作者:Younes Laras、Vincent Hugues、Yogesh Chandrasekaran、Mireille Blanchard-Desce、Francine C. Acher、Nicolas Pietrancosta
DOI:10.1021/jo301652j
日期:2012.9.21
derivatives bearing electron-releasing or -withdrawing substituents have been synthesized using mono- or/and biphasic methodologies. By controlling the regioselectivity of addition into our electrophilic intermediate, we also characterized by which mechanism the Doebner–Miller cyclization step occurred. As anticipated, electron-releasing substituents induce a red shift of the low-energy absorption allowing
已使用单相或/和双相方法合成了一系列带有电子释放或吸电子取代基的二羧酸喹啉衍生物。通过控制向我们的亲电中间体中添加的区域选择性,我们还通过Doebner-Miller环化步骤发生的机理进行了表征。如所预期的,释放电子的取代基引起低能量吸收的红移,从而允许在可见光区域中激发。此外,通过发挥电子释放取代基的强度和位置,发色团具有令人感兴趣的荧光特性,例如大的斯托克频移,良好的荧光量子产率,可见绿色-黄色区域的发射以及近红外中合理的双光子吸收已获得区域。这些小尺寸的荧光团,