Synthesis, Resolution, and Applications of 1,16-Dihydroxytetraphenylene as a Novel Building Block in Molecular Recognition and Assembly<sup>1</sup>
作者:Jian-Feng Wen、Wei Hong、Ke Yuan、Thomas C. W. Mak、Henry N. C. Wong
DOI:10.1021/jo0302408
日期:2003.11.1
packing of the hydrogen bonded complex between (+/-)-2 and 4,4'-bipyridine was different from the one formed from (S)-2 and 4,4'-bipyridine. It was found that an infinite zigzag chain with alternate chirality was formed in the assembly of (+/-)-2 and 4,4'-bipyridine, while (S)-2 and 4,4'-bipyridine failed to show the same assembly pattern. The reason (+/-)-2 formed an alternate and zigzag chain with 4,4'-bipyridine
本文涉及通过采用新型的NBS溴化途径合成1,16-二羟基四亚苯基(DHTP)(2)。(+/-)-DHTP 2成功解析为其旋光对映体,并转化为(+/-)-1,16-双(二苯基膦基)四亚苯基(BPTP)(26),其铂络合物BPTP-PtCl(2)( 27)。作为氢键供体,使外消旋和旋光的DHTP 2与4,4'-联吡啶组装形成优质的单晶。这些晶体的X射线衍射研究表明,(+/-)-2和4,4'-联吡啶之间的氢键配合物的晶体堆积不同于由(S)-2和4,4'形成的混合物-联吡啶。发现在(+/-)-2和4,4'-联吡啶的组装物中形成了具有交替手性的无限之字形链,而(S)-2和4,4' -联吡啶未能显示出相同的组装模式。(+/-)-2与4,4'-联吡啶形成交替的锯齿形链的原因很可能是由于这种超分子组装体的固有稳定性所致。还研究了在铂(II)方向上2和旋光性BINAP之间的手性识别。(1)H和(31)P N