01669nas a2200253   4500008004100000022001400041245013200055210006900187260007300256300001200329490000700341520072900348653001701077653003201094653002301126653001301149653001601162653001201178100002601190700002201216700001801238700002801256856013101284       2012                        eng d  a1566-736700aThermally decomposed Cu-Fe-hydrotalcite. a novel highly active catalyst for o-arylation of naphthol and phenols by aryl halides0 aThermally decomposed CuFehydrotalcite a novel highly active cata  aPO BOX 211, 1000 AE AMSTERDAM, NETHERLANDSbELSEVIER SCIENCE BVcDEC  a132-1360 v293 a<p>A novel, efficient and environmentally benign method has been reported for the synthesis of diaryl ethers by the o-arylation of napthol or phenols with aryl halides in dimethylformamide (as a solvent) under reflux, using a novel heterogeneous catalyst (having redox properties), obtained from thermal decomposition of Cu-Fe at 600 degrees C in the absence of externally added base. The catalyst comprises Cu(II) and Fe(III) species (oxides and hydroxides), which are uniformly distributed during the catalyst formation. The catalyst can be easily separated from the reaction mixture, simply by filtration and reused several times without a significant loss of its activity. (C) 2012 Elsevier B.V. All rights reserved.</p>10aAryl halides10aC-O cross coupling reaction10aCu-Fe-hydrotalcite10aNaphthol10ao-Arylation10aPhenols1 aChoudhary, Vasant, R.1 aDumbre, Deepa, K.1 aYadav, P., N.1 aBhargava, Suresh, Kumar  uhttps://library.ncl.res.in/content/thermally-decomposed-cu-fe-hydrotalcite-novel-highly-active-catalyst-o-arylation-naphthol-001738nas a2200229   4500008004100000022001400041245010400055210006900159260007300228300001000301490000800311520087700319653002301196653002301219653001601242100002201258700002401280700001801304700002601322700002801348856013201376       2014                        eng d  a0926-860X00aMesoporous, ligand free Cu-Fe solid catalyst mediated CS cross coupling of thiols with aryl halides0 aMesoporous ligand free CuFe solid catalyst mediated CS cross cou  aPO BOX 211, 1000 AE AMSTERDAM, NETHERLANDSbELSEVIER SCIENCE BVcAPR  a54-600 v4763 a<p>Solid catalyst derived from Cu-Fe hydrotalcite was demonstrated to be a novel, ligandless, efficient and environmentally greener catalyst for the synthesis of diaryl sulfurs from the C-S cross coupling reaction of substituted thiols with different aryl halides. This catalyst has shown higher product yield in the presence of dimethylformamide (as a solvent) and K2CO3 (as a base) at 120 C. Influence of different solvents and bases on the product yield has also been investigated. The catalyst can be easily separated from the reaction mixture, simply by filtration and reused several times without a significant loss of its activity. The catalyst has been fully characterized for its surface and bulk properties and the mesoporous CuO:Fe2O3 phase was attributed for its catalytic activity towards S-arylation reactions. (C) 2014 Elsevier B.V. All rights reserved.</p>10aC-S cross coupling10aCu-Fe-hydrotalcite10aS-arylation1 aDumbre, Deepa, K.1 aSelvakannan, P., R.1 aPatil, S., K.1 aChoudhary, Vasant, R.1 aBhargava, Suresh, Kumar  uhttps://library.ncl.res.in/content/mesoporous-ligand-free-cu-fe-solid-catalyst-mediated-cs-cross-coupling-thiols-aryl-halides-0