通过改良的合成方案,使用SnCl 2-乙酸作为催化剂,开发了一系列发光的5-芳基-四氢二苯并[a,i]菲啶。合成与各种功能一致,并显着提高了产率。这些衍生物在9739–2628 cm -1范围内显示出较大的摩尔吸收系数和较高的斯托克斯位移值。施主和受主基团显着诱导了电荷转移特性,从而导致在390–531 nm范围内具有中等量子产率的广泛发射特性。这些衍生物的质子化和季铵化研究表明,形成了一个新的红移吸收带,随后在发射中出现了增色效应,可以用作酸性变色传感器。
Dual behavior of 2-tetralone: A new approach for the synthesis of 5-aryl-7,8,13,14-tetrahydrodibenzo[<i>a</i>,<i>i</i>]phenanthridine
作者:Kulathu Iyer Sathiyanarayanan、Natesan Sundaramurthy Karthikeyan、Paduthapillai Gopal Aravindan、Seenan Shanthi、Ravindranath S. Rathore、Chang Woo Lee
DOI:10.1002/jhet.191
日期:2009.11
The one‐pot reaction of 2‐tetralone with ammonium acetate and substituted benzaldehydes affords in a good yield of 5‐aryl‐7,8,13,14‐tetrahydrodibenzo[a,i]phenanthridine or 2,4‐diaryl‐6,7‐benzo‐3‐azabicyclo[3.3.1]nonan‐9‐one. The course of the reaction seems to be dictated by the position of the substituents present on the benzaldehyde ring. J. Heterocyclic Chem., (2009).