Backbone-functionalised ruthenium diphosphine complexes for catalytic upgrading of ethanol and methanol to iso-butanol †

Sama, Folasade J., Doyle, Rachel A., Kariuki, Benson M. ORCID: https://orcid.org/0000-0002-8658-3897, Pridmore, Natalie E., Sparkes, Hazel A., Wingad, Richard L. and Wass, Duncan F. ORCID: https://orcid.org/0000-0002-0356-7067 2024. Backbone-functionalised ruthenium diphosphine complexes for catalytic upgrading of ethanol and methanol to iso-butanol †. Dalton Transactions 10.1039/d4dt00561a

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Abstract

Efficient catalysts for Guerbet-type ethanol/methanol upgrading to iso-butanol have been developed via Michael addition of a variety of amines to ruthenium-coordinated dppen (1,1-bis(diphenylphosphino)ethylene). All catalysts produce over 50% iso-butanol yield with >90% selectivity in 2 h with catalyst 1 showing the best activity (74% yield after this time). The selectivity and turnover number approach 100% and 1000 respectively using catalyst 6. The presence of uncoordinated functionalised donor groups in these complexes results in a more stable catalyst compared to unfunctionalised analogues.

Item Type:	Article
Date Type:	Published Online
Status:	In Press
Schools:	Chemistry
Additional Information:	License information from Publisher: LICENSE 1: URL: http://creativecommons.org/licenses/by/3.0/, Start Date: 2024-04-05
Publisher:	Royal Society of Chemistry
ISSN:	1477-9226
Date of First Compliant Deposit:	24 April 2024
Date of Acceptance:	1 April 2024
Last Modified:	24 Apr 2024 09:30
URI:	https://orca.cardiff.ac.uk/id/eprint/168266

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