Wavelength-Dependent Reactivity of a Quinolinone: Toward a Photochromic Three-State System

详细信息    查看全文

• 作者：Jé ; rô ; me Berthet ; Jean-Claude Micheau ; Vladimir Lokshin ; Magali Vales ; Gaston Vermeersch ; Sté ; phanie Delbaere
• 刊名：Organic Letters
• 出版年：2008
• 出版时间：9/4/08
• 年：2008
• 卷：10
• 期：17
• 页码：3773-3776
• 全文大小：193K
• 年卷期：v.10,no.17(9/4/08)
• ISSN：1523-7052

文摘

The photochemical reactivity of the quinolinone 3 was investigated using NMR by monitoring its reactions under appropriate irradiation wavelengths. Besides the irreversible formation of degradation products which were structurally identified, the reversible formation of the enol 4 and cyclobutenol 5 was also observed. The enol and cyclobutenol can be switched or reversed back to the quinolinone 3, resulting in a photochromic three-state system in which the relative ratio of the three components largely depends on the irradiation wavelength used.