Structurally Versatile Novel Photochromic Bisarylindenone and Its Acetal: Achievement of Large Cyclization Quantum Yield
Structurally Versatile Novel Photochromic Bisarylindenone and Its Acetal: Achievement of Large Cyclization Quantum Yield
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DOI：
10.1021/ol901497t
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发表时间：
2009-09-03
期刊：
影响因子：
5.2
通讯作者：
Yokoyama, Yasushi
中科院分区：
文献类型：
--
作者：
Morinaka, Kaori;Ubukata, Takashi;Yokoyama, Yasushi
摘要合成了具有6 -电环和3个易修饰官能团的新型热不可逆光致变色化合物双芳烯酮及其缩醛衍生物。2,3-二（5-甲基-2-苯基-4-噻唑基）茚酮在两种不同的可见光下表现出光致变色反应。其乙烯缩醛在己烷中的光环化量子产率为0.81，这是迄今为止已知的6 pi电环化溶液的最大值。
Bisarylindenones and an acetal derivative, a novel thermally Irreversible photochromic family based on 6 pi-electrocyclization with three easily modifiable functional groups, have been synthesized. 2,3-Bis(5-methyl-2-phenyl-4-thiazolyl)indenone showed photochromic back-and-forth reactions with two different visible lights. Its ethylene acetal recorded 0.81 as the photocyclization quantum yield in hexane, which is the largest value known to date for 6 pi-electrocyclization In solution.