| |
[摘要]：The oxidative coupling reaction of nitrile-, methyl ester-and amino-functionalized 4-(alkylsulfanyl)-2,2'-bitiophenes with FeCl3 afforded symmetrical octithiophenes (OTs). These new OTs have solvatochromic properties similar to those reported for poly(omega-functionalized alkylsulfanyl) thiophenes and have a potential use in optoelectronic devices. The carboxy-functionalized (obtained through hydrolysis from nitrile and methyl ester functionalized OTs) and the amino-functionalized OTs are also water- soluble as their respective salts. From this and our previous results, the oxidative coupling with FeCl3 can be proposed as a general method for the synthesis of OTs when the starting materials are 4-(alkylsulfanyl)-, 4-(omega-functionalized alkylsulfanyl)-, and 4-alkylsulfanyl- 4'-halo-2,2'-bithiophenes. |
|
