کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1327396 | 977480 | 2009 | 5 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: New active ruthenium(II) complexes based N3,N3′-bis(diphenylphosphino)-2,2′-bipyridine-3,3′-diamine and P,P′-diphenylphosphinous acid-P,P′-[2,2′-bipyridine]-3,3′-diyl ester ligands for transfer hydrogenation of aromatic ketones by propan-2-ol New active ruthenium(II) complexes based N3,N3′-bis(diphenylphosphino)-2,2′-bipyridine-3,3′-diamine and P,P′-diphenylphosphinous acid-P,P′-[2,2′-bipyridine]-3,3′-diyl ester ligands for transfer hydrogenation of aromatic ketones by propan-2-ol](/preview/png/1327396.png)
The dimeric starting material [Ru(η6-p-cymene)(μ-Cl)Cl]2 reacts with N3,N3′-bis(diphenylphosphino)-2,2′-bipyridine-3,3′-diamine, 1 and P,P′-diphenylphosphinous acid-P,P′-[2,2′-bipyridine]-3,3′-diyl ester, 2 ligands to afford bridged dinuclear complexes [C10H6N2{NHPPh2-Ru(η6-p-cymene)Cl2}2], 3 and [C10H6N2{OPPh2-Ru(η6-p-cymene)Cl2}2], 4 in quantitative yields. These bis(aminophosphine) and bis(phosphinite) based Ru(II) complexes serve as active catalyst precursors for the transfer hydrogenation of acetophenone derivatives in 2-propanol and especially 4 acts as a good catalyst, giving the corresponding alcohols in 99% yield in 20 min (TOF ⩽ 280 h−1).
Two new bridged dinuclear complexes [C10H6N2{NHPPh2-Ru(η6-p-cymene)Cl2}2], 3 and [C10H6N2{OPPh2-Ru(η6-p-cymene)Cl2}2], 4 were prepared and characterized. The catalytic behavior of the Ru(II) complexes were investigated in the transfer hydrogenation of acetophenone derivatives in 2-propanol.Figure optionsDownload as PowerPoint slide
Journal: Journal of Organometallic Chemistry - Volume 694, Issue 16, 15 July 2009, Pages 2488–2492