Gaining Control: Direct Suzuki Arylation of Dihydroazulenes and Tuning of Photo- and Thermochromism
作者:Michael Åxman Petersen、Søren Lindbaek Broman、Kristine Kilså、Anders Kadziola、Mogens Brøndsted Nielsen
DOI:10.1002/ejoc.201001554
日期:2011.2
functionalizing the seven-membered ring of the DHA/VHF photochromic system via a Suzuki cross-coupling was developed. Kinetic studies reveal that direct attachment of an aromatic moiety on the seven-membered ring strongly affects the thermal back reaction. By the introduction of an anilino group, pH control of both the photochromic and thermochromic properties was obtained. Furthermore, it was possible to switch
开发了一种通过铃木交叉耦合功能化 DHA/VHF 光致变色系统的七元环的协议。动力学研究表明,在七元环上直接连接芳香族部分会强烈影响热逆反应。通过引入苯胺基,获得了光致变色和热致变色性能的 pH 控制。此外,可以在三种不同状态之间切换:两种光致变色和一种热致变色。