manganese triacetate 、
1-methoxy-2-(6-methyl-4-oxo-5,6-dihydro-4H-pyran-2-yl)-anthraquinone 在
溶剂黄146 作用下,
以
苯 为溶剂,
反应 18.0h,
以64%的产率得到acetic acid trans-6-(1-methoxy-9,10-dioxo-9,10-dihydro-anthracen-2-yl)-2-methyl-4-oxo-3,4-dihydro-2H-pyran-3-yl-ester