9-hydroxy-3,3-dimethyl-3H-naphtho[2,1-b]pyran-7,10-dione 、
2,3-dichloro-6-n-propyloxy-1,4-naphthoquinone 在
N,N-二异丙基乙胺 作用下,
以
乙二醇二甲醚 为溶剂,
反应 8.0h,
以18%的产率得到9-hydroxy-8-(3'-(9'-hydroxy-3',3'-dimethyl-7',10'-dioxo-7',10'-dihydro-3'H-naphtho[2,1-b]pyran-8'-yl)-1',4'-dioxo-6'-n-propoxy-1',4'-dihydronaphthalen-2'-yl)-3,3-dimethyl-3H-naphtho[2,1-b]pyran-7,10-dione