Publications

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58. Rh(II)-Catalyzed Site-Selective Insertion of Quinoid Carbene into Quinoline N-Oxides to Synthesize METHOX-Inspired Heterobiaryls.

B. Sanyal, S. Sarkar, K. Chakraborty and R. Samanta* Org Lett. 2026 , 28, .

57. Rh(III)-Catalyzed Divergent Ring Remodelling of Oxindole with Diazo Compounds via Amide and C-H Bond Activation.

S. Das, D. Saha, and R. Samanta* Org Lett. 2026 , 28, 4366-4371.

56. Rh(II)-Catalyzed and Cu(I)-Mediated Synthesis of Furopyridones using N-Substituted Pyridones and Diazonaphthoquinones: Applications in Photophysical Studies

S. Sarkar, K. Chakraborty and R. Samanta* Chem Commun, 2025, 61, 19096-19099.

55. Ru(II)-Catalyzed Reactions of ortho-Hydroxy Enaminones with Diazonaphthoquinones: Synthesis of Unsymmetrical Biaryl Diols.

S. Kundu, M. Tantubay and R. Samanta* Org Lett. 2025, 27, 6368-6373.

54. Cu(II)-NHC Catalysed Insertion of Quinoid Carbenes into cis-Epoxides: Stereoselective Synthesis of trans-Dihydronaphthodioxine.

S. Bera, S. Pan and R. Samanta* Org Lett. 2025, 27, 1293-1298.

53. Ru(II)-Catalyzed [1,4]-Sigmatropic Rearrangement and Intramolecular Concerted SNAr of Aryl and Heteroarylthio Derivatives using Quinoid Carbene

S. Pan, Md. S. Sk, B. Sanyal, L. Roy and R. Samanta* ACS Catal. 2024, 14, 18419-18428.

52. Ru(II)- catalysed structural editing of oxindole to form C7-alkylated indole derivatives.

S. Das, R. Saha, S. Bhadra, and R. Samanta* Org Lett. 2024, 26, 8051-8056.

51. Recent Progress on Transition Metal Catalyzed Macrocyclizations Based on C-H Bond Activation at Heterocyclic Scaffolds

S. Das, T. K. Pradhan* and R. Samanta* Chem. Asian J. 2024,19, e202400397. (Invited review in special issue of "Young Organic Talent in India"

50. Rh(II)-Catalysed N2-Selective Arylation of Benzotriazoles and Indazoles using Quinoid Carbenes via 1,5-H Shift

S. Sarkar, S. Bhunya, S. Pan, A. Datta, L. Roy* and R. Samanta* Chem Commun, 2024, 60, 4727-4730.

Selected as "top 25% most downloaded paper from June 2024".

49. Cu-Catalyzed functionalization of Heterocycles through C-H Activations

S. Pan and R. Samanta Topics in Heterocyclic Chemistry; Sharma, U. and Maiti, D., Ed.; Springer Nature, 2024.

(Book Chapter)

48. Recent Progress in Copper-Catalysed C-C Bond Formations via C(sp2)-H Insertions Using Diazo and Related Compounds

S. Bera, S. Jana and R. Samanta* . Synthesis. 2024, 56, 29-46. (Invited Review)

47. Weakly Coordinating tert-Amide Assisted Rh(III)-Catalyzed C4-Cyanation of Indoles: Application in Photophysical Studies

S. Sarkar#, A. Biswas#, S. Das, B. Sanyal, R. Sahoo and R. Samanta* Chem Commun, 2023, 59, 11200-11203.

(#contributed equally)

46. Rh(II)-Catalyzed Synthesis of N-Aryl 2-Pyridone using 2-Oxypyridine and Diazonaphthoquinone via 1,6-Benzoyl Migratory Rearrangement

S. Pan, S. Kundu and R. Samanta* . Org. Lett. 2023, 25, 2873–2877.

45. Pd(II)-Catalyzed Oxidative Naphthylation of 2-Pyridone through N-H/C-H Activation using Diarylacetylene as Uncommon Arylating Agent

S. Bera#, A. Biswas#, J. Pal, L. Roy, S. Mondal and R. Samanta* Org Lett. 2023, 25, 1952-1957. (contributed equally)

TOC_OL_pyridone naphthylation 2_edited_e

44. Rh(III)-Catalyzed Weakly Coordinating 2-Pyridone Directed Oxidative Annulation using Internal Alkynes: A Reversal in Selectivity

S. Bera, S. Sarkar, J. Pal and R. Samanta* Org Lett. 2022, 24, 8470-8475.

43. Weakly Coordinating tert-Amide Assisted Ru(II)-Catalyzed Synthesis of Azacoumestans via Migratory Insertion of Quinoid Carbene: Application in Total Synthesis of Isolamellarins

S. Sarkar and R. Samanta* Org Lett., 2022, 24, 4536-4541 .

42. Cu(II)-Catalyzed Construction of Heterobiaryls using 1-Diazonaphthoquinones: A General Strategy for the Synthesis of QUINOX and Related P,N Ligands

A. Biswas, S. Pan and R. Samanta* Org Lett., 2022, 24, 1631-1636.

Highlighted in "ChemistryViews".

41. Rh(III)-Catalyzed Mild Straightforward Synthesis of Quinoline-Braced Cyclophane Macrocycles via Migratory Insertion

B. Ghosh, S. Bera, P. Ghosh and R. Samanta* Chem Commun, 2021, 57, 13134-13137.

40. Transition Metal Catalysed Direct Construction of 2–Pyridone Scaffolds Through C–H Bond Functionalizations

S. Pan, S. Sarkar, B. Ghosh and R. Samanta* Org. Biomol. Chem. 2021. 19, 10516-10529. (Invited review)

39. Transition metal catalyzed Site-Selective C-H Bond Arylation of Arenes/Heteroarenes using Quinone-Diazides

S. Bera and R. Samanta Handbook of C-H Functionalization; Maiti, D., Ed.; Wiley-VCH:Weinheim, 2021. (Book Chapter)

38. Iridium(III)-Catalyzed Intermolecular Mild N-Arylation of Aliphatic Amides Using Quinoid Carbene: A Migratory Insertion-Based Approach

S. Bera, S. Roy, S. C. Pal, A. Anoop* and R. Samanta* ACS Catal. 2021, 11, 10847–10854.

37. Recent Quinone Diazide Based Transformations via Metal-Carbene Formation

S. Bera, S. Sarkar and R. Samanta* New J. Chem. 2021, 45, 10135-10149.

'Invited Review' in the special issue of "Emerging Investigators 2021".

36. Straightforward Construction and Functionalizations of Nitrogen Containing Heterocycles through Migratory Insertion of Metal-Carbenes/Nitrenes

S. Bera, A. Biswas and R. Samanta* Chem. Rec. 2021, 51, 3411-3428.

Invited "Personal Account" in the special issue on "Transition Metal Catalysis".

35. A Directing Group Free Pd(II)-Catalysed Desulfitative C6-Arylation of 2-Pyridone using Arylsulfonyl Chloride

U. Karmakar and R. Samanta* Org. Biomol. Chem. 2020, 18, 8079-8083.

34. Transition Metal Catalysed Direct C‐H Bond Functionalizations of 2‐Pyridone Beyond C3‐Selectivity

A. Biswas, S. Maity, S. Pan and R. Samanta* Chem. Asian J. 2020, 15, 2092-2109. (Invited Review)

33. Rh(III)-Catalyzed Tandem Indole C4-Arylamination/Annulation with Anthranils: Access to Indoloquinolines

and its Application in Photophysical Studies

A. Biswas, S. Bera, P. Poddar, D. Dhara and R. Samanta* Chem Commun, 2020, 56, 1440-1443.

32. Rh(III)-Catalyzed Straightforward Synthesis of Highly Substituted 2-Pyridones using Fluorinated Diazomalonate

D. Das, G. Sahoo, A. Biswas and R. Samanta* Chem. Asian J. 2020, 15, 360-364.

"Invited Article" for a special issue on "ICOC 2020".

4 phenyl pyridone_Chem Asian J_edited.jp

31. Rh(III)-Catalyzed Straightforward Arylation of 8-Methyl/ Formyl Quinolines using Diazo Compounds

B. Ghosh and R. Samanta* Chem. Commun. 2019, 55, 6886-6889.

30. Pd(II)-Catalyzed Direct Sulfonylation of Benzylamines using Sodium Sulfinates

U. Karmakar and R. Samanta* J. Org. Chem. 2019, 84, 2850-2861.

29. Rh(III)-Catalyzed Straightforward Synthesis of Benzophenanthroline and Benzophenanthrolinone Derivatives using Anthranils

A. Biswas, S. Sarkar and R. Samanta* Chem. Eur. J. 2019, 25, 3000-3004.

Selected as "hot paper".
Selected as "top 10% most downloaded paper from January 2018-December 2019".

28. Direct Pd(II)-Catalyzed Site-Selective C5-Arylation of 2-Pyridone Using Aryl Iodides

S. Maity, D. Das, S. Sarkar and R. Samanta* Org. Lett. 2018, 20, 5167-5171.

27. Rh(III)-Catalyzed Direct C8-Arylation of Quinoline N-Oxides using Diazonaphthalen-2(1H)-ones: A Practical Approach towards 8-azaBINOL

B. Ghosh, A. Biswas, S. Chakraborty and R. Samanta* Chem. Asian. J. 2018, 13, 2388-2392.

"Invited Article" for a special issue on "Homogeneous Catalysis from Young Investigators in Asia".

26. Rhodium(III)-Catalyzed Regioselective Direct C4-Alkylation and C2-Annulation of Indoles: Straightforward Access to Indolopyridone

A. Biswas and R. Samanta* Eur. J. Org. Chem. 2018, 1426-1436.

Selected as "top 10% most downloaded paper from January 2018-December 2019".

25. Iridium(III) Catalyzed Regiocontrolled Direct Amidation of Isoquinolones and Pyridones

D. Das and R. Samanta* Adv. Synth & Catal. 2018, 360, 379-384.

24. Regiocontrolled Direct C4 and C2-Methyl Thiolation of Indoles under Rhodium Catalyzed Mild Conditions

S. Maity, U. Karmakar and R. Samanta* Chem. Commun. 2017, 53, 12197-12200.

Selected as "top 10% highly cited paper for the year 2018".

23. A Mild Rhodium Catalyzed Direct Synthesis of Quinolones from Pyridones: Application in the Detection of Nitroaromatics

A. Biswas, D. Giri, D. Das, A. Dey, S. K. Patra* and R. Samanta* J. Org. Chem. 2017, 82, 10989-10996.

22. Copper Catalyzed Direct, Regioselective Arylamination of N-Oxides: Studies to Access Conjugated π-Systems

A. Biswas, U. Karmakar, S. Nandi and R. Samanta* J. Org. Chem. 2017, 82, 8933-8942.

21. Iridium Catalysed Cascade Synthesis of Oxindoles using Diazo Compound: A Quick Entry to the C7-Functionalized Oxindoles

U. Karmakar, D. Das, and R. Samanta* Eur. J. Org. Chem. 2017, 2780-2788.

20. Rhodium(III)-Catalyzed C6-Selective Arylation of 2-Pyridones and Related Heterocycles Using Quinone Diazides: Syntheses of Hetero-Arylated Phenols

D. Das, P. Poddar, S. Maity, and R. Samanta* J. Org. Chem. 2017, 82, 3612-3621.

19. Copper Catalyzed Regioselective Cascade Alkylation and Cyclocondensation of Quinoline N-Oxides with Diazo esters: Direct Access to conjugated π-Systems

A. Biswas, U. Karmakar, A. Pal, and R. Samanta* Chem. Eur. J. 2016, 22, 13826-13830.

18. C6-Selective Direct Alkylation of Pyridones with Diazo Compounds under Rh(III)-Catalyzed Mild Conditions

D. Das, A. Biswas, U. Karmakar, S. Chand, and R. Samanta* J. Org. Chem. 2016, 81, 842-848.

Graduate & Postdoctoral Publications:

17. Oxidative Regioselective Amination of Chromones Exposes Potent Inhibitors of Hedgehog Signaling Pathway

R. Samanta, R. Narayan, J. O. Bauer, C. Strohmann, S. Sievers, A.P. Antonchick*

Chem. Commun. 2015, 51, 925-928.

16. Rhodium(III)-Catalyzed Direct Regioselective Synthesis of 7-Substituted Indoles

Z. Song, R. Samanta, A. P. Antonchick*

Org. Lett, 2013, 15, 5662-5665.

15. Metal-Free Oxidative Carbon-Heteroatom Bond Formation via C-H Bond Functionalization

R. Samanta, K. Matcha and A. P. Antonchick*

Eur. J. Org. Chem., 2013, 5769-5804. [Invited mini-riview; one of the top 25 most accessed articles. Selected as free-access-review]

14. Rhodium(III) Catalyzed Direct Oxidative Cross Coupling at C5 Position of Chromones with Alkenes

R. Samanta, R. Narayan and A. P. Antonchick*

Org Lett., 2012, 14, 6108-6111.

13. Organocatalytic, Intermolecular, Oxidative C-H Bond Amination and hydrazination of simple arenes at Ambient Temperature.

R. Samanta, J. O. Bauer, C. Strohmann and A. P. Antonchick*

Org Lett., 2012, 14, 5518-5521.

One of the most read articles in 10/2012–11/2012

12. Metal-Free Direct Oxidative Intermolecular Multiple C–H Bond Functionalizations at Ambient Temperature Assisted by Cascade Selective Formation of C–C and C–N Bonds

R. Samanta, J. Lategahn and A. P. Antonchick*

Chem Commun 2012, 48, 3194-3196.

11. Metal-Free Electrocyclization at Ambient Temperature: Synthesis of 1-Aryl carbazoles.

R. Samanta, K. Kulikov, C. Strohmann and A. P. Antonchick*

Synthesis 2012, 44, 2325-2332. (Invited Feature Article)

One of the 10 most accessed articles in 8/2012.

10. Metal Free Oxidative Amination at Ambient Temperature

Rajarshi Samanta and Andrey P. Antonchick*

Synlett 2012, 23, 809-813. (Invited Highlight)

One of the 10 most accessed articles in 3/2012–5/2012

9. Organocatalytic, Oxidative, Intramolecular C-H Bond Amination and Metal-free Cross-Amination of Unactivated Arenes at Ambient Temperature

A. P. Antonchick*, R. Samanta, K. Kulikov, J. Lategahn.

Angew. Chem. 2011, 123, 8764-8767; Angew. Chem. Int. Ed. 2011, 50, 8605-8608.

Selected as “hot paper” by the editors

Highlighted in SYNFACTS (2011, 1129).

One of the most accessed articles in August, 2011 and one of the most accessed articles in first year after publication.

8. Palladium-Catalyzed Double C-H Activation Directed by Sulfoxides in the Synthesis of Dibenzothiophenes.

R. Samanta and A. P. Antonchick*

Angew. Chem. 2011, 123, 5323 – 5326; Angew. Chem. Int. Ed. 2011, 50, 5217 – 5220.

Highlighted in SYNFACTS (2011, 836).

7. A Stereoselective construction of quaternary chiral centers using Ti(III)-mediated opening of 2,3-epoxy alcohols: studies directed toward the synthesis of penifulvins

Tushar Kanti Chakraborty*, Amit Kumar Chattopadhyay, Rajarshi Samanta, Ravi Sankar Ampapathi.

Tetrahedron Lett. 2010, 51, 4425-4428. [Cited in Organic Chemistry Highlights]

6. A radical mediated approach to the formal total synthesis of (+)-Sch 642305.

Tushar Kanti Chakraborty*, Rajarshi Samanta, Pulukuri Kiran Kumar

Tetrahedron 2009, 65, 6925-6931.

5. A 1:2 copper (II) – tripeptide complex for DNA binding and cleavage agent at physiological conditions.

Pulimamidi R. Reddy*; Pallerla Manjula; Tushar K.Chakraborty and Rajarshi Samanta.

Chemistry & Biodiver. 2009, 6, 764-773.

4. Ti(III)-mediated radical cyclization of β-aminoacrylate containing epoxy alcohol moieties: Synthesis of highly substituted azacycles.

Tushar Kanti Chakraborty*; Rajarshi Samanta; Saumya Roy and Balasubramanian Sridhar

Tetrahedron Lett. 2009, 50, 3306-3310. [Cited in Organic Chemistry Highlights]

3. Studies on radical cyclization of 2,3- epoxy alcohols containing a β-(alkoxy)acrylate moiety using Cp2TiCl.

Tushar Kanti Chakraborty*; Rajarshi Samanta; Krishnan Ravi kumar

Tetrahedron Lett. 2007, 48, 6389-6392. [Cited in Organic Chemistry Highlights]

2. Radical mediated opening of 2,3- epoxy alcohols using Cp2TiCl : Stereoselective construction of quaternary chiral centers.

Tushar Kanti Chakraborty*; Rajarshi Samanta; Sanjib Das.

J. Org. Chem. 2006, 71, 3321-3324. [Cited in of Organic Chemistry Highlights].

1. Total synthesis of stevastelin B3.

Tushar Kanti Chakraborty*; Subhash Ghosh; Pasunoori Laxman; Shantanu Dutta; Rajarshi Samanta.

Tetrahedron Lett. 2005, 46, 5447-5450. [Top 25 hottest articles, July-Sep.2005]