Before 2010
29. Zwitterionic-type molten salt catalyzed syn-selective aza-Henry reaction: Solvent-free one-pot synthesis of β-nitroamine.
Kundu, D.; Debnath R. K.; Majee, A. and Hajra, A.
Tetrahedron Lett. 2009, 50, 6998.
28. Indium triflate-catalyzed one-pot synthesis of 1-substituted-1H-1,2,3,4-tetrazoles under solvent-free conditions.
Kundu, D.; Majee, A. and Hajra, A.
Tetrahedron Lett. 2009, 50, 2668.
27. An Efficient One-Pot Synthesis of Naphthoxazinones by a Three-Component Coupling of Naphthol, Aldehydes, and Urea Catalyzed by Zinc Triflate.
Kundu, D.; Majee, A. and Hajra, A.
J. Heterocycl. Chem. 2009, 46, 1019.
26. Indium Triflate-Catalyzed One-Pot Synthesis of 14-Alkyl or Aryl-14H-dibenzo[a,j ]xanthenes in Water.
Urinda, S.; Kundu, D.; Majee, A. and Hajra, A.
Heteroat. Chem. 2009, 20, 232.
25. Zinc Chloride as an Efficient Catalyst for Chemoselective Dimethyl Acetalization.
Roy, A.; Rahman, M.; Das, S.; Kundu, D.; Kundu, S. K.; Majee, A. and Hajra, A.
Synth. Environmentally Benign Aqueous Zinc Tetrafluoroborate-Catalyzed One-Pot Biginelli Condensation at Room Temperature.
Kundu, S. K.; Majee, A.; and Hajra, A.
Indian J. Chem. 2009, 48B, 408
23. Synthesis of 1,5-benzothiazepines with microwave irradiation under solvent and catalyst-free conditions.
Rahman, M.; Majee, A. and Hajra, A.
J. Chem. Res. 2009, 178
22. A facile synthesis of 2,2,4-trisubstituted-1,2-dihydroquinolines catalyzed by zinc triflate under solvent-free conditions.
Kundu, D.; Majee, A.; Hajra, A. J.
Chin. Chem. Soc., 2008, 55, 1186
21. L-Proline Catalyzed Enamination of β-Dicarbonyl Compounds under Solvent-Free Conditions.
Kundu, D.; Majee, A.; Hajra, A.
Chin. J. Chem. 2008, 26, 1545.
Post-doctoral publication
20. Palladium-catalyzed Aerobic Dehydrogenative Aromatization of Cyclohexanone Imines to Arylamine.
Hajra, A.; Wei, Y.; and Yoshikai*, N.
Org. Lett. 2012, 14, 5488.
19. Aminohydoxyphosphine Ligand for Copper-Catalyzed Enantioselective Conjugated addition of organozinc to enones.
Hajra, A.; Yoshikai, N.; Nakamura*, E.
Org. Lett., 2006, 8, 4153 (Highlighted in Sunfacts, 2007, 67)
18. Synthesis of Chiral a-Fluoroketones through Catalytic Enantioselective Decarboxylation.
Nakamura*, M.; Hajra, A.; Endo, K.; Nakamura*, E.
Angew. Chem. Int. Ed. 2005, 44, 7248. (selected as Very Important Paper). (Synfacts 2006 (01), 0050-0050)
Publications from Ph.D. Research Work
16. Dichloroindium hydride (Cl2InH): A convenient reagent for stereoselective reduction of vic-dibromides to (E) alkenes.
Ranu*, B. C.; Das, A.; Hajra, A.
Synthesis, 2003, 1012.
15. Efficient microwave-assisted synthesis of quinolines and dihydroquinolines under solvent-free condition.
Ranu*, B. C.; Hajra, A.; Dey, S. S.; Jana,U.
Tetrahedron, 2003, 59, 813.
14. Highly efficient acylation of alcohols by acetic anhydride under solvent free and catalyst free condition: a practical and green alternative.
Ranu*, B. C,; Dey, S. S.; Hajra, A.
Green Chem. 2003, 5, 44.
13. Catalysis by an ionic liquid. Efficient conjugate addition of thiols to electron deficient alkenes catalyzed by molten tetrabutylammonium bromide under solvent-free condition.
Ranu*, B. C.; Dey, S. S.; Hajra, A.
Tetrahedron, 2003, 59, 2417.
12. A practical and green approach towards synthesis of Dihydropyrimidinones without any solvent and catalyst.
Ranu*, B. C; Hajra, A.; Dey, S. S.
Org. Process Res. Dev., 2002, 6, 817.
11. Solvent free, catalyst free Michael-type addition of amines to electron deficient alkenes.
Ranu*, B. C.; Dey, S. S.; Hajra, A.
ARKIVOC, 2002, 76.
10. A simple and green procedure for the synthesis of a- amino phosphonate by a one pot three- component condensation of carbonyl compound, amine and diethyl phosphite without solvent & catalyst.
Ranu*, B. C.; Hajra, A.
Green Chem., 2002, 4, 551.
9. Indium trichloride catalyzed one-step synthesis of amino nitriles by a three-component condensation of carbonyl compounds, amines and potassium cyanide.
Ranu* B. C.; Dey, S. S.; Hajra, A.
Tetrahedron 2002, 58, 2529.
8. Unusual cleavage of ethers by thiophenol on the surface of silica gel impregnated with indium chloride under microwave irradiation. An efficient procedure for the synthesis of thioethers through transthioetherification.
Ranu*, B. C.; Samanta, S.; Hajra, A.
Synlett 2002, 987.
7. Indium triiodide catalysed one-step conversion of tetrahydropyranyl ether to acetates with high selectivity. Ranu*, B. C.; Hajra, A.; J. Chem. Soc. Perkin Trans.1, 2001, 355.
6. Highly selective one-pot conversion of THP and MOM ethers to acetates by indium triiodide-catalysed deprotection and subsequent transesterification by ethyl acetate.
Ranu*, B. C.; Hajra, A.
J. Chem. Soc., Perkin Trans. 1, 2001, 2262.
5. Synthesis of alkyl-substituted pyrroles by three-component coupling of carbonyl compound, amine and nitro-alkane/alkene on a solid surface of silica gel/alumina under microwave irradiation.
Ranu*, B. C.; Hajra, A.
Tetrahedron, 2001, 57, 4767.
5. Indium Mediated Allylation of b -Keto Phosphonates.
Ranu*, B. C.; Samanta, S.; Hajra, A.;
J. Org. Chem., 2000, 66, 7519.
4. Microwave-Assisted Synthesis of Substituted Pyrroles by a Three-Component Coupling of α,β-Unsaturated Carbonyl Compounds, Amines and Nitroalkanes on the Surface of Silica Gel.
Ranu*, B. C.; Hajra, A.; Jana, U.
Synlett, 2000, 75.
3. Microwave-assisted simple synthesis of quinolines from anilines and alkyl vinyl ketones on the surface of silica gel in the presence of indium (III) chloride.
Ranu*, B. C.; Hajra, A.; Jana, U.
Tetrahedron Lett., 2000, 41, 531.
2. Indium(III) Chloride-Catalyzed One-Pot Synthesis of Dihydropyrimidinones by a Three-Component Coupling of 1,3-Dicarbonyl Compounds, Aldehydes, and Urea: An Improved Procedure for the Biginelli Reaction.
Ranu*, B. C.; Hajra, A.; Jana, U.
J. Org. Chem., 2000, 65, 6270.
1. General Procedure for the Synthesis of α-Amino Phosphonates from Aldehydes and Ketones Using Indium (III) Chloride as a Catalyst.
Ranu*, B. C.; Hajra, A.; Jana, U.
Org. Lett. 1999, 1, 1141.