Regiospecific Synthesis of Benzo[<i>b</i>]fluorenones via Ring Contraction by Benzil-Benzilic Acid Rearrangement of Benz[<i>a</i>]anthracene-5,6-diones
作者:Dipakranjan Mal、Asit Patra、Sujit Ghorai、Saroj De
DOI:10.1055/s-2006-942468
日期:2006.8
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.
描述了苯并[b]芴酮的区域特异性路线。该合成基于 1,4-偶极合成子与萘醌单缩酮的单锅区域特异性苯环化,以及通过苯偶酰-苯甲酸重排生成的苯并[a]蒽-5,6-二酮的环收缩。