02442nas a2200241   4500008004100000022001400041245015000055210006900205260007300274300001200347490000800359520152700367653000801894653003401902653002901936653003501965653001502000653001602015100001702031700001802048700001802066856011602084       2013                        eng d  a1387-181100aChiral (VO)-O-IV-Sal-Indanol complex over modified SBA-15: an efficient, reusable enantioselective catalyst for asymmetric sulfoxidation reaction0 aChiral VOOIVSalIndanol complex over modified SBA15 an efficient   aPO BOX 211, 1000 AE AMSTERDAM, NETHERLANDSbELSEVIER SCIENCE BVcAPR  a331-3390 v1703 a<p>A reusable, mesoporous, heterogeneous vanadium complex, (VO)-O-IV-Sal-Ind-SBA-15 has been synthesized first time from (1R,2S)-(+)-Cis-1-amino-2-indanol for enantioselective sulfoxidation reaction. The physico-chemical properties of the functionalized catalyst were analyzed by a series of characterization techniques like XRD, N-2 sorption measurement isotherm, TEM, FT-IR, XPS, EPR, DRS UV-Visible, ICP-OES and solid &amp; liquid state C-13, Si-29 and V-51 NMR spectroscopy. Powder X-ray diffraction patterns, TEM and N-2 physisorption analysis confirmed the retention of mesoporous structure after various modifications. Solid-state NMR (C-13 CP-MAS NMR, Si-29 MAS NMR) and FT-IR analysis certified the integrity of organo-catalyst residing inside the pore channels of the mesoporous support. Further, XPS, EPR, V-51 NMR and DRS UV-Visible analyses help to find out the oxidation state and coordination environment of vanadium in (VO)-O-IV-Sal-Ind-SBA-15. Catalytic evaluation in asymmetric sulfoxidation reaction of sulfides indicated that VOIV-Sal-Ind-SBA-15 exhibited higher catalytic activity, stability, reusability and comparable enantioselectivity than SBA-15, PrNH2-SBA-15, neat (VO)-O-IV-Sal-Indanol complex and without catalyst. The effect of different catalysts, temperature, solvents and substrates on sulfoxidation reaction were examined in order to optimize the conversion and enantioselectivity of thioanisoles to sulfoxides. Crown Copyright (C) 2012 Published by Elsevier Inc. All rights reserved.</p>10a(1R10a2S)-(+)-Cis-1-amino-2-indanol10aAsymmetric sulfoxidation10aHeterogeneous vanadium complex10aMesoporous10aThioanisole1 aLazar, Anish1 aSharma, Priti1 aSingh, A., P.  uhttps://library.ncl.res.in/content/chiral-vo-o-iv-sal-indanol-complex-over-modified-sba-15-efficient-reusable-001620nas a2200301   4500008004100000022001400041245011500055210006900170260007300239300001200312490000800324520060500332653001200937653000900949653001100958653002600969653001700995100002301012700001801035700001901053700001801072700001801090700001701108700001801125700002501143700001801168856013201186       2014                        eng d  a0926-860X00aClay encapsulated Cu(OH)(x) promoted homocoupling of arylboronic acids: an efficient and eco-friendly protocol0 aClay encapsulated CuOHx promoted homocoupling of arylboronic aci  aPO BOX 211, 1000 AE AMSTERDAM, NETHERLANDSbELSEVIER SCIENCE BVcJAN  a232-2380 v4703 a<p>Cu(OH)(x) has been encapsulated over montmorillonite-KSF by simple ologomeric deposition strategy. The resulting catalyst has been employed for selective homocoupling of arylboronic acids under ambient conditions without requirement of any ligand or base. This catalyst is easy to recover and shows excellent reusability without losing its activity. Techniques like XRD, SEM, TPR, IR, BET surface area measurement and XPS were used to characterize the catalyst. The present method promises for the simple and clean homocoupling of arylboronic acids. (C) 2013 Elsevier B.V. All rights reserved.</p>10aBiaryls10aclay10aCopper10aHeterogenous catalyst10aHomocoupling1 aDar, Bashir, Ahmad1 aSingh, Snehil1 aPandey, Nalini1 aSingh, A., P.1 aSharma, Priti1 aLazar, Anish1 aSharma, Meena1 aVishwakarma, Ram, A.1 aSingh, Baldev  uhttps://library.ncl.res.in/content/clay-encapsulated-cuohx-promoted-homocoupling-arylboronic-acids-efficient-and-eco-friendly-001916nas a2200157   4500008004100000022001400041245015500055210006900210260011000279300001600389490000600405520117900411100001801590700001801608856013201626       2014                        eng d  a2046-206900aCovalently anchored 2,4,6-triallyloxy-1,3,5-triazine Pd(II) complex over a modified surface of SBA-15: catalytic application in hydrogenation reaction0 aCovalently anchored 246triallyloxy135triazine PdII complex over   aTHOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLANDbROYAL SOC CHEMISTRYcOCT  a58467-584750 v43 a<p>Highly efficient and reusable SBA-15-TAT-Pd(II) has been synthesized by anchoring a 2,4,6-triallyloxy-1,3,5-triazine (TAT) complex over the organo-functionalized surface of SBA-15. The physiochemical properties of the organo-functionalized catalyst were analyzed by elemental analysis, ICP-OES, XRD, N-2 sorption measurement isotherm, TGA &amp; DTA, solid state C-13, Si-29 NMR spectra, FT-IR, XPS, DRS UV-visible, SEM and TEM. XRD &amp; N-2 sorption were analyzed to find out the textural properties of the synthesized catalyst and confirm that an ordered mesoporous channel structure was retained even after the multistep synthetic procedures. The electronic environment and oxidation state of Pd in SBA-15-TAT-Pd(II) were monitored by XPS and DRS UV-visible techniques. The catalytic activity of the synthesized catalyst SBA-15-TAT-Pd(II) was screened for hydrogenation reactions and shows higher catalytic activity with good turnover numbers (TON) under optimized experimental conditions with maximum conversion (&gt; 99%) and selectivity (100%). The anchored solid catalyst can be recycled efficiently and reused upto five times without major loss in reactivity.</p>1 aSharma, Priti1 aSingh, A., P.  uhttps://library.ncl.res.in/content/covalently-anchored-246-triallyloxy-135-triazine-pdii-complex-over-modified-surface-sba-15-001805nas a2200253   4500008004100000022001400041245022800055210006900283260007300352300001000425490000700435520080500442653000901247653001101256653003101267653001601298653001101314100002001325700001801345700001801363700002101381700001901402856013001421       2015                        eng d  a1566-736700aCarbon-carbon bond forming reactions: application of covalently anchored 2,4,6-triallyloxy-1,3,5-triazine (TAT) Pd(II) complex over modified surface of SBA-15 to Heck, Suzuki, Sonogashira and Hiyama cross coupling reactions0 aCarboncarbon bond forming reactions application of covalently an  aPO BOX 211, 1000 AE AMSTERDAM, NETHERLANDSbELSEVIER SCIENCE BVcSEP  a11-150 v693 a<p>A highly active SBA-15-TAT-Pd(II) catalyst was synthesized from organofunctionalized SBA-15 and 2,4,6-triallyloxy-1,3,5-triazine. The catalyst was employed in carrying out Heck, ``copper-free'' Sonogashira, Suzuki and Hiyama cross coupling reactions. Under the optimized conditions the catalyst displays excellent catalytic activity in delivering the desired products in good to excellent yields. The catalytic system exhibited superior activity regarding the time taken for the completion of reaction, isolation, Pd loading (0.62 mmol%) and yields of products as compared to the earlier reported heterogeneous SBA-15 anchored Pd catalysts. The catalyst could be recycled and reused for five times without any appreciable loss of catalytic activity. (C) 2015 Elsevier B.V. All rights reserved.</p>10aHeck10aHiyama10aSBA-15-TAT-Pd(II) catalyst10aSonogashira10aSuzuki1 aSingh, Chandani1 aJawade, Kiran1 aSharma, Priti1 aSingh, Anand, P.1 aKumar, Pradeep  uhttps://library.ncl.res.in/content/carbon-carbon-bond-forming-reactions-application-covalently-anchored-246-triallyloxy-135-1