in analoger Weise wie 1-4 mit Peressigsaure behandelt, bildet sich das entsprechende Disulfid, das von uns bereits friiher a d anderem Wege erhalten wurde [9]. Experimentelles ## 4H-3,1-Benzothiazin-4-thiorbonyl-S-Oxide (5-8): 0,50 g der jeweiligen Ausgangsverbindungen 1-4 wurden unter Erwiirmen
Über die Photochromie der Fulgide. IX Untersuchungen zur Photochemie des α-3,5-Dimethyoxyphenyl-δ-δ-dimethylfulgids
✍ Scribed by Dr. H.-D. Ilge; Dr. H. Langbein; Dr. M. Reichenbächer; Prof. Dr. R. Paetzold
- Publisher
- John Wiley and Sons
- Year
- 1981
- Tongue
- English
- Weight
- 725 KB
- Volume
- 323
- Category
- Article
- ISSN
- 1615-4150
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✦ Synopsis
The Photochromism of Fulgides. IX. Investigations of the Photochemistry of α‐3,5‐Dimethoxyphenyl‐δ,δ‐dimethylfulgide
The mechanism of photoisomerization of α‐3,5‐dimethoxyphenyl‐δ, δ‐dimethylfulgide was investigated by means of u.v./vis‐ and fluorescence spectroscopy. The quantum yields of E‐Z isomerization and cyclisation were determined in various solvents and at different temperatures. Triplet sensitization of E‐Z isomerization by several sensitizers has been found. The thermal dark reactions of the deep coloured species were reinvestigated.
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