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    Université de Fribourg

    Synthesis and rotation barriers in 2, 6-Di-(o-anisyl) anisole

    Yamamoto, Takuhei ; Chen, Pi-Yu ; Lin, Guangxin ; Błoch-Mechkour, Anna ; Jacobsen, Neil E. ; Bally, Thomas ; Glass, Richard S.

    In: Journal of Physical Organic Chemistry, 2012, p. -

    Variable temperature ¹H NMR spectroscopic studies of 2, 6-di(o-anisyl) anisole show syn and anti atropisomers at low temperature. The barrier for interconverting these isomers by rotation about the aryl-aryl bond, found by fitting the experimental data, is 41.2 kJ/mol.

    Université de Fribourg

    Synthesis and structure of m-terphenyl thio-, seleno-, and telluroethers

    Zakai, Uzma I. ; Błoch-Mechkour, Anna ; Jacobsen, Neil E. ; Abrell, Leif ; Lin, Guangxin ; Nichol, Gary S. ; Bally, Thomas ; Glass, Richard S.

    In: Journal of Organic Chemistry, 2011, vol. 75, no. 24, p. 8363–8371

    Several routes for the synthesis of m-terphenyl thio-, seleno-, and telluroethers were investigated. m-Terphenyl iodides react with diphenyl diselenides or ditellurides (CsOH·H₂O, DMSO, 110 °C) to give the desired compounds in 19−84% yield which significantly extends the previously reported such reactions because o-benzyne cannot be an intermediate as previously...