作者:Gruzdev Matvey、Chervonova Ulyana、Bumagina Natalia、Kolker Arkadiy
DOI:10.2174/1570178614666161118155955
日期:2017.1.3
presence of a catalytic amount of 0.1 M HCl was proposed to achieve a high yield of the target product. All synthesized compounds were characterized by infrared spectroscopy, nuclear magnetic resonance spectroscopy, mass spectrometry and elemental analysis. Values of fluorescence quantum yield and Stokes shift were calculated for boron fluoride complexes of dipyrrolylmethenes. Methods: IR spectra were
背景:在这项工作中,考虑了几种合成4,4-二氟-8-(4'-羧苯基)-4-硼3a,4a-二氮杂-s-茚并四苯的方法。获得这种氟化硼配合物的过程涉及以下步骤:在4-甲酰基苯甲酸的羧基上引入保护基(甲氧基,1'-吡咯烷-2,5-二价,三氯乙氧基),吡咯,去除保护,氧化和适当的络合。提出了在催化量的0.1M HCl存在下吡咯与4-甲酰基苯甲酸直接缩合的方法,以实现目标产物的高产率。所有合成的化合物均通过红外光谱,核磁共振光谱,质谱和元素分析进行表征。 方法:在Bruker Vertex 80V装置上,从带有KBr的颗粒中记录7500–350 cm –1区域的红外光谱。在Bruker Avance-500仪器(500.13 MHz)上,在CDCl 3中对1核和13核进行NMR光谱研究,内标为TMS。结晶化合物的元素分析是在FlashEA 1112分析仪上进行的。质谱记录在JMS-700 JEOL(FAB)和JMS-100GCV