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1 article(s) from Hans, Morgan

Efficient synthetic protocols for the preparation of common N-heterocyclic carbene precursors

Morgan Hans,
Jan Lorkowski,
Albert Demonceau and
Lionel Delaude

Beilstein J. Org. Chem. 2015, 11, 2318–2325, doi:10.3762/bjoc.11.252

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Scheme 1: Various synthetic paths leading to the formation of NHCs.

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Scheme 2: Retrosynthetic path for the preparation of symmetrical imidazolium and imidazolinium salts from sim...

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Figure 1: Structures of the imidazolium and imidazolinium salts discussed in this study and their acronyms.

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Scheme 3: Synthesis of 1,3-dicyclohexylimidazolium tetrafluoroborate (ICy·HBF₄).

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Scheme 4: Synthesis of 1,3-dibenzylimidazolium tetrafluoroborate (IBn·HBF₄).

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Scheme 5: Synthesis of 1,3-dimesitylimidazolium salts (IMes·HCl and IMes·HBF₄).

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Scheme 6: Synthesis of 1,3-dimesitylimidazolinium chloride (SIMes·HCl).

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Scheme 7: Synthesis of 1,3-bis(2,6-diisopropylphenyl)imidazolium chloride (IDip·HCl).

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Scheme 8: Synthesis of 1,3-bis(2,6-diisopropylphenyl)imidazolinium chloride (SIDip·HCl).

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Scheme 9: Synthesis of 1,3-bis(2,6-bis(diphenylmethyl)-4-methylphenyl)imidazolium chloride (IDip*·HCl).

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Published 25 Nov 2015

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