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Showing 1 to 7 of 7 for “"nitrenes"”.
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Structure and Reactivity of Aryl Carbenes and Aryl Nitrenes: Experimental and Computational Approaches
Part one. Three isomeric aryl carbenes, 1,8-diaza-9-fluorenylidene (18DFL), 3,6-diaza-9-fluorenylidene (36DFL), and 4,5-diaza-9-fluorenylidene (45DFL) were generated by photolyses of their corresponding diazo compounds. The physical and chemical behaviors of the diazo compounds and carbenes were …
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The Photochemistry of 3- and 4-Nitro Phenyl Azides
… or in a frozen glass at 77 K gives triplet nitrenes. The products of the reaction of triplet nitrenes depend on the power of the light source. Triplet 4-nitrophenyl nitrene dimerizes to form azobenzene at a diffusion controlled rate and reacts with the tertiary amine by single-electron …
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The Photochemistry of Beta-Naphthoyl Azide and 4-Acetylphenoxycarbonyl Azide: The Chemical and Physical Properties of Acylnitrenes
… the chemical and physical properties of two acylnitrenes, 4-acetylphenoxycarbonylnitrene (APN) and $\beta$-naphthoylnitrene (BNN) generated by the photolysis of 4-acetylphenoxycarbonyl azide and $\beta$-naphthoyl azide (BNA) respectively. These nitrenes were investigated using low-temperature …
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Part One: Photochemistry of Aryl Azides. Chemical Properties of the Transient Intermediates. Part Two: Thermolysis of an Endoperoxide. Generation of an O-Xylylene Peroxide (Nitrene)
… Direct irradiation gives the triplet aryl nitrenes, with relatively long-lived singlet-state precursors. The structures of these intermediates and their rates of reaction with secondary amines are discussed.
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Development of base metal-catalyzed C—H functionalization reactions
… of C—H bonds to C—N and C—C bonds via metallonitrenes and metallocarbenes is not known in nature. The majority of synthetic, small molecule catalysts thus far developed for these C—H functionalization processes have been comprised of precious or noble metals like palladium, rhodium, ruthenium, …
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Explore the Formation of Triplet Nitrene - A Potential Intermediate for Building Organic Magnets
… to use crystal lattices to render triplet vinylnitrenes stable and use their high spin property to make stable organic magnetic materials.</p><p> We investigated the photoreactivity of alkyl azides 5-azido-1-(4-methoxyphenyl)pentan-1-one and 6-azido-1-(4-methoxyphenyl)hexan-1-one. We used …
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Entwicklung neuer Methoden zur Eisen-katalysierten Kohlenstoff-Heteroatom-Bindungsknüpfung
In this thesis, new methods for iron-catalyzed bond forming reactions between carbon and heteroatoms were developed. The first part of the thesis was dedicated to the aziridination reaction of olefins by nitrene group transfer. Commercial Fe(acac)3 served as the iron source. The nitrene was formed …