01487nas a2200229   4500008004100000022001400041245013100055210006900186260007300255300001200328490000600340520058300346653002400929653003300953653002500986100002201011700002901033700002401062700002301086700002001109856012801129       2007                        eng d  a1566-736700aPhosphotungstic acid as an efficient solid catalyst for intramolecular rearrangement of benzyl phenyl ether to 2-benzyl phenol0 aPhosphotungstic acid as an efficient solid catalyst for intramol  aPO BOX 211, 1000 AE AMSTERDAM, NETHERLANDSbELSEVIER SCIENCE BVcFEB  a139-1440 v83 a<p>An heteropoly acid (phosphotungstic acid, PTA) was found to be a promising solid acid catalyst as an alternative to the conventional stoichiometric reagents for the rearrangement of benzyl phenyl ether giving 2-benzyl phenol as a major product and 4-benzyl phenol and dibenzylated phenols as side products. Catalyst was recovered from the reaction mixture and reused again without loss of activity. Based on the observed product distribution for various substrates a plausible catalytic reaction pathway has also been proposed. (c) 2006 Elsevier B.V. All rights reserved.</p>10abenzyl phenyl ether10aIntramolecular rearrangement10aPhosphotungstic acid1 aBhure, Mahesh, H.1 aRode, Chandrashekhar, V.1 aChikate, Rajeev, C.1 aPatwardhan, Neeraj1 aPatil, Shraddha  uhttps://library.ncl.res.in/content/phosphotungstic-acid-efficient-solid-catalyst-intramolecular-rearrangement-benzyl-phenyl01003nas a2200217   4500008004100000022001400041245012000055210006900175260008600244300001200330490000700342520016600349653001700515653001800532653001700550100002200567700001900589700001900608700002900627856012900656       2008                        eng d  a0039-791100aFacile and highly selective deprotection of tert-butyldimethyl silyl ethers using sulfated SnO2 as a solid catalyst0 aFacile and highly selective deprotection of tertbutyldimethyl si  a325 CHESTNUT ST, SUITE 800, PHILADELPHIA, PA 19106 USAbTAYLOR & FRANCIS INCcJAN  a346-3530 v383 a<p>Highly selective deprotection of tert-butyldimethylsilyl ethers at room temperature has been described using sulfated SnO2 as an efficient solid catalyst.</p>10adeprotection10asulfated SnO210aTBDMS ethers1 aBhure, Mahesh, H.1 aKumar, Indresh1 aNatu, Arun, D.1 aRode, Chandrashekhar, V.  uhttps://library.ncl.res.in/content/facile-and-highly-selective-deprotection-tert-butyldimethyl-silyl-ethers-using-sulfated-001505nas a2200265   4500008004100000022001400041245013700055210006900192260007300261300001400334490000600348520052600354653001600880653002300896653002100919653001500940653003500955653000800990100002200998700001901020700001901039700002401058700002901082856012801111       2008                        eng d  a1566-736700aPhosphotungstic acid on silica with modified acid sites as a solid catalyst for selective cleavage of tert-butyldimethylsilyl ethers0 aPhosphotungstic acid on silica with modified acid sites as a sol  aPO BOX 211, 1000 AE AMSTERDAM, NETHERLANDSbELSEVIER SCIENCE BVcMAY  a1863-18680 v93 a<p>The strength and nature of acid sites of bulk phosphotungstic acid could be modified after dispersing it on silica support which was characterized by XRD, ammonia TPD and (31)P MAS NMR techniques. This solid acid catalyst was found to be highly selective for the cleavage of tert-butyldimethylsilyl ethers at room temperature. The catalyst was easily recovered by filtration and could be reused for several times without loss of any activity giving a TON of 9.5 x 10(5). (C) 2008 Elsevier B.V. All rights reserved.</p>10aAmmonia TPD10aCatalytic cleavage10areaction pathway10asolid acid10atert-butyldimethylsilyl ethers10aXRD1 aBhure, Mahesh, H.1 aKumar, Indresh1 aNatu, Arun, D.1 aChikate, Rajeev, C.1 aRode, Chandrashekhar, V.  uhttps://library.ncl.res.in/content/phosphotungstic-acid-silica-modified-acid-sites-solid-catalyst-selective-cleavage-tert-0