Tetrahedron Letters p. 3155 - 3156 (1990)
Update date:2022-07-29
Topics:
Burger, Ulrich
Thorel, Pierre-Jean
Schaller, Jean-Pierre
A novel and very short synthesis of the useful title hydrocarbon 2 is presented.Its key step is based on a Diels-Alder reaction of isobenzofuran 4.The lithium salt of 2 gives a remarkably stable valence isomer of anthracene 1 in a reaction analogous to the indene -> benzobenzvalene transformation.
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(1968)
