✦ LIBER ✦
Photocyclization of a Bichromophoric Phenol/Olefin System Substituted at the Methylene Spacer − Zwitterions versus H-Bridged Intermediates in the Excited State Proton Transfer
✍ Scribed by M. Consuelo Jiménez; Miguel A. Miranda; Rosa Tormos; Salvador Gil
- Publisher
- John Wiley and Sons
- Year
- 2002
- Tongue
- English
- Weight
- 228 KB
- Volume
- 2002
- Category
- Article
- ISSN
- 1434-193X
No coin nor oath required. For personal study only.
✦ Synopsis
Photolysis of (E)-and (Z)-2-(1-ethyl-3-phenylpropenyl)phenol (1 and 2) under a variety of conditions produces a mixture of dihydrobenzopyrans 3 and 4, dihydrobenzofuran 5, cyclopropanes 6 and 7, and rearranged olefin 8. Acidic treatment of 1 and 2 gives a mixture of the six-membered ring products 3 and 4. Remarkable differences, associated