posted on 2019-08-06, 16:09authored byThanh Binh Nguyen, Le Anh Nguyen, Pascal Retailleau
The S8/DMSO combination
was found to be an excellent
oxidizing agent for ipso,α,β,γ-tetramination
of cyclohexanones with two molecules of o-phenylenediamines
in the presence of TFA as a catalyst. The strategy could be applied
to pyrido cyclohexanes as a direct method to extend the fused heteroaromatic
system.