1000353-40-1Relevant articles and documents
Nanomagnetically modified sulfuric acid (γ-Fe2O3@SiO2-OSO3H): An efficient, fast, and reusable green catalyst for the Ugi-like Groebke-Blackburn-Bienaymé three-component reaction under solvent-free conditions
Rostamnia, Sadegh,Lamei, Kamran,Mohammadquli, Mohsen,Sheykhan, Mehdi,Heydari, Akbar
, p. 5257 - 5260 (2012)
Superparamagnetic nanoparticles of modified sulfuric acid (γ-Fe2O3@SiO2-OSO3H) represent a straightforward and green catalyst for the rapid synthesis of aminoimidazopyridine skeletons via the Ugi-like Groebke-Blackburn-Bienaymé three-component reaction. The γ-Fe2O3@SiO2-OSO3H catalyst could be recovered and reused in five reaction cycles, giving a total TON = 453. The products were prepared under solvent-free conditions without any additives.
Choline chloride/urea as a deep eutectic solvent/organocatalyst promoted three-component synthesis of 3-aminoimidazo-fused heterocycles via Groebke-Blackburn-Bienayme process
Shaabani, Ahmad,Hooshmand, Seyyed Emad
, p. 310 - 313 (2016/01/12)
The catalytic activity of urea-, metal- and organic acid-based/choline chloride deep eutectic solvents/organocatalysts was investigated for the synthesis of 3-aminoimidazo-fused heterocycles via a one-pot domino reaction of an aldehyde, an isocyanide and 2-aminoheterocycles. The urea-based/choline chloride system exhibited significant catalytic activity for the reaction and could be reused in four consecutive reactions with no considerable loss in catalytic activity.
RuCl3-catalyzed solvent-free Ugi-type Groebke-Blackburn synthesis of aminoimidazole heterocycles
Rostamnia, Sadegh,Hassankhani, Asadollah
, p. 18626 - 18629 (2013/10/21)
RuCl3 catalyzes the efficient Ugi-type Groebke-Blackburn condensations of aldehydes and 2-amino pyridines with isocyanides under solvent free conditions without any ligand or activator. It is shown that RuCl 3 catalyzed aminoimidazol