Patents

1. Development of Efficient Tribromides as Versatile Fine Dearomatization Reagents, Granted on Date: 10-11-2023, Patent No. 468285
2. Title: “A portable kit for visible light photodynamic inactivation of microbes and method thereof”, Provisional Application No. 202421010243, Date/Time 2024/02/14 17:13:25

58. Riboflavin Photocatalyzed Dearomative Spiro-Etherification of Naphthols, Nabakumar Bera, Bhabani Sankar Lenka, Burkhard König*, and Debayan Sarkar*,J. Org. Chem. 2023, 88, 13, 7977–7987,https://doi.org/10.1021/acs.joc.2c03037

57.Photoredox Catalyzed Thiocyanative Cyclization of Biaryl Ynones to Thiocyanated Spiro[5.5]trienones: An External Oxidant and Transition-Metal Free Approach, Shantanu Samanta,Debayan Sarkar,Chem Photo Chem 2023, https://doi.org/10.1002/cptc.202200335

56.Photo-redox Catalyzed C-S and C-C Bond Forming Cascade Cy-clization/Dearomatization of Biaryls: Sustainable Route to Func-tionalized Spirocyclohexa[5.5] and [4.5]trienones, Barnali Roy, Debayan Sarkar,ChemRxiv 2023, https://doi.org/10.26434/chemrxiv-2023-8xsbj

55.Photosensitizer Free Visible Light Synthesis of Multifunctional Coumarins from Trans-hydroxy acrylates, Niladri Sekhar Roy, Biswajit Das,Debayan Sarkar*ChemRxiv 2022,https://doi.org/10.26434/chemrxiv-2022-m6nv8-v2

54.Temperature-Controlled Chemoselective Synthesis of Multisubstituted 4-Alkynyl/trans 4-Alkenyl Coumarins, Sushree Ranjan Sahoo, Biswajit Das, Debayan Sarkar*,Hans Reuter, J. Org. Chem. 2022, 87, 21, 13529–13541,https://doi.org/10.1021/acs.joc.2c00994

53.Synthetic attempts toward α-tocopherol—An overview, Subhradip Kundu, Debayan Sarkar Journal of Heterocyclic Chemistry,2022,https://doi.org/10.1002/jhet.4565

52. Introducing C2–Asymmetry in Chromans – A Brief Story,  Subhradip Kundu, Sangita Bishi, Debayan Sarkar* New Journal Of Chemistry, 2022 , https://doi.org/10.1039/D2NJ00944G

51. Unprecedented Rearrangement of β-difluoroboryloxy Ethers- A Route to C-2 alkyl-chromenones Sushree Ranjan Sahoo, Debayan Sarkar*, Prathap Somu, Subhankar Paul and Peter Lönnecke Synlett 2022, DOI: 10.1055/a-1833-8927

50. Empowering Visible Light Catalysis: Brominative Dearomatizationof Biaryl Ynones. Barnali Roy, Puspendu Kuila, Debayan Sarkar* ChemRxiv 2022 ,https://doi.org/10.26434/chemrxiv-2022-dccgz

49. Gold(I) Catalyzed Efficient Synthesis of Heterocycles via Allene Oxide from Propargylic Alcohols J. J. Org. Chem 2022 ( Accepted Article) Bera Nabakumar; Samanta, Shantanu; Sarkar, Debayan,https://doi.org/10.1021/acs.joc.2c00780

48. Stereoselective Synthesis of Oxacycles via Ruthenium Catalyzed Atom-Economic Coupling of Propargyl Alcohols and Michael Acceptors  J. Org. Chem 2021, 86, 23, 16369-16395  Nabakumar; Samanta, Shantanu; Debayan Sarkar,https://doi.org/10.1021/acs.joc.1c01758

47. Gold(III) Catalyzed Synthesis of 2,5-disubstituted Furans from substituted 5-methoxyhex-3-yn-2-ols – Mechanistic Outlook– Sagarika Behera, Nabakumar Bera, Debayan Sarkar* Synthetic Communications 2021; 51;  3090-3098, https://doi.org/10.1080/00397911.2021.1961274

46. Synthetic Attempts Towards Eminent Anti-Viral Candidates of SARS-CoV. Subhradip Kundu and Debayan Sarkar*. Mini-Reviews in Medicinal Chemistry, http://dx.doi.org/10.2174/1389557521666210712205655,

45. Organo-Acid Catalysed Synthesis of 2,2-Disubstituted Chromans and 1,1-Disubstituted Indanols/ Indenols. Sagarika Behera, Nabakumar Bera, Debayan Sarkar* Chemistry Select 2021, 6, 6193-6196, https://doi.org/10.1002/slct.202101384

44. Gold(III) Catalyzed Stereoselective Synthesis of Dialkyl dihydrofuran Acetates – Sagarika Behera, Nabakumar Bera, Debayan Sarkar* Tetrahedron 2021 Volume 95, 27 August 2021, 132367, https://doi.org/10.1016/j.tet.2021.132367

43. A combined experimental and theoretical analysis on the solid-state supramolecular assemblies of pent-2-ynol derivatives- Nabakumar Bera, Debayan Sarkar*, Saikat Kumar Seth* Journal of Molecular Structure 2021 Volume 1243, 5, 130813, https://doi.org/10.1016/j.molstruc.2021.130813

42. Ruthenium (VIII) Catalysed Dearomative Pyridyl C-X activation- Direct Synthesis of N- Alkyl-2-pyridones – Biswajit Das, Nilendri Rout, Debayan Sarkar* Asian Journal of Organic Chemistry 2021, 10, 1786-1794, https://doi.org/10.1002/ajoc.202100258

41. “A Year Away to 100th Year of Vitamin E Synthesis”- Subhradip Kundu, Debayan Sarkar* Journal of Heterocyclic Chemistry 2021  , 58, 1741-1748, https://doi.org/10.1002/jhet.4309,

40. Ruthenium Catalyzed Step- economic Synthesis of Oxacycles Nabakumar Bera,  and Debayan Sarkar* JOC 2021 ,https://doi.org/10.1021/acs.joc.1c01758

39. Regioselective C(sp2) – C(sp3) Oxidative Bond Cleavage of 1-(1-hydroxyalkyl) naphthalen-2-ols: First Synthesis of 1-azido-halo-naphtahalene-2(1H)-ones  Barnali Roy, Manoj Kumar Ghosh and Debayan Sarkar* Israel Journal Of Chemistry 2021, 60, 327-331, https://doi.org/10.1002/ijch.202000082

38. Synthesis and Structural Anomaly of Xyloketals-Unique Benzoxacycles: A Review Barnali Roy,, Nilendri Rout, Puspendu Kuila,, Debayan Sarkar* Journal of Heterocyclic Chemistry 2021;58:8–27,

https://doi.org/10.1002/jhet.4152

37. Trapping a Boron-enolate, C1-C10 bond Migration: Concept to Re-ality and Anti-cancer Properties

Sushree Ranjan Sahooa, Debayan Sarkar* Tetrahedron Letters (Accepted Article) 2021 ,

36. Gram Scale Synthesis of alpha-cyanoalkylboronic esters via Direct B-B and C-N Bond Cleavage. Sushree Ranjan Sahooa, Debayan Sarkar* Synthetic Communications 2020 50 3308-3313,

35. Copper(I) Catalyzed Synthesis of Selanyl methylene 4-chromanol and aurone Derivatives, Sushree Ranjan Sahoo and Debayan Sarkar* Organic and Biomolecular Chemistry  2020, 18, 4619-4627, https://doi.org/10.1039/D0OB00632G

34. Direct Synthesis of Regioselective α-allyl α-selanyl Ketones and selanyl tetra-hydrofurans , Sushree Ranjan Sahoo, Rajat Kumar Singh and Debayan Sarkar* Tetrahedron Letters 2020, 61, 151290, https://doi.org/10.1016/j.tetlet.2020.151920

33. Revisiting the addition of Insitu Nucleophiles to Allenic Ketones: An Entry Towards Synthesis of Benzodioxins. Sushree Ranjan Sahoo and Debayan Sarkar*  European Journal of Organic Chemistry 2020, 11, 1727-1731, https://doi.org/10.1002/ejoc.202000076

32. Stereoselective synthesis of para-quinone monoketals through tri-bromide (TBr) mediated oxidative dearomatization of phenols. Sushree Ranjan Sahoo and Debayan Sarkar*   Tetrahedron Letters ,2020 (cover page  Article),  61, 151646, https://doi.org/10.1016/j.tetlet.2020.151646

31. Stereoselective Synthesis of Spiro‐Azacycles Through Tri‐bromide Mediated Oxidative Dearomatization. Sushree Ranjan Sahoo and Debayan Sarkar*   European Journal of Organic Chemistry 2020, 397-401, https://doi.org/10.1002/ejoc.201901676

30.Copper(I) Catalyzed Synthesis of Functionalized N-Fused Indolizinone from Substituted Pyridine Homologated-ynones, Sushree Ranjan Sahoo Debayan Sarkar*, Journal of Organic Chemistry 2020, 85, 2, 902-911, https://doi.org/10.1021/acs.joc.9b02853

29. Visible Light Catalysed Selenylative Intramolecular Dearomative Carbo-spirocyclisation (IDCS) of Homologated-ynones. Sushree Ranjan Sahoo and Debayan Sarkar*, European Journal of Organic Chemistry 2020, 7, 891-896, https://doi.org/10.1002/ejoc.201901821

28.  [2+2] Photochemical Cycloaddition in the Synthesis of Natural Products and Related Molecules DebayanSarkar, Nabakumar Bera and Subrata Ghosh European Journal of Organic Chemistry 2020,10, Special Issue: Photochemical Synthesis 1310-1326, https://doi.org/10.1002/ejoc.201901143

27. Copper(I) Catalysed Direct Synthesis of 2-Methylene-4-Chromanols Debayan Sarkar* Sagarika Behera,Tetrahedron Letters Volume 61, Issue 1, 2020, 151341, https://doi.org/10.1016/j.tetlet.2019.151341

26. Redox Economic Synthesis of Trisubstituted Piperidones via Ruthenium Catalyzed Atom-economic Couplings of N-protected 1,5-Aminoalcohols and Michael Acceptors  Barry M Trost*, Debayan Sarkar*, Nabakumar Bera Advanced Synthesis and Catalysis 2019, 361, 24, 5648-5653. (Most Downloaded Paper 2020), https://doi.org/10.1002/adsc.201900881

25. Ruthenium (VIII) catalysed ipso-Dearomative Spiro-etherification and Spiro-amidation of Phenols Debayan Sarkar* and Nilendri Rout  Organic Letters 2019 21, 11, 4132-4136, https://doi.org/10.1021/acs.orglett.9b01322

24. Monohydchloride Promoted Synthesis of Functionalised Isoxazoles and Pyrazoles from Allenic Ketones – First Synthesis of (Z)-2-methyl -7H benzo[b]pyrazolo[5,1-d][1,5]oxazocines,Debayan Sarkar* and Sushree Ranjan Sahoo  European Journal of Organic Chemistry 2019 , 2035-2049, https://doi.org/10.1002/ejoc.201900008

23. Controlling Stereoselectivity in Tribromide Mediated Oxidative Dearomatisations – Tuning The Synthesis of Selective Spirofurano-naphthalones, Debayan Sarkar *, Puspendu Kuila, Devasish Sood 2019 European Journal of Organic Chemistry 2019,34, 5894-5904, https://doi.org/10.1002/ejoc.201900974

22. Book Chapter on “ Xyloketals- Unique Benzoxacycles” – in Studies in Natural Product Chemistry (Elsevier Publishers) 2018- Debayan Sarkar and Nilendri Rout

21. PTAB Mediated Open Air Synthesis of Sulfonamides, Thiosulfonates and Symmetrical Disulfanes,Debayan Sarkar*  ,Manoj Kumar Ghosh and Nilendri Rout Tetrahedron Letters 2018, 59, 2360-2364, https://doi.org/10.1016/j.tetlet.2018.05.017

20. Rhodium-catalyzed Insertion Reaction of PhP Group of Pentaphenylcyclopentaphosphine with Acyclic and Cyclic Disulfides. M. Arisawa, K.Sawahata, T. Yamada, Debayan Sarkar, M.Yamaguchi ,Organic Letters 2018 , 20(4), 938-941, https://doi.org/10.1021/acs.orglett.7b03825

19. Stereoselective Synthesis of Heliannuol G. Debayan Sarkar* and Manoj Kumar Ghosh. Tetrahedron Letters 2017, 58, 4336-4339 , https://doi.org/10.1016/j.tetlet.2017.09.081

18. “Atom – Economic Palladium Carbon Catalysed de novo      synthesis of Tri- substituted Nicotinonitriles” – Debayan Sarkar*, Nilendri Rout, Manoj Kumar Ghosh, SantanabGiri, K. Neue and H. Reuter. Journal of Organic Chemistry,  2017, 82, 9012-9022, https://doi.org/10.1021/acs.joc.7b01332

17. “A Jack of Trio”- Robust One-pot Metal free Oxidative Amination, Azidation and Peroxidation of Phenols. Debayan Sarkar*, M.K.Ghosh, Nilendri Rout, PuspenduKuila New Journal Of Chemistry, 2017, 41, 3715—3718, https://doi.org/10.1039/C7NJ00169J

16. Facile TMSOI CatalysedStereoselective Synthesis of 2-Methylene Selanyl-4-Chromanols and Anti-Cancer Activity,Debayan Sarkar*SagarikaBehera, Sarbani Ashe, BismitaNayak, Saikat Kumar Seth 2017, Tetrahedron 51, 7200-7209, https://doi.org/10.1016/j.tet.2017.11.007

15. Radical-induced expeditious stereoselectivesynthesis of 2-alkyl 3-allyl trans-2,3-dihydrobenzofurans (TADHBs),Debayan Sarkar*andSusheeranjanSahoo 2018 Synthetic Communications  48, 5 , 574-581 ,https://doi.org/10.1080/00397911.2017.1415357

14. Story of Heliannuols – A Unique Class of Structurally Diverse Benzoxacycles, Synthesis and Structural Revision. Debayan Sarkar*,Manoj Kumar Ghosh  2018 Current Organic Chemistry  22, 18-56, https://doi.org/10.2174/1385272822666171222150107

13. Phenyl TrimethylAmmonium Tribromide Mediated Robust One-pot Synthesis of Spiroxacycles– an Economic Route- Stereoselective Synthesis of Spiroxadieneones. Debayan Sarkar*, M.K.Ghosh, Nilendri Rout Organic and Biomolecular Chemistry, 2016, 14, 7883-7886 , https://doi.org/10.1039/C6OB01116K

12. PhSeBr Mediated Hydroxylative Oxidative Dearomatization of Naphthols– An Open Air Facile One-Pot Synthesis of Ketols. Debayan Sarkar*, M.K.Ghosh, Nilendri Rout,  RSC Advances , 2016, 6, 26886. https://doi.org/10.1039/C6RA00036C

11. Synergestic interactions of surfactant blends in aqueous medium are reciprocated in non-polar medium with improved efficacy as a nano-reactor. SoumikBardhan, Kaushik Kundu, BarnaliKar, Gulmi Chakraborty, Dibbendu Ghosh, Debayan SarkarSajal Das, SanjibSenapati, Swapan Kumar Saha and Bidyut K Paul 2016, RSC Advances, 6, 55104-55116, https://doi.org/10.1039/C6RA06776J

10. Unprecedented C-Methylation at 2- Position of 2-carboxy-4-chromanones – A Case Study with Corey-Chaykovsky Reagent. S. Ghosh, D.Sarkar, M.K.Ghosh, I.Chakraborty Synlett 2014, 25, 2649-2653, 10.1055/s-0034-1379203

9. Biomimetic type approach to the tricyclic core of xyloketals. Application to a short, stereocontrolled synthesis of alboatrin and first synthesis of xyloketal G.  Debayan Sarkar  andRamanathapuram V. Venkateswaran* Tetrahedron 2011, 67, 4559-4568, https://doi.org/10.1016/j.tet.2011.04.084

8. Synthesis of bruguierolA employing ring closing metathesis. Debayan Sarkar and Ramanathpuram V. Venkateswaran* Tetrahedron Letters, 2011, 52, 3232 – 3233,https://doi.org/10.1016/j.tetlet.2011.04.050

7. Insight into supramolecular self assembly directed by weak interactions in acetophenone derivatives : crystal structures and Hirshfield surface analyses. Saikat Kumar Seth, Debayan Sarkar, Amalesh Roy and TanushreeKar*  CrystEngComm, 2011, 13, 6728-6741,https://doi.org/10.1039/C1CE05670K

6. Use of π – π forces to steer the assembly of chromone derivatives into hydrogen  bonded supramolecular layers: crystal structures and Hirshfield surface analyses.Saikat Kumar Seth, Debayan Sarkar and TanushreeKar*  CrystEngComm, 2011, 13, 4528 – 4535, https://doi.org/10.1039/C1CE05037K

5. On the Possibility of Tuning Molecular Edges to direct supramolecular self- assembly in coumarin derivatives through cooperative weak forces: crystallographic  and Hirshfield surface analyses.Saikat Kumar Seth, Debayan Sarkar, AtisDipankar Jana and TanushreeKar*  Crystal Growth & Design, 2011, 11, 4837-4849,https://doi.org/10.1021/cg2006343

4. Expeditious synthesis of helianane and C-10 halogenated heliananes employing ring-closing metathesis. SubirSabui, Subroto Ghosh, Debayan Sarkar, Ramanathapuram V. Venkateswaran* Tetrahedron Letters, 2009, 50, 4683-4684, https://doi.org/10.1016/j.tetlet.2009.06.001

3. A biomimetic type expedient approach to the tricyclic core of xyloketals. Application to a  short, stereocontrolled synthesis of alboatrin and a remarkable epi to natural isomerisation.  Debayan Sarkar, Subroto Ghosh, RamanathapuramV.Venkateswaran* Tetrahedron Letters, 2009, 50, 1431- 1434, https://doi.org/10.1016/j.tet.2011.04.084

2. Facile Aromatic Claisen  RearrangementCatalysed by Tin(IV) Chloride. Debayan Sarkar, Ramanathapuram V. Venkateswaran* Synlett, 2008, 05, 653- 654, 10.1055/s-2008-1042806

1. Total synthesis of alboatrin , a phytotoxic metabolite from verticilliumalboatrum. Bidyut Biswas, Debayan Sarkar, Ramanathapuram V. Venkateswaran* Tetrahedron, 2008, 64, 3212-3216. http://dx.doi.org/10.1016%2Fj.tet.2008.05.017

Books