Design and Synthesis of New Organic NonLinear Optical Materials Study of Reaction Mechanisms Mechanistic studies of novel molecular reorganizations encountered in the course of total synthesis. Representative Publications Srinivasan Chandrasekaran Professor and Chairman,Division of Chemical Sciences; Ph.D. Madras Univ. (with S. Swaminathan); Postdoctoral research: Harvard University (with E.J. Corey) and Syntex, Palo Alto. S.S. Bhatnagar Prize (CSIR), FASc, FNA, FTWAS Tel: 293-2404; 360-2423 (off); 360-1269 (home) Fax: 360-0529/360-0683 E-mail:scn@orgchem.iisc.ernet.in Research interests New Synthetic Methodology: Chemistry of Titanium (III) Tetrahydroborates and their use in Stereoselective Reduction Chemistry of Binary Molybdenum-Sulfur Systems as Efficient Sulfur Transfer Reagents. Development of New Protective Groups for Peptide Synthesis using Mo-S Systems. Study of Induced Internal Redox Reactions of Tetrathiomolybdates. New Ruthenium (II) –Bisoxazoline Catalysts for Highly Chemoselective Aerobic Epoxidation and for Asymmetric Oxygen Transfer Reactions. Nanostructured Amorphous Metals / Alloys as New Catalysts for Cycloalkane Oxidation. Hybrid Organic –Inorganic Chiral Catalysts for Asymmetric Synthesis Total Synthesis of Natural Products Application of the reagents and synthetic methodology developed in this laboratory to the synthesis of natural products particularly Cyclic Peptides, Pyrrolo Benzodiazepine class of AntiTumor Antibiotics, Carbohydrates etc. S 2 S O S N Cl N O Ru Mo Organic Materials Design and Synthesis of Metallorganic Chemical Vapor Deposition Precursors for Thin Film Applications. K.R.Prabhu, N.Devan and S. Chandrasekaran, Chemistry of Tetrathiomolybdate: Applications in Organic Synthesis, Synlett, 2002, 17621778 R.G.Bhat, S.Sinha and S.Chandrasekaran, Propargyloxycarbonyl (Poc) Amino Acid Chlorides as Efficient Coupling Reagents for the Synthesis of 100% Diastereopure Peptides and Resin Bound Tetrathiomolybdate as an Effective Deblocking Agent For Poc Group., Chem.Comm. 2002, 812-813 N. Devan, P. Ramu Sridhar, K.R. Prabhu and S. Chandrasekaran,Tetrathiomolybdate Assisted Ring Opening of Epoxides and Cleavage of Diselenides: Multistep Reactions in One Pot, J.Org.Chem.,. 2002, 67, 9417-9420. P. Ramu Sridhar, K.R. Prabhu and S. Chandrasekaran, Selective Reduction of Anomeric Azides to Amines with Tetrathiomolybdate: Synthesis of beta-DGlycosylamines, J.Org.Chem., 2003, 68, 5261-5264. K. Shalini, G.N. Subbanna, S.A. Shivashankar and S. Chandrasekaran, Thin Films of Iron Oxide by Low Pressure MOCVD Using a Novel Precursor: Tris( tButyl-3-oxo-butanoato) Iron (III), Thin Solid Films, 2003, 424, 56-60. D. Dhar, Y. Koltypin, A. Gedanken and S. Chandrasekaran; Catalytic aerobic epoxidation of olefins with nanostructured amorphous CoO-MCM 41 prepared by ultrasonically controlled deposition - precipitation of an organometallic precursor., Catal.Lett., 2003, 197-200 S O N Cl N O