A New Method for the Synthesis of 2-Hydroxy-3-nitro-1,4-naphthoquinones: Application to Regiospecific Preparation of Unsymmetrical Nitrobiquinones
作者:Min Yu、Helena C. Malinakova、Kenneth W. Stagliano
DOI:10.1021/jo060825c
日期:2006.8.1
Novel 2-hydroxy-3-nitro-1,4-naphthoquinones were synthesized by an improved method utilizing nitronium tetrafluoroborate in high yields. A subsequent conversion to 2-chloro-3-nitro-1,4-naphthoquinones and a substitution of the chlorine by hydroxyquinone anions yielded 3-nitro-2,2‘-binaphthoquinones with a complete regiocontrol.
利用改进的方法,利用四氟硼酸硝基鎓高产率地合成了新型的2-羟基-3-硝基-1,4-萘醌。随后转化为2-氯-3-硝基-1,4-萘醌并用羟基醌阴离子取代氯,得到具有完全区域控制的3-硝基-2,2'-联萘醌。