Gabbutt, Christopher D., Heron, B. Mark, Thomas, David A, Light, Mark E and Hursthouse, Michael B (2004) Carbenoid induced irreversible ring opening of naphthopyrans. Tetrahedron Letters, 45 (32). pp. 6151-6154. ISSN 0040-4039
Metadata only available from this repository.Abstract
Contrary to expectation rhodium carbenoids do not undergo cycloaddition to the 2H-pyran unit of the isomeric naphthopyrans 3 and 5. With 3, a naphtho[2,1-b]pyran-8-ylacetate, 4 is formed and a novel merocyanine dye 6 results from a cycloaddition across the C-5–C-6 double bond of the naphtho[1,2-b]pyran 5. Tethering the carbenoid to the naphtho[1,2-b]pyran system 5, as in 10, results in a similar mode of addition and affords the intensely coloured tetracycle 11.
Item Type: | Article |
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Subjects: | Q Science > Q Science (General) Q Science > QD Chemistry |
Schools: | School of Applied Sciences |
Related URLs: | |
Depositing User: | Sharon Beastall |
Date Deposited: | 25 Sep 2012 11:26 |
Last Modified: | 28 Aug 2021 11:21 |
URI: | http://eprints.hud.ac.uk/id/eprint/15067 |
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