From: Preparation and application of FNAOSiPPEA/Cu(II) as a novel magnetite almondshell based Lewis acid-Bronsted base nano-catalyst for the synthesis of pyrimidobenzothiazoles
Entry
Solvent
Time (h)
Yield (%)a
1
–
97
2
EtOH
5
61
3
H2O
57
4
EtOH/H2O
48