Photoisomerization of 1,2-diarylethylenes: Photophysical properties of 5(E)-styryl-1,3-dimethyluracil
β Scribed by Sang Chul Shim; Eun Ju Shin; Ho Kwon Kang; Seung Ki Park
- Publisher
- Elsevier Science
- Year
- 1987
- Weight
- 868 KB
- Volume
- 36
- Category
- Article
- ISSN
- 0047-2670
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π SIMILAR VOLUMES
## Abstract The title compound **1** is shown to give, both upon direct irradiation at 254 nm and upon acetophenoneβsensitized photolysis at 300 nm, the __syn__βvinylβpentamethylhousene **5**, which spontaneously rearranges in a [3,3]0sigmatropic process to give the bicyclo[3.2.0]heptadiene skeleto
The reaction of dibenzylideneacetones or E,E-cinnamylidene-acetophenones and hydrazine hydrate provided 1-propionyl derivatives of 5-aryl-3-styryl-2-pyrazolines and 3-aryl-5-styryl-2-pyrazolines. These unsaturated ketones afforded 1-(2-carboxyphenyl) or 1-(4-carboxyphenyl) 5-aryl-3-styryl-2-pyrazoli
UDC 547.892.07:543. 422.25'51 4-Styryl-2,3-dihydro-iH-l,5-benzodiazepin-2-ones were synthesized and their structure was established by means of PMR spectra and mass spectroscopy. There is no unequivocal information on the structure of the reaction products of 4methyl-2,3-dihydro-iH-l,5-benzodiazepi