01706nas a2200217 4500008004100000022001400041245013400055210006900189260007300258300001200331490000800343520084800351653002901199653003401228653003301262653001801295653001601313100001801329700001801347856012301365 2012 eng d a0920-586100aBinapthyl Schiff base diamine complex covalently bonded to modified SBA-15: synthesis, characterization and catalytic application0 aBinapthyl Schiff base diamine complex covalently bonded to modif aPO BOX 211, 1000 AE AMSTERDAM, NETHERLANDSbELSEVIER SCIENCE BVcDEC a184-1880 v1983 a

Protected mesoporous SBA-15 phase was synthesized by grafting the complex Chloro (S,S)(-)[N-3-tert-butyl-5-chloromethyl salicylidene]-N'-[3',5'-di tert-butyl salicylidene] 1,1'-binapthyl-2,2'-diamine manganese(III) through the reactive 3-aminopropyl trimethoxysilane(3-APTMS) group. The surface properties of the functionalized catalyst were analyzed by a series of characterization techniques like elemental analysis, XRD, N-2 sorption measurement isotherm, FT-IR, XPS, and solid state C-13 NMR. The screening of the catalyst Mn(III)-L-SBA-15 and neat Mn(III)-L complexes was done for the oxidation reaction of thioanisole (methyl phenyl sulfide) using TBHP as an oxidant. Mn(III)-L-SBA-15 catalyst shows higher activities and exhibit enantiomeric excess comparable to homogeneous catalyst. (C) 2012 Elsevier B. V. All rights reserved.

10a-OH protected NH2-SBA-1510aBinaphthyl Schiff base ligand10aOrdered mesoporous materials10aSulfoxidation10aThioanisole1 aSharma, Priti1 aSingh, A., P. uhttps://library.ncl.res.in/content/binapthyl-schiff-base-diamine-complex-covalently-bonded-modified-sba-15-synthesis-002341nas a2200217 4500008004100000022001400041245014400055210006900199260007300268300001200341490000800353520149300361653002201854653002301876653001901899653002801918100001801946700001701964700001801981856012401999 2012 eng d a0926-860X00aMn(III) based binapthyl schiff base complex hetrogenized over organo-modified SBA-15: synthesis, characterization and catalytic application0 aMnIII based binapthyl schiff base complex hetrogenized over orga aPO BOX 211, 1000 AE AMSTERDAM, NETHERLANDSbELSEVIER SCIENCE BVcOCT a101-1100 v4393 a

A heterogenized organocatalyst was synthesized by the covalent anchoring; of the complex chloro (S,S)(-)[N-3-tert-butyl-5-chloromethyl salicylidene]-N'-[3',5'-di-tert-butyl salicylidene] 1,1'-binapthyl-2,2'-diamine manganese(III) over modified mesoporous surface of SBA-15 through the reactive 3-aminopropyl trimethoxysilane (3-APTMS) group. The surface properties of the functionalized catalyst were analyzed by a series of characterization techniques such as elemental analysis, XRD, N-2 sorption measurement isotherm, FT-IR, TGA-DTA, XPS, and solid state C-13 NMR. The XRD and N-2 sorption measurement, UV reflectance and CP MAS NMR spectroscopy (C-13 and Si-29) of the catalyst confirmed the structural integrity of the mesoporous hosts and the spectroscopic characterization technique proved the successful anchoring of the metal complex over the modified mesoporous support. The screening of the catalyst Mn(III)-L-SBA-15 and neat Mn(III)-L complexes was done in the oxidation reaction of thioanisole (methyl phenyl sulfide) by using TBHP as an oxidant. Mn(III)-L-SBA-15 catalyst shows higher activities and turnover number (TON) and exhibit enhanced enantiomeric excess comparable to homogeneous catalyst [Mn(III)-L]. [Mn(III)-L-SBA-15] catalyst was found more active than homogeneous catalyst [Mn(III)-L]; Moreover bulkier alkene like 1,2-dihydronapthalene was also efficiently epoxidised with the synthesized supported catalyst. (C) 2012 Elsevier B.V. All rights reserved.

10aBinaphthyl ligand10aChiral Schiff-base10aImmobilization10aPost grafting synthesis1 aSharma, Priti1 aLazar, Anish1 aSingh, A., P. uhttps://library.ncl.res.in/content/mniii-based-binapthyl-schiff-base-complex-hetrogenized-over-organo-modified-sba-15-002442nas 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

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 & 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.

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

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.

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

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 & DTA, solid state C-13, Si-29 NMR spectra, FT-IR, XPS, DRS UV-visible, SEM and TEM. XRD & 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 (> 99%) and selectivity (100%). The anchored solid catalyst can be recycled efficiently and reused upto five times without major loss in reactivity.

1 aSharma, Priti1 aSingh, A., P. uhttps://library.ncl.res.in/content/covalently-anchored-246-triallyloxy-135-triazine-pdii-complex-over-modified-surface-sba-15-002523nas a2200157 4500008004100000022001400041245014800055210006900203260011000272300001400382490000600396520179500402100001802197700001802215856013202233 2014 eng d a2044-475300aPhosphine free SBA-15-EDTA-Pd highly active recyclable catalyst: synthesis characterization and application for suzuki and sonogashira reaction0 aPhosphine free SBA15EDTAPd highly active recyclable catalyst syn aTHOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLANDbROYAL SOC CHEMISTRYcAUG a2978-29890 v43 a

Phosphine obstructed highly efficient and reusable SBA-15-EDTA-Pd(11) has been synthesized by anchoring a Pd-EDTA complex over the surface of organo-functionalized SBA-15. The physiochemical properties of the organo-functionalized catalyst were analyzed by elemental analysis, ICP-OES, XRD, N-2 sorption measurement isotherms, TGA and DTA, solid state C-13, Si-29 NMR spectroscopy FT-IR, XPS DRS UV-visible, SEM and TEM. The XRD and N-2 sorption analyses of the synthesized catalyst confirm that the ordered mesoporous channel structure was retained even after the multistep synthetic procedures. The (100), (110) and (200) reflections in SBA-15 provide a good structural stability, an the existence of a long range order and high pore wall thickness. The TGA-DTA results reveal that the thermal stability of the synthesized catalyst SBA-15-EDTA-Pd(11) was maintained at higher temperature. The organic moieties anchored over the surface of the SBA-15 and inside the pore wall were demonstrated by solid state C-13 NMR and FT-IR spectroscopy. Further, solid state Si-29 NMR spectroscopy provides information about the degree of functionalization of the surface silanol groups, of the SBA-15 with organic moieties. The electronic environment and oxidation state of the Pd metal in the SBA-15-EDTA-Pd(11) were monitored by XPS, and DRS UV-visible techniques. Moreover, the morphologies and topographic information of the synthesized catalyst were confirmed by SEM and TEM spectroscopy. The synthesized catalyst SBA-15-EDTA-Pd(11) was screened for the Suzuki and Sonogashira coupling reactions and shows a higher catalytic activity with higher TON (turn over number). The anchored solid catalyst can be recycled efficiently and reused five times, without a major loss in the reactivity.

1 aSharma, Priti1 aSingh, A., P. uhttps://library.ncl.res.in/content/phosphine-free-sba-15-edta-pd-highly-active-recyclable-catalyst-synthesis-characterization-002724nas a2200157 4500008004100000022001400041245019800055210006900253260011000322300001600432490000600448520195100454100001802405700001802423856012502441 2014 eng d a2046-206900aSynthesis of a recyclable and efficient Pd(II) 4-(2-pyridyl)-1,2,3-triazole complex over a solid periodic mesoporous organosilica support by ``click reactions'' for the stille coupling reaction0 aSynthesis of a recyclable and efficient PdII 42pyridyl123triazol aTHOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLANDbROYAL SOC CHEMISTRYcAUG a43070-430790 v43 a

A highly efficient, reusable B-PMO-TZ-Pd(II) catalyst was synthesized by anchoring 4-(2-pyridyl)-4-(2-pyridyl)-1,2,3-triazole ligand over the surface of an organo-functionalized benzene support containing periodic mesoporous organosilica (B-PMO) via ``click reaction'' and the subsequent complexation with PdCl2. B-PMO materials with uniform hexagonal arrangements were prepared using C-16 alkyl trimethyl ammonium bromide [CTAB] surfactant under basic conditions. The physiochemical properties of the functionalised catalyst were analysed by elemental analysis, ICP-OES, XRD, N-2 sorption, TGA & DTA, solid state C-13, Si-29 NMR spectra, FT-IR, XPS, UV-vis, SEM and TEM. XRD and N-2 sorption revealed the morphological and textural properties of the synthesized catalyst, confirming that ordered mesoporous channel structure was retained even after the multistep synthetic procedure. The (100), (110) and (200) reflections in B-PMO are evidence of its good structural stability and the existence of long range order. The TGA-DTA results reveal that the synthesized catalyst B-PMO-TZ-Pd(II) was thermally stable, even at high temperature. The organic moieties anchored over the surface of B-PMO were demonstrated by solid state C-13 NMR and FT-IR spectroscopy. Solid state Si-29 NMR spectroscopy provides information about the degree of functionalization of the surface silanol group. The electronic environment and oxidation state of Pd in B-PMO-TZ-Pd(II) were monitored by XPS and UV-visible techniques. Moreover, the morphologies and topographic information of the synthesized B-PMO-TZ-Pd(II) catalyst were confirmed by SEM and TEM analyses. The catalytic properties of the catalyst for the Stille coupling reaction were screened, and higher catalytic activities with high TONs were observed. The anchored solid B-PMO-TZ-Pd(II) catalyst can be recycled efficiently and reused several (four) times without a major loss in reactivity.

1 aSharma, Priti1 aSingh, A., P. uhttps://library.ncl.res.in/content/synthesis-recyclable-and-efficient-pdii-4-2-pyridyl-123-triazole-complex-over-solid-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

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.

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-135-102110nas a2200253 4500008004100000022001400041245015600055210006900211260008600280300001600366490000700382520118400389653001501573653000801588653000901596653001001605653001701615653002201632100002201654700001801676700002201694700001801716856012201734 2016 eng d a1944-399400aSynthesis and characterization of nanoporous silica SBA-15 diaminocyclohexane and its application in removal of Cu(II) and Ni(II) from aqueous solution0 aSynthesis and characterization of nanoporous silica SBA15 diamin a530 WALNUT STREET, STE 850, PHILADELPHIA, PA 19106 USAbTAYLOR & FRANCIS INCcJUL a15397-154090 v573 a

A new nanoporous 1,2-diaminocyclohexane-functionalized SBA-15 (Dach@SBA-15) silica sorbent was prepared. The structure and physicochemical properties of the material were characterized by elemental analysis, X-ray diffraction, transmission electron microscopy (TEM), scanning electron microscopy, FT-IR spectroscopy, nitrogen adsorption-desorption isotherms and thermogravimetric analysis. TEM image clearly showed the sheet-like structure of Dach@SBA-15. The organic functional groups were successfully grafted onto the SBA-15 surface and the ordering of the support was not affected by the chemical modification. The Dach@SBA-15was used as a sorbent for removal of Cu(II) and Ni(II) from aqueous solution. Experimental parameters like effect of pH, contact time and metal ion concentration were studied and optimized. The adsorption isotherm data fitted well to Langmuir isotherm model and the monolayer adsorption capacity values for Cu(II) was 90.09 and for Ni (II) was 84.03 mg/g at 303 K. The experimental kinetic data fitted very well to the pseudosecond- order model. The Dach@SBA-15 could be used as a sorbent for removal of Cu(II) and Ni(II) from aqueous medium.

10aAdsorption10aBET10aFAAS10aFT-IR10aHeavy metals10aNanoporous silica1 aSreenu, Bhogineni1 aSharma, Priti1 aSeshaiah, Kalluru1 aSingh, A., P. uhttps://library.ncl.res.in/content/synthesis-and-characterization-nanoporous-silica-sba-15-diaminocyclohexane-and-its01932nas a2200193 4500008004100000022001400041245015000055210006900205260011000274300001400384490000600398520112200404100001501526700001401541700001701555700001801572700001801590856013001608 2016 eng d a1759-966000aSynthesis of new hybrid sorbent 2-mercaptobenzaldehyde SBA-15 and its application in solid phase extraction of Cd(II) from water and food samples0 aSynthesis of new hybrid sorbent 2mercaptobenzaldehyde SBA15 and  aTHOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLANDbROYAL SOC CHEMISTRYcMAR a2947-29540 v83 a

In this paper, a new mesoporous hybrid material was fabricated by anchoring 2-mercaptobenzaldehyde (2MB) onto the surface of SBA-15. The adsorbent (2MB-SBA-15) was characterized by Fourier transform infrared spectroscopy (FT-IR), X-ray diffraction (XRD), transmission electron microscopy (TEM), scanning electron microscopy (SEM), nitrogen adsorption-desorption isotherm measurements and thermogravimetric analysis (TGA) and applied as a sorbent in the preconcentration of Cd(II) in water samples and food samples. The effect of various analytical parameters such as pH, dose of sorbent, amount of eluent, sample flow rate and interfering ions was investigated. The preconcentration capacity of the prepared material under optimized conditions for Cd(II) was 0.94 +/- 0.01 mmol g(-1). The Cd collected onto the sorbent was eluted out with 10 mL of 1 M HNO3 and determined by AAS. The LOD, LOQ and preconcentration factor of the present method were found to be 6.93 x 10(-6), 1.21 x 10(-5) mM and 100, respectively. The relative standard deviation for four preconcentration experiments was found to be <= 5%.

1 aSreenu, B.1 aImran, K.1 aSeshaiah, K.1 aSharma, Priti1 aSingh, A., P. uhttps://library.ncl.res.in/content/synthesis-new-hybrid-sorbent-2-mercaptobenzaldehyde-sba-15-and-its-application-solid-phase01316nas a2200181 4500008004100000245011300041210006900154260000800223300001200231490000700243520066800250100001900918700001800937700001800955700001800973700001900991856012401010 2017 eng d00aHighly active recyclable SBA-15-EDTA-Pd catalyst for Mizoroki-Heck, Stille and Kumada C-C coupling reactions0 aHighly active recyclable SBA15EDTAPd catalyst for MizorokiHeck S cAUG a837-8460 v243 aHighly efficient SBA-15-EDTA-Pd(11) heterogeneous catalyst was synthesized by covalent anchoring Pd-EDTA complex over organo-modified surface of SBA-15. SBA-15-EDTA-Pd(11) catalyst was found to exhibit excellent catalytic activity in appreciable yield for Heck, Stille and Kumada cross-coupling reactions. Catalytic system exhibited excellent activity for completion of reaction, isolation, Pd loading (0.87 mmol%) and yields of products as compared to earlier reported heterogeneous supported Pd catalysts. Covalently anchored heterogeneous SBA-15-EDTA-Pd(11) catalyst can be recycled for more than five times without noticeable loss in activity and selectivity.1 aRathod, Jayant1 aSharma, Priti1 aPandey, Punam1 aSingh, A., P.1 aKumar, Pradeep uhttps://library.ncl.res.in/content/highly-active-recyclable-sba-15-edta-pd-catalyst-mizoroki-heck-stille-and-kumada-c-c01812nas a2200181 4500008004100000245023100041210006900272260000800341300001400349490000600363520104600369100001801415700001901433700001801452700001901470700001701489856012401506 2018 eng d00aSynthesis of heterogeneous Ru(II)-1,2,3-triazole catalyst supported over SBA-15: application to the hydrogen transfer reaction and unusual highly selective 1,4-disubstituted triazole formation via multicomponent click reaction0 aSynthesis of heterogeneous RuII123triazole catalyst supported ov cJUL a3246-32590 v83 aIn the present study, we demonstrate a simple and efficient method for ligand formation and covalent anchoring to a heterogeneous support via click reaction. The complex tris(triphenylphosphine) ruthenium(II) dichloride [RuCl2(PPh3)(3)] anchored over the click modified ligand of SBA-15 forms a new highly efficient heterogeneous SBA-15-Tz-Ru(II) TPP catalyst. Solid state C-13, Si-29, and P-31 CP-MAS NMR spectra provide evidence for the formation of the heterogeneous catalyst. SBA-15-Tz-Ru(II) TPP catalyst was screened for the multicomponent click cycloaddition reaction in water medium as a green solvent and it exhibited unusual and excellent selectivity for the formation of 1,4-disubstituted triazole product under mild reaction condition. In addition, SBA-15-Tz-Ru(II) TPP catalyst also catalyzed the hydrogen transfer reaction of various carbonyl compounds with excellent catalytic activity to give the corresponding alcohols. The heterogeneous catalyst can be recycled and reused several times (five) without a loss in reactivity.1 aSharma, Priti1 aRathod, Jayant1 aSingh, A., P.1 aKumar, Pradeep1 aSasson, Yoel uhttps://library.ncl.res.in/content/synthesis-heterogeneous-ruii-123-triazole-catalyst-supported-over-sba-15-application