Open Access Article
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Expression of concern: Graphene oxide: an efficient and reusable carbocatalyst for aza-Michael addition of amines to activated alkenes
Sanny
Verma
,
Harshal P.
Mungse
,
Neeraj
Kumar
,
Shivani
Choudhary
,
Suman L.
Jain
*,
Bir
Sain
and
Om P.
Khatri
*
Chemical Sciences Division, Indian Institute of Petroleum, Mohkampur, Dehradun-248005, India. E-mail: suman@iip.res.in; opkhatri@iip.res.in; Fax: +91-135-2660202; Tel: +91-135-2525901
First published on 17th January 2025
Abstract
Expression of concern for ‘Graphene oxide: an efficient and reusable carbocatalyst for aza-Michael addition of amines to activated alkenes’ by Sanny Verma et al., Chem. Commun., 2011, 47, 12673–12675, https://doi.org/10.1039/C1CC15230K.
Chemical Communications is publishing this expression of concern in order to alert our readers that we are presently unable to confirm the reliability of the conclusions presented in the article due to concerns that insufficient product characterization data was provided to support the conclusions.
An investigation is underway, and an expression of concern will continue to be associated with this article until a final outcome is reached.
Signed: Richard Kelly, Executive Editor, Chemical Communications
Date: 12th December 2024
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