02433nas a2200241   4500008004100000022001400041245014400055210006900199260011700268300001200385490000800397520144700405653000801852653003401860653003801894653002601932653003101958653002201989653001102011100002702022700001802049856012402067       2009                        eng d  a0920-586100aRu(II)-Chiral (1R,2S)-(+)-cis-1-amino-2-indanol immobilized over SBA-15 for asymmetric transfer hydrogenation reaction of prochiral ketones0 aRuIIChiral 1R2Scis1amino2indanol immobilized over SBA15 for asym  aPO BOX 211, 1000 AE AMSTERDAM, NETHERLANDSbCatalysis Soc India; Petrotech Soc; Indo US Sci & Technol ForumcMAR  a161-1670 v1413 a<p>Mesoporous SBA-15 (Santa Barbara University at California) has been synthesized and functionalized with (4-chloromethyl)phenyltriethoxysilane, there after the surface silanols groups were passivated by dimethoxydimethylsilane (MeO(2)Me(2)Si) [Bz-SBA-15]. Further (1R,2S)-(+)-cis-1-amino-2-indanol [AIL] has been immobilized over functionalized SBA-15 (BzAIL-SBA-15). The heterogeneous catalysts were synthesized by complexation of BzAIL-SBA-15 by [RuCl(2)(benzene)](2) and [RuCl(2)(p-cymene)](2) in 2-propanol at reflux condition designated as Ru-Bn-BzAIL-SBA-15 (Ru-1) and Ru-Cy-BzAIL-SBA-15 (Ru-2). The synthesized materials have been characterized by small angle X-ray diffraction spectroscopy (SAXS), N(2) adsorption-desorption isotherms, Fourier Transformed-Infra-red (FT-IR) spectroscopy, Transmission Electron Microscopy (TEM), intensively Coupled plasma atomic emission spectroscopy (ICP-AES), Diffuse reflectance UV-vis and (13)C CP MAS NMR analysis. Further the synthesized and characterized materials (Ru-1 and Ru-2) have been successfully applied in the asymmetric transfer hydrogenation (ATH) reaction of simple prochiral ketones, which gave a yield of 56% and 18% and enantiomeric excess (ee) values of 62% and 77% for Ru-1 and Ru-2, respectively, after 1 h for acetophenone. The reusability studies showed approximately the same enantiomeric excess value at lower conversions. (c) 2008 Elsevier B.V. All rights reserved.</p>10a(1R10a2S)-(+)-Cis-1-amino-2-indanol10aAsymmetric transfer hydrogenation10aChiral amino alcohols10aMesoporous molecular sieve10aProchiral ketones10aSBA-151 aParambadath, Surendran1 aSingh, A., P.  uhttps://library.ncl.res.in/content/ruii-chiral-1r2s-cis-1-amino-2-indanol-immobilized-over-sba-15-asymmetric-transfer-001610nas a2200253   4500008004100000022001400041245015100055210006900206260000800275300001000283490000800293520072400301653002801025653001401053653002001067653002701087653001301114653003001127100001701157700001801174700001801192700001801210856012801228       2018                        eng d  a1566-736700aRu(II)-functionalized SBA-15 as highly chemoselective, acid free and sustainable heterogeneous catalyst for acetalization of aldehydes and ketones0 aRuIIfunctionalized SBA15 as highly chemoselective acid free and   cJAN  a62-660 v1043 a<p>Combining electron deficient Ru(II) coordination sites with organofunctionalized SBA-15, (L)Ru(Il)@SBA-15, result in a mild, neutral, water scavenger free and chemo-selective acetalization catalyst for cyclic/acyclic acetals. Vacant coordination sites of ruthenium in (L)Ru(II)@SBA-15 activates protecting groups as well as reactants simultaneously and restricts the reverse acetalization reaction. Synthesized (L)Ru(Il)@SBA-15 catalyst has been thoroughly characterized and act as competitive catalyst compared to conventional acid catalysts. (L) RuaD@SBA-15 performs high catalytic activity as well as selectivity within 20 min with high TOF. The catalyst can be recycled and reaction parameters are optimized.</p>10aAcetalization reactions10aAcid free10achemo-selective10aheterogeneous catalyst10aReusable10aRu(II) immobilized SBA-151 aLazar, Anish1 aBetsy, K., J.1 aVinod, C., P.1 aSingh, A., P.  uhttps://library.ncl.res.in/content/ruii-functionalized-sba-15-highly-chemoselective-acid-free-and-sustainable-heterogeneous