Introducing deep eutectic solvents to polar organometallic chemistry : chemoselective addition of organolithium and grignard reagents to ketones in air

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Vidal, Cristian and Garcia Alvarez, Joaquin and Hernán-Gómez, Alberto and Kennedy, Alan R and Hevia, Eva (2014) Introducing deep eutectic solvents to polar organometallic chemistry : chemoselective addition of organolithium and grignard reagents to ketones in air. Angewandte Chemie International Edition, 53 (23). 5969–5973. ISSN 1521-3773 (https://doi.org/10.1002/anie.201400889)

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Abstract

Despite their enormous synthetic relevance, the use of polar organolithium and Grignard reagents is greatly limited by their requirements of low temperatures in order to control their reactivity as well as the need of dry organic solvents and inert atmosphere protocols to avoid their fast decomposition. Breaking new ground on the applications of these commodity organometallics in synthesis under more environmentally friendly conditions, this work introduces deep eutetic solvents (DESs) as a green alternative media to carry out chemoselective additions of ketones in air at room temperature. Comparing their reactivities in DES with those observed in pure water suggest that a kinetic activation of the alkylating reagents is taking place, favoring nucleophilic addition over the competitive hydrolysis, which can be rationalized through formation of halide-rich magnesiate or lithiate species.

ORCID iDs

Vidal, Cristian, Garcia Alvarez, Joaquin, Hernán-Gómez, Alberto, Kennedy, Alan R ORCID logoORCID: https://orcid.org/0000-0003-3652-6015 and Hevia, Eva ORCID logoORCID: https://orcid.org/0000-0002-3998-7506;
  • Item type:Article
    ID code:48652
    Dates:
    Date
    Event
    2 June 2014
    Published
    25 April 2014
    Published Online
    Notes:© 2014 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim. This is the accepted version of the following article: Introducing deep eutectic solvents to polar organometallic chemistry : chemoselective addition of organolithium and grignard reagents to ketones in air. / Vidal, Cristian; Garcia Alvarez, Joaquin; Hernán-Gómez, Alberto; Kennedy, Alan R; Hevia, Eva. In: Angewandte Chemie International Edition, Vol. 53, No. 23, 02.06.2014, p. 5969–5973., which has been published in final form at http://onlinelibrary.wiley.com/doi/10.1002/anie.201400889/abstract.
    Subjects:Science > Chemistry
    Department:Faculty of Science > Pure and Applied Chemistry
    Depositing user: Pure Administrator
    Date deposited:18 Jun 2014 15:15
    Last modified:14 Dec 2024 01:15
    Related URLs:
    URI:https://strathprints.strath.ac.uk/id/eprint/48652
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