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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36条记录   Palladium N-heterocyclic carbene catalysts for synthesis of diaryl ethers. [作者：Akkoc, Mitat;Gurbuz, Nevin;Cetinkaya, Engin;Ozdemir, Ismail;,期刊：SYNLETT, 页码：1781-1784 , 文章类型： 研究论文，,卷期：2008年-12] Novel functionalized 1,3-dialkylimidazolinium (LH) salts as precursors for N-heterocyclic carbenes were prepd. and successfully applied in the palladium-catalyzed synthesis of diaryl ethers and arylation of benzaldehydes... Organocatalyzed enantioselective synthesis of nitroalkanes bearing all-carbon quaternary stereogenic centers through conjugate addition of acetone cyanohydrin. [作者：Bernardi, Luca;Fini, Francesco;Fochi, Mariafrancesca;Ricci, Alfredo;,期刊：SYNLETT, 页码：1857-1861 , 文章类型： 研究论文，,卷期：2008年-12] The first organocatalyzed phase-transfer enantioselective conjugate addn. of cyanide ion derived from acetone cyanohydrin to b,b'-disubstituted nitro olefins is reported. The reaction leads to the efficient formation of... A novel method for the synthesis of N-alkoxyamines starting from nitroxide radicals and ketones. [作者：Dichtl, Alexander;Seyfried, Martin;Schoening, Kai-Uwe;,期刊：SYNLETT, 页码：1877-1881 , 文章类型： 研究论文，,卷期：2008年-12] A new reaction for the conversion of stable nitroxide radicals into the corresponding N-alkoxy amines by a copper-catalyzed ketone-hydrogen peroxide reaction is reported. Catalytic asymmetric electrophilic a-amination of a-cyanoketones in the presence of chiral palladium complexes. [作者：Lee, Ju Hee;Bang, Hyoung Tae;Kim, Dae Young;,期刊：SYNLETT, 页码：1821-1824 , 文章类型： 研究论文，,卷期：2008年-12] The catalytic enantioselective electrophilic a-amination promoted by chiral palladium complexes is described. Treatment of a-cyano ketones with azodicarboxylates as electrophilic amination reagents under mild reaction c... Lewis acid-promoted oxidative rearrangement of tertiary allylic alcohols with the PhIO/TEMPO system. [作者：Vatele, Jean-Michel;,期刊：SYNLETT, 页码：1785-1788 , 文章类型： 研究论文，,卷期：2008年-12] A mild and environmentally friendly method for Lewis acid catalyzed oxidative rearrangement of tertiary allylic alcs. to b-disubstituted enones by the TEMPO/PhIO system was described. Bismuth triflate was the most effic... Synthesis, characterization, and redox property of 3-(2-phenyl-4H-thiochromen-4-ylidene)-3H-chromene-2,4-diones. [作者：Huang, Chin-Neng;Chuang, Rong-Ren;Kuo, Pei-Yu;Yang, Ding-Yah;,期刊：SYNLETT, 页码：1825-1828 , 文章类型： 研究论文，,卷期：2008年-12] Organic Pigments, Fluorescent Brighteners, and Photographic Two (one purple and one blue) 3-(2-phenyl-4H-thiochromen-4-ylidene)-3H-chromene-2,4-dione derivs. were synthesized and evaluated as reversible redox switches. ... Novel N,S-phenacyl protecting group and its application for peptide synthesis. [作者：Tang, Guo;Ji, Tao;Hu, An-Fu;Zhao, Yu-Fen;,期刊：SYNLETT, 页码：1907-1909 , 文章类型： 研究论文，,卷期：2008年-12] The phenacyl group can be introduced onto amino and thio groups by N,S-alkylation reactions. Conversely, these groups are removed rapidly by employing magnesium in acetic acid. This protecting group was successfully ap... Synthesis of new pyrrolobenzazepines via Pictet-Spengler cyclization. [作者：Gracia, Stephanie;Schulz, Jurgen;Pellet-Rostaing, Stephane;Lemaire, Marc;,期刊：SYNLETT, 页码：1852-1856 , 文章类型： 研究论文，,卷期：2008年-12] A new 6-step divergent strategy was developed allowing access to pyrrolobenzazepine structures from pyrrole. This strategy was based on a regioselective Friedel-Crafts acylation followed by a Pictet-Spengler cyclization... Hydrophosphorylation of imines catalyzed by tosyl chloride for the synthesis of a-aminophosphonates. [作者：Kaboudin, Babak;Jafari, Elaheh;,期刊：SYNLETT, 页码：1837-1839 , 文章类型： 研究论文，,卷期：2008年-12] A simple, efficient, and general method has been developed for the synthesis of a-aminophosphonic esters using TsCl as an efficient catalyst. a-Aminophosphonic acids were obtained in good to high yields (65-85%) and pur... Efficient silver-mediated acetalation of b,b'-functionalized chlorins. [作者：Kopke, Tillmann;Pink, Maren;Zaleski, Jeffrey M.;,期刊：SYNLETT, 页码：1882-1888 , 文章类型： 研究论文，,卷期：2008年-12] The authors present a novel synthetic strategy to 2,2-dialkoxy-3-oxochlorins [M = 2H, Ni(II), Cu(II)] (i.e., acetaloxochlorins). Reaction of the corresponding 2,3-dioxochlorin with stoichiometric amts. of Ag triflate (A... First enantioselective synthesis of a hydroxyindolizidine alkaloid from the ant Myrmicaria melanogaster. [作者：Toyooka, Naoki;Zhou, Dejun;Nemoto, Hideo;Tezuka, Yasuhiro;Kadota, Shigetoshi;Jones, Tappey H.;Garraffo, H. Martin;Spande, Thomas F.;Daly, John W.;,期刊：SYNLETT, 页码：1894-1896 , 文章类型： 研究论文，,卷期：2008年-12] The first enantioselective synthesis of the recently reported ant alkaloid I has been achieved starting from com. available lactam II in seven steps and 25% overall yield. The proposed structure of the natural product w... Transition metals in organic synthesis. Part 87. An efficient palladium-catalyzed route to 2-oxygenated and 2,7-dioxygenated carbazole alkaloids - total synthesis of 2-methoxy-3-methylcarbazole, glycosinine, clausine L, mukonidine, and clausine V. [作者：Forke, Ronny;Krahl, Micha P.;Daebritz, Frank;Jaeger, Anne;Knoelker, Hans-Joachim;,期刊：SYNLETT, 页码：1870-1876 , 文章类型： 研究论文，,卷期：2008年-12] Optimization of the palladium(II)-catalyzed oxidative cyclization of N,N-diarylamines, e.g. I, opens up the way to an efficient synthesis of 2-oxygenated and 2,7-dioxygenated carbazole alkaloids including 2-methoxy-3-met... A catalyst-free, convenient construction of eight-membered [1,4]oxazocane-5,8-dione heterocycles from aminoethanols with divinyl succinate. [作者：Chen, Wan-Qin;Zhang, Qing-Yi;Liu, Bo-Kai;Wu, Qi;Lin, Xian-Fu;,期刊：SYNLETT, 页码：1829-1832 , 文章类型： 研究论文，,卷期：2008年-12] A convenient protocol for the synthesis of [1,4]oxazocane-5,8-diones was established by direct cyclization using 2-substituted aminoethanols and divinyl succinate without any catalysts and additives . This strategy is q... Elaboration of the oxazepine ring system via CuI/L-proline-catalyzed intramolecular aryl amination. [作者：Guo, Lei;Li, Ben;Huang, Wenlong;Pei, Gang;Ma, Dawei;,期刊：SYNLETT, 页码：1833-1836 , 文章类型： 研究论文，,卷期：2008年-12] A 2-step approach for assembling oxazepines is described, which started from 2-aminophenols and substituted 2-bromobenzyl bromides and used CuI/L-proline-catalyzed coupling reaction as the key step. Synthesis, characterization, and photoluminescence of thiophene-containing spiro compounds. [作者：Kowada, Toshiyuki;Matsuyama, Yoshio;Ohe, Kouichi;,期刊：SYNLETT, 页码：1902-1906 , 文章类型： 研究论文，,卷期：2008年-12] (Heterocyclic Compounds (One Hetero Atom)) Section Spiro[fluorene-9,4'-[4H]indeno[3,2-b]thiophene] (spiro-FIT) and bis(spiro-FIT)arenes were synthesized via Stille coupling reaction. UV/vis spectra, emission spectra, and... Double functionalization of N-Boc-3-(tosylmethyl)indole exploiting the activating properties of the tosyl group. [作者：Palmieri, Alessandro;Petrini, Marino;Shaikh, Rafik R.;,期刊：SYNLETT, 页码：1845-1851 , 文章类型： 研究论文，,卷期：2008年-12] The anion prepd. from N-Boc-3-(tosylmethyl)indole using NaH in DMF can be readily functionalized by reaction with various electrophiles. The obtained sulfonyl indoles, upon removal of the N-protecting group, undergo nuc...