## Abstract Under basic conditions 2,6βbis(bromomethyl)β4βpyrone **8** reacts with tetraethylene glycol to yield the unexpected macrocycle **9**, which is related to the antibiotic Kjellmanianone **10**. We propose that this ring transformation proceeds __via__ the cyclopropyl intermediate **d** (S
β¦ LIBER β¦
The multiplicity of the reactive 2-pyrone excited states.
β Scribed by W.H. Pirkle; L.H. McKendry
- Publisher
- Elsevier Science
- Year
- 1968
- Tongue
- French
- Weight
- 178 KB
- Volume
- 9
- Category
- Article
- ISSN
- 0040-4039
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β¦ Synopsis
The photochemistry of the 2-pyrone system is rich and varied. Corey .(l) has reported that direct irradiation of 2-pyrone (&) affords bicyclo[2.2.O]pyran-2-one (2) while de Mayo (2,3)
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