01977nas a2200241   4500008004100000022001400041245011100055210006900166260009500235300001200330490000800342520104800350653002701398653002301425653003101448653002101479653004101500653001401541653001401555100001601569700002101585856012901606       2012                        eng d  a0021-951700aAminolysis of epoxides catalyzed by three-dimensional, mesoporous titanosilicates, Ti-SBA-12 and Ti-SBA-160 aAminolysis of epoxides catalyzed by threedimensional mesoporous   a525 B ST, STE 1900, SAN DIEGO, CA 92101-4495 USAbACADEMIC PRESS INC ELSEVIER SCIENCEcSEP  a126-1400 v2933 a<p>The application of three-dimensional, mesoporous titanosilicates (Ti-SBA-12 and Ti-SBA-16) as reusable, solid catalysts for the synthesis of a range of beta-amino alcohols in high yields and selectivity through ring-opening of epoxides with amines at ambient and solvent-free conditions is reported, for the first time. These mesoporous titanosilicates (Si/Ti = 20-80) were prepared by a direct hydrothermal synthesis route adjusting the concentration of HCl (0.05-2 M) used in the synthesis. Ti ions in these catalysts were mostly substituted for Si in the framework. Water adsorption and Si-29 magic-angle spin nuclear magnetic resonance spectroscopy revealed that Ti-SBA-16 is more hydrophobic than Ti-SBA-12. Mesoporosity, three-dimensional architecture, surface hydrophobicity and easy access of Lewis acidic, framework-substituted Ti sites are the factors responsible for the superior activity of Ti-SBA-16 compared to Ti-SBA-12 and the hitherto known solid catalysts for this reaction. (C) 2012 Elsevier Inc. All rights reserved.</p>10aAminolysis of epoxides10abeta-Amino alcohol10aMesoporous titanosilicates10aMolecular sieves10aRing opening of epoxides with amines10aTi-SBA-1210aTi-SBA-161 aKumar, Anuj1 aSrinivas, Darbha  uhttp://library.ncl.res.in/content/aminolysis-epoxides-catalyzed-three-dimensional-mesoporous-titanosilicates-ti-sba-12-and-0