Download full text in PDF Opens in a new window. Article suggestions will be shown in a dialog on return to ScienceDirect. ... Please enable JavaScript to use all the features on this page. ... Here we account the transformation of 2-[(2′-bromophenyl)acetyl]phenylacetic acids and 1-benzylisoquinolines into benzo[b]naphtho[2,3-d]furan-6,11-diones. Synthesis of benzo[b]naphtho[2,1-d]furans from 1-benzylisoquinolines is also described.