The reaction of singlet oxygen with a simple thiophene
β Scribed by C.N. Skold; R.H. Schlessinger
- Publisher
- Elsevier Science
- Year
- 1970
- Tongue
- French
- Weight
- 174 KB
- Volume
- 11
- Category
- Article
- ISSN
- 0040-4039
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β¦ Synopsis
Current interest in the reactions of singlet oxygen with heterocyclic systems prompts us to describe some of our own efforts in this area.' The marked reactivity of singlet oxygen with cis-dienes is well documented,' and this behavior suggested that it might be possible to obtain a reaction between singlet oxygen and simple thiophenes.
This supposition has proven correct for we have found that photogenerated singlet oxygen undergoes an interesting and facile reaction with 2,5_dimethylthiophene (1j.s Irradiation (4 hrs) of chloroform solutions of l(O.013 M) with 520 nm light absorbed only
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Phosphorus ylids find great utility in synthesis where the best known reactions such as the Wittig and variants thereof are used for the construction of carbon-carbon bonds.' We now report a new, sinple reaction of ~tho~carbonylalkylidenephosphoranes with singlet oxygen to
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