The invention discloses a synthesis method of indenofluorene derivatives, isotruxene and mono-substituted isotruxene derivatives. The synthesis method of indenofluorene derivatives is characterized in that ester-group-containing compounds are formed through Diels-Alder reaction of methyl propiolate and indenocyclopentadienone, ethyl substituted indenofluorene derivatives are formed through hydrolysis, acid catalytic ring closing, carbonyl reduction and introduction of ethyl onto methylene, diketone compounds produced after ring closing react with lithium salt of 4, 4'-di-tert-butyl-2-brominated biphenyl, and then acidification and ring closing are conducted to obtain indenofluorene derivatives with spirofluorene. The synthesis method of isotruxene is characterized in that 1, 4-diphenyl-2, 3-di (carbalkoxy) fluorenone products are formed through the Diels-Alder reaction of indenocyclopentadienone and dimethyl acetylenedicarboxylate, isotruxene ketone is obtained through hydrolysis and acid catalytic ring closing and finally isotruxene is obtained; dibenzyl alcohol products are formed through the Diels-Alder reaction of 1, 4-butynediol and indenocyclopentadienone, and isotruxene is obtained through acetone protection, carbonyl reduction, acetone removal and polyphosphoric acid (PPA) ring closing; and oriented oxy substituted products, i.e. isotruxene ketone which is derived from isotruxene with methylene at a No.5 position being substituted, and corresponding diethyl substituted products are additionally obtained. The indenofluorene derivatives, the isotruxene and the mono-substituted isotruxene derivatives disclosed by the invention can be used in the field of organic electroluminescence and organic micro-molecule solar cells.

杨玲玲

Papers

Synthesis method of indenofluorene derivatives, isotruxene and mono-substituted isotruxene derivatives