1225463-76-2Relevant articles and documents
Amination of benzoxazoles and 1,3,4-oxadiazoles using 2,2,6,6- tetramethylpiperidine-N-oxoammonium tetrafluoroborate as an organic oxidant
Wertz, Sebastian,Kodama, Shintaro,Studer, Armido
, p. 11511 - 11515 (2012/01/11)
No transition metals are necessary to convert benzoxazoles and 1,3,4-oxadiazoles into the corresponding pharmacologically interesting 2-aminated heterocycles by formal direct C(2)-amination using tetramethylpiperidine-N-oxoammonium tetrafluoroborate (TEMPO+BF 4-) as an oxidant (see scheme; TEMP=2,2,6,6- tetramethylpiperidine; TfOH=trifluoromethanesulfonic acid).
Cobalt- and manganese-catalyzed direct amination of azoles under mild reaction conditions and the mechanistic details
Kim, Ji Young,Cho, Seung Hwan,Joseph, Jomy,Chang, Sukbok
supporting information; experimental part, p. 9899 - 9903 (2011/02/25)
A bonding moment: A new cobalt- or manganese-catalyzed amination of azoles has been developed using peroxide and an acid additive to couple various types of azoles with ammonia, and primary or secondary amines (see scheme). The catalyst loadings are low, the optimal reaction conditions are mild, and the substrate scope is broad. The product azoles are an important pharmacophore of high biological activity. Copyright