Well-Defined Enantiopure 1,1‘-Binaphthyl-Based Oligomers: Synthesis, Structure, Photophysical Properties, and Chiral Sensing
作者:Ling Ma、Peter S. White、Wenbin Lin
DOI:10.1021/jo0255680
日期:2002.11.1
A series of well-defined enantiopure 1,1'-binaphthyl-based oligomers linked through their 6,6'-positions, ranging from quaternaphthol to decanaphthol, have been synthesized by Suzuki and Stille coupling reactions. These novel oligonaphthyls have been characterized by (1)H and (13)C[(1)H] NMR spectroscopy and high-resolution mass spectrometry. A combination of X-ray structural and CD studies suggests
Suzuki和Stille偶联反应合成了一系列定义明确的对映体纯的1,1'-联萘基低聚物,它们通过它们的6,6'-位置连接,范围从季铵酚到十烷酚。这些新颖的寡萘基已通过(1)H和(13)C [(1)H] NMR光谱和高分辨率质谱进行了表征。X射线结构和CD研究的结合表明,这些寡萘基采用锯齿形而不是螺旋形构象。随着链长的增加,化合物显示出增强的荧光。寡酚的荧光强度比1,1'-联-2-萘酚的荧光强度高出近2个数量级,可以用对映选择性因子为1.24的反式1,2-二氨基环己烷有效和对映选择性地猝灭。