Novel cyclohexyl‐based aminophosphine ligands and use of their Ru(II) complexes in transfer hydrogenation of ketones. (15th January 2014)

• Record Type: Journal Article
• Authors: Kayan, Cezmi; Meriç, Nermin; Aydemir, Murat; Ocak, Yusuf Selim; Baysal, Ak𝚤n; Temel, Hamdi
• Is Part Of: Applied organometallic chemistry. Volume 28:Number 2(2014:Feb.)
• Page Start: 127
• Page End: 133
• Publication Date: 2014-01-15
• Subjects: Organometallic chemistry -- Periodicals; Organometallic compounds -- Periodicals; 547.05
• DOI: 10.1002/aoc.3096
• Languages: English
• ISSNs: 0268-2605

Abstract

<abstract abstract-type="main"> <title> <x xml:space="preserve">Abstract</x> </title> <p>Two new aminophosphines – furfuryl‐(<italic>N</italic>‐dicyclohexylphosphino)amine, [Cy<sub>2</sub>PNHCH<sub>2</sub>–C<sub>4</sub>H<sub>3</sub>O] (<bold>1</bold>) and thiophene‐(<italic>N</italic>‐dicyclohexylphosphino)amine, [Cy<sub>2</sub>PNHCH<sub>2</sub>–C<sub>4</sub>H<sub>3</sub>S] (<bold>2</bold>) – were prepared by the reaction of chlorodicyclohexylphosphine with furfurylamine and thiophene‐2‐methylamine. Reaction of the aminophosphines with [Ru(η<sup>6</sup>‐<italic>p</italic>‐cymene)(μ‐Cl)Cl]<sub>2</sub> or [Ru(η<sup>6</sup>‐benzene)(μ‐Cl)Cl]<sub>2</sub> gave corresponding complexes [Ru(Cy<sub>2</sub>PNHCH<sub>2</sub>–C<sub>4</sub>H<sub>3</sub>O)(η<sup>6</sup>‐<italic>p</italic>‐cymene)Cl<sub>2</sub>] (<bold>1a</bold>), [Ru(Cy<sub>2</sub>PNHCH<sub>2</sub>–C<sub>4</sub>H<sub>3</sub>O)(η<sup>6</sup>‐benzene)Cl<sub>2</sub>] (<bold>1b</bold>), [Ru(Cy<sub>2</sub>PNHCH<sub>2</sub>–C<sub>4</sub>H<sub>3</sub>S)(η<sup>6</sup>‐<italic>p</italic>‐cymene)Cl<sub>2</sub>] (<bold>2a</bold>) and [Ru(Cy<sub>2</sub>PNHCH<sub>2</sub>–C<sub>4</sub>H<sub>3</sub>S)(η<sup>6</sup>‐benzene)Cl<sub>2</sub>] (<bold>2b</bold>), respectively, which are suitable catalyst precursors for the <named-content content-type="reactionType" xlink:type="simple" xmlns:xlink="http://www.w3.org/1999/xlink">transfer hydrogenation</named-content> of ketones. In particular, [Ru(Cy<sub>2</sub>PNHCH<sub>2</sub>–C<sub>4</sub>H<sub>3</sub>S)(η<sup>6</sup>‐benzene)Cl<sub>2</sub>] acts as a good catalyst, giving the corresponding alcohols in 98–99% yield in 30 min at 82 °C (up to time of flight ≤ 588 h<sup>−1</sup>). Copyright © 2014 John Wiley & Sons, Ltd.</p> </abstract>