Synthesis and Photochromic Behavior of 1,2-bis(1,3-dimethylindol-2-yl)cycloalkenes
作者:
Guilan Pan,
Ping Fan,
Yangfu Ming,
Meigong Fan,
期刊:
Molecular Crystals and Liquid Crystals Science and Technology. Section A. Molecular Crystals and Liquid Crystals
(Taylor Available online 2000)
卷期:
Volume 345,
issue 1
页码: 27-32
ISSN:1058-725X
年代: 2000
DOI:10.1080/10587250008023890
出版商: Taylor & Francis Group
关键词: synthesis;cycloalkene;photochromic;stability
数据来源: Taylor
摘要:
Two novel 1,2-bis(1,3-dimethylindol-2-yl)cycloalkenes(2) were designed and synthesized by intramolecular coupling reaction using low-valance titanium as catalyst. Photochromic properties of these compounds were initially investigated. The results show that the thermal stability of colored form of2is much better than that of 1,2-bis(1-ethyl-2-methylindol-3-yl)cycloalkenes(4), and the absorption maximum of them is shorter than that of 1,2-bis(1-ethyl-2-methylindol-3-yl)cycloalkenes.
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