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Transfer hydrogenation reactions of photoactivatable N, N '-chelated ruthenium(II) arene complexes
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Betanzos-Lara, Soledad, Habtemariam, Abraha and Sadler, P. J. (2013) Transfer hydrogenation reactions of photoactivatable N, N '-chelated ruthenium(II) arene complexes. Mexican Chemical Society Journal, Volume 57 (Number 3). pp. 160-168. ISSN 1870-249X.
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Official URL: http://www.redalyc.org/revista.oa?id=475
Abstract
We show that the reaction of Ru-II arene chlorido complexes of the type
[(eta(6)-arene) Ru(N, N')Cl](+) arene = p-cymene (p-cym),
hexamethylbenzene (hmb), indane (ind), N, N' = bipyrimidine (bpm) and
1,10-phenanthroline (phen) with excess sodium formate generates a very
stable formate adduct through spontaneous hydrolysis of the Ru-Cl bond
at 310 K and pH* = 7.0. The formate adducts are also produced when Ru-II
arene pyridine complexes of the type [(eta(6)-arene) Ru(N, N')(Py)](2+)
(where Py = pyridine), are irradiated with UVA (lambda(irr) = 300-400
nm) or visible light (lambda(irr) = 400-660 nm) under the same
conditions. The Ru-II arene formato adducts do not catalyse the
reduction of acetone through transfer hydrogenation. However, all the
complexes (except complex 2 which contains phen as the chelating ligand)
can catalyse the regioselective reduction of NAD(+) in the presence of
formate (25 mol equiv) in aqueous solution to form 1,4-NADH. The
catalytic activity is dependent on the nature of the chelating ligand.
Most interestingly, the regioselective reduction of NAD(+) to 1,4-NADH
can be also specifically triggered by photoactivating a Ru-II arene Py
complex.
Item Type: | Journal Article | ||||
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Divisions: | Faculty of Science, Engineering and Medicine > Science > Chemistry | ||||
Journal or Publication Title: | Mexican Chemical Society Journal | ||||
Publisher: | Sociedad Quimica de Mexico | ||||
ISSN: | 1870-249X | ||||
Official Date: | 2013 | ||||
Dates: |
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Volume: | Volume 57 | ||||
Number: | Number 3 | ||||
Page Range: | pp. 160-168 | ||||
Status: | Peer Reviewed | ||||
Publication Status: | Published | ||||
Access rights to Published version: | Restricted or Subscription Access |
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