@article { ISI:000242960400008, title = {Phosphotungstic acid as an efficient solid catalyst for intramolecular rearrangement of benzyl phenyl ether to 2-benzyl phenol}, journal = {Catalysis Communications}, volume = {8}, number = {2}, year = {2007}, month = {FEB}, pages = {139-144}, publisher = {ELSEVIER SCIENCE BV}, type = {Article}, address = {PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS}, abstract = {

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.

}, keywords = {benzyl phenyl ether, Intramolecular rearrangement, Phosphotungstic acid}, issn = {1566-7367}, doi = {10.1016/j.catcom.2006.05.046}, author = {Bhure, Mahesh H. and Rode, Chandrashekhar V. and Chikate, Rajeev C. and Patwardhan, Neeraj and Patil, Shraddha} } @article { ISI:000253042200004, title = {Facile and highly selective deprotection of tert-butyldimethyl silyl ethers using sulfated SnO2 as a solid catalyst}, journal = {Synthetic Communications}, volume = {38}, number = {3}, year = {2008}, month = {JAN}, pages = {346-353}, publisher = {TAYLOR \& FRANCIS INC}, type = {Article}, address = {325 CHESTNUT ST, SUITE 800, PHILADELPHIA, PA 19106 USA}, abstract = {

Highly selective deprotection of tert-butyldimethylsilyl ethers at room temperature has been described using sulfated SnO2 as an efficient solid catalyst.

}, keywords = {deprotection, sulfated SnO2, TBDMS ethers}, issn = {0039-7911}, doi = {10.1080/00397910701767056}, author = {Bhure, Mahesh H. and Kumar, Indresh and Natu, Arun D. and Rode, Chandrashekhar V.} } @article { ISI:000256183700015, title = {Phosphotungstic acid on silica with modified acid sites as a solid catalyst for selective cleavage of tert-butyldimethylsilyl ethers}, journal = {Catalysis Communications}, volume = {9}, number = {9}, year = {2008}, month = {MAY}, pages = {1863-1868}, publisher = {ELSEVIER SCIENCE BV}, address = {PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS}, abstract = {

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.

}, keywords = {Ammonia TPD, Catalytic cleavage, reaction pathway, solid acid, tert-butyldimethylsilyl ethers, XRD}, issn = {1566-7367}, doi = {10.1016/j.catcom.2008.03.017}, author = {Bhure, Mahesh H. and Kumar, Indresh and Natu, Arun D. and Chikate, Rajeev C. and Rode, Chandrashekhar V.} }