Nickel-Imidazolium Low Transition Temperature Mixtures with Lewis-Acidic Character

Low transition temperature mixtures (LTTMs) are a new generation of solvents that have found extensive application in organic synthesis. The interactions between the components often generate highly activated, catalytically active species, thus opening the possibility of using LTTMs as catalysts, ra...

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Main Authors: Mario Martos, Isidro M. Pastor
Format: Article
Language:English
Published: MDPI AG 2023-08-01
Series:Molecules
Subjects:
Online Access:https://www.mdpi.com/1420-3049/28/17/6338
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author Mario Martos
Isidro M. Pastor
author_facet Mario Martos
Isidro M. Pastor
author_sort Mario Martos
collection DOAJ
description Low transition temperature mixtures (LTTMs) are a new generation of solvents that have found extensive application in organic synthesis. The interactions between the components often generate highly activated, catalytically active species, thus opening the possibility of using LTTMs as catalysts, rather than solvents. In this work, we introduce a nickel-based imidazolium LTTM, study its thermal behavior and explore its catalytic activity in the solvent-free allylation of heterocycles with allylic alcohols. This system is effective in this reaction, affording the corresponding products in excellent yield without the need for additional purifications, thus resulting in a very environmentally friendly protocol.
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spelling doaj.art-ca1420f34eaa4162a438f3e3d0df82ef2023-11-19T08:34:48ZengMDPI AGMolecules1420-30492023-08-012817633810.3390/molecules28176338Nickel-Imidazolium Low Transition Temperature Mixtures with Lewis-Acidic CharacterMario Martos0Isidro M. Pastor1Institute of Organic Synthesis, University of Alicante, ctra. San Vicente del Raspeig s/n, San Vicente del Raspeig, 03690 Alicante, SpainInstitute of Organic Synthesis, University of Alicante, ctra. San Vicente del Raspeig s/n, San Vicente del Raspeig, 03690 Alicante, SpainLow transition temperature mixtures (LTTMs) are a new generation of solvents that have found extensive application in organic synthesis. The interactions between the components often generate highly activated, catalytically active species, thus opening the possibility of using LTTMs as catalysts, rather than solvents. In this work, we introduce a nickel-based imidazolium LTTM, study its thermal behavior and explore its catalytic activity in the solvent-free allylation of heterocycles with allylic alcohols. This system is effective in this reaction, affording the corresponding products in excellent yield without the need for additional purifications, thus resulting in a very environmentally friendly protocol.https://www.mdpi.com/1420-3049/28/17/6338low transition temperature mixturesallylic alcoholsimidazolium saltstetrachloronickelatessustainable chemistry
spellingShingle Mario Martos
Isidro M. Pastor
Nickel-Imidazolium Low Transition Temperature Mixtures with Lewis-Acidic Character
Molecules
low transition temperature mixtures
allylic alcohols
imidazolium salts
tetrachloronickelates
sustainable chemistry
title Nickel-Imidazolium Low Transition Temperature Mixtures with Lewis-Acidic Character
title_full Nickel-Imidazolium Low Transition Temperature Mixtures with Lewis-Acidic Character
title_fullStr Nickel-Imidazolium Low Transition Temperature Mixtures with Lewis-Acidic Character
title_full_unstemmed Nickel-Imidazolium Low Transition Temperature Mixtures with Lewis-Acidic Character
title_short Nickel-Imidazolium Low Transition Temperature Mixtures with Lewis-Acidic Character
title_sort nickel imidazolium low transition temperature mixtures with lewis acidic character
topic low transition temperature mixtures
allylic alcohols
imidazolium salts
tetrachloronickelates
sustainable chemistry
url https://www.mdpi.com/1420-3049/28/17/6338
work_keys_str_mv AT mariomartos nickelimidazoliumlowtransitiontemperaturemixtureswithlewisacidiccharacter
AT isidrompastor nickelimidazoliumlowtransitiontemperaturemixtureswithlewisacidiccharacter