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24条记录   New a-amido-a-aminonitrones as building blocks for constructing heterocyclic systems. [作者：Trzewik, Bartosz;Ciez, Dariusz;Hodorowicz, Maciej;Stadnicka, Katarzyna;,期刊：Synthesis, 页码：2977-2985 , 文章类型： 研究论文，,卷期：2008年-18] New, stable a-amido a-amino nitrones (Z)-R1N:C(NR1OH)CONHR2 (R1 = Ph, 4-MeC6H4; R2 = 2-pyridyl, 4-methyl-2-pyridyl, 5-methyl-2-pyridyl, 5-nitro-2-pyridyl) were obtained in good yields from N-pyridin-2-yl-3-oxobutyramides... Palladium-mediated direct synthesis of N-substituted 4-methyl- and 4-ethylisoquinolone derivatives. [作者：Majumdar, Krishna C.;Chakravorty, Santanu;Ray, Krishanu;,期刊：Synthesis, 页码：2991-2995 , 文章类型： 研究论文，,卷期：2008年-18] N-Substituted 4-methyl- and 4-ethylisoquinolones are prepd. from different N-allyl-2-iodobenzamides in a single step through a ligand-free palladium-mediated intramol. Heck cyclization. Generation and intermolecular additions of pyridylmethyl radicals. [作者：Ferjancic, Zorana;Quiclet-Sire, Beatrice;Zard, Samir Z.;,期刊：Synthesis, 页码：2996-3008 , 文章类型： 研究论文，,卷期：2008年-18] a variety of otherwise inaccessible pyridine derivs. Bicyclic structures can be obtained by combining the radical addn. with ionic ring-closure steps. Recyclization of (2-aminophenyl)bis(5-tert-butyl-2-furyl)methanes into indole derivatives: unusual dependence on substituent at nitrogen atom. [作者：Butin, Alexander V.;Smirnov, Sergey K.;Tsiunchik, Fatima A.;Uchuskin, Maxim G.;Trushkov, Igor V.;,期刊：Synthesis, 页码：2943-2952 , 文章类型： 研究论文，,卷期：2008年-18] The recyclization of (2-aminophenyl)bis(5-tert-butyl-2-furyl)methanes under acidic conditions was studied. The extent of reaction of these substrates depends on the substituent at the N atom of the aniline moiety. N-To... A novel and efficient method for the synthesis of unsymmetrical diindolylmethanes and heterocyclic (indolyl)alkanes. [作者：Deb, Mohit L.;Bhuyan, Pulak J.;,期刊：Synthesis, 页码：2891-2898 , 文章类型： 研究论文，,卷期：2008年-18] aldehyde, and N,N-dimethylbarbiturate, undergo an elimination-addn. reaction with another indole mol. or heterocyclic nucleophile giving unsym. diindolylmethanes or heterocyclic (indolyl)alkanes in the absence of a catal... A convenient preparation of C-silylated calixarenes. [作者：Hudrlik, Paul F.;Hudrlik, Anne M.;Arasho, Wondwossen D.;Butcher, Raymond J.;,期刊：Synthesis, 页码：2968-2976 , 文章类型： 研究论文，,卷期：2008年-18] Calix[4]arenes having multiple silyl groups on the upper (wide) rim were prepd. from the corresponding bromocalixarenes by halogen-metal exchange with Me3CLi followed by silylation. The best results were obtained using ... DBU-catalyzed addition reactions of sulfonylimidates. [作者：Matsubara, Ryosuke;Kobayashi, Shu;,期刊：Synthesis, 页码：3009-3011 , 文章类型： 研究论文，,卷期：2008年-18] Sulfonylimidates react with various types of N-protected imines in the presence of a catalytic amt. of DBU to afford b-amino sulfonylimidates in high yields and high anti-selectivities. The exptl. procedure is described... The introduction of OH and COOH groups into 4H-imidazoles: water-soluble functional dyes and quinomethides. [作者：Matschke, Martin;Beckert, Rainer;Kubicova, Lenka;Biskup, Christoph;,期刊：Synthesis, 页码：2957-2962 , 文章类型： 研究论文，,卷期：2008年-18] Water-sol. 4H-imidazoles, which represent redox- as well as pH-switchable functional dyes, are synthesized via a novel procedure. In a smooth reaction, phthalic anhydride reacts with an oxalic acid amidine yielding a 4H-... Sulfinimine-mediated asymmetric synthesis of acyclic and cyclic a-aminophosphonates. [作者：Chen, Qianyi;Li, Jinfeng;Yuan, Chengye;,期刊：Synthesis, 页码：2986-2990 , 文章类型： 研究论文，,卷期：2008年-18] Nucleophilic addn. of dialkylphosphites to S-tert-butylsulfinimines proceeds smoothly at room temp. in the presence of potassium carbonate or potassium fluoride, affording acyclic a-alkyl-a-aminophosphonates and a series... Synthesis of (Z)-2-[quinazolin-4(3H)-ylidene]acetonitriles by the reaction of N-(2-cyanophenyl)alkanimidates with 2-lithioacetonitrile. [作者：Kobayashi, Kazuhiro;Ukon, Takahiro;Nakano, Hidenari;Fukamachi, Shuhei;Konishi, Hisatoshi;,期刊：Synthesis, 页码：2874-2878 , 文章类型： 研究论文，,卷期：2008年-18] An efficient prepn. of (Z)-2-[quinazolin-4(3H)-ylidene]acetonitriles was achieved in 1 pot by addn. of LiCH2CN to the cyano C of N-(2-cyanophenyl)alkanimidates, followed by intramol. attack of the resulting imino anion o... A concise synthesis of benzo[h]- and pyrido[3,2-h]-d-carboline-2,4-diones from one-pot reaction of b-lactam carbenes with naphthyl and quinolyl isonitriles. [作者：Shi, Gao-Feng;Kang, Zhi-Mei;Jiang, Xiao-Ping;Cheng, Ying;,期刊：Synthesis, 页码：2883-2890 , 文章类型： 研究论文，,卷期：2008年-18] The 1-pot reaction of b-lactam carbenes with 1-naphthyl or 5-quinolyl isonitriles followed by treatment with aq. HCl produced benzo[h]- or pyrido[3,2-h]-d-carboline-2,4-diones, resp., in moderate yields. The easy availa... Synthesis of bis(aminofuryl)bicinchoninic amides by a one-pot three-component reaction of isocyanides, acetylenic esters, and bicinchoninic acid. [作者：Alizadeh, Abdolali;Oskueyan, Qasem;Rostamnia, Sadegh;Ghanbari-Niaki, Abbass;Mohebbi, Ali Rreza;,期刊：Synthesis, 页码：2929-2932 , 文章类型： 研究论文，,卷期：2008年-18] l)-2-furyl]amino}carbonyl)-2-quinolyl]-4-quinolyl}carbonyl)amino]-3,4-fura ndicarboxylates is described. This involves reaction of isocyanides, acetylenedicarboxylates, and bicinchoninate in MeCN-THF at 25?for 36 h. A quick and advantageous synthesis of 2H-1-benzopyran-2-ones unsubstituted on the pyranic nucleus. [作者：Bratulescu, George;,期刊：Synthesis, 页码：2871-2873 , 文章类型： 研究论文，,卷期：2008年-18] The synthesis of 2H-1-benzopyran-2-ones (coumarins) unsubstituted on the pyranic nucleus was realized by condensation of malate and phenols under mild conditions. A short reaction time, improved yields, good purity of t... The stereoselective synthesis of the C6-C18 fragment of scytophycin C employing a novel synthetic methodology. [作者：Yadav, Jhillu S.;Sunitha, V.;Reddy, Basi V. Subba;Gyanchander, E.;,期刊：Synthesis, 页码：2933-2938 , 文章类型： 研究论文，,卷期：2008年-18] A novel synthetic approach towards the stereoselective synthesis of the C(6)-C(18) fragment (I) of the antitumor agent scytophycin C is described. The synthesis involves Marouka allylation, base-catalyzed intramol. conj... Asymmetric synthesis of (-)-6-epi-centrolobine. [作者：Reddy, Chada Raji;Madhavi, Pasupulety Phani;Chandrasekhar, Srivari;,期刊：Synthesis, 页码：2939-2942 , 文章类型： 研究论文，,卷期：2008年-18] A stereoselective total synthesis of (-)-6-epi-centrolobine, an unnatural analog of (-)-centrolobine, starting from readily available tri-O-acetyl-D-glucal was described. The key steps involved in this synthetic approac... A convenient and practical approach to a-diketones via reactions of internal aryl alkynes with N-iodosuccinimide/water. [作者：Niu, Mingyu;Fu, Hua;Jiang, Yuyang;Zhao, Yufen;,期刊：Synthesis, 页码：2879-2882 , 文章类型： 研究论文，,卷期：2008年-18] A convenient and practical approach to a-diketones via reactions of alkynes with N-iodosuccinimides/water at 70?was developed.