Greener synthesis of 1,2,3-triazoles using a copper(i)-exchanged magnetically recoverable β-zeolite as catalyst†
Danilo Yano
de Albuquerque, 
a
Luanne E. M.
Ferreira,
b
Thiago M.
Lima,
*b
Carolina G. S.
Lima,
c
Ernesto A.
Urquieta-González,
d
Márcio W.
Paixão
a
and
Ricardo S.
Schwab
*a
a
Luanne E. M.
Ferreira,
b
Thiago M.
Lima,
*b
Carolina G. S.
Lima,
c
Ernesto A.
Urquieta-González,
d
Márcio W.
Paixão
a
and
Ricardo S.
Schwab
*a
Abstract
Herein, we describe the preparation and thorough characterization of a novel magnetically recoverable copper(I)-exchanged β-zeolite and its use as an efficient catalyst for the synthesis of 1,2,3-triazoles via the one-pot three-component reaction of organic halides, terminal acetylenes, and sodium azide in water. The magnetically recoverable β-zeolite could be easily separated from the reaction mixture with the aid of a magnet and reused in several consecutive reactions. Importantly, a series of characterizations studies allowed us to disclose the mechanism for the deactivation of the catalyst, and therefore to propose a method for its reactivation.
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