Irradiation of 1,4-diphenyl-1,bbutadiyne (DPB) with dimethyl fumarate (DMFu) in deaerated tetrahydrofuran yields a primary 1: 1 photoadduct I and further irradiation of the solution results in the formation of novel 1:2 photoadducts, II and Ill as the secondary photoadducts. The photochemistry of co
Photochemistry of conjugated polyacetylenes: photoreaction of 1-phenyl-1,3-pentadiyne with some olefins
β Scribed by Jang Hyuk Kwon; Sang Jin Lee; Sang Chul Shim
- Publisher
- Elsevier Science
- Year
- 1991
- Tongue
- French
- Weight
- 337 KB
- Volume
- 32
- Category
- Article
- ISSN
- 0040-4039
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β¦ Synopsis
Photolyses of l-phenyl-1,3-pentadiyne with various olefins such as 2,3-dimethyl-2-butene, acrylonitrile, and ethyl vinyl ether yield site selective and/or regioselective photoadducts.
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The results described here demonstrate once again the decisive influence of the metal upon the reactivity and selectivity of even so-called polar organometallic or "carbanion" derivatives. Access to both diastereomers of products of type 2 and 3 is not only interesting in itself, but should provide
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