Raster, Peter and Weiss, Stefan and Hilt, Gerhard and Koenig, Burkhard (2011) Synthesis and Photoisomerization of Diarylcyclobutenes. SYNTHESIS-STUTTGART (6). pp. 905-908. ISSN 0039-7881,
Full text not available from this repository. (Request a copy)Abstract
Symmetrically and unsymmetrically substituted diarylcyclobutenes are synthesized in 20-70% yields from alkyne precursors via cobalt-catalyzed [2+2] cycloadditions. The reactions proceed under mild conditions and provide access to differently substituted diarylethene derivatives. All the diarylcyclobutene products undergo reversible photoisomerization upon irradiation with UV/Vis light. The ring-closed isomers show different thermal stabilities towards reisomerization with half-lives ranging from 9 to 300 hours.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | PHOTOCHROMISM; DERIVATIVES; 1,2-DIARYLETHENES; diarylethene; photoswitchable; cyclobutene; photochromic reactions; [2+2] cycloaddition |
| Subjects: | 500 Science > 540 Chemistry & allied sciences |
| Divisions: | Chemistry and Pharmacy > Institut für Organische Chemie > Lehrstuhl Prof. Dr. Burkhard König |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 24 Jun 2020 14:42 |
| Last Modified: | 24 Jun 2020 14:42 |
| URI: | https://pred.uni-regensburg.de/id/eprint/21197 |
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