Synthesis and Crystal Structure Determination of 4’,9’,4”,9”-Tetra- t -Butyl- 1’,6’,1”,6”-Tetramethoxy-2,5-Dithia[3.3] Metabiphenylophane
作者： Tetsuji Moriguchi , Tatsuya Egami , Daisuke Yakeya , Venkataprasad Jalli , Kenji Yoza
关键词: Condensation reaction 、 Biphenyl 、 Crystal structure 、 Single crystal 、 Crystallography 、 Conformational isomerism 、 Calixarene 、 Chemistry 、 Crystal 、 Dihedral angle
摘要: The title compound 4’,9’,4”,9”-tetra-tert-butyl-1’,6’,1”,6”-tetramethoxy-2,5-dithia[3.3] metabiphenylophane was synthesized as a calixarene like large-sized metacyclophane from the corresponding 3,3’-bis(chloromethyl)-5,5’-bis(1,1-dimethylethyl)-2,2’-dimethoxy-1,1’-biphenyl and 3,3’-bis (mercaptomethyl)-5,5’-bis(1,1-dimethylethyl)-2,2’-dimethoxy-1,1’-biphenyl via an intermolecular condensation reaction. characterized using 1H NMR spectroscopy mass spectrometry. Its exact conformational structure determined single crystal X-ray diffraction analysis. has quite strained 1,2-alternate because of its two high dihedral angled rigid biphenyl parts in crystal. includes isomers different conformers, ratio is 78:22.
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