Synthesis of some mono- and bis-spiro-β-lactams of benzylisatin
作者:Aliasghar Jarrahpour、Dariush Khalili
DOI:10.1016/j.tetlet.2007.07.199
日期:2007.10
Some new mono- and bis-spiro-β-lactams of benzylisatin were prepared by Staudinger’s ketene–imine [2+2] cycloaddition reaction. The cycloadducts were characterized by spectral data including 1H NMR, 13C NMR, IR and mass spectra. The configuration of benzylisatin and one of mono-spiro-β-lactams (5a) was established by X-ray crystal analysis.
通过施陶丁格的乙烯酮-亚胺[2 + 2]环加成反应,制备了一些新的单-和双-螺旋-β-内酰胺基苄基丝缎。通过包括1 H NMR,13 C NMR,IR和质谱的光谱数据表征环加合物。通过X射线晶体分析确定了苄基伊萨汀和单螺-β-内酰胺(5a)之一的构型。
Synthesis of New Cyclopentenofullerenes Containing a Norbornene Fragment
作者:I. M. Sakhautdinov、A. F. Mukhametyanova
DOI:10.1134/s1070428019090033
日期:2019.9
ab]Abstract Endic acid imides were synthesized by direct fusion of endic anhydride with various amino acids. Further transformations of the resulting acids gave new 2,3-dienoic acids containing a norbornene fragment. Triphenylphosphine-catalyzed [3+2]-cycloaddition of the latter to fullerene C-60 afforded the corresponding cyclopentenofullerenes.
Features of reactions between (3,5-dioxo-4-azatricyclo-[5.2.1.02-endo,6-endo ]dec-8-en-4-yl)carboxylic acids and p-nitrophenyl azide
作者:I. N. Tarabara、Ya. S. Bondarenko、L. I. Kas’yan
DOI:10.1134/s1070428009020146
日期:2009.2
Reactions were performed of (3,5-dioxo-4-azatricyclo[5.2.1.0(2-endo,6-endo) ]dec-8-en-4-yl)carboxylic acids and their derivatives with p-nitrophenyl azide. A significant fact of the involvement of the carboxy group into the formation of aziridine ring was established and the intermolecular character of this process was confirmed. The structure of compounds synthesized was proved by IR and H-1 NMR spectra.