01087nas a2200217   4500008004100000022001400041245011000055210006900165260007500234300001400309520025700323653001500580653002300595653001000618653001900628653001200647100003000659700002100689700002900710856013000739       2006                        eng d  a0936-521400aSynthesis of beta-amino alcohols from aromatic amines and alkylene carbonates using Na-Y zeolite catalyst0 aSynthesis of betaamino alcohols from aromatic amines and alkylen  aRUDIGERSTR 14, D-70469 STUTTGART, GERMANYbGEORG THIEME VERLAG KGcJUN  a1374-13783 a<p>A simple, efficient, and environmentally benign methodology for the synthesis of beta-amino alcohols from aromatic amines and alkylene carbonates in the presence of the highly active and reusable solid base catalyst Na-Y zeolite is demonstrated.</p>10aAlkylation10aalkylene carbonate10aAmine10aAmino alcohols10azeolite1 aShivarkar, Anandkumar, B.1 aGupte, Sunil, P.1 aChaudhari, Raghunath, V.  uhttps://library.ncl.res.in/content/synthesis-beta-amino-alcohols-aromatic-amines-and-alkylene-carbonates-using-na-y-zeolite-001244nas a2200265   4500008004100000022001400041245007100055210006700126260008600193300001200279490000700291520036600298653000600664653001600670653002000686653001400706653001800720100002500738700002100763700002500784700002000809700002100829700002900850856009900879       2008                        eng d  a0039-791100aHighly efficient sulfimidation of 1,3-dithianes by Cu(I) complexes0 aHighly efficient sulfimidation of 13dithianes by CuI complexes  a325 CHESTNUT ST, SUITE 800, PHILADELPHIA, PA 19106 USAbTAYLOR & FRANCIS INCcFEB  a619-6250 v383 a<p>A series of four Cu(I) complexes were tested for sulfimidation of 1,3-dithianes in the presence of [N-(p-tolysulfonyl)imino]phenyliodinane (PhI = NTs) as the nitrene-transfer agent. Cu(TMPhen)(PPh3)Br is an efficient catalyst with more than 90% yield of the corresponding product with less reaction time as compared to the literature copper(I) complexes.</p>10a110a3-dithianes10aCu(I) complexes10aPhI = NTs10asulfimidation1 aGiribabu, Lingamallu1 aSingh, Surya, P.1 aPatil, Nandkumar, M.1 aKantam, Lakshmi1 aGupte, Sunil, P.1 aChaudhari, Raghunath, V.  uhttps://library.ncl.res.in/content/highly-efficient-sulfimidation-13-dithianes-cui-complexes-002512nas a2200229   4500008004100000022001400041245015100055210006900206260007300275300001400348490000600362520159700368653002101965653003301986653002402019653001102043100002102054700002102075700002602096700002902122856013102151       2008                        eng d  a1566-736700aHighly selective synthesis of mono-ethylene glycol phenyl ethers via hydroxyalkoxylation of phenols by cyclic carbonates using large pore zeolites0 aHighly selective synthesis of monoethylene glycol phenyl ethers   aPO BOX 211, 1000 AE AMSTERDAM, NETHERLANDSbELSEVIER SCIENCE BVcAPR  a1649-16550 v93 a<p>Hydroxyalkoxylation of phenols by cyclic carbonates catalyzed by alkali loaded large pore zeolites has been reported. The study shows that KL type zeolite was recyclable and selective in producing mono-ethylene glycol pheryl ethers in similar to 98.5% yield. Various substituted simple phenols were converted into mono-ethylene glycol ether of phenols with over 90% yields, except 3-bromo and 2-methyl phenols. Mono hydroxyl plienols such as hydroquinone, biphenol and BPA (2,2-bis(4-hydroxyphenyl)propane) also produce corresponding mono- and di-ethylene glycol ethers. The ratio of ethylene carbonate to phenol was found to be critical for selective formation of monoethylene glycol phenyl ether of phenols. A ratio of two results in formation of appreciable amount of diether derivative viz., 2-(2-phenoxyethoxy) ethanol. Compared to ethylene carbonate, a lower reactivity of 1,2-propane carbonate was found for hydroxyalkoxylation of phenol. It was found that ring opening at less hindered methylene carbon of 1,2-propylene carbonate prevailed giving rise to selective formation of beta-hydroxy phenyl ethers. The reactivity of ethylene carbonate towards O-alkylation versus transesterification of phenol has been explained on the basis of HSAB concept. Finally, it has been shown that yield of mono-ethylene glycol phenyl ether is controlled both by basicity and channel architecture of zeolite structure. KL zeolite was found to be the most effective zeolite because of it's intermediate basicity and one dimensional channel architect. (C) 2008 Elsevier B.V. All rights reserved.</p>10acyclic carbonate10aethylene glycol phenyl ether10ahydroxyalkoxylation10aphenol1 aKinage, Anil, K.1 aGupte, Sunil, P.1 aChaturvedi, Rajiv, K.1 aChaudhari, Raghunath, V.  uhttps://library.ncl.res.in/content/highly-selective-synthesis-mono-ethylene-glycol-phenyl-ethers-hydroxyalkoxylation-phenols-001707nas a2200169   4500008004100000022001400041245009700055210006900152260007100221300001400292490000700306520102000313100003001333700002101363700002901384856012401413       2008                        eng d  a0888-588500aTandem synthesis of beta-amino alcohols from aniline, dialkyl carbonate, and ethylene glycol0 aTandem synthesis of betaamino alcohols from aniline dialkyl carb  a1155 16TH ST, NW, WASHINGTON, DC 20036 USAbAMER CHEMICAL SOCcAPR  a2484-24940 v473 a<p>An efficient tandem route for selective synthesis of beta-amino alcohols from anilines, dialkyl carbonate and ethylene glycol in the presence of recyclable Na-Y zeolite has been demonstrated. Transesterification of dialkyl carbonate by ethylene glycol produce ethylene carbonate which further reacts with aniline to give beta-amino alcohols in a single step. This reaction system was studied under high-pressure as well as pot reaction condition. Various process parametric effects were investigated for the reaction of aniline, dialkyl carbonate, and ethylene glycol. It was observed that a maximum 51% yield of mono-beta-amino alcohol, i.e., N-phenylethanolamine (NPEA). is obtained under pressure conditions. The yield of NPEA was improved drastically (&gt;91%) by carrying out the reaction under pot conditions using diethyl carbonate as transesterification agent. Finally activity and selectivity of solid catalyst was explained on the basis of nature of active sites and pore structure of the catalyst.</p>1 aShivarkar, Anandkumar, B.1 aGupte, Sunil, P.1 aChaudhari, Raghunath, V.  uhttps://library.ncl.res.in/content/tandem-synthesis-beta-amino-alcohols-aniline-dialkyl-carbonate-and-ethylene-glycol-001838nas a2200253   4500008004100000022001400041245009500055210006900150260007300219300001400292490000700306520092800313653002201241653001301263653003301276653001401309653001701323653002301340100002201363700002101385700002801406700002101434856012901455       2009                        eng d  a1566-736700aCatalytic synthesis of chalcone and flavanone using Zn-Al hydrotalcite adhere ionic liquid0 aCatalytic synthesis of chalcone and flavanone using ZnAl hydrota  aPO BOX 211, 1000 AE AMSTERDAM, NETHERLANDSbELSEVIER SCIENCE BVcAUG  a1881-18880 v103 a<p>The Claisen-Schmidt condensation of 2'-hydroxy acetophenone and benzaldehyde to chalcone and flavanone show that calcined Zn-Al (6) hydrotalcite is active for this synthesis. Coating of ionic liquid `1-(tri-ethoxy-silyl-propyl)-3-methyl-imidazolium chloride' on Zn-Al hydrotalcites was accomplished employing incipient wetness process and on NaY, NaX, MK-5 and silica gel employing co-condensation methodology. Impregnated IL on calcined Zn-Al (6) catalysts were characterized by XRD, SEM, BET, (13)C and (27)Al NMR analysis and the activity of these catalysts were investigated for chalcone and flavanone synthesis. (27)Al CP MAS NMR technique was used to show that interaction of IL with hydrotalcite modifies the acid-base sites and is responsible for enhancement of catalyst activity. Several aromatic aldehydes were screened to assess the general applicability of the system. (c) 2009 Published by Elsevier B.V.</p>10a(27)Al CP MAS NMR10achalcone10aClaisen-Schmidt condensation10aFlavanone10aIonic liquid10aZn-Al hydrotalcite1 aKunde, Lalita, B.1 aGade, Swapna, M.1 aKalyani, Vishwanath, S.1 aGupte, Sunil, P.  uhttps://library.ncl.res.in/content/catalytic-synthesis-chalcone-and-flavanone-using-zn-al-hydrotalcite-adhere-ionic-liquid-001372nas a2200253   4500008004100000022001400041245011500055210006900170260009800239300001200337490000700349520044200356653001500798653001400813653003900827653001200866653001200878653002700890653000900917100002200926700002800948700002100976856012100997       2010                        eng d  a0268-260500aDibutyltin oxide catalyzed aminolysis of oxalate to carbamate, oxamate and derivatives of imidazolidine trione0 aDibutyltin oxide catalyzed aminolysis of oxalate to carbamate ox  aTHE ATRIUM, SOUTHERN GATE, CHICHESTER PO19 8SQ, W SUSSEX, ENGLANDbJOHN WILEY & SONS LTDcMAY  a402-4070 v243 a<p>Catalytic aminolysis of oxalates by simple and substituted ureas has been shown to give carbamates, oxamates and derivatives of imidazolidine trione. Various substituted ureas and oxalates were screened to verify the applicability of the protocol. The role of dibutyltin oxide as catalyst, effect of solvent and reaction conditions on product distribution pattern has been discussed. Copyright (C) 2010 John Wiley &amp; Sons, Ltd.</p>10aAminolysis10acarbamate10aderivative of imidazolidine trione10aoxalate10aoxamate10atransfunctionalyzation10aUrea1 aKunde, Lalita, B.1 aKalyani, Vishwanath, S.1 aGupte, Sunil, P.  uhttps://library.ncl.res.in/content/dibutyltin-oxide-catalyzed-aminolysis-oxalate-carbamate-oxamate-and-derivatives-002272nas a2200229   4500008004100000022001400041245012300055210006900178260007300247300001000320490000800330520141000338653001401748653001701762653001101779653002801790653002501818100002501843700002101868700002901889856012401918       2010                        eng d  a0926-860X00aHeterogenized copper catalysts for the amination of arylhalide: synthesis, characterization and catalytic applications0 aHeterogenized copper catalysts for the amination of arylhalide s  aPO BOX 211, 1000 AE AMSTERDAM, NETHERLANDSbELSEVIER SCIENCE BVcJAN  a73-810 v3723 a<p>This research investigated the synthesis, characterization and catalytic activity of heterogenized copper complexes for the selective amination of aryl halides. Amination reactions using homogeneous copper catalyst systems are not generally selective and it is also difficult to recover the catalyst from the homogeneous system for recycling. To overcome these difficulties, our efforts were directed towards the development of cheaper heterogeneous catalyst systems, which can be easily recovered and recycled. Heterogenized analogs of the homogenous Cu complexes were prepared using two methods: (a) encapsulation of copper complexes in zeolite-Y and (b) tethering of copper complexes on various supports like zeolite-Y, silica, charcoal, or clay. The encapsulated and tethered copper catalysts on zeolite-Y were characterized using EPR, Diffused reflectance UV-vis, XRD, IAS, ICPES, SEM, and TEM. The results confirmed that the copper complexes were truly heterogenized in zeolite-Y support. Encapsulated and tethered copper complexes were tested for amination of aryl iodide. The effects of various reaction parameters were examined using tethered Cu(Phen)(PPh(3))Br-PTA-Y catalyst to determine optimum conditions. A recycle study of encapsulated and tethered Cu catalyst was carried out to test their robustness for possible commercial exploitation. (C) 2009 Elsevier B.V. All rights reserved.</p>10aAmination10aC-N coupling10aCopper10aheterogeneous catalysis10amesoporous materials1 aPatil, Nandkumar, M.1 aGupte, Sunil, P.1 aChaudhari, Raghunath, V.  uhttps://library.ncl.res.in/content/heterogenized-copper-catalysts-amination-arylhalide-synthesis-characterization-and-001632nas a2200193   4500008004100000022001400041245008400055210006900139260007100208300001400279490000700293520090800300100002501208700001601233700002101249700002101270700002901291856011801320       2010                        eng d  a0888-588500aImmobilized palladium nanoparticles catalyzed oxidative carbonylation of amines0 aImmobilized palladium nanoparticles catalyzed oxidative carbonyl  a1155 16TH ST, NW, WASHINGTON, DC 20036 USAbAMER CHEMICAL SOCcFEB  a1027-10320 v493 a<p>Catalytic application of immobilized palladium nanoparticles for synthesis or ureas by oxidative carbonylation of amines has been investigated. This is the first report oil oxidative carbonylation of amines to ureas using immobilized palladium nanoparticles catalyst. The palladium nanoparticles were immobilized on a NaY zeolite support through 3-aminopropyl-trimethoxysilane (APTS) as anchoring agent. The [Pd]-APTS-Y catalyst along with NaI promoter showed high conversion and selectivity to the desired urea products over several amine compounds including ail example of an aliphatic amine precursor even at 333 K. The immobilized catalyst was easily separated and recycled several times without any loss of activity. The role of different solvents, iodide promoters, iodide to Pd ratio, concentration of substrates, and temperature on the overall yield of the reaction was also investigated.</p>1 aDidgikar, Mahesh, R.1 aRoy, Debdut1 aGupte, Sunil, P.1 aJoshi, Sunil, S.1 aChaudhari, Raghunath, V.  uhttps://library.ncl.res.in/content/immobilized-palladium-nanoparticles-catalyzed-oxidative-carbonylation-amines-002196nas a2200265   4500008004100000022001400041245009500055210006900150260007300219300001000292490000800302520124600310653001001556653002301566653001801589653000901607653003701616100002501653700002101678700002101699700002601720700002901746700002901775856012601804       2011                        eng d  a1381-116900aOxidative carbonylation of amine using water-soluble palladium catalysts in biphasic media0 aOxidative carbonylation of amine using watersoluble palladium ca  aPO BOX 211, 1000 AE AMSTERDAM, NETHERLANDSbELSEVIER SCIENCE BVcJAN  a20-280 v3343 a<p>Application of water-soluble palladium catalysts for oxidative carbonylation of aniline to N,N' diphenyl urea (DPU) has been reported. The water-soluble palladium catalysts prepared from sulfonated N-containing ligands were found to be highly stable under reaction conditions and easily recyclable due to insoluble urea product in the reaction medium. This is in contrast to the sulfonated phosphine ligands, which are vulnerable to oxidation under reaction conditions, showing poor activity and stability. Commercially available as well as laboratory synthesized ligands were used for preparing water-soluble palladium catalysts, for oxidative carbonylation of aniline. The best activity was obtained for Pd complex with disodium 2,2'-bipyridine-4,4'-disulfonate (Bipy-DS) ligand. Under optimized conditions Pd(BipyDS)Pd(OAc)(2) catalyst gave TOF of similar to 210h(-1) with aniline conversion of similar to 97% with similar to 91% selectivity for N.N'-diphenyl urea. It was found that the catalyst was easily reusable up to five times, with negligible loss in the catalytic activity. The effect of reaction parameters was investigated and a plausible reaction mechanism has been proposed. (C) 2010 Elsevier B.V. All rights reserved.</p>10aAmine10aBiphasic catalysis10aCarbonylation10aUrea10aWater-soluble palladium catalyst1 aDidgikar, Mahesh, R.1 aJoshi, Sunil, S.1 aGupte, Sunil, P.1 aDiwakar, Makarand, M.1 aDeshpande, Raj, Madhukar1 aChaudhari, Raghunath, V.  uhttps://library.ncl.res.in/content/oxidative-carbonylation-amine-using-water-soluble-palladium-catalysts-biphasic-media-001897nas a2200241   4500008004100000022001400041245011900055210006900174260009200243300001000335490000600345520098600351653002501337653002301362653002401385653001501409653001201424100002201436700002101458700002501479700002101504856013001525       2012                        eng d  a1751-825300aEnvironmentally benign synthesis of beta-hydroxy sulfides using cyclic carbonates catalyzed by large-pore zeolites0 aEnvironmentally benign synthesis of betahydroxy sulfides using c  a4 PARK SQUARE, MILTON PARK, ABINGDON OX14 4RN, OXON, ENGLANDbTAYLOR & FRANCIS LTDcAUG  a19-260 v53 a<p>An efficient one-pot synthesis of beta-hydroxy sulfides from thiophenol and cyclic carbonates catalyzed by large-pore zeolites has been reported. Reaction of thiophenol with ethylene carbonate in the presence of the Na-X zeolite catalyst gave the highest yield of 2-(phenylthio)ethanol (100%), while reaction with propylene carbonate a highest yield of regioselective product 1-(phenylthio)propan-2-ol was obtained (97%). Enantiomerically pure 1,2-propylene carbonate gave highly regioselective and stereospecific phenylthiopropanol, demonstrating that original chirality of propylene carbonate is retained. A plausible mechanism has been proposed for zeolite-catalyzed transformation involving a chemoselective nucleophilic attack of thiophenoloxide ion onto the less-substituted carbon of cyclic carbonate. The Na-X zeolite catalyst is recyclable and provides advantages of green chemistry approach to the synthesis of beta-hydroxy sulfides without the use of any solvent.</p>10abeta-hydroxy sulfide10aethylene carbonate10apropylene carbonate10athiophenol10azeolite1 aUpare, Pravin, P.1 aKinage, Anil, K.1 aShingote, Savita, K.1 aGupte, Sunil, P.  uhttps://library.ncl.res.in/content/environmentally-benign-synthesis-beta-hydroxy-sulfides-using-cyclic-carbonates-catalyzed-0