Novel intramolecular photocyclization of tris(2-benzo[b]thienyl)methyl alcohol

Add time:09/05/2019    Source:sciencedirect.com

Photoirradiation of tris(2-benzo[b]thienyl)methyl alcohol in acetonitrile afforded a cyclopentanone compound and a benzo[b]thiophene-condensed tropone derivative. The former is interpreted to originate via the di-π-methane rearrangement using the unsaturated bonds in two thiophene rings, while the latter via trimerization of the unsaturated bonds in three thiophene rings.

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