- Chemoselective synthesis of new functionalized tri(pyridinium) triflates and tosylates bearing chalcogenophosphoryl moieties.
[作者:Gusarova, Nina K.;Ivanova, Nina I.;Volkov, Pavel A.;Larina, Ludmila I.;,期刊:Synthesis, 页码:3525-3529 , 文章类型: 研究论文,,卷期:2008年-21]
- equiv. of 4-toluenesulfonic or trifluoromethanesulfonic acids under mild conditions (THF, r.t., 50-80 min, THF) to give the corresponding tri(pyridinium) triflates and tosylates in quant. yields.
- Regiospecific bromination of 2-phenyl-3H-pyrimidin-4-ones.
[作者:Zanatta, Nilo;Fantinel, Leonardo;Fernandes, Liana da S.;Wouters, Ana D.;Bonacorso, Helio G.;Martins, Marcos A. P.;,期刊:Synthesis, 页码:3492-3496 , 文章类型: 研究论文,,卷期:2008年-21]
- Three methods for the regiospecific bromination of 2-phenyl-3H-pyrimidin-4-ones are presented: bromination of the 5-position of the pyrimidine ring, bromination of the 6-benzylic position, and simultaneous bromination of...
- Synthesis of 5-amino-4-(2-azacycloalkylidene)-2-phenyl-2,4-dihydro-3H-pyrazol-3-on es.
[作者:Nazarenko, Konstantin G.;Bova, Sergey I.;Polovinko, Vitaliy;Tolmachev, Andrey A.;,期刊:Synthesis, 页码:3497-3503 , 文章类型: 研究论文,,卷期:2008年-21]
- methylthioalkylidene iminium salts) was investigated. It occurs on the active CH2 group of I to furnish cyclic enamines, 4-(2-azacycloalkylidene)- and 4-(1-methyl-2-azacycloalkylidene)-5-amino-2-phenyl-2,4-dihydro-3H-py...
- An improved preparation of 3-alkoxypyrazoles.
[作者:Guillou, Sandrine;Bonhomme, Frederic J.;Janin, Yves L.;,期刊:Synthesis, 页码:3504-3508 , 文章类型: 研究论文,,卷期:2008年-21]
- The condensation between alkyl acetoacetates and hydrazines constitutes the very well-known Knorr synthetic method leading to pyrazol-3/5-ones. However, contemporary reports describe an alternate reaction pathway leadin...
- Pot, atom, and step economic (PASE) synthesis of highly substituted piperidines: a five-component condensation.
[作者:Clarke, Paul A.;Zaytsev, Andrey V.;Whitwood, Adrian C.;,期刊:Synthesis, 页码:3530-3532 , 文章类型: 研究论文,,卷期:2008年-21]
- The diastereoselective pot, atom, and step economic (PASE) synthesis of highly functionalized piperidines is reported. The procedure simply involves mixing of acetoacetate with 2 equiv arom. aldehyde and 2 equiv aniline...
- Syntheses of aromatic substituted 6'-thiothalidomides.
[作者:Luo, Weiming;Yu, Qian-sheng;Tweedie, David;Deschamps, Jeffery;Parrish, Damon;Holloway, Harold W.;Li, Yazhou;Brossi, Arnold;Greig, Nigel H.;,期刊:Synthesis, 页码:3415-3422 , 文章类型: 研究论文,,卷期:2008年-21]
- A resurgence of interest in thalidomide has occurred as a consequence of its diverse immunomodulatory and anticancer actions, which has fueled interest in synthetic analogs with higher potencies or less undesirable side ...
- A facile one-pot synthesis of substituted pyridine-2,4(1H,3H)-diones from acyl(carbamoyl)ketene S,S-acetals.
[作者:Li, Yunhui;Li, Wenliang;Zhang, Rui;Zhou, Yang;Dong, Dewen;,期刊:Synthesis, 页码:3411-3414 , 文章类型: 研究论文,,卷期:2008年-21]
- A facile and efficient one-pot synthesis of substituted pyridine-2,4(1H,3H)-diones was developed. Subjected to DMF-DMA in DMF at 120? a series of acyl(carbamoyl)ketene dithioacetals was converted into the corresponding ...
- A straightforward synthesis of 2,3,4,5-tetrasubstituted tetrahydrofuran derivatives.
[作者:Aljarilla, Ana;Plumet, Joaquin;,期刊:Synthesis, 页码:3516-3524 , 文章类型: 研究论文,,卷期:2008年-21]
- A concise synthesis of 2,3,4,5-tetrasubstituted tetrahydrofurans starting from furan via 7-oxabicyclo[2.2.1]hept-5-ene-2,3-diols (2,3-dihydroxy-7-oxanorbornenes) is reported. The key step of these transformations was th...
- Extension of the library of biologically active g-alkylidene butenolides.
[作者:Novak, Petr;Pour, Milan;Spulak, Marcel;Votruba, Ivan;Kotora, Martin;,期刊:Synthesis, 页码:3465-3472 , 文章类型: 研究论文,,卷期:2008年-21]
- g-Alkylidene butenolides bearing a deoxyriboside, a steroid, and a ferrocene moiety were synthesized by stereoselective sequential cross-coupling lactonization from appropriate terminal alkynes with 3-iodopropenoates. T...
- Chemoselective etherification of benzyl alcohols using 2,4,6-trichloro-1,3,5-triazine and methanol or ethanol catalyzed by dimethyl sulfoxide.
[作者:Sun, Lili;Guo, Yuping;Peng, Guisheng;Li, Chunbao;,期刊:Synthesis, 页码:3487-3491 , 文章类型: 研究论文,,卷期:2008年-21]
- An efficient method for the transformation of benzyl alcs. into their Me or Et ethers was established using 2,4,6-trichloro-1,3,5-triazine (TCT) and DMSO in MeOH or EtOH. This procedure chemoselectively converts benzyli...
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