Modular ligand variation in calcium bisimidazoline complexes: effects on ligand redistribution and hydroamination catalysis

Wixey, James S. and Ward, Benjamin David ORCID: https://orcid.org/0000-0003-1406-5940 2011. Modular ligand variation in calcium bisimidazoline complexes: effects on ligand redistribution and hydroamination catalysis. Dalton Transactions 40 (30) , pp. 7693-7696. 10.1039/C1DT10732A

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Abstract

A series of calcium complexes supported by chiral bisimidazoline ligands have been studied in the catalytic intramolecular hydroamination/cyclisation of amino-olefins. The complexes [Ca(R-BIM){N(SiMe3)2}(THF)] (R = 4-C6H4Me, 5a, 4-C6H4F, 5b and tBu, 5c) have given competitive enantioselectivities (up to 12%) when compared to current literature studies involving calcium. Bisimidazolines offer a significant advance over similar bisoxazoline ligands, by allowing a greater structural variance through a modular synthetic pathway.

Item Type:	Article
Date Type:	Publication
Status:	Published
Schools:	Chemistry
Subjects:	Q Science > QD Chemistry
Publisher:	Royal Society of Chemistry
ISSN:	1364-5447
Last Modified:	18 Oct 2022 12:24
URI:	https://orca.cardiff.ac.uk/id/eprint/9738

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