Synthesis, structure and basicity of 1,9-bis(dimethylamino)-dibenzothiophene and 1,9-bis(dimethylamino)-dibenzoselenophene1,2)
作者:Heinz A. Staab、Matthias Höne、Claus Krieger
DOI:10.1016/s0040-4039(00)82074-2
日期:1988.1
In the context of studies on bis(dialkylamino)arenes with neighbouring amino functions the title compounds 5 and 6 were synthesized. Their structures and those of the monoprotonated cations 5a and 6a were determined by X-ray analysis. The strong basicities of 5 and 6 (pKa = 11.9 and 11.8 ± 0.1) are discussed in terms of lone pair interactions in 5 and 6 and the geometry of the N⋯H⋯N hydrogen bonds