naa a22 4500 510734227 CHVBK 20180411083003.0 cr unu---uuuuu 180411e20130701xx s 000 0 eng 10.1007/s12039-013-0433-7 doi (NATIONALLICENCE)springer-10.1007/s12039-013-0433-7 Study of TiO2 nanoparticle phase alteration and its catalytic effect on the chemoselective N -sulphonylation of amines and urazoles [Elektronische Daten] [DAVOOD AZARIFAR, FATEMEH SOLEIMANEI, BABAK JALEH] Anatase and rutile are the two major crystalline phases of TiO2. Heat treatment can change crystal structure and physical properties of TiO2 nanoparticles. The effect of particles size on anatase-rutile phase transformation has been studied for the N-sulphonylation of amines and urazoles both under the conventional and ultrasound irradiation conditions. The main advantages allocated to this method are chemoselectivity, reduced reaction times, high yield, non-solvent green conditions and easy procedure. The catalyst can be easily recovered simply by filtration and reused with no significant loss in its reactivity. Graphical Abstract The effect of particle size on anatase-rutile phase transformation has been studied for the N-sulfonylation of amines and urazoles both under the conventional and ultrasound irradiation conditions. The main advantages include are chemoselectivity, reduced reaction times, high yield, non-solvent green conditions and easy procedure. The catalyst can be easily recovered simply by filtration and reused without any significant loss in its reactivity. Indian Academy of Sciences, 2013 Amine nationallicence urazole nationallicence sulphonamide nationallicence phase transformation nationallicence TiO2P25-900 nationallicence ultrasound irradiation nationallicence solvent-free nationallicence AZARIFAR DAVOOD Department of Organic Chemistry, Faculty of Chemistry, Bu-Ali Sina University, 65174, Hamedan, Iran aut SOLEIMANEI FATEMEH Department of Organic Chemistry, Faculty of Chemistry, Bu-Ali Sina University, 65174, Hamedan, Iran aut JALEH BABAK Department of Physics, Bu-Ali Sina University, 65174, Hamedan, Iran aut Journal of Chemical Sciences Springer India 125/4(2013-07-01), 819-826 0974-3626 125:4<819 2013 125 12039 https://doi.org/10.1007/s12039-013-0433-7 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s12039-013-0433-7 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- AZARIFAR DAVOOD Department of Organic Chemistry, Faculty of Chemistry, Bu-Ali Sina University, 65174, Hamedan, Iran aut NATIONALLICENCE 700 1- SOLEIMANEI FATEMEH Department of Organic Chemistry, Faculty of Chemistry, Bu-Ali Sina University, 65174, Hamedan, Iran aut NATIONALLICENCE 700 1- JALEH BABAK Department of Physics, Bu-Ali Sina University, 65174, Hamedan, Iran aut NATIONALLICENCE 773 0- Journal of Chemical Sciences Springer India 125/4(2013-07-01), 819-826 0974-3626 125:4<819 2013 125 12039 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer