01272nas a2200205   4500008004100000022001400041245010800055210006900163260007500232300001400307490000700321520050100328653001200829653001500841100002400856700002000880700001800900700001900918856012900937       2014                        eng d  a0936-521400aClay-supported copper nitrate (Claycop): a mild reagent for the selective nitration of aromatic olefins0 aClaysupported copper nitrate Claycop a mild reagent for the sele  aRUDIGERSTR 14, D-70469 STUTTGART, GERMANYbGEORG THIEME VERLAG KGcSEP  a1997-20000 v253 a<p>A straightforward and highly selective method has been developed for the nitration of a wide variety of aromatic and aliphatic olefins by using a clay-supported copper nitrate (Claycop) and a catalytic amount of (2,2,6,6-tetramethylpiperidin-1-yl)oxyl, an inexpensive and mild reagent system. High conversions and exclusive E-selectivity, together with the environmentally benign nature of the Claycop reagent, make this a green method and an attractive alternative to established methods.</p>10aalkenes10anitrations1 aBegari, Eeshwaraiah1 aSingh, Chandani1 aNookaraju, U.1 aKumar, Pradeep  uhttps://library.ncl.res.in/content/clay-supported-copper-nitrate-claycop-mild-reagent-selective-nitration-aromatic-olefins-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-135-101911nas a2200277   4500008004100000022001400041245014600055210006900201260007500270300001400345520089100359653001201250653001901262653002601281653002401307653001401331653001501345653002201360100002001382700001901402700002001421700002101441700001901462700002501481856012701506       2015                        eng d  a1434-193X00aModular synthesis of biaryl-substituted phosphine ligands: application in microwave-assisted palladium-catalyzed C-N cross-coupling reactions0 aModular synthesis of biarylsubstituted phosphine ligands applica  aPOSTFACH 101161, 69451 WEINHEIM, GERMANYbWILEY-V C H VERLAG GMBHcOCT  a6515-65253 a<p>Biaryl-substituted monophosphine-based ligands have been synthesized by transition-metal-free ARYNE cross-coupling reaction of aryllithiums with 1,2-dibromobenzene and subsequent regioselective functionalization through bromine-lithium interconversion. These ligands were employed in palladium-catalyzed C-N bond-forming reactions. The reaction was found to be general with wide substrate applicability. A wide variety of both primary and secondary amines were successfully coupled with an array of differently substituted halobenzenes under microwave irradiation to give the expected products in good to excellent yields. A number of biaryl-substituted phosphine ligands screened for the coupling reaction showed that steric bulk and the electronic properties of substituents on phosphorus play a crucial role in governing the catalytic activity of C-N cross-coupling reactions.</p>10aBiaryls10aCross-coupling10aHomogeneous catalysis10aMicrowave chemistry10aPalladium10aPhosphines10asynthetic methods1 aSingh, Chandani1 aRathod, Jayant1 aJha, Vishwajeet1 aPanossian, Armen1 aKumar, Pradeep1 aLeroux, Frederic, R.  uhttps://library.ncl.res.in/content/modular-synthesis-biaryl-substituted-phosphine-ligands-application-microwave-assisted-0