Yazar "Lappert, MF" seçeneğine göre listele

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    Reactions of electron-rich olefins with proton-active compounds
    (Marcel Dekker Inc, 1997) Kucukbay, H; Cetinkaya, E; Cetinkaya, B; Lappert, MF
    From the reaction of electron-rich olefins, bis(1,3-dimethylbenzimidazolidine-2-ylidene), I, or bis(3-methylbenzothiazolidine-2-ylidene), LI with proton active compounds, such as dimethyl phosphite, diethyl phosphite, acetonitrile and benzaldehyde were obtained 2-substituted benzimidazole or benzothiazole derivatives. The compounds synthesized were identified by H-1, C-13, P-31-NMR, mass, FT-LR spectroscopic techniques and micro analysis.
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    Öğe
    Synthesis and characterisation of N-functionalized enetetramines, and their properties
    (Slovensko Kemijsko Drustvo, 2004) Gök, Y; Çetinkaya, E; Özdemir, I; Çetinkaya, B; Lappert, MF
    Two general routes are described for the synthesis of the title compounds from the reaction of, either the dimethyl acetal of N,N'-dimethylformamide and an appropriate N, N'bis(secondary amine), or sodium hydride (or potassium tert-butoxide) and 4,5-dihydroimidazolium salts. N-Functionalized enetetramines (3, 8) having 2-methoxyethyl or allyl substituent on the N-atom have been made. The reaction of this enetetramines with S-8 and Se, gave the corresponding cyclic chalcogeno ureas derivatives (4, 5). Treatment of potassium tert-butoxide with 1,1'-ethylene-3,3'-diallyldiimidazolidinium dibromide (7) afforded, either the enetetramine ( 8), or, alternatively, the amino-Claisen isomer (9). All new compounds were identified by H-1, C-13 NMR, FT-IR and micro analysis.