Comparison of CoFe₂O₄/Cu(OH)₂ catalytic activity with various catalysts reported for the one-pot synthesis of 2-phenyl-2-(4-phenyl-1H-1,2,3-triazol-1-yl)ethanol from styrene oxide, phenylacetylene and sodium azide^a.

Entry	Catalyst system	NaN3 (mmol)	Conditions	Time (h)	Yield (%)	Ref.
1	CoFe2O4/Cu(OH)2 (10 mol%)	1.2	H2O/60 °C	3.3	94	This work
2	Nano CuFe2O4 (10 mol%)	1.1	H2O/60 °C	6	87	29
3	Nano Fe2O3 (10 mol%)	1.2	H2O/100 °C	5	81	45
4	Cu nanoparticles/C (0.5 mol%)	1.1	H2O/70 °C	8	93	23
5	Cu(i)@phosphorated SiO2 (0.64 mol%)	1.1	H2O/60 °C	1	93	30
6	Copper(i)–zeolite (8 mol%)	1.2	H2O/r.t.	20	77	27
7	CuI (5 mol%)	1.1	PEG-400/r.t.	16	83	37
8	CuCl2 (10 mol%)	1	H2O/r.t.	5	35	31
9	Cu(NO3)2·3H2O (10 mol%)	1	H2O/r.t.	5	36.8	31
10	[Cu(bhppda)H2O]b (5 mol%)	1.2	Ascorbic acid/H2O/r.t.	2	90	28
11	CuSO4·5H2O (10 mol%)	1.2	Sodium ascorbate/H2O/r.t.	4	92	26

^aAll reactions were carried out with styrene oxide (1 mmol) and phenylacetylene (1 mmol).

^bbhppda = N²,N⁶-bis(2-hydroxyphenyl)pyridine-2,6-dicarboxamidato dianion.