Browsing by Subject "chemie nucleophiler carbene"

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A Base Induced Transformation Of A 1,3-Dimethyl-1,3-Di-(1-Adamantyl)Formamidinium Salt Into Beta- Methyl-(1-Adamantyl)Amino Acrylonitriles In Aliphatic Nitriles
(2012) Knishevitsky, Arthur V.; Korotkikh, Nikolai I.; Cowley, Alan H.; Moore, Jennifer A.; Vasudevan, Kalyan V.; Pekhtereva, Tatyana M.; Shvaika, Oles P.; Cowley, Alan H.; Moore, Jennifer A.; Vasudevan, Kalyan V.
A novel 1,3-dimethyl-1,3-di-(1-adamantyl)formamidinium perchlorate has been prepared via the Vilsmeier-Haack reaction of N-methyl-N-(1-adamantyl)formamide and N-methyl-N-(1-adamantyl) amine in a mixture of phosphorus oxychloride and benzene. The new formamidinium salt was found to undergo addition-elimination reactions when treated with sodium hydride in acetonitrile or propionitrile solution, thereby forming the corresponding beta-[methyl(1-adamantyl)amino]acrylonitriles and N-methyl-N-(1-adamantyl) amine. The H-1 and C-13 NMR spectra and the single-crystal X-ray structure of the new formamidinium salt have been determined along with those of the related compound 1,3-di-(1-adamantyl)-1-cyanoamidine and the corresponding beta-(dialkylamino)acrylonitriles.
Review: Stable Heteroaromatic Carbenes Of The Benzimidazole And 1,2,4-Triazole Series
(2005) Korotkikh, Nikolai I.; Shvaika, Oles P.; Rayenko, Gennady F.; Kiselyov, Artyom V.; Knishevitsky, Arthur V.; Cowley, Alan H.; Jones, Jamie N.; Macdonald, Charles L. B.; Cowley, Alan H.; Jones, Jamie N.; Macdonald, Charles L. B.
The review is focused on new data concerning the syntheses and selected properties of stable heteroaromatic monocarbenes of the benzimidazole and 1,2,4-triazole series, biscarbenes, anionocarbenes of the 1,2,4-triazole series, and cryptocarbenes. The syntheses of the precursors to these compounds are also described. Special attention is paid to C-H insertion reactions, X-ray structural data and spectral characteristics of the carbenes and their analogues.