Photoconversion of o-hydroxycinnamates to coumarins and its application to fluorescence imaging
摘要:
(E)-o-水煤气产物通过合成并研究了它们的光化学行为在液态和固态中。通过¹H核磁共振光谱分析法(H-1 NMR spectroscopy)确认,(E)-o-水煤气产物通过(Z)-o-水煤气中间体转化为相应的对调quaresin。在p-toluenesulfonic acid的存在下,光转变被大大加速。比较了与对应对调quaresin的光学性质。通过光照射聚甲基丙烯酸甲酯薄膜中的甲酰苯,成功实现了荧光成像。 (C)2009 Elsevier Ltd. All rights reserved.
Photoconversion of o-hydroxycinnamates to coumarins and its application to fluorescence imaging
摘要:
(E)-o-水煤气产物通过合成并研究了它们的光化学行为在液态和固态中。通过¹H核磁共振光谱分析法(H-1 NMR spectroscopy)确认,(E)-o-水煤气产物通过(Z)-o-水煤气中间体转化为相应的对调quaresin。在p-toluenesulfonic acid的存在下,光转变被大大加速。比较了与对应对调quaresin的光学性质。通过光照射聚甲基丙烯酸甲酯薄膜中的甲酰苯,成功实现了荧光成像。 (C)2009 Elsevier Ltd. All rights reserved.
Synthesis of Coumarins and Neoflavones through Zinc Chloride Catalyzed Hydroarylation of Acetylenic Esters with Phenols
作者:Paulo Costa、Raquel Leão、Paula de F. de Moraes、Marcella Pedro
DOI:10.1055/s-0031-1289576
日期:2011.11
Acetylenic esters react with oxygenated phenols under solvent-free conditions in the presence of only 5 mol% of zincchloride as a catalyst to give coumarins and neoflavones in reasonable-to-good yields. phenols - catalysis - arylations - heterocycles - alkynes - esters