184176-33-8Relevant articles and documents
Regiospecific synthesis of benzo[b]fluorenones via ring contraction by benzil-benzilic acid rearrangement of benz[a]anthracene-5,6-diones
Patra, Asit,Ghorai, Sujit K.,De, Saroj R.,Mal, Dipakranjan
, p. 2556 - 2562 (2008/02/04)
A regiospecific route to benzo[b]fluorenones is described. The synthesis is based upon a one-pot, regiospecific benzannulation of 1,4-dipolar synthons with naphthoquinone monoketal and ring contraction of the generated benz[a]anthracene-5,6-diones through benzil-benzilic acid rearrangement. Georg Thieme Verlag Stuttgart.