The total synthesis of rac-heliophenanthrone (3a) was achieved by a convergent approach, making use of a transition-metal-catalyzed domino process with an intramolecular Diels-Alder reaction at an isobenzopyrylium cation as key step.
Dyker, Gerald,Hildebrandt, Dirk
p. 6093 - 6096
(2007/10/03)
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