Journal
ORGANOMETALLICS
Volume 31, Issue 3, Pages 1133-1142Publisher
AMER CHEMICAL SOC
DOI: 10.1021/om201189r
Keywords
-
Categories
Funding
- Ministero dell'Universita e della Ricerca (MIUR)
- Regione Friuli Venezia Giulia
Ask authors/readers for more resources
The easily accessible complexes [MCl2(dppf)(ampy)] (M = Ru (cis-1), Os (trans-2); dppf = 1,1'-bis(diphenylphosphino)ferrocene; ampy = 2-aminomethylpyridine) in the presence of base (NaOiPr, KOtBu) are efficient catalysts for several reactions involving carbonyl compounds and alcohols. The derivatives 1 and 2 catalyze the selective transfer hydrogenation of aldehydes and ketones to alcohols with 2-propanol using 0.1-0.005 mol % of catalyst at 82 degrees C with TOF values up to 3.0 x 10(5) h(-1). These compounds (0.1-0.02 mol %) promote the hydrogenation of aldehydes and ketones in EtOH or a MeOH/EtOH mixture at 30-90 degrees C (5 atm of H-2) and the acceptorless dehydrogenation of alcohols to ketones in tBuOH at 130-145 degrees C (0.4 mol %). Complexes 1 and 2 (0.5 mol %) catalyze the racemization of chiral alcohols at 70 degrees C in 2-propanol and the isomerization of allylic alcohols to ketones in tBuOH at 70-120 degrees C (1 mol %). In addition, 1 and 2 (0.5 mol %) promote the alpha alkylation of alpha-tetralone with primary alcohols (EtOH, nPrOH, and nBuOH) at 120 degrees C in a tBuOH/toluene mixture (1/2 v/v). Complex 2 is easily obtained in 93% yield from [OsCl2(PPh3)(3)], dppf, and ampy in toluene.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available