Dimerized Cyclopentadienones from Esters of Allethrolone
โ Scribed by LaForge, F. B.; Green, Nathan; Schechter, Milton S.
- Book ID
- 127009375
- Publisher
- American Chemical Society
- Year
- 1952
- Tongue
- English
- Weight
- 421 KB
- Volume
- 74
- Category
- Article
- ISSN
- 0002-7863
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๐ SIMILAR VOLUMES
The photochemistry of several cyclopentadienone dimers, & has been reported recently. The excited singlet states of &and l&undergo cl,31 sigmatropic shifts to form & and 2&, while the triplet state of & forms the [2+21 cage isomer 3a.1'2 Recently, Fuchs reported a; R= R/= H b; R=H; R/= Ph c; R= Me;
## Abstract In continuation of previous work on cyclopentadienone dimers [3], thermal and photochemical interconversions of the isomeric diketones **1, 3**, and **5** by skeletal rearrangements have been established to the extent summarized in schemes 2 and 3, and the intramolecular [2+2] cycloaddi