本文用3,5-二(5-溴嘧啶-2-基)-1-叔丁基苯(2)与3,5-二(4,4,5,5-四甲基-1,3,2,-二氧杂戊硼烷-2-基)-1-叔丁基苯(3)为单体在Pd(PPh_3)_4催化下,经一步Suzuki交叉偶联反应合成得到3种新型含嘧啶环的共轭大环化合物1(1_(8mer),1_(10mer)和1_(12mer))。这些化合物的结构均通过1H NMR和MALDI-TOF MS表征,并利用紫外、荧光光谱对其光学性能进行了初步的研究。结果表明,这种方法可以高效地制备一系列具有不同环大小的共轭大环化合物,为进一步制备类似的共轭大环化合物提供了新的合成策略。
Three pyrimidine-contained w-conjugated macrocycles 1 (18mer 1 10mer and 1 12mer) were synthesized by Pd( PPh3 )4-catalyzed one-step Suzuki cross-coupling reaction between (3,5-di(5-bromopyrimidine-2-yl)-1-tert- butylbenzene) (2) and ( 3,5-di (4,4,5,5-tetramethyl-1,3,2-dioxaborolane) -1-tert-butylbenzene) (3). The structures of macroeyeles 1 were characterized by ^1 H NMR and MALDI-TOF MS, and their optical properties were investigated by UV-Vis absorption and fluorescence spectrometry. The results showed that the one-step method couhl be efficient in preparing conjugated macrocycles with expended ring size, which provide a new synthetic strategy for the preparation of similar conjugated macrocycles.