKI; KAN TOSHIYUKI,期刊：SYNLETT, 页码：827-829 , 文章类型： Article，,卷期：2010年-5] m-Nitrophenyltetrazole sulfone (2) was employed in the Julia-Kocienski reaction. The olefination reaction between 2 and carbonyl compounds proceeded smoothly under Masamune-Roush conditions (DBU and LiCl). These conditio...