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Synthesis and Photochromic Properties of Thiophene Linked [2H]-Chromenes

 

作者: M. Frigoli,   C. Moustrou,   A. Samat,   R. Guglielmetti,   R. Dubest,   J. Aubard,  

 

期刊: Molecular Crystals and Liquid Crystals Science and Technology. Section A. Molecular Crystals and Liquid Crystals  （Taylor Available online 2000）
卷期: Volume 344, issue 1  

页码: 139-144

 

ISSN:1058-725X

 

年代: 2000

 

DOI:10.1080/10587250008023827

 

出版商: Taylor & Francis Group

 

关键词: Chromenes;Photochromism;Spectrokinetics;Coupling reactions;Thiophene

 

数据来源: Taylor

 

摘要:

Successive coupling reactions (catalysed by Cu(I)/Pd(II) systems) between 8-bromo-3,3-diphenyl-[3H]naphtho[2,1-b]pyran, 2-methylbut-3-yn-2-ol and appropriate thiophene- or bithiophene halides afforded mono- or bichromophoric chromenes bearing a thienylethynyl or a bithienylethynyl group. Spectrokinetic study using flash photolysis conditions showed interesting photochromic properties regarding, especially, the “colorability” of the new compounds.

 

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