| 1 | Author
| H. Parlar, F. Korte | Requires cookie* | | Title
|  | | | Abstract
| Photokinetic experiments show that a series of chlorinated octahydro-1,4-endo, endo-5,8-dimethanonaphthaline (1-4) react intramole-cular and via tripletstate to their photoisomers (1 a-4a). The formation of the compounds 1 a-4a is dependent on oxygen and nature of sensitizers. | | |
Reference
| Z. Naturforsch. 35b, 1488—1490 (1980); eingegangen am 25. April 1980 | | |
Published
| 1980 | | |
Keywords
| Cyclodiene Insecticides, Photoisomerization, Quantum Yields | | |
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| default:Reihe_B/35/ZNB-1980-35b-1488_n.pdf | | | Identifier
| ZNB-1980-35b-1488_n | | | Volume
| 35 | |
3 | Author
| Heinz Falk, Klaus Thirring | Requires cookie* | | Title
| Beiträge zur Chemie der Pyrrolpigmente, XXXIII [1] Darstellung, Struktur und Eigenschaften von isomeren N-Methyl-Bilatrienen-abc (N-Methyl-etiobiliverdine-IV-y) On the Chemistry of Pyrrole Pigments, XXXIII [1] Synthesis, Structure and Properties of Isomeric N-Methyl-bilatrienes-abc (N-Methyl-etiobiliverdines-IV-y)  | | | Abstract
| Methylation of etiobiliverdin-IV-y yields a ring-A N-methylated product the structure of which was proven by comparison with the corresponding monolactimether and the ring-B methylated product which was synthesized on an independent route. The configura-tion (Z,Z,Z) was deduced by iH-NMR experiments and a more or less helical conformation which is most twisted at the ring-A methine fragment was found. Photoisomerization exclusively takes place at this position giving the (E,Z,Z) diastereomer, a reaction which is discussed in terms of the correlation of light absorption, methine single bond twist and photochemical selectivity. | | |
Reference
| Z. Naturforsch. 34b, 1448—1453 (1979); eingegangen am 25. Mai 1979 | | |
Published
| 1979 | | |
Keywords
| UY-VIS, iH-NMR, Photoisomerization, Configuration, Conformation | | |
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| default:Reihe_B/34/ZNB-1979-34b-1448.pdf | | | Identifier
| ZNB-1979-34b-1448 | | | Volume
| 34 | |
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