Thermal and photochemical decomposition of 3,4-dimethyl-3,4-di-butyl-1,2-dioxetane. Competitive generation of singlet and triplet 2-hexanone
โ Scribed by Darling, Thomas R.; Foote, Christopher S.
- Book ID
- 126862157
- Publisher
- American Chemical Society
- Year
- 1974
- Tongue
- English
- Weight
- 392 KB
- Volume
- 96
- Category
- Article
- ISSN
- 0002-7863
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Singlet oxygenation of 4-tert-butyl-5-(3-tert-butyldimethylsiloxy)phenyl-3,3-dimethyl-2-phenyl-2,3-dihydrofuran (3a) in dichloromethane at 0ยฐC gave a 95:5 mixture of stereoisomeric dioxetanes (anti-1a) and (syn-1a). The isomer (anti-1a) was more stable thermally than syn-1a. On treatment with tetrab
The results of SCF MO c~cu~atio~ on excited S-S and T-T tra~i~o~ are compared with ex'peri- meats for l,2 :3,4\_dibemanthracene, l,l2-banzperylone and 3.Gbenzcoronene. The ngreement is rensannbla for the triplet but lees satisfactory for the sing!et trunsitious. The conditiana under which simflnrit