From: Magnetic γFe2O3@Sh@Cu2O: an efficient solid-phase catalyst for reducing agent and base-free click synthesis of 1,4-disubstituted-1,2,3-triazoles
Entry
Catalyst (30 mg)
Time
Isolated yield
1
Fe3O4
5 h
–
2
Sh
3
Fe3O4@Sh
4
γFe2O3@Sh@Cu2O
20 min
94
5
HA
Trace
6
Fe3O4@HA
15
7
Fe3O4@HA@Cu
45 min
90
8
Cu2Fe2O4, sodium ascorbate
9
CuBr2