为了开发基于噻吩并吡咯(DTP)单元的新元素嵌段,通过布赫瓦尔德-哈特温(Buchwald-Hartwing)胺化方法合成了双(苯并呋喃基)吡咯和杂噻吩并吡咯衍生物。利用光吸收,循环伏安法(CV),单晶X射线衍射分析和有机薄膜晶体管(OTFT)来研究所得吡咯衍生物的结构-活性关系。结果发现,引入苯并呋喃单元的增强了平面性和杂并导致强的分子聚集和更致密的π-π堆积的缀合,导致与0.025厘米空穴迁移率更好的电荷传输性2 V -1小号-1为OTFT。
MPHT-Promoted Bromocyclization of ortho-Substituted Arylalkynes: Application to the Synthesis of 2-Substituted 3-Bromobenzofurans and -Benzo[b]thiophenes
A convenient and general approach to the synthesis of 2‐substituted 3‐bromobenzofurans and ‐benzothiophenes was developed. The procedure is based on the cyclization of ortho‐substituted arylalkynes in the presence of N‐methylpyrrolidin‐2‐one hydrotribromide (MPHT) as a soft and easy‐to‐handle electrophilic brominating reagent. Under mild reaction conditions, MPHT promoted the bromocyclization of various
thienopyrroles (DTP) units, bis(benzofurano)pyrrole and hybrid thienopyrrole derivatives were synthesized by Buchwald-Hartwing amination methods. Optical absorption, cyclic voltammetry (CV), single-crystal X-ray diffraction analyses and organic thin-film transistor (OTFT) were employed to investigate the structure-activity relationships of the resulting pyrrolederivatives. It was found that the introduction
为了开发基于噻吩并吡咯(DTP)单元的新元素嵌段,通过布赫瓦尔德-哈特温(Buchwald-Hartwing)胺化方法合成了双(苯并呋喃基)吡咯和杂噻吩并吡咯衍生物。利用光吸收,循环伏安法(CV),单晶X射线衍射分析和有机薄膜晶体管(OTFT)来研究所得吡咯衍生物的结构-活性关系。结果发现,引入苯并呋喃单元的增强了平面性和杂并导致强的分子聚集和更致密的π-π堆积的缀合,导致与0.025厘米空穴迁移率更好的电荷传输性2 V -1小号-1为OTFT。