Spin selectivity in the oxygenation of singlet phenylhalocarbenes with oxygen
β Scribed by Taiki Makihara; Takayuki Nojima; Katsuya Ishiguro; Yasuhiko Sawaki
- Publisher
- Elsevier Science
- Year
- 2003
- Tongue
- French
- Weight
- 138 KB
- Volume
- 44
- Category
- Article
- ISSN
- 0040-4039
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π SIMILAR VOLUMES
production of 02QAg) in benzene oxygen mixtures has been observed directly and is attributed to quenching of triplet benzene with a rate constant of 5 x lo-l1 cm3 mol-1 set-l. The quenching of singlet b&rzene by oxygen is also discussed.
The reactions of imidamoles with singlet oxygen are of special interest in view of the probable involvement of the imidasole system in the photooxidative inactivation of certain enzymes. Thus, loss of biological activity during photooxidation of phosphoglucomutase3, ribonuclease4 and insulin5, among