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http://hdl.handle.net/123456789/3116| Title: | One-shot photochemical synthesis of 5-(thiophen-3-yl)pyrano[2,3-c]chromen-2(3H)-ones from 3-propynyloxy-chromenones: a case of an intramolecular Paterno–Buchi reaction |
| Authors: | Khullar, S. Mandal, S.K. |
| Keywords: | Photochemical Propynyloxy-chromenones Photobiological |
| Issue Date: | 2014 |
| Publisher: | Royal Society of Chemistry |
| Citation: | Photochemical and Photobiological Sciences, 13(3), pp.488-491. |
| Abstract: | 5-(Thiophen-3-yl)pyrano[2,3-c]chromen-2(3H)-ones (2), angular tricyclic compounds, were synthesized in significantly high yields through the photoinduced intramolecular coupling of the acetylenic group with the carbonyl centre in 3-(prop-2-ynyloxy)-2-(thiophen-3-yl)-4H-chromen-4-ones (1). This photoreaction is a case of an intramolecular Paterno–Buchi reaction and is unprecedented in 3-propynyloxy-chromenones. The structure of 2 has been determined by spectroscopic (FTIR, NMR and mass) and single crystal X-ray crystallographic studies. |
| Description: | Only IISERM authors are available in the record. |
| URI: | https://pubs.rsc.org/en/content/articlelanding/2014/PP/c3pp50396h#!divAbstract http://hdl.handle.net/123456789/3116 |
| Appears in Collections: | Research Articles |
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