Magnetic nano-catalyst catalyzed synthesis of 1-substituted tetrazole containing scaffolds via one pot MCR between amine with tri-ethyl orthoformate and azides.

Entry	Catalyst	Solvent	Catalyst loading	Temperature (°C)	Time (h)	Yield (%)	Ref.
1	Fe3O4@silica sulfonic acid	—	0.02 g	100	50	97	53
2	Chitosan supported magnetic ionic liquid nanoparticles (CSMIL)	—	2.5 mol%	70	1	92	54
3	Fe3O4@Quinol@Cu	—	0.01 g	100	40	92	55
4	Fe3O4@Phen@Mn	—	50 mg	100	40	92	56
5	Fe3O4@WO3-EAE-SO3H(iii)	H2O	0.01 g	60	30	95	57
6	Fe3O4/HT-NH2-CuII	H2O	0.005 g	90	1	94	58
7	Fe3O4@HT@AEPH2-CoII	H2O	0.005 g	90	60	95	59
8	Fe3O4/HT-GLYMO-TA	H2O	0.02 g	90	45	95	50