We describe the synthesis of 6, 11-dihydrobenzo [b] naphtho [2, 3-d] furane-6, 11-diones, 6H- Dibenzo [c, h] chroman-6-ones and 7, 12-dihydro-5H-dibenzo [c, g] chroman-5, 7, 12-triones from 2-(2′-phenyl)-3-hydroxy-1, 4-dihydro-1, 4-naphthalenediones or 2-phenyl-1- naphthols obtained from 2-(2′-bromophenylacetyl)-phenylacetic acids or 1- benzylisoquinolines.