Aromatic Chlorination with Thionyl Chloride. Applications in the Synthesis of Chlorinated Isoflavones
作者:Otto Soidinsalo、Kristiina Wähälä
DOI:10.1080/10426500701509485
日期:2007.10.18
Genistein ( 1 ) undergoes selective chlorination on treatment with thionylchloride to give first 8-chlorogenistein ( 10 ) and then 6,8-dichlorogenistein ( 8 ). Biochanin A ( 18 ) gives the 6,8-dichloro derivative 19 . A mechanism is suggested for the unexpected aromatic chlorinations.