- 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...
- 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-...
- 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.
- 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...
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