作者:John Limanto、Benjamin T. Dorner、Frederick W. Hartner、Lushi Tan
DOI:10.1021/op8001678
日期:2008.11.21
A practical and efficient synthesis of 3-bromo-6-chloro-phenanthrene-9,10-dione was developed and demonstrated on a large scale. The synthetic approach involves six chemical steps and two isolations in 73% overall yield. The key transformations feature an anionic cyclization for generation of the phenanthrene ring, followed by sequential tribromination and hydrolysis for the incorporation of the bromo-diketone functionality.