Journal Pre-proof Hyperbranched polyethylenimine-supported copper(II) ions as a macroliganted homogenous catalyst for strict click reactions of azides and alkynes in water Hicham Ben El Ayouchia, Hamid ElMouli, Lahoucine Bahsis, Hafid Anane, Rachid Laamari, Carlos J. Gómez-García, Miguel Julve, Salah-Eddine Stiriba PII: S0022-328X(19)30324-9 DOI: https://doi.org/10.1016/j.jorganchem.2019.120881 Reference: JOM 120881 To appear in: Journal of Organometallic Chemistry Received Date: 12 June 2019 Revised Date: 26 July 2019 Accepted Date: 29 July 2019 Please cite this article as: H. Ben El Ayouchia, H. ElMouli, L. Bahsis, H. Anane, R. Laamari, C.J. Gómez-García, M. Julve, S.-E. Stiriba, Hyperbranched polyethylenimine-supported copper(II) ions as a macroliganted homogenous catalyst for strict click reactions of azides and alkynes in water, Journal of Organometallic Chemistry (2019), doi: https://doi.org/10.1016/j.jorganchem.2019.120881. This is a PDF file of an article that has undergone enhancements after acceptance, such as the addition of a cover page and metadata, and formatting for readability, but it is not yet the definitive version of record. This version will undergo additional copyediting, typesetting and review before it is published in its final form, but we are providing this version to give early visibility of the article. Please note that, during the production process, errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain. © 2019 Published by Elsevier B.V.