TETRAHEDRON, vol.57, no.48, pp.9759-9763, 2001 (SCI-Expanded)
1,1,3,3-Tetrabromoindane and 1,1,2,3,3-pentabromoindane were efficiently synthesized by photolytic bromination of indane. Subsequent dehydrobromination of them gave the corresponding tribromo- and tetrabromoindenes, which were easily converted to the corresponding bromoindenones by silver-supported hydrolysis. Thermolysis of 3-bromoindenone gave the benzo[c]fluorenone derivative. (C) 2001 Elsevier Science Ltd. All rights reserved.