Synthesis and Photochemical Transformations of a few Olefin appended Dibenzobarrelenes

Ambily Mary Jacob, Gisha George


Several olefin appended dibenzobarrelenes and bisdibenzobarrelenes were synthesized by Diels-Alder reaction between 9-alkenylanthracenes and dimethyl acetylenedicarboxylate (DMAD) under carefully controlled conditions. Efficient intramolecular quenching of barrelene triplet was observed in the case of a few of the resultant dibenzobarrlenes.


Diels-Alder reaction, dibenzobarrelenes, dibenzosemibullvqlenes, dibenzocyclootatetraenes, di-π-methane rearrangement.

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