个性化文献订阅>文章检索

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28条记录   Electrophilic Functionalization of Non-Activated Olefins Catalyzed by Lewis Superacids [作者：ANTONIOTTI SYLVAIN; POULAINMARTINI SOPHIE; DUNACH ELISABET,期刊：SYNLETT, 页码：2973-2988 , 文章类型： Article，,卷期：2010年-20] The use of metallic triflates and triflimidates as efficient catalysts in recent cycloisomerizations, hydroalkoxylations, hydro-carboxylations, hydrothiolations, Friedel-Crafts reactions, alpha-amidoalkylation and other ... Recent Advances in the Stereochemical Determination and Total Synthesis of Myxobacterial Polyketides [作者：KRETSCHMER MANUEL; MENCHE DIRK,期刊：SYNLETT, 页码：2989-3007 , 文章类型： Article，,卷期：2010年-20] Myxobacteria are a rich source of structurally diverse polyketides with unique architectures. Many of these compounds are associated with high biological activities, including antiproliferative, antibiotic, antifungal, a... Preparation of Isoindolones by a Lithium-Iodide Exchange-Induced Intramolecular Wurtz-Fittig Reaction of o-Iodobenzoyl Chloride/Imine Adducts [作者：CAMPBELL JAMES B; DEDINAS ROBERT F; TRUMBOWERWALSH SALLY,期刊：SYNLETT, 页码：3008-3010 , 文章类型： Article，,卷期：2010年-20] Addition of o-iodobenzoyl chlorides to imines affords N-acyliminium ions, perhaps in equilibrium with alpha-chlorobenzamides, as adducts. Reaction of the adducts with 1.1 equivalents of phenyllithium at -78 degrees C fol... Asymmetric Phase-Transfer-Catalyzed Synthesis of Five-Membered Cyclic gamma-Amino Acid Precursors [作者：NODES WILLAM J; SHANKLAND KENNETH; RAJKUMAR SUNDARAM; COBB ALEXANDER J A,期刊：SYNLETT, 页码：3011-3014 , 文章类型： Article，,卷期：2010年-20] The first example of an intramolecular enantioselective Michael addition of nitronates onto conjugated systems utilizing a chiral phase-transfer catalyst is described. A range of five-membered gamma-nitro esters with up ... An Enantiospecific Approach to the 5-8-5 Tricyclic System of Basmanes [作者：SRIKRISHNA A; NAGARAJU GOPALASETTY; RAVI G,期刊：SYNLETT, 页码：3015-3018 , 文章类型： Article，,卷期：2010年-20] An enantiospecific synthesis of the 5-8-5 tricyclic ring system present in the basmane diterpenes has been accomplished, starting from ethyl 3-isopropyl-2-methylene-1-methylcyclopentane-acetate [readily available in five... An Efficient Method for Aryl Nitro Reduction and Cleavage of Azo Compounds Using Iron Powder/Calcium Chloride [作者：CHANDRAPPA S; VINAYA K; RAMAKRISHNAPPA T; RANGAPPA K S,期刊：SYNLETT, 页码：3019-3022 , 文章类型： Article，,卷期：2010年-20] A novel, efficient Fe/CaCl2 system is revealed for the reduction of nitroarenes and reductive cleavage of azo compounds by catalytic transfer hydrogenation (CTH). The selective reduction of nitro compounds in the presenc... Regioselective Deacetylation and Glycosylation in the Synthesis of the Sialyl Lewis X Tetrasaccharide, a Key Component of the Recognition Site of PSGL-1 [作者：PUDELKO MACIEJ; KOWALCZYK DANUTA; KUNZ HORST,期刊：SYNLETT, 页码：3023-3026 , 文章类型： Article，,卷期：2010年-20] A high-yielding regioselective deprotection of three out of five hydroxy groups of a Lewis X trisaccharide, which proceeds under very mild basic conditions, and a regio- and stereoselective sialylation reaction enable an... Unexpected Regioselectivity in Cycloisomerization of 2-Alkynyl-3-nitrothiophenes [作者：CIKOTIENE INGA; SAZINAS ROKAS; MAZEIKAITE RITA; LABANAUSKAS LINAS,期刊：SYNLETT, 页码：3027-3030 , 文章类型： Article，,卷期：2010年-20] The intramolecular cycloizomerization of 2-alkynyl-3-nitrothiophenes was catalyzed by AuCl3 or CF3CO2Ag to produce the corresponding thieno[3,2-c]isoxazoles bearing carbonyl functionality in position 3 instead of expecte... Site-Selective Suzuki-Miyaura Reactions of the Bis(triflate) of 5,10-dihydroxy-11H-benzo[b]fluoren-11-one [作者：SALMAN GHAZWAN ALI; HUSSAIN MUNAWAR; VILLINGER ALEXANDER; LANGER PETER,期刊：SYNLETT, 页码：3031-3034 , 文章类型： Article，,卷期：2010年-20] 5,10-Diaryl-11H-benzo[b]fluoren-11-ones were prepared by Suzuki-Miyaura reactions of the bis(triflate) of 5,10-dihydroxy-11H-benzo[b]fluoren-11-one. The reactions proceed with excellent site-selectivity. The first attack... Cyclizations of Aminyl Radicals Generated from Substoichiometric Stannane [作者：ZHAI HUIMIN; WICKENDEN JASON G; SAMMIS GLENN M,期刊：SYNLETT, 页码：3035-3038 , 文章类型： Article，,卷期：2010年-20] Substoichiometric amounts of tributyltin hydride were utilized in nitrogen-centered radical cyclizations onto silyl enol ethers for the formation of substituted cyclic imines. N,N-Diisopropylformamidine (DIFA) Protection of Anilines in Metalation Reactions [作者：ZHICHKIN PAUL E; KRASUTSKY SERGIY G; KRISHNAMOORTHY RAVI,期刊：SYNLETT, 页码：3039-3044 , 文章类型： Article，,卷期：2010年-20] A novel N,N-diisopropylformamidine (DIFA) protecting group for anilines was studied. Metalation is often metal-directed by this weakly coordinating and bulky group, making it complementary to ortho-metalation directed by... The Synthesis of Azaperylene-9,10-dicarboximides [作者：ANDREW TRISHA L; VANVELLER BRETT; SWAGER TIMOTHY M,期刊：SYNLETT, 页码：3045-3048 , 文章类型： Article，,卷期：2010年-20] The syntheses of two azaperylene 9,10-dicarboximides are presented. 1-Aza- and 1,6-diazaperylene 9,10-dicarboximides containing a 2,6-diisopropylphenyl substituent at the N-imide position were synthesized in two steps st... A Convenient, One-Pot Procedure for the Preparation of Acyl and Sulfonyl Fluorides Using Cl3CCN, Ph3P, and TBAF(t-BuOH)(4) [作者：KIM JOONGGON; JANG DOO OK,期刊：SYNLETT, 页码：3049-3052 , 文章类型： Article，,卷期：2010年-20] Various carboxylic acids were converted into acyl fluorides in excellent yields by treatment with trichloroacetonitrile, triphenylphosphine, and TBAF(t-BuOH)(4) at room temperature. The reaction was applicable to the pre... Effects of a Flexible Alkyl Chain on an Imidazole Ligand for Copper-Catalyzed Mannich Reactions of Terminal Alkynes [作者：OKAMURA TAKAAKI; ASANO KEISUKE; MATSUBARA SEIJIRO,期刊：SYNLETT, 页码：3053-3056 , 文章类型： Article，,卷期：2010年-20] Copper-catalyzed Mannich reactions of terminal alkynes and secondary amines with aqueous formaldehyde can be accelerated by the use of a catalytic amount of an imidazole ligand carrying a long alkyl chain. The alkyl chai... First Application of Air-Stable and Reusable Phosphine-Containing Calix[4]arene in Catalytic Aza-Morita-Baylis-Hillman Reaction [作者：ZHONG WEIHUI; ZHENG YEMIN; ZHOU JIADI; SHEN YANYAN,期刊：SYNLETT, 页码：3057-3060 , 文章类型： Article，,卷期：2010年-20] For the first time, the aza-Morita-Baylis-Hillman reaction of N-sulfonated imines with methyl vinyl ketone was catalyzed by 5,11,17,23-tetrabutyl-25-(diphenylphosphinomethoxy)-26,27,28-trihydroxyc alix[4]arene (LB1), an ... A New and Efficient Total Synthesis of (+/-)-Laurencenone C [作者：CHU KUOCHING; LIU HSINGJANG; ZHU JIALIANG,期刊：SYNLETT, 页码：3061-3064 , 文章类型： Article，,卷期：2010年-20] A novel total synthesis of laurencenone C, a chamigrene sesquitepenoid natural product, has been accomplished in 11 steps. In the synthetic sequence, the B-ring of the spirocyclic core was constructed by a one-pot operat...