β″-di-R-substituted fused thiophene (DCXFT4) compounds, and a method for making a compound of the formula (V):
where each R is a C
4
to C
25
hydrocarbylene, the method including di-acylating tetra-bromo dithiophene (I); contacting the bromo-dithiophene compound (II) with a 2-mercaptoacetate to form cyclized fused thiophene (III); converting fused thiophene (III) to the corresponding diacid (IV); and decarboxylating the diacid (IV) to the fused thiophene (V), of the formulas as defined herein.
β″-二取代融合
噻吩(DCXFT4)化合物及其制备方法,制备公式(V)的化合物的方法如下:其中每个R是C4到C25的烃基,该方法包括对四
溴代二
噻吩(I)进行二酰化反应;将
溴代二
噻吩化合物(II)与2-
巯基乙酸酯接触以形成环化的融合
噻吩(III);将融合
噻吩(III)转化为相应的二酸(IV);并将二酸(IV)
脱羧化为融合
噻吩(V),其
化学式如上所定义。