- Synthesis of symmetrical and unsymmetrical N-aryl-substituted cyclic ureas through copper(I) iodide catalyzed Goldberg-Buchwald-Nandakumar C-N coupling reactions.
[作者:Lee, Chung-Chieh;Wang, Po-Shih;Viswanath, M. Balaji;Leung, Man-kit;,期刊:Synthesis, 页码:1359-1366 , 文章类型: 研究论文,,卷期:2008年-9]
- The catalytic conditions of copper(I) iodide/potassium carbonate/trans-N,N'-dimethylcyclohexane-1,2-diamine, either in toluene at reflux temp., or by heating neat at 150?C effectively promoted the C-N coupling of aryl br...
- Synthesis of a bifunctional monophosphinate DOTA derivative having a free carboxylate group in the phosphorus side chain.
[作者:Rezanka, Pavel;Kubicek, Vojtech;Hermann, Petr;Lukes, Ivan;,期刊:Synthesis, 页码:1431-1435 , 文章类型: 研究论文,,卷期:2008年-9]
- A new bifunctional cyclen-based ligand, 3-[hydroxy({4,7,10-tris[(tert-butoxycarbonyl)methyl]-1,4,7,10-tetraazacycl ododecan-1-yl}methyl)phosphoryl]propanoic acid, was synthesized by alkylation of tri-tert-Bu 1,4,7,10-tet...
- Synthesis of norpandamarilactonines, pandamarilactonines, and pandanamine.
[作者:Gogoi, Sanjib;Argade, Narshinha P.;,期刊:Synthesis, 页码:1455-1459 , 文章类型: 研究论文,,卷期:2008年-9]
- A facile route to naturally occurring (?-norpandamarilactonines A (I) and B, (?-pandamarilactonines A-D, and pandanamine (II) has been described from 3-methylfuran-2(5H)-one, with a reductive intramol. aza-Michael-type a...
- Application of cyclic thiourea as an efficient ligand in palladium-catalyzed Hiyama cross-coupling reactions.
[作者:Wu, Zhi-sheng;Yang, Min;Li, Hong-ling;Qi, Yan-xing;,期刊:Synthesis, 页码:1415-1419 , 文章类型: 研究论文,,卷期:2008年-9]
- Cyclic thiourea has been first utilized as an efficient ligand in palladium-catalyzed Hiyama cross-coupling reactions. In the presence of palladium(II) acetate, N,N'-bis(2,5-di-tert-butylphenyl)-N,N'-ethylenethiourea, u...
- o-Benzenedisulfonimide as reusable Bronsted acid catalyst for acid-catalyzed organic reactions.
[作者:Barbero, Margherita;Cadamuro, Silvano;Dughera, Stefano;Venturello, Paolo;,期刊:Synthesis, 页码:1379-1388 , 文章类型: 研究论文,,卷期:2008年-9]
- Acid-catalyzed org. reactions, such as etherification, esterification, acetal synthesis, cleavage, and interconversion, and pinacol rearrangement were carried out in the presence of catalytic amts. of o-benzenedisulfonim...
- Polyhydroxylated pyrrolidines: synthesis of trideoxy-2,5-iminohexitols.
[作者:Izquierdo, Isidoro;Plaza, Maria T.;Tamayo, Juan A.;Lo Re, Daniele;Sanchez-Cantalejo, Fernando;,期刊:Synthesis, 页码:1373-1378 , 文章类型: 研究论文,,卷期:2008年-9]
- A series of naturally occurring pyrrolidine alkaloids and analogs, with the general structure of trideoxy-2,5-iminohexitols (imino- or azasugars), have been enantiosynthesized using triorthogonally protected pyrrolidines...
- Synthesis and reactivity of (+)-16-deoxo-15-oxoisosteviol.
[作者:Bomkamp, Martin;Gottfried, Katharina;Kataeva, Olga;Waldvogel, Siegfried R.;,期刊:Synthesis, 页码:1443-1447 , 文章类型: 研究论文,,卷期:2008年-9]
- The synthesis of optically pure isosteviol derivs., e.g. I, with a keto function shifted to position 15 and its insertive esterification are described.
- Synthesis of pyrazinothienopyrimidine derivatives by the application of the intramolecular and intermolecular aza-Wittig reaction/heterocyclization.
[作者:Blanco, Gerardo;Quintela, Jose M.;Peinador, Carlos;,期刊:Synthesis, 页码:1397-1403 , 文章类型: 研究论文,,卷期:2008年-9]
- Pyrazino[2',3':4,5]thieno[3,2-d]pyrimidine derivs., e.g. I, were synthesized by the intermol. aza-Wittig reaction of N-heteroaryl phosphazene derivs. with carboxylic acid chlorides. The heterocyclization occurs via imid...
- An unusual polyheterocyclic diversity by the p-cyclisation of N-carbamoyliminium ion, with or without tandem N,N-acetal cleavage, from spiro(imidazolidinoquinazolinones).
[作者:Pesquet, Anthony;Daich, Adam;Coste, Servane;Van Hijfte, Luc;,期刊:Synthesis, 页码:1389-1396 , 文章类型: 研究论文,,卷期:2008年-9]
- Spiro(imidazolidinoquinazolinones), obtained easily in one step from 1-carbamoylisatins, are readily converted in three steps by successive N-alkylations and sodium borohydride regioselective redn. into the corresponding...
- One-pot synthesis of imidazopyridine derivatives.
[作者:Parenty, Alexis D. C.;Cronin, Leroy;,期刊:Synthesis, 页码:1479-1485 , 文章类型: 研究论文,,卷期:2008年-9]
- Two highly efficient and general one-pot annulation reactions are described for the synthesis of imidazopyridine derivs. (IPs). The two procedures are complementary to each other: whereas the first one allows the prodn....
- Microwave-assisted synthesis of N-sec- and N-tert-alkylated indoles.
[作者:Schirok, Hartmut;,期刊:Synthesis, 页码:1404-1414 , 文章类型: 研究论文,,卷期:2008年-9]
- A synthesis of N-substituted indoles, e.g. I, by means of an epoxide-opening, nucleophilic arom. substitution, and dehydration sequence is reported, which is capable of generating even N-tert alkyl substituted derivs.
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