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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35条记录   1,7-Electrocyclizations of azomethine ylides: scope and synthetic aspects. [作者：Nyerges, Miklos;Toth, Judit;Groundwater, Paul W.;,期刊：SYNLETT, 页码：1269-1278 , 文章类型： 综述，,卷期：2008年-9] A review. The 1,3-dipolar cycloaddn. of azomethine ylides is a versatile and efficient tool for the construction of five-membered nitrogen heterocycles. When the azomethine ylide is conjugated with double bonds other p... Intramolecular cycloisomerization of aryl-substituted alkylidenecyclopropanes via NHC palladium-catalyzed cascade C-C bond cleavage/C-H activation/C-C bond formation. [作者：Yang, Yewei;Huang, Xian;,期刊：SYNLETT, 页码：1366-1370 , 文章类型： 研究论文，,卷期：2008年-9] A well-defined N-heterocyclic carbene (NHC) palladium-catalyzed intramol. cyclization reaction of aryl-substituted alkylidenecyclopropanes (ACP) to 1-aryl-3,4-dihydronaphthalenes is described. The NHC salts were found t... Solvent- and catalyst-free three-component reaction with b-keto amides for the stereoselective one-pot access to 1,4-diazepines. [作者：Sotoca, Enrique;Constantieux, Thierry;Rodriguez, Jean;,期刊：SYNLETT, 页码：1313-1316 , 文章类型： 研究论文，,卷期：2008年-9] The stereoselective one-pot synthesis of polysubstituted 1,4-diazepine derivs. was achieved via a new solvent- and catalyst-free multicomponent domino reaction from b-keto amides. This green and exptl. simple sequence i... An efficient selective reduction of aromatic azides to amines employing BF3.OEt2/NaI: synthesis of pyrrolobenzodiazepines. [作者：Kamal, Ahmed;Shankaraiah, N.;Markandeya, N.;Reddy, Ch. Sanjeeva;,期刊：SYNLETT, 页码：1297-1300 , 文章类型： 研究论文，,卷期：2008年-9] A selective and facile method for the redn. of arom. azides to amines by employing borontrifluoride di-Et etherate and sodium iodide. This methodol. has been applied towards the prepn. of biol. important imine-contg. py... Peroxide-promoted regioselective arylation of 2-phenylpyridines and related substrates with aryl iodides. [作者：Cheng, Kai;Zhang, Yuhong;Zhao, Jinlong;Xie, Chunsong;,期刊：SYNLETT, 页码：1325-1330 , 文章类型： 研究论文，,卷期：2008年-9] The direct arylation of aryl iodides with 2-phenylpyridines and related substrates was carried out smoothly in the presence of 5 mol% RuCl3 using benzoyl peroxide as a promoter to generate biarylated products in high yie... FeCl3-catalysed cleavage of 1,2-butanediacetal protected diols. [作者：Tzschucke, C. Christoph;Pradidphol, Narathip;Dieguez-Vazquez, Alejandro;Kongkathip, Boonsong;Kongkathip, Ngampong;Ley, Steven V.;,期刊：SYNLETT, 页码：1293-1296 , 文章类型： 研究论文，,卷期：2008年-9] Catalytic FeCl3 in AcOH was employed as a cost-effective, low-toxicity reagent for the removal of butane 1,2-diacetal protecting groups under mild conditions. Intramolecular Friedel-Crafts reaction of indoles with carbonyl groups: a simple synthesis of 3- and 4-substituted b-carbolin-1-ones. [作者：Cincinelli, Raffaella;Dallavalle, Sabrina;Merlini, Lucio;,期刊：SYNLETT, 页码：1309-1312 , 文章类型： 研究论文，,卷期：2008年-9] The intramol. Friedel-Crafts reaction of indole-2-carboxylic acid b-oxoamides catalyzed by trifluoroacetic acid or InCl3, is a convenient method for the synthesis of 3-aryl-, 4-aryl-, and 4-alkyl-b-carbolin-1-ones. Enantioselective synthesis of 3,3-disubstituted indolines via asymmetric intramolecular carbolithiation in the presence of (-)-sparteine. [作者：Groth, Ulrich;Koettgen, Peter;Langenbach, Philipp;Lindenmaier, Andreas;Schuetz, Thorben;Wiegand, Matthias;,期刊：SYNLETT, 页码：1301-1304 , 文章类型： 研究论文，,卷期：2008年-9] N-Allyl-N-benzyl-2-bromoanilines underwent an asym. intramol. carbolithiation in the presence of tert-BuLi and (-)-sparteine yielding 3,3-disubstituted indolines. Novel binaphthalene-amine catalysts for the asymmetric epoxidation of alkenes. [作者：Page, Philip C. Bulman;Farah, Mohamed M.;Buckley, Benjamin R.;Blacker, A. John;Lacour, Jerome;,期刊：SYNLETT, 页码：1381-1385 , 文章类型： 研究论文，,卷期：2008年-9] A range of binaphthalene-derived azepine derivs. contg. alc. functionality were prepd. and utilized as catalysts in the asym. epoxidn. of alkenes by Oxone, giving ?1% ee. Evidence was obtained for the involvement of imi... Enantiomerically pure cyclopropylamines via C-B to C-N conversion. [作者：Pietruszka, Joerg;Solduga, Gemma;,期刊：SYNLETT, 页码：1349-1352 , 文章类型： 研究论文，,卷期：2008年-9] Cyclopropyltrifluoroborates were utilized to form cyclopropylamines in a one-pot procedure. The scope was not only demonstrated by successfully reacting various racemic cis- and trans-2-substituted cyclopropanes as well... A mild synthesis of nitriles by von Braun degradation of amides using triphenyl phosphite-halogen-based reagents. [作者：Vaccari, Daniele;Davoli, Paolo;Spaggiari, Alberto;Prati, Fabio;,期刊：SYNLETT, 页码：1317-1320 , 文章类型： 研究论文，,卷期：2008年-9] A mild procedure for the synthesis of arom. and aliph. nitriles is disclosed. In the presence of Br(PhO)3P+Br- (TPPBr2), N-alkyl and N,N-dialkyl amides undergo von Braun degrdn. to nitriles in good to excellent yields u... Gold(I)-catalyzed cycloisomerization of (arene)chromium complexes with enyne bonds directed towards axially chiral biaryls. [作者：Michon, Christophe;Liu, Suyun;Hiragushi, Shinya;Uenishi, Jun'ichi;Uemura, Motokazu;,期刊：SYNLETT, 页码：1321-1324 , 文章类型： 研究论文，,卷期：2008年-9] Asym. arene-chromium complexes bearing enyne substituents undergo stereoselective cyclization into planar- and axial-chiral h6-biaryl complexes, catalyzed by gold(I) complex [(PPh3)AuNTf2] in good yields. . Cyclization ... Reactions of heterocyclic ketene aminals with Baylis-Hillman acetates: a novel synthesis of tetrahydropyridine-fused 1,3-diaza heterocycles. [作者：Yaqub, Muhammad;Yu, Chu-Yi;Jia, Yue-Mei;Huang, Zhi-Tang;,期刊：SYNLETT, 页码：1357-1360 , 文章类型： 研究论文，,卷期：2008年-9] A novel method for the synthesis of tetrahydropyridine-fused 1,3-diaza heterocycles was developed via the reaction of heterocyclic ketene aminals (HKAs) with Baylis-Hillman acetates (B-H acetates). Silver-catalyzed preparation of oxazolines from N-propargylamides. [作者：Harmata, Michael;Huang, Chaofeng;,期刊：SYNLETT, 页码：1399-1401 , 文章类型： 研究论文，,卷期：2008年-9] Treatment of N-propargylamides with 5 mol% AgSbF6 results in the rapid formation of oxazolines in essentially quant. yield. Efficient synthesis of 2-substituted benzoxazoles via Beckmann rearrangement of 2-hydroxyaryl ketoximes using diethyl chlorophosphate. [作者：Sardarian, A. R.;Shahsavari-Fard, Z.;,期刊：SYNLETT, 页码：1391-1393 , 文章类型： 研究论文，,卷期：2008年-9] An efficient method for the synthesis of 2-substituted benzoxazoles, e.g., I has been developed using di-Et chlorophosphate. 2-Hydroxyaryl ketoximes, e.g., II are efficiently converted to benzoxazoles by heating in the ... Iridium- and rhodium-catalyzed [2+2+2] cycloadditions of diynes with maleimide: a new synthetic route to highly substituted phthalimides. [作者：Alvarez, Leonardo X.;Bessieres, Bernard;Einhorn, Jacques;,期刊：SYNLETT, 页码：1376-1380 , 文章类型： 研究论文，,卷期：2008年-9] The [2+2+2] cycloaddn. of maleimide with a,w-diynes in the presence of [IrCl(cod)]2 or [RhCl(cod)]2 and DPPE gives cyclohexadiene derivs. which are readily aromatized with DDQ or MnO2. This 2-step procedure gives access...