1374356-53-2Relevant academic research and scientific papers
Synthesis, structure and conformation of terphenylene-derived oxacalixaromatics
Hu, Wen-Jing,Zhao, Xiao-Li,Ma, Ming-Liang,Guo, Fang,Mi, Xian-Qiang,Jiang, Biao,Wen, Ke
, p. 1448 - 1454 (2012/04/11)
Oxacalix[4]aromatics comprised of terphenylene units have been synthesized by cyclooligomerization of 5′-tert-butyl-1,1′:3′,1″- terphenyl-4,4″-diol (1) and electron-deficient meta-dihalogenated benzene and heterocycles. Single-crystal X-ray analysis revealed that oxacalix[2]terphenylene[2]pyrazine 13 adopts a chair conformation, forming a molecular cavity to trap an ethyl acetate guest molecule in the solid state. 1,3-Alternate conformations are adopted by other oxacalix[2]terphenylene[2] aromatics (11, 12 and 15), which form a narrow tweezer-like molecular cavity that is incapable of encapsulating any guest molecules. Oxacalix[4]aromatics comprised of terphenylene units have been synthesized, andtheir structures and conformations have been elucidated. Copyright
