The cyclization of substituted diaryl(hetaryl)alkynes with in-situ-prepared SeBr4 has been achieved. The use of an alkene additive as a bromine scavenger gives simple access to functionalized benzo[b]selenophene and selenophenothiophene derivatives from commercially available or easily accessible starting materials. The reactions can be performed in air without the use of moisture-sensitive reagents
Conjugated polymers and processes for preparing and modifying them
申请人:JAPAN SYNTHETIC RUBBER CO., LTD.
公开号:EP0059646A2
公开(公告)日:1982-09-08
A conjugated polymer having a recurring unit of formula (I) or (II):
(in which Ar and Ar' are the same or different and each represents a heteroaromatic ring) has good heat stability and mouldability. The polymer having a recurring unit of formula (I) may be modified by reaction with an amine or with hydrogen sulphide and both may be modified by doping with an electron-donative compound or an electron-attractive compound, to prepare organic semiconductors or organic conductors having various electrical conductivities.
具有式 (I) 或 (II) 循环单元的共轭聚合物:
(其中 Ar 和 Ar'相同或不同,各自代表一个杂芳香族环)的共轭聚合物具有良好的热稳定性和成型性。具有式(I)循环单元的聚合物可以通过与胺或硫化氢反应进行改性,也可以通过掺杂电子疏导化合物或电子吸引化合物进行改性,以制备具有不同导电率的有机半导体或有机导体。