| | 1 | Author
| Jürgen Keim | Requires cookie* | | | Title
| Ein Beitrag zur Photochemie aromatischer Nitroverbindungen, III* A Contribution to the Photochemistry of Aromatic Nitro Compounds  | | | | Abstract
| During UV irradiation of nitrobenzene and some derivatives in benzene solution biphenyls are formed as in the case of the corresponding iodobenzenes. Using fluorobenzene as a solvent, isomeric fluorobiphenyls (o, TO, p) will be found as reaction products having a definite distribution (o >m > p), which is characteristic for substitution by radicals. Therefore, we conclude that the CN-bond is split homolytically. Besides the biphenyls, other important reaction products of the aromatic nitro compounds -phenols and nitro-phenols -are identified. | | | |
Reference
| Z. Naturforsch. 34b, 995—998 (1979); eingegangen am 28. Februar 1979 | | | |
Published
| 1979 | | | |
Keywords
| Photochemistry, Aromatic Nitro Compounds, UV | | | |
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| default:Reihe_B/34/ZNB-1979-34b-0995.pdf | | | | Identifier
| ZNB-1979-34b-0995 | | | | Volume
| 34 | |
| 2 | Author
| Richard Ratka, ManfredL. Ziegler, Gerhard Schilling | Requires cookie* | | | Title
| Darstellung und Charakterisierung von chiralen und achiralen exocyclischen 7r-enyl-Komplexen der Zusammensetzung (C8H13PdCl)2 Synthesis and Characterization of Exocyclic jr-Enyl Complexes of the Composition (C8Hi3PdCl)2 | | | | Abstract
| The mechanism of formation of the exocyclic dimeric jr-enyl complex (C8Hi3PdCl)2 by reaction of 1,3-dimethylenecyclohexane, C8HI2 with irans-PdCl2(C6H5CN)2 is discussed. Through UV, X H NMR (90 MHz, 360 MHz) and 13 C spectroscopic studies it was possible to show that the dimer is formed by the disproportionate of C8Hi2 to C8Hi4 and m-xylene, and further that it consists of diastereomeric products. The reaction of (—) R-3-methyl-1-methylencyclohexane, C8Hi4, with the Pd-salt confirms that during the reaction between C8Hi2 and <mns-PdCl2(C6H5CN)2 no free C8H14 is formed in solution. Studies on cleavage reactions of the dimer are also described in this paper. | | | |
Reference
| Z. Naturforsch. 34b, 579—584 (1979); eingegangen am 23. November 1978 | | | |
Published
| 1979 | | | |
Keywords
| ji-Enyl Complexes, UV, m NMR | | | |
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| default:Reihe_B/34/ZNB-1979-34b-0579.pdf | | | | Identifier
| ZNB-1979-34b-0579 | | | | Volume
| 34 | |
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