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List of Publications
  1. Asymmetric synthesis of the dopamine D1 agonist, dihydrexidne from D-serine
    Malhotra, R.; Ghosh, A.; Ghosh, R.; Chakrabarti, S.; Dutta, S.; Dey, T. K.; Roy, S.; Basu,* S.; Hajra,* S. Tetrahedron: Asymm.  2011, 22, 1522.

  2. Catalytic Enantioselective Aziridoarylation of Aryl Cinnamyl Ethers toward Synthesis of trans-3-Amino-4-arylchromans
    Hajra, S.; Sinha, D. J. Org. Chem. 2011, 76, 7334.

  3. Asymmetric synthesis of the dopamine D1 agonist, dihydrexidne
    Hajra, S.; Bar, S. Tetrahedron: Asymm. 2011, 22, 775.

  4. Catalytic enantioselective synthesis of A-86929, a dopamine D1 Agonist
    Hajra, S.; Bar, S. Chem. Commun. 2011, 47, 3981-3982.

  5. Asymmetric epoxidation of cinnamic acid derivatives by in situ generated dioxiranes of chloroacetones: Scope and limitations.
    Hajra, S.; Bhowmick, M. Tetrahedron: Asymm. 2010, 21, 2223.

  6. Asymmetric Syntheses of (–)-Enterolactone and (7¢R)-7¢-Hydroxyenterolactone via Organo-catalyzed Aldol Reaction.
    Hajra, S.; Giri, A. K.; Hazra, S. J. Org. Chem. 2009, 74, 7978.

  7. A Catalytic and Enantioselective Synthesis of trans-2- Amino-1-aryltetralins.
    Hajra, S.; Maji, B.; Mal, D. Adv. Synth. Catal. 2009, 351, 859.

  8. Organocatalytic and Enantioselective Synthesis of b-(Hydroxyalkyl) -g-Butyrolactones.
    Hajra, S.; Giri, A. K. J. Org. Chem. 2008, 73, 3935.

  9. Stereoselective One-Pot Synthesis of Oxazolines.
    Hajra, S.; Bar, S.; Sinha, D.; Maji, B. J. Org. Chem. 2008, 73, 4320.

  10. Concise Syntheses of (+)- and (-)-Methylenolactocins and Phaseolinic Acids.
    Hajra, S.; Giri, A. K.; Karmakar, A. and Hazra, S. Tetrahedran Lett. 2008, 49,3625.

  11. A One-Pot Stereoselective Synthesis of trans-1-Amino-2-Aryltetralins from 2-Arylethyl Styrenes.
    Hajra, S.; Maji, B.; Sinha, D.; Bar, S. Tetrahedran Lett. 2008, 49,4057.

  12. Design and Synthesis of Chiral N-Chloro-imidodicarbonates: Application to Asymmetric Chlorination of Silylenol Ethers.
    Hajra, S. Bhowmick, M.; Maji, B. and Sinha, D. J. Org. Chem. 2007, 72, 4872.

  13. Samarium triflate catalyzed and halogen-promoted Friedel-Crafts Alkylation with Alkenes.
    Hajra, S, Maji, B. and Bar, S. Org. Lett. 2007, 9, 2783.

  14. Asymmetric aldol reactions under normal and inverse addition modes of reagents.
    Hajra, S.; Giri, A. K.; Karmakar, A.; Khatua, S. Chem. Comm. 2007, 2408.

  15. Metal Triflates Catalyzed Reactions of Alkenes, NBS, Nitriles and TMSN3: Synthesis of 1,5-Disubsituted Tetrazoles.
    Hajra, S.; Sinha, D. and Bhowmick, M. J. Org. Chem. 2007, 72, 1852.

  16. Highly Regio- and Stereoselective Asymmetric Bromoazidation of Chiral a,b-Unsaturated Carboxylic Acid Derivatives: Scope and Limitations.
    Hajra, S.; Bhowmick, M.; Sinha, D. J. Org. Chem. 2006, 71, 9237.

  17. Metal triflate catalyzed highly regio- and stereoselective 1,2-bromoazidation of alkenes using NBS and TMSN3 as the bromine and azide sources
    Hajra, S.; Sinha, D.; Bhowmick, M. Tetrahedran Lett. 2006, 47,7017.

  18. Stereoselective synthesis of (-)-chloramphenicol and (-)-thiomphenicol.
    Hajra, S.; Karmakar, A.; Maji, T. and Medda, A. Tetrahedron 2006, 62, 8959.

  19. Silver (I)-promoted asymmetric O-methylhalohydrin reaction of chiral α,β-unsaturated carboxylic acid derivatives: Enantioselective synthesis of N-protected syn-b-methoxy-a-amino acids.
    Hajra, S.; Karmakar, A.; and Bhowmick, M. Tetrahedron Asymm. 2006, 17, 210.

  20. Lewis Acid Catalyzed Intramolecular Halo-Arylation of Tethered alkenes using NXS as a Halonium Source: A General Method for the Synthesis of Chromanons, Chromans, Quinolones, Tetrahydroquinolines and Tetralins.
    Hajra, S.; Maji, B. and Karmakar, A. Tetrahedran Lett. 2005, 46,8599.

  21. Lewis acid catalyzed asymmetric halohydrin reactions of chiral a,b-unsaturated carboxylic acid derivatives with N-halosuccinimide (NXS) as the halogen source.
    Hajra, S.; Bhowmick, M. and Karmakar, A. Tetrahedron Lett. 2005, 46, 3073.

  22. Silver (I)-promoted asymmetric halohydrin reaction of chiral N-enoyl-2-oxazolidinones: Scope and limitations.
    Hajra, S.; Karmakar, A.; and Bhowmick, M. Tetrahedron 2005, 61, 2279.

  23. Asymmetric O-methylhalohydrin reaction of chiral N-enoyl-2-oxazolidinones: Synthesis of N-protected syn-b-methoxyphenylalanine, an unusual amino acid component of cyclomarins.
    Hajra, S.; Karmakar, A. Tetrahedron Lett. 2004, 45, 3185.

  24. Free-Radical-Mediated Conjugate Additions. Enantioselective Synthesis of Butyrolactone Natural Products: (-)-Enterolactone, (-)-Arctigenin, (-)-Isoarctigenin, (-)-Nephrosteranic Acid, and (-)-RoccellaricAcid.
    Sibi, M. P.; Liu, P.; Ji, J.; Hajra, S. and Chen, J.  J. Org. Chem. 2002, 67, 1738.

  25. A Highly Chemoselective Oxidation of Alcohols to Carbonyl Products with Iodosobenzene Diacetate Mediated by Chromium(III)(salen) Complexes: Synthetic and Mechanistic Aspects.
    Adam, W.; Hajra, S.; Herderich, M. and Saha-Möller, C. R.   Org. Lett. 2000, 2, 2773.

  26. Synthesis of Silicon-Containing Alanines.
    Sibi, M. P.; Harris, B.; Shay, J. J. and Hajra, S. Tetrahedron 1998, 54, 7221.

  27. The Intermolecular b-Coupling of Cyclic Enones with Activated Alkenes and Alkynes: Unexpectedb-Alkoxy Elimination from a 4-Alkoxy-2-Alkyl-1-Hydroxy-Cyclopentyl Radical.
    Pandey, G.; Ghorai, M. K. and Hajra, S. Tetrahedron Lett. 1998, 39, 8341.

  28. A New Strategy for the Construction of Carbo- and Oxycycles by Intramolecular Reductive Coupling of a,b-Unsaturated Esters.
    Pandey, G.; Ghorai M. K. and Hajra S. Tetrahedron Lett. 1998, 39, 1831.

  29. Visible-Light Initied Photosensitized Electron Transfer (PET) Cyclization of Aldehydes and Ketones to Tethered a,b-Unsaturated Esters: Stereoselective Synthesis of Optically Pure C- Furanoside.
    Pandey, G.; Hajra, S.; Ghorai, M. K. and Ravi Kumar, K. J. Org. Chem.  1997, 62, 5966.

  30. Designing of a Photosystem to Harvest Visible-Light to Electrons by Sequential Electron Transfer Processes: Reversing the Reactivity Profiles of a,b-Unsaturated Ketones as Carbon Radical Precursor by One Electron Reductive b-Activation.
    Pandey, G.; Hajra, S.; Ghorai, M. K. and Ravi Kumar, K. J. Am. Chem. Soc.  1997, 119, 8777.

  31. Designing of a Photosystem to Harvest Visible-Light to Electrons: Photosensitized one Electron Redox Reactions in Organic Synthesis.
    Pandey, G.; Hajra, S. and Ghorai, M. K. Pure & Appl. Chem. 1996, 68, 653.

  32. Visible-Light Initiated Photosensitized Electron Transfer (PET) Reductive b-Activation of a,b-Unsaturated Ketones for Radical Cyclization: A New Concept in Promoting Radical Reactions.
    Pandey, G.; Hajra, S. and Ghorai, M. K. Tetrahedron Lett. 1994, 35, 7837.

  33. A Novel Photosystem  for Harvesting Visible-Light to Drive Photoinduced Electron Transfer (PET) Reductions: b-Activation of a,b-Unsaturated Ketones for Radical Cyclization.
    Pandey, G. and Hajra, S.  Angew. Chem. Int. Ed. (Engl.), 1994, 33, 1169.

 

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