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Synthesis and characterization of herbicidal ionic liquids based on (4-chloro-2-methylphenoxy)acetate and phenoxyethylammonium

Kamil Ciarka, Radoslaw Olszewski, Tadeusz Praczyk, and Juliusz Pernak

Faculty of Chemistry, Adam Mickiewicz University, Poznan, Poland

 

E-mail: kamil.ciarka@adob.com.pl

Received: 3 November 2020  Accepted: 16 March 2021

Abstract:

Ten ionic liquids containing the (4-chloro-2-methylphenoxy)acetate (MCPA) anion and domiphen derived phenoxyethylammonium cation were synthesized. The obtained compounds differed in terms of the substitution of the phenoxyethylammonium group in the ring (the presence of a methyl group in the meta or para positions and the presence of chlorine in the para position) as well as the length of the alkyl chain (from hexyl to tetradecyl). The basic physicochemical properties of the obtained ionic liquids (solubility and thermal stability) were characterized and their structures were confirmed. The herbicidal activity of the compounds was tested under greenhouse conditions using cornflower (Centaurea cyanus L.) as the test plant.

Keywords: Ionic liquids; Herbicides; Phenoxyethylammonium; MCPA; Domiphen

Full paper is available at www.springerlink.com.

DOI: 10.1007/s11696-021-01610-1

 

Chemical Papers 75 (7) 3607–3615 (2021)

Friday, June 14, 2024

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