1374986-90-9Relevant academic research and scientific papers
An unexpected synthesis of dihydrophenazines en route to benzimidazolium salts
Borguet, Yannick,Zaragoza, Guillermo,Demonceau, Albert,Delaude, Lionel
supporting information; experimental part, p. 1356 - 1362 (2012/06/30)
The oxidation of various N,N'-diarylbenzene-1,2-diamines bearing bulky aromatic substituents with sodium periodate on wet silica gel afforded a series of five new dihydrophenazines instead of the expected cyclohexadiene-1,2- diimines. The reaction most likely proceeds via a 1,6-electrocyclic path and provides a convenient access to an important class of nitrogen heterocycles. Subsequent treatment of the mesityl derivative with chloromethyl pivalate and silver triflate led to the corresponding benzimidazolium salt. Copyright
