Photochemistry of 3H-furo[3,4-c]pyrazoles and 3H-thieno[3,4-c]pyrazoles |
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| Authors: | Alan D. Payne |
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| Affiliation: | 1. Department of Chemistry, Curtin University, GPO Box U1987, Perth, WA 6945, Australia;2. School of Biomedical, Biomolecular and Chemical Sciences, University of Western Australia, Nedlands, WA 6907, Australia |
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| Abstract: | The first examples of 3H-furo[3,4-c]pyrazoles and 3H-thieno[3,4-c]pyrazoles were prepared in an attempt to isolate examples of cyclopropane-fused thiophenes and furans. Adducts of acetylenic ketones and 2-diazopropane were reacted with 10-camphorsulfonic acid or phosphorus pentasulfide to produce the title compounds. Photolysis of these compounds did not give the cyclopropane-fused products rather an unreported photochemical fragmentation was observed. |
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| Keywords: | 3H-Pyrazoles Photochemistry Cycloproparenes |
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