An efficient reusable silver-exchanged tungstophosphoric acid heterogeneous catalyst for solvent-free intermolecular hydroamination of alkynes.
Hydroamination of alkynes with both aromatic and aliphatic amines proceeds efficiently in the presence of silver-exchanged tungstophosphoric acid (AgTPA) catalyst under solvent-free conditions to afford ketimines in excellent yields.
Lingaiah
N
N
Catalysis Laboratory, I&PC Division, Indian Institute of Chemical Technology, Hyderabad, 500 007, India. nakkalingaiah@iict.res.in
Babu
N Seshu
NS
Reddy
K Mohan
KM
Prasad
P S Sai
PS
Suryanarayana
I
I