Convenient Synthesis of a Tetrathienyl Dendritic Core
摘要:
Toward the goal of hole-conducting materials, we present the synthesis of a tetrabrominated-tetrathienyl derivative for use as a four-branch core in dendrimer synthesis. Commercially available 2-thienyllithium was reacted with methyl formate to give 2,2'-dithienyl-methanol and upon acidic workup results in 2,2',2'',2'''-oxybis(methanetriyl)tetrathiophene. The tetrathienyl product underwent regioselective tetrabromination with N-bromosuccinimide at the thienyl-5-positions in 68% overall isolated yield.
DOI:
10.1080/00397910802267196
作为产物:
描述:
二噻吩-2-基甲醇 以
neat (no solvent) 为溶剂,
反应 2.0h,
以89.4%的产率得到2,2',2'',2'''-oxybis(methanetriyl)tetrathiophene
参考文献:
名称:
Krishnaswamy, N. R.; Kumar, Ch. Siva Sai Kamana; Prasanna, S., Journal of Chemical Research, Miniprint, 1991, # 7, p. 1801 - 1830