Abstract
The di-π-methane rearrangement was shown to be a general photochemical process that occurs from excited states of molecules having two π-moieties bonded to a single atom-most generally carbon.1 This mechanism is shown as outlined in Equation 1. In most cases the photochemical reaction proceeds from the excited singlet state in acyclic systems and from the excited triplet state in bicyclic systems.
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Balci, M. (1999). Di-π-Methane Photorearrangement of 2,3-Disubstituted Benzobarrelenes and Benzonorbornadienes: Effect of Substituents of Opposite Polarity on the Regioselectivity and Synthesis of Benzopinane Skeleton. In: Scolastico, C., Nicotra, F. (eds) Current Trends in Organic Synthesis. Springer, Boston, MA. https://doi.org/10.1007/978-1-4615-4801-0_16
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DOI: https://doi.org/10.1007/978-1-4615-4801-0_16
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