01684nas a2200241   4500008004100000022001400041245012000055210006900175260010600244300001400350490000700364520074300371653001501114653002401129653001801153653001101171653002101182100003101203700002501234700002701259700002401286856013201310       2012                        eng d  a0040-403900aLigand free, highly efficient synthesis of diaryl ether over copper fluorapatite as heterogeneous reusable catalyst0 aLigand free highly efficient synthesis of diaryl ether over copp  aTHE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLANDbPERGAMON-ELSEVIER SCIENCE LTDcAPR  a1826-18290 v533 a<p>A novel ligand-free, highly efficient, and an inexpensive method has been developed by using ecofriendly, heterogeneous reusable copper fluorapatite (CuFAP) catalyst for the synthesis of diaryl ethers from the cross coupling reaction of the various substituted aryl halides (fluoride, chloride, bromide, and iodide) with the potassium salts of various substituted phenols in the presence of N-methyl 2-pyrrolidone (NMP) as a solvent at 120 degrees C. The protocol obtained the corresponding cross coupling products in good to excellent yield. The CuFAP catalyst was recovered by simple filtration from the reaction mixture and reused several times without the loss of catalytic activity. (C) 2012 Elsevier Ltd. All rights reserved.</p>10aArylhalide10aCopper fluorapatite10aDiaryl ethers10aphenol10aUllmann coupling1 aMulla, Shafeek, Abdul Rash1 aInamdar, Suleman, M.1 aPathan, Mohsinkhan, Y.1 aChavan, Santosh, S.  uhttps://library.ncl.res.in/content/ligand-free-highly-efficient-synthesis-diaryl-ether-over-copper-fluorapatite-heterogeneous-0