| Autor: |
H. Mohindra Chawla, Manisha Pathak |
| Rok vydání: |
1990 |
| Předmět: |
|
| Zdroj: |
Tetrahedron. 46:1331-1342 |
| ISSN: |
0040-4020 |
| Popis: |
Imidazolin-2-ones( 13 - 18 ) on photooxygenation in the presence of methylene blue yielded the corresponding diacylureas as the only products isolated at room temperature. The rate of photooxygenation followed the order 16 > 17 > 18 > 13 > 14 > 15 . The reaction was also studied at pH 4.4, 6.0 and 9.2 as well as in solvents of varying dielectric constants to explore the nature of the intermediates. It appears that the reaction involves the formation zwitterionic perepoxides leading to dioxetanes which decompose to yield diacylureas. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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