Liste
Précédente Suivante
Publication 43
- “Sym-benzvaleno-benzo-benzvalene, a double valence isomer of anthracene”
Gandillon, G.; Bianco, B.; Burger, U.
Tetrahedron Lett. 1981, 22, 51-54.
Dilithio-s-indacene (1) on reaction with excess chlorocarbene produces s-benzvaleno-benzo-benzvalene (3). Unlike benzvalene, it does not aromatize on heating but decomposes stepwise to 1,5- and 1,7-bis-methylene-dihydro-indacene (6 and 7).