Synthesis of 2,3-Disubstituted-1,4-naphthoquinone by Michael Addition of 4-Hydroxycoumarins to 1,4-Naphthoquinone
ZHANG, Sheng-Ling*,a ; HUANG, Zhi-Shub ; GU, Lian-Quanb
Chin. J. Org. Chem. . 2008, (08): 1467 -1470 .