Asymmetric[2+2]CycloadditionofKetene林华辰•CatalyzedbyNucleophilicCatalyst•CatalyzedbyLewisAcid•CatalyzedbyBifunctionalCatalystCa..
S. A DFT Study on the Reaction Mechanisms of ketene-ketone [2 + 2 + 2] Cycloaddition to Form 3-Aryglutaric Anhydrides under A Lewis Acid Catalysis: What Is the Role of BF3? J. Mol. Catal. A: Chem. 2010, 326, 41-47.Frontier-orbital analyses of ketene [2+2] cycloadditions. ...
Twelve kinds of ketene [2+2] cycloadditions have been investigated by ab initio calculations. They are composed of four ketenes (Y–HC=C=O, Y=H, NH 2 , Cl, and CN) and three isoelectronic ketenophiles (ethylene, methylenimine, and formaldehyde). All the transition state geometries obta...
John Wiley & Sons, Ltd.ChemInformDeFaria et al., " [2+2] cycloaddition reaction of cyclic enecarbamates and enamides with ketenes, A short and efficient synthesis of geissman-Waiss lactone, " Tetrahedron Letters 34(1):27-30 (1993)....
PALOMO, C., MIRANDA, J. I., CUEVAS, C. and ODRIOZOLA, J. M. (1996), ChemInform Abstract: Diastereoselective (2 + 2) Cycloaddition of Dichloroketene with α -Oxyaldehydes and α-Amino Aldehydes. ChemInform, 27: no. doi: 10.1002/chin.199604136 Author Information Dep. Quim. Org., Fac....
a[2+2] Cycloadditions of imines to carbon–carbon multiple [2+2)亚胺Cycloadditions对碳碳倍数[translate] autilized as substrates for [2+2] cycloadditions with imines.[translate] a[2+2] Cycloadditions of imines to ketenes, originally discovered[translate]...
求翻译:[2+2] Cycloadditions of imines to ketenes, originally discovered是什么意思?待解决 悬赏分:1 - 离问题结束还有 [2+2] Cycloadditions of imines to ketenes, originally discovered问题补充:匿名 2013-05-23 12:21:38 匿名 2013-05-23 12:23:18 匿名 2013-05-23 12:24:58 匿名 ...
Suzuki, Silicon- directed regioselective [2+2] cycloaddition of α-alkoxybenzene and ketene silyl acetals. Synlett 2000, 520-522 (2000). doi:10.1055/s-2000-6581Hosoya, T,Hamura, T,Kuriyama, Y,Miyamoto, M,Matsumoto, T,Suzuki, K.Silicon-Directed Regioselective [2+2] Cycloaddition of α-...
AD Mesmaeker, SJ Veenstra, B Ernst - Tetrahedron letters, 1988 - www.sciencedirect.com scheme 2 The selective synthesis of the compound _2 was realized by preventing the abovementioned As expected, the catalytic hydrogenation of the cyclobutanone _10 yielded thecis-anti-cis ring fusion H. V...
Theoretical Study of the [2+2] Cycloaddition of Thioketenes with Imines To Form β‐Thiolactams 来自 Wiley 喜欢 0 阅读量: 16 摘要: Abstract Zwitterionic intermediates play a crucial role in the [2 + 2] cycloaddition reaction between thioketene and formaldimine to ...