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. 2016 Jul 29;17(8):1221. doi: 10.3390/ijms17081221

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© 2016 by the authors; licensee MDPI, Basel, Switzerland.

This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC-BY) license (http://creativecommons.org/licenses/by/4.0/).

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Scheme 1 — Synthesis of the target 2-((benzimidazol-2-yl)thio)-1-arylethan-1-ones 5a–w and their corresponding sulfate salts 4a–w. Reagents and conditions: (i) CS₂/KOH/ethanol/reflux 2 h; (ii) Glacial acetic acid/reflux 0.5 h; (iii) Aqueous Na₂CO₃/r.t. (room temperature) 2 h.