Laser flash photolysis of 3-(4-biphenylyl)-2H-azirine (AZ) has been investigated in cyclohexane. Two kinds of transient species; that is, a triplet state (T1) of AZ and a nitrile ylide (NY) were detected. Both transient species have λmax at 410 nm and the decay max rates were 6.7 × 105 s−1 (T1) and 8 × 10 s−1 (NY), respectively. Reaction rate constants of NY with propanone and acrylonitrile were also determined.
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Naito et al. (1989) studied this question.
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