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Retraction: CO2 as oxidant: an unusual light-assisted catalyst free oxidation of aldehydes to acids under mild conditions
Shafiur Rehman
Khan
a,
Sandhya
Saini
ab,
K.
Naresh
c,
Alka
Kumari
c,
Vineet
Aniya
c,
Praveen K.
Khatri
a,
Anjan
Ray
ad and
Suman L.
Jain
*a
aChemical & Material Sciences Division, CSIR-Indian Institute of Petroleum, Haridwar Road, Mohkampur, Dehradun-248005, India. E-mail: suman@iip.res.in; Fax: +911352525788; Tel: +911352525788
bAcademy of Scientific and Innovative Research, Ghaziabad-201002, India
cProcess Engineering Technology Transfer Division, CSIR-Indian Institute of Chemical Technology, Hyderabad-500007, India
dDirector, CSIR-Indian Institute of Petroleum, Mohkampur, Dehradun-248004, India
First published on 17th January 2025
Abstract
Retraction of ‘CO2 as oxidant: an unusual light-assisted catalyst free oxidation of aldehydes to acids under mild conditions’ by Shafiur Rehman Khan et al., Chem. Commun., 2022, 58, 2208–2211, https://doi.org/10.1039/D1CC06057K.
The Royal Society of Chemistry hereby wholly retracts this Chemical Communications article due to concerns with the reliability of the NMR spectra reported in the supporting information.
Repeating fragments can be observed in the baselines of multiple NMR spectra including the 1H NMR spectra in Fig. S1, S3, S9, S13, S15 and S17, and the 13C NMR spectra in Fig. S12, S14, S16 and S18.
There are inconsistencies between the appearance of the baseline and peaks in multiple NMR spectra, including the 1H NMR spectra in Fig. S5 and S9, and the 13C NMR spectra in S2, S8, S10 and S14.
Given the significance of the concerns regarding the integrity of the NMR data, the findings presented in this paper are no longer reliable.
All authors were informed about the retraction. Suman L. Jain accepts the decision to retract. The following authors requested to include the following statements regarding their contributions, but did not state whether they agree or disagree with the decision to retract. The other authors did not respond.
Shafiur Rehman Khan was involved in the experimental work, product characterization and synthesis, and preparation of the supporting information file.
The contributions of K. Naresh, Alka Kumari and Vineet Aniya to this article were solely demonstrating the reaction in the flow photoreactor. They were not involved in preparing, analyzing, or presenting the NMR spectra while preparing the manuscript.
Richard Kelly, Executive Editor, Chemical Communications
12th December 2024.
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