Corrigendum to “Copper ferrite superparamagnetic nanoparticles as a heterogeneous catalyst for directed phenol/formamide coupling” [Tetrahedron Lett. 58 (2017) 3370–3373] (Tetrahedron Letters (2017) 58(34) (3370–3373), (S0040403917309048), (10.1016/j.tetl

Article abstract of DOI:10.1016/j.tetlet.2021.153183

The authors regret that some characterization images of the catalyst and some NMR data of the compounds in Table 2 were shown incorrectly in the Supplementary Data. The coupling reactions were therefore re-run using the reported procedure and isolation of

Full text of DOI:10.1016/j.tetlet.2021.153183

Tetrahedron Letters 74 (2021) 153183
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Tetrahedron Letters
journal homepage: www.elsevier.com/locate/tetlet
Corrigendum
Corrigendum to ‘‘Copper ferrite superparamagnetic nanoparticles as a
heterogeneous catalyst for directed phenol/formamide coupling”
[Tetrahedron Lett. 58 (2017) 3370–3373]
⇑
Chung K. Nguyen, Ngon N. Nguyen, Kien N. Tran, Viet D. Nguyen, Tung T. Nguyen, Dung T. Le ,
Nam T.S. Phan
⇑
Faculty of Chemical Engineering, HCMC University of Technology, VNU-HCM, 268 Ly Thuong Kiet, District 10, Ho Chi Minh City, Viet Nam
The authors regret that some characterization images of the cat-
alyst and some NMR data of the compounds in Table 2 were shown
incorrectly in the Supplementary Data. The coupling reactions
were therefore re-run using the reported procedure and isolation
of the products was carried out. Thus, we would like to update
Table 2 in the paper, with respect to the yields, as shown below:
Additionally, in Table 1, the correct temperature and reaction
time should be 100 °C and 1 h. In the Supplementary Data,
Figs. S2–S23 and some characterisation data have been updated.
The updated Supplementary Data file has been published online
with this Corrigendum.
The authors would like to apologise for any inconvenience
caused.
Appendix A. Supplementary data
Supplementary data to this article can be found online at
https://doi.org/10.1016/j.tetlet.2021.153183.
DOI of original article: https://doi.org/10.1016/j.tetlet.2017.07.049
Corresponding authors.
E-mail addresses: ltdung@hcmut.edu.vn (D.T. Le), ptsnam@hcmut.edu.vn (N.T.S. Phan).
⇑
https://doi.org/10.1016/j.tetlet.2021.153183
0040-4039/Ó 2021 Elsevier Ltd. All rights reserved.

C.K. Nguyen, N.N. Nguyen, K.N. Tran et al.
Tetrahedron Letters 74 (2021) 153183
Table 2
Coupling of phenols containing the benzoazole motif and formamides.a
Entry
1
Phenol
Formamide
Product
Yield (%)
69
HC(O)NMe2
2
1
1
3
5
2
3
4
5
6
7
8
HC(O)NEt2
4
81
63
66
61
50
84
64
HC(O)N(iPr)2
6
1
7
HC(O)N(nBu)2
8
1
9
O
N
H
10
1
11
13
15
O
N
O
H
12
1
HC(O)NMe2
2
14
HC(O)NMe2
2
16
17
a
Reagents and conditions: (2-hydroxyphenyl)benzoazole (0.5 mmol), dialkylformamide (19 mmol), CuFe2O4 (0.025 mmol, 5 mol%), tBuOOH/water (0.5 mmol), 100 °C, 2 h.
Isolated yields. See ESI for details.
2