影像科学与光化学 ›› 1999, Vol. 17 ›› Issue (2): 97-99.DOI: 10.7517/j.issn.1674-0475.1999.02.97

• 研究快讯 •    下一篇

苯乙烯噻吩之光敏化亲核性加成反应(英文)

何郡轩, 何东英   

  1. 台湾大学化学系, 台北106
  • 收稿日期:1998-12-07 出版日期:1999-05-20 发布日期:1999-05-20

REVERSE REGIOSELECTIVE PHOTOCHEMICAL AMINE ADDITION TO THE STYRYLTHIOPHENES

HE Jun-xuan(JinnHsuan HO), HE Dong-ying(TongIng HO)   

  1. Department of Chemistry, National Taiwan University, Taipei
  • Received:1998-12-07 Online:1999-05-20 Published:1999-05-20

摘要: 苯乙烯噻吩经1,4二氰苯之光敏化作用所产生之阳离子自由基与氨进行高产率且具位置选择性之加成反应,可得单一产物1-胺基-1-(对-取代基苯基)-2-噻吩-2-基乙烷.

关键词: 光敏化, 电子转移, 亲核性加成, 位置选择性

Abstract: Regioselectivity in photochemical reaction system is a topic of current interest[1].The regioselective photochemical amination reactions are useful tool to the synthesis of isoquinolines[2] and aporphines[3].The photoinduced electron transfer sensitized by electron deficient 1,4-dicyanobenzene(DCB) can produce cation radicals which has been identified by transient absorption study[4].In continuation to our interests in the selective reactions of the photoinduced cation radicals,a series of 2-styrythiophenes 1~5 are synthesized to study the photoamination reaction.

Key words: photosensitization, electron transfer, nucleophilic addition, regioselectivity