Synthesis of β-substituted-1,2,3-triazoles from epoxide or thiiranes in the presence of [Fe₃O₄@PAM–Schiff base–Mn][ClO₄] MNPs.

Entry	Thiiranes/epoxides	Alkyne	Product	Time (min)	Yielda,b (%)
1				15	92
2				40	92
3				35	89
4				35	87
5				15	100
6				20	97
7				35	94
8				30	95
9				35	93
10				25	98
11				25	98
12				35	95
13				20	99
14				30	97
15				15	100

^aConditions: epoxide or thiirane (1 mmol), alkyne (1 mmol), sodium azide (1.3 mmol) and [Fe₃O₄@PAM–Schiff base–Mn][ClO₄] in reflux of ethanol (10 mL).

^bIsolated yields.