Manganese octahedral molecular sieves catalyzed preparation of amino alcohols from epoxides

PETR 7

Shanthakumar Sithambaram, SHANTHAKUMAR.SITHAMBARAM@uconn.edu1, Yunshuang Ding, dingysh2000@yahoo.com2, Xiongfei Shen, shen_xf@yahoo.com2, Linping Xu, Linping.Xu@uconn.edu1, and Steven L. Suib3. (1) Department of Chemistry, University of Connecticut, Chemistry Department, U3060, 55 North Eagleville Rd, Storrs, CT 06269-3060, (2) Institute of Materials Science, University of Connecticut, 55 North Eagleville Road, Storrs, CT 06269, (3) Department of Chemistry, Department of Chemical Engineering, Institute of Material Sciences, University of Connecticut, 55 North Eagleville Rd. U3060, Storrs, CT 06269-3060
Manganese oxide octahedral molecular sieves (OMS) belong to a class of synthetic manganese oxide materials with tunnel structure. OMS materials having a 2 x 2 tunnel structure were synthesized by different methods and used for studying ring opening reactions of epoxides. The physical and chemical properties of the OMS-2 materials are related to their activity in epoxide ring opening reactions. Results suggest that OMS-2 catalysts act as Lewis acid to promote the ring opening reaction. A desired acidity coupled with pore volume found in OMS-2 leads to high selectivity for beta-amino alcohol in the ring opening reaction. beta-amino alcohols are an important class of functional groups in many versatile biologically active natural and synthetic products.