- A new one-pot, three-component synthesis of 2,3,5-substituted or annulated 6-(methylthio)pyridines.
[作者:Yadav, A. K.;Yadav, S. K. S.;Siddiqui, I.;Peruncheralathan, S.;Ila, H.;Junjappa, H.;,期刊:SYNLETT, 页码:2674-2680 , 文章类型: 研究论文,,卷期:2008年-17]
- A new 1-pot, 3-component synthesis of 2,3,5-substituted (or 2,3-annulated)-6-(methylthio)pyridines by reacting acyclic or cyclic active methylene ketones, NH4OAc, and (MeS)2C:CRCHO (R = H, Ph; as C3 1,3-biselectrophiles)...
- A new access to homo- and heterodimers of a-, b-, and g-cyclodextrin by a microwave-promoted Huisgen cycloaddition.
[作者:Cravotto, Giancarlo;Mendicuti, Francisco;Martina, Katia;Tagliapietra, Silvia;Robaldo, Bruna;Barge, Alessandro;,期刊:SYNLETT, 页码:2642-2646 , 文章类型: 研究论文,,卷期:2008年-17]
- A new and efficient synthetic protocol for the prepn. of a-, b- and g-cyclodextrin (CD) homo- and heterodimers is presented. A microwave-promoted Huisgen 1,3-dipolar cycloaddn. will efficiently link together monoazido a...
- First total synthesis of (?-powelline.
[作者:Anwar, Hany F.;Hansen, Trond Vidar;,期刊:SYNLETT, 页码:2681-2683 , 文章类型: 研究论文,,卷期:2008年-17]
- The first total synthesis of (?-powelline (I) is reported in 10% overall yield over eight steps using an intramol. oxidative phenolic coupling reaction as the key reaction.
- Highly active ammonium-tagged olefin-metathesis catalyst for simplified purification.
[作者:Kirschning, Andreas;Gulajski, Lukasz;Mennecke, Klaas;Meyer, Axel;Busch, Torsten;Grela, Karol;,期刊:SYNLETT, 页码:2692-2696 , 文章类型: 研究论文,,卷期:2008年-17]
- When an 2-isopropoxy-substituted benzylidene ligand of a Hoveyda-type Ru-metathesis complex is modified by an addnl. 4-diethylamino group and treated with PTSA it yields a highly active precatalyst suitable for RCM, cros...
- Lewis acid induced highly regioselective synthesis of a new class of substituted isoxazolidines.
[作者:Benfatti, Fides;Cardillo, Giuliana;Gentilucci, Luca;Mosconi, Elisa;Tolomelli, Alessandra;,期刊:SYNLETT, 页码:2605-2608 , 文章类型: 研究论文,,卷期:2008年-17]
- The 1,4-addn. of N,O-bis(trimethylsilyl)hydroxylamine to alkylideneacetoacetates afforded in one step 3,4,5-trisubstituted isoxazolidines. An investigation on the effect of the Lewis acid catalysis on the regioselectivi...
- Syntheses of novel (E)-N-methyl-2-styryl-4-quinolones.
[作者:Almeida, Andreia I. S.;Silva, Vera L. M.;Silva, Artur M. S.;Pinto, Diana C. G. A.;Cavaleiro, Jose A. S.;,期刊:SYNLETT, 页码:2593-2596 , 文章类型: 研究论文,,卷期:2008年-17]
- Two new synthetic routes for (E)-N-methyl-2-styryl-4-quinolones were established, both starting from (E)-2-(cinnamoylamino)acetophenones. In the first, (E)-2-(cinnamoylamino)acetophenones are cyclized and then methylated...
- Systematic study of a solvent-free mechanochemically induced domino oxa-Michael-aldol reaction in a ball mill.
[作者:Gerard, Emilie M. C.;Sahin, Huelya;Encinas, Arantxa;Braese, Stefan;,期刊:SYNLETT, 页码:2702-2704 , 文章类型: 研究论文,,卷期:2008年-17]
- A systematic investigation of parameters influencing on mech. processing, ball milling, of org. reactants was carried out. As model reactions, domino oxa-Michael-aldol reactions yielding tetrahydroxanthenones were chose...
- Synthesis of functionalized dialkyl cyclobutane-1,1-dicarboxylates and alkyl 5,6-dihydro-4H-pyran-3-carboxylates via Michael-induced ring closure of d-chloro-a,b-unsaturated diesters and keto esters.
[作者:Mangelinckx, Sven;Vermaut, Bruno;Verhe, Roland;De Kimpe, Norbert;,期刊:SYNLETT, 页码:2697-2701 , 文章类型: 研究论文,,卷期:2008年-17]
- Michael-induced ring closure (MIRC) of 2-(3-chloro-2,2-dimethylpropylidene)malonate, upon treatment with NaSCMe3, NaOMe, or NaCN in MeOH, provided a short and efficient synthesis of new 2-functionalized cyclobutane-1,1-d...
- Synthesis of 3-arylideneindolin-2-ones from 2-aminophenols by Ugi four-component reaction and Heck carbocyclization.
[作者:Dai, Wei-Min;Shi, Jianyu;Wu, Jinlong;,期刊:SYNLETT, 页码:2716-2720 , 文章类型: 研究论文,,卷期:2008年-17]
- with trans-cinnamic acids, arom. aldehydes and isocyanides in MeOH (50? 48 h) to give the linear a-[N-(2-hydroxyphenyl)-substituted amido] carboxamides, e.g., I, in 54-80% yields. Treatment of the 2-hydroxyphenyl moiety...
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