ENLIGHTENMENT TO ERFECTION
Department of Chemistry

Dr. Sajal Das


M.Sc. Ph.D.

Assistsnt Professor

Contact Addresses:

Phone

+91- 94745 15731 (M), 0353- 277 6381 (W)

e-Mail

sajal.das@hotmail.com

Address(office) Department of Chemistry, University of North Bengal, Raja Rammounpur, PO-N.B.U., Dist-Darjeeling, West Bengal, Pin-734013, India.

Subject Specialization: Organic Chemistry

Areas of Research Interest: Synthetic Organic Chemistry

No. of Ph.D. students:    (a) Supervised: 01      (b) Ongoing: 06.

No. of M.Phil. students: (a) Supervised: Nil       (b) Ongoing: Nil .

No. of Publications:        (a) Scientific Papers: 23

Achievement & Awards:

Research Experiences:

Previous Positions:

Administrative Experiences:

Project Completed/Ongoing:

Some Publications:

  1. Auto-Tandem Palladium Catalysis: From Isoxazole to 2-Azafluorenone, S. Das, D. Hong, Z. Chen, W. H. Hersh, G. Subramaniam, Y. Chen, Org. Lett.2015, 17, 5578-5581.
  2. Regiocontrolled nitration of 4-quinolones at ambient conditions, S. Sarkar, P. Ghosh, A. Misra, S. Das, Synth. Commun.,2015, 45, 2386-2393.
  3. Formation, Thermodynamic Properties, Microstructures and Antimicrobial Activity ofMixed Cationic/Non-ionic Surfactant Microemulsions with Isopropyl Myristate as Oil,S.Bardhan, K. Kundu, S. Das, M.Poddar, S. K. Saha, B. K. Paul, J.Coll. Inter. Sci.2014,430, 129-139.
  4. N-Heterocyclic Carbenes (NHCs) in Asymmetric Organocatalysis, S. Dwivedi, S. Gupta, S. Das, Current Organocatalysis, 2014, 1, 13-39.
  5. A green etiquette for Pd catalyzed ligand free homocoupling reaction of arylboronic acids at ambient conditions; S. Dwivedi, S. Bardhan, P. Ghosh, S. Das, RSC Advances, 2014, 4, 41045-41050.
  6. A straight forward synthesis of 4-aryl substituted 2-quinolones via Heck reaction ; S. Gupta, B. Ganguly, S. Das, RSC Advances, 2014, 4, 41148-41151.
  7. Physicochemical studies of water-in-oil nonionic microemulsion in presence of benzimidazole-based ionic liquid and probing of microenvironment using model C–C cross coupling (Heck) reaction , B. Kar, S. Bardhan, K. Kundu, S. K. Saha, B. K. Paul S. Das, RSC Advances, 2014, 4, 21000-21009.  
  8. Synthesis of 6-Aryl substituted 4-quinolones via Suzuki Cross Coupling, S. Gupta, P. Ghosh, S. Dwivedi, S. Das, RSC Advances, 2014, 4, 6254-6260.
  9. Benzimidazole based palladium-N-heterocyclic carbene: a useful catalyst for C-C cross coupling reaction at ambient condition, S. Gupta, B. Basu, S. Das, Tetrahedron, 2013, 69, 122-128.
  10. Electrical Conductances of 1‑Butyl-3-propylimidazolium Bromide and 1‑Butyl-3-propylbenzimidazolium Bromide in Water, Methanol, and Acetonitrile at (308, 313, and 318) K at 0.1 MPa, S. Gupta, A. Chatterjee, S. Das, B. Basu, B. Das, J. Chem. Eng. Data, 2013, 58, 1-6.
  11. Synthesis of substituted 4-pyridones and 4-aminopyridinium salts via a one-pot pyridine synthesis, H. Andersson, S. Das, M. Gustafsson, R. Olsson, F. Almqvist, Tetrahedron Letters, 2010, 51, 4218-4220.
  12. Efficient, Mild, and Completely Regioselective Synthesis of Substituted Pyridines, H. Andersson, T. S. L. Banchelin, S. Das, R. Olsson, F. Almqvist. Chem. Commun. 2010, 42, 3384-3386. (DOI: 10.1039/C000748J)
  13. Complete Regioselective Addition of Grignard Reagents to Pyrazine N-oxides, Towards an Efficient Enantioselective Synthesis of Substituted Piperazines, H, Andersson, T. S. L. Banchelin, S. Das, M. Gustafsson, R. Olsson, F. Almqvist, Org. Letters, 2010, 12, 284-286.(DOI: 10.1021/ol902619h).
  14. Role of Catechol-violet for Cu(I)-Catalyzed Coupling of Aromatics Halides and Thiols, B. Basu, B. Mandal, S. Das, S. Kundu. Tetrahedron Letters, 2009, 50, 5523-5528.http://www.sciencedirect.com/scidirimg/clear.gif(doi:10.1016/j.tetlet.2009.07.076)
  15. Chemoselective reduction of aldehydes by ruthenium trichloride and resin-bound formates, B. Basu, B. Mandal, S. Das, P. Das. Beilstein journal of organic chemistry 2009, (doi:10.3762/bjoc.4.53).
  16. Palladium Supported on Polyionic Resin as Efficient, Ligand-free & Recyclable Catalyst for Heck, Suzuki-Miyaura and Sonogashira Reactions, B. Basu, S. Das, P. Das, B. Mandal, F. Alamqvist, D. Banerjee. Synthesis 2009, 1137-1146. (DOI: 10.1055/s-0028-1088003).
  17. Role of copper in catalyzing aryl and heteroaryl-Nitrogen (or -oxygen) bond formation under ligand-free and solvent-free conditions, B. Basu, S. Das, B. Mandal, Indian J. Chem B. 2008, 1701-1706.
  18. Recent Advances in KF/alumina Promoted Organic Reactions, B. Basu, P. Das, S. Das, Curr. Org. Chem. 2008, 141-158.
  19. Poly–ionic Heterogeneous Phenylating Agent for Base–free Suzuki–Miyaura Coupling Reaction, B. Basu, S. Das, S. Kundu, B. Mandal, Synlett. 2008, 255-259. (DOI: 10.1055/s-2008-1000874)
  20. Palladium–catalyzed selective amination of haloaromatics on KF–alumina surface, B. Basu, P. Das, A. K. Nanda, S. Das, S. Sarkar, Synlett, 2005, 1275-1278.
  21. Co–immobilized formate anion and palladium on a polymer surface: a novel heterogeneous combination for transfer hydrogenation, B. Basu, S. Das, P. Das A. K. Nanda, Tetrahedron Lett. 2005, 46, 8591–8593.
  22. Transfer hydrogenation using recyclable polymer–supported formate (PSF): Efficient and Chemoselective reduction of nitroarenes, B. Basu, P. Das, S. Das, Mol. Diversity, 2005, 9, 259–262.
  23. Amberlite-supported Formate/Pd Catalyst for C–C coupling Reactions, B. Basu, S. Das, P. Das, B. Mandal, D. Banerjee, F. Almqvist, Synfact, 2009, 6, 690, (DOI: 10.1055/s-0029-1216753.

Paper Presented in Symposia/ Conferences:

  1. Susmita Pal, Bablee Mandal, Sajal Das, Sekhar Kundu, SangitaMustafy, Basudeb Basu, “Highly  Efficient,  Recyclable  Rhodium  Catalyst  Immobilized  on  Poly-Ionic  Resins: Application in the Heck-type Coupling reactions” 10th National Symposium in Chemistry (NSC–9), CRSI, 2008 will be held at IISc. Bangalore, February 1–3,2008.
  2. Sajal Das, Sekhar Kundu, Basudeb Basu, “Poly–Ionic Heterogeneous Arylating Agent for Suzuki–Miyaura Coupling Reaction: Synthesis of Biphenyls” 9th National Symposium in Chemistry (NSC–9), CRSI, 2007 held at Delhi University, New Delhi–110 007, February 1–3, 2007.
  3. Bablee Mandal, Sajal Das and Basudeb Basu, “Ruthenium (III) Catalyzed Chemoselective Transfer  Hydrogenation  of  Aldehydes/Ketones  Using  Polymer  Supported  Formate  as Stable H–Donor” International Symposium on Current Perspectives in Organic Chemistry, held at Indian Association for the Cultivation of Science, Kolkata, December 7–9, 2006.
  4. Sajal Das, Bablee Mandal, Basudeb Basu, “Co–immobilization of Reagent and Catalyst on a Polymeric Surface: A Novel Heterogeneous system for Transfer Hydrogenation”; 8th National Symposium in Chemistry(NSC–8), CRSI, held at Indian Institute of Technology,Mumbai, Feb.3–5, 2006.
  5. Sajal  Das  and  Basudeb  Basu,  “Transfer  Hydrogenation  Using  Recyclable  Polymer Supported Formate (PSF): Efficient and Chemoselective Reduction of Nitroarenes” 7th National Symposium in Chemistry(NSC–7), CRSI, held at Indian Association for the Cultivation of Science, Kolkata, Feb. 4–6, 2005.

Oral Presentation:

  1. An invited talk on “Regio-selective Functionalization of Activated Pyridine & Pyrazine via Addition & Cross-coupling ReactionGour College, Malda, 2011, November 14th.
  2. An invited talk on “Synthesis of functionalized heterocycles using Grignard Reagents” Queens College, City University New York, December2014.
  3. Oral Presentation on “Synthesis of 2-Azafluorenone from isoxazole via Pd-catalyzed tandem reactionBurdwan University, February 5, 2016.