Journals 

Independent Research:

2025

59.  Gopal Chakrabortty, Surya K, Swati Singh, Rositha Kuniyil* and Sudipta Raha Roy*, Photoexcited Palladium-Catalyzed C–N Bond Formation: A Unified Approach for N-Arylation of NH-Sulfoximines . Organic Letters, 2025, 27, ASAP. (Link for PDF) 

58.  Vishali Pathania,   Mall Akanksha#,   Shubhangi Majumdar#,   Pramit Kumar Chowdhury  and  Sudipta Raha Roy*, Insights into the Excited State of Phenalenyl-Based Photocatalyst for Facile Divergent Synthesis of Sulfoxides and Sulfones. Green Chemistry, 2025, 27, 11500-11509. (# Contributed equally) (Link for PDF) 

57.  Anukriti Singhal#, Kajal Tiwari#, Swagata Choudhury# and Sudipta Raha Roy*, Photoinduced Core Skeletal Editing: Streamlined Strategies for the Synthesis of Diverse Cyclic Scaffolds. Synlett, 2025, DOI: 10.1055/a-2640-2657. (# Contributed equally)  (Link for PDF) (Invited Review)

56. Vishali Pathania, Gaurav Kumar and Sudipta Raha Roy*, Photoinduced Direct Formylation of Anilines: Aerobic Oxidation Using an Odd Alternate Hydrocarbon Phenalenyl-Based Photocatalyst. Journal of Organic Chemistry, 2025, ASAP. (Link for PDF)

55.  Gopal Chakrabortty, Partha Pratim Sen and Sudipta Raha Roy*, Cobalt catalysed cross-dehydrogenative coupling of indoles: a photoinduced ligand to metal charge transfer process . Chemical Communication, 2025, 61, 1898-1901. (Link for PDF) 

2024

54. Swagata Choudhury and Sudipta Raha Roy*, Photoinduced Single Electron Transfer via EDA Complexation Enables Decarbonylative C(sp2)–S Bond Formation. Organic Letters, 2024, 26, 10158–10164. (Link for PDF) 

53.  Kirandeep Bhagat, Anirban Das, Neha Dagar, Kandalam V. Ramanujachary, Samuel E. Lofland, Sudipta Raha Roy, and Ashok K. Ganguli*, Investigation of Structural, Photoelectrochemical, Magnetic and Catalytic Properties of LaSrNiO4, LaSrCuO4, LaSrCoO4 Nanoparticles Synthesised by Reverse Micellar Route.  ChemistrySelect, 2024, 9, e202402494. (Link for PDF)

52.  Swati Singh, Gopal Chakrabortty, Kajal Tiwari, Neha Dagar and Sudipta Raha Roy*, Shining light for organophotocatalysed site-selective sulfonylation of anilides.  Organic & Biomolecular Chemistry, 2024, 22, 7690-7695.  (Link for PDF) (Invited Article)

51.  Rashmi Prakash, Partha Pratim Sen, Vishali Pathania and Sudipta Raha Roy*, Photocatalytic Proficiency of Cinnoline Moiety for Cross-Coupling Reactions: A Two in One Photocatalyst. Organic Letters, 2024, 26, 5923–5927. (Link for PDF) 

50.  Neha Dagar,  Swati Singh and Sudipta Raha Roy*, Organoselenium Catalyzed Electrochemical Cascade Cyclization: An Access to Naphthofuran-2-carboxaldehyde. Advanced Synthesis & Catalysis, 2024, 366, 2544–2550. (Link for PDF)

49. Vishali Pathania and Sudipta Raha Roy*, Phenalenyl-Based Photocatalyst for Bioinspired Oxidative Dehydrogenation of N-Heterocycles and Benzyl Alcohols. Journal of Organic Chemistry, 2024, 89, 4145–4155. (Link for PDF)

48.   Partha Pratim Sen, Nayan Saha and Sudipta Raha Roy*, Investigating the Potency of a Phenalenyl-Based Photocatalyst under the Photoelectrochemical Condition for Intramolecular C–S Bond Formation.  ACS Catalysis, 2024, 14, 907–920. (Link for PDF) 

47.  Vishal Jyoti Roy, Janardan Chakraborty and Sudipta Raha Roy*, Catalytic π–π Interactions Triggered Photoinduced Synthesis of Biaryls.  Organic Letters, 2024, 26, 183-187. (Link for PDF)

2023

46. Komal Dalal, Vishal Jyoti Roy, Kamal Nayan Sharma, Sudipta Raha Roy, Anirban Das* and Ashok Kumar Ganguli*, Synthesis of hollow shell TiO2 nanostructures enclosing Au nanoparticles and evaluation of their photoelectrocatalytic activity.  Journal of Solid State Chemistry, 2024, 330, 124484-15388. (Link for PDF)

45. Partha Pratim Sen#, Vishali Pathania# and Sudipta Raha Roy*, Unveiling the Potency of Phenalenyl-based Photocatalyst for the Intramolecular Dehydrogenative Lactonization.  Organic Chemistry Frontiers, 2024, 11, 106-112. (# Contributed equally to this work) (Link for PDF) (Invited Article) (Editor's Choice: Highlight from India)

44. Vishal Jyoti Roy#, Neha Dagar#, Swagata Choudhury and Sudipta Raha Roy*, Unified Approach to Diverse Heterocyclic Synthesis: Organo-Photocatalyzed Carboacylation of Alkenes and Alkynes from Feedstock Aldehydes and Alcohols.  Journal of Organic Chemistry, 2023, 88, 15374-15388. (# Contributed equally to this work) (Link for PDF)

43.  Swati Singh, Gopal Chakrabortty and Sudipta Raha Roy*, Skeletal Rearrangement through Photocatalytic Denitrogenation: An Access to C-3 Aminoquinolin-2(1H)-ones. Chemical Science, 2023, 14, 12541-12547. (Link for PDF)

42. Vishali Pathania and Sudipta Raha Roy*, Photoinduced Copper(II) Catalyzed Decarboxylative Homocoupling of Arylpropiolic Acids: A Facile Access to the Symmetrical 1,3-Diynes. Asian Journal of Organic Chemistry, 2023, Early View. (Link for PDF) (Invited Article)

41. Partha Pratim Sen and Sudipta Raha Roy*, Harnessing the Energy of Visible Light to Promote LMCT of Cu(II) Species for Intramolecular Dehydrogenative Lactonization of Biaryl-2-carboxylic Acids. Organometallics, 2023, 42, 1658–1666. (Link for PDF) 

40. Partha Pratim Sen and Sudipta Raha Roy*, Introducing Phenalenyl-Based Organic Lewis Acid as a Photocatalyst to Facilitate Oxidative Azolation of Unactivated Arenes . Organic Letters, 2023, 25, 1895–1900. (Link for PDF) 

39. Neha Dagar, Swati Singh and Sudipta Raha Roy*, Photoinduced Cerium Mediated Decarboxylative Alkylation Cascade Cyclization of N-arylacrylamides and N-acryl-2-aryl benzimidazoles. Chemistry An Asian Journal, 2023, Accepted Article . (Link for PDF) 

38. Vishal Jyoti Roy and Sudipta Raha Roy*, Light-Induced Activation of C–X Bond via Carbonate-Assisted Anion−π Interactions: Applications to C–P and C–B Bond Formation. Organic Letters, 2023, 25, 923-927. (Link for PDF)  (One of the Most Read Article in February 2023) (Highlighted on Organic Chemistry Portal)

2022

37. Vishali Pathania, Vishal Jyoti Roy and Sudipta Raha Roy*, Transforming Non-innocent Phenalenyl to a Potent Photoreductant: Captivating Reductive Functionalization of Aryl Halides through Visible Light-Induced Electron Transfer Processes. Journal of Organic Chemistry, 2022, 87, 16550-16566 . (Link for PDF)

36.  Vishal Jyoti Roy, Vishali Pathania and Sudipta Raha Roy*, Making and Breaking of C-N Bonds: Applications in the Synthesis of Unsymmetric Tertiary Amines and α-Amino Acid Derivatives. Chemistry An Asian Journal, 2022, Accepted Article . (Link for PDF) 

35.  Swati Singh, Neha Dagar, Giriraj Pal and Sudipta Raha Roy*, Photoinduced radical cascade reactions for the thioalkylation of quinoxalin-2(1H)-one: An access to β-heteroaryl thioethers under metal and catalyst free condition. Green Chemistry, 2022, 24, 8460-8465 . (Link for PDF)

34.  Partha Pratim Sen, Vishal Jyoti Roy and Sudipta Raha Roy*, Electrochemical Activation of C-X Bond on Demand: An Access to Atom Economic Group Transfer Reaction Triggered by Non-Covalent Interaction. Journal of Organic Chemistry, 2022, 87, 9551-9564. (Link for PDF)

33.  Neha Dagar, Swati Singh and Sudipta Raha Roy*, Synergistic Effect of Cerium in Dual Photoinduced Ligand-to-Metal Charge Transfer and Lewis Acid Catalysis: Diastereoselective Alkylation of Coumarins. Journal of Organic Chemistry, 2022, 87, 8970-8982. (Link for PDF) 

32. Partha Pratim Sen#, Rashmi Prakash#, and Sudipta Raha Roy*, Electricity Induced Rhodium-Catalyzed Oxidative C–H/N–H Annulation of Alkynes with Arylhydrophthalazinediones. Organic Letters, 2022, 24, 4530-4535. (# Contributed equally to this work) (Link for PDF) 

31.   Swati Singh, Neha Dagar and Sudipta Raha Roy*, Photoinduced ligand to metal charge transfer enabling cerium mediated decarboxylative alkylation of quinoxalin-2(1H)-ones. Chemical Communication, 2022, 58, 3831-3834. (Link for PDF) (One of the Most Read Article in its First Year of Publication) 

30.  Vishal Jyoti Roy, Partha Pratim Sen and Sudipta Raha Roy*, Exploring Eosin Y as a Bimodular Catalyst: Organophotoacid Mediated Minisci-Type Acylation of N-Heteroarenes. Chemical Communication, 2022, 58, 1776-1779. (Link for PDF) (One of the Most Read Article in its First Year of Publication)

2021

29.  Vishal Jyoti Roy, Partha Pratim Sen and Sudipta Raha Roy*, Visible-Light-Mediated Cross Dehydrogenative Coupling of Thiols with Aldehydes: Metal-Free Synthesis of Thioesters at Room Temperature. Journal of Organic Chemistry, 2021, 86, 16965-16976. (Link for PDF) 

28.  Neha Dagar, Swati Singh and Sudipta Raha Roy*, Copper Catalyzed-TBHP/DTBP Promoted C(sp2)−H Bond Scission of Aldehydes: An Approach to Transform Aldehyde to Esters. Asian Journal of Organic Chemistry, 2021, 10, 2238-2245. (Link for PDF) 

27.  Partha Pratim Sen, Vishal Jyoti Roy and Sudipta Raha Roy*, Metal-free regioselective bromination of imidazo-heteroarenes: the dual role of an organic bromide salt in electrocatalysis. Green Chemistry, 2021, 23, 5687-5695. (Link for PDF) 

26.  Swati Singh, Neha Dagar and Sudipta Raha Roy*, Direct functionalization of quinoxalin-2(1H)-one with alkanes: C(sp2)–H/C(sp3)–H cross coupling in transition metal-free mode. Organic & Biomolecular Chemistry, 2021, 19, 5383-5394. (Link for PDF) 

25.  Neha Dagar, Partha Pratim Sen and Sudipta Raha Roy*, Electrifying Sustainability on Transition Metal‐Free Modes: An Eco‐Friendly Approach for the Formation of C−N Bonds. ChemSusChem., 2021, 14, 1229-1257. (Link for PDF)

24.  Swati Singh, Vishal Jyoti Roy, Neha Dagar,  Partha Pratim Sen and Sudipta Raha Roy*, Photocatalysis in Dual Catalysis Systems for Carbon-Nitrogen Bond Formation. Advanced Synthesis & Catalysis, 2021, 363, 937–979. (Link for PDF)

2020

23.  Partha Pratim Sen#, Neha Dagar#, Swati Singh, Vishal Jyoti Roy, Vishali Pathania and Sudipta Raha Roy*, Probing the versatility of metallo-electro hybrid catalysis: enabling access towards facile C–N bond formation. Organic & Biomolecular Chemistry, 2020, 18, 8994–9017. (#Contributed equally to this work) (Link for PDF) (Invited Review)

PhD and Postdoctoral Research: 

22.  Eugenio Gandolfo, Xinjun Tang, Sudipta Raha Roy and Paolo Melchiorre, Photochemical Asymmetric Nickel‐Catalyzed Acyl Cross‐Coupling. Angewandte Chemie International Edition, 2019, 58, 16854–16858. (Link for PDF)

21.  Luca Buzzetti, Alexis Prieto, Sudipta Raha Roy and Paolo Melchiorre, Radical-based C-C Bond-Forming Processes Enabled by the Photoexcitation of 4-Alkyl-1,4-dihydropyridines. Angewandte Chemie International Edition, 2017, 56, 15039–15043. (Link for PDF)

20.  Sudipta Raha Roy, Hendrik Eijsberg, Jeffrey Bruffaerts and Ilan Marek, Zirconocene Catalyzed Diastereoselective Carbometalation of Cyclobutenes. Chemical Science, 2017, 8, 334–339. (Highlighted on Synfacts, 2016, 12, 1187) (Link for PDF)

19.  Sudipta Raha Roy, Dorian Didier, Amir Kleiner and Ilan Marek, Diastereodivergent combined carbometalation − Zinc homologation – C-C fragmentation reactions for an efficient construction of allylic quaternary carbon stereocenters. Chemical Science, 2016, 7, 5989-5994. (Link for PDF)

18.  Kapileswar Seth, Sudipta Raha Roy, Asim Kumar and Asit K. Chakraborti, The palladium and copper contrast: a twist to products of different chemotypes and altered mechanistic pathways. Catalysis Science & Technology, 2016, 6, 2892–2896. (Link for PDF)

17.  Kapileswar Seth, Sudipta Raha Roy and Asit K. Chakraborti, Synchronous double C–N bond formation via C–H activation for a novel synthetic route to phenazine. Chemical Communication, 2016, 52, 922-925. (Link for PDF)

16.  Naisargee Parikh, Sudipta Raha Roy, Kapileswar Seth, Asim Kumar and Asit K. Chakraborti, ‘On-Water’ Multicomponent Reaction for the Diastereoselective Synthesis of Functionalized Tetrahydropyridines and Mechanistic Insight. Synthesis, 2016, 48, 547-556. (Highlighted on Synfacts, 2016, 12, 453) (Link for PDF)

15.  Sudipta Raha Roy, A. Nijamudheen, Anand Pariyar, Anup Ghosh, Pavan K. Vardhanapu, Prasun K. Mandal, Ayan Datta, and Swadhin K. Mandal, Phenalenyl in a Different Role: Catalytic Activation through the Nonbonding Molecular Orbital. ACS Catalysis, 2014, 4, 4307-4319. (Selected in the Virtual Issue Posts on Organocatalysis) (Link for PDF)

14.  Sudipta Raha Roy, Samaresh Chandra Sau and Swadhin K. Mandal, Chemoselective Reduction of the Carbonyl Functionality through Hydrosilylation: Integrating Click Catalysis with Hydrosilylation in One Pot. Journal of Organic Chemistry, 2014, 79, 9150–9160. (Highlighted on Organic Chemistry Portal) (Link for PDF)

13.  Samaresh Chandra Sau#, Sudipta Raha Roy# and Swadhin K. Mandal, One-Pot Consecutive Catalysis by Integrating Organometallic Catalysis with Organocatalysis. Chemistry – An Asian Journal, 2014, 9, 2806-2813. (# Contributed equally to this work)(Link for PDF)

12.  Kapileswar Seth, Sudipta Raha Roy, Damodara N. Kommi, Bhavin V. Pipaliya and Asit K. Chakraborti, Silver nanoparticle-catalysed phenolysis of epoxides under neutral conditions: Scope and limitations of metal nanoparticles and applications towards drug synthesis. Journal of Molecular Catalysis A: Chemical, 2014, 392, 164-172. (Link for PDF)

11.  Samaresh Chandra Sau, Sudipta Raha Roy, Tamal Kumar Sen, Dinesh Mullangi,  and Swadhin K. Mandal, An Abnormal N-Heterocyclic Carbene Copper (I) Complex in Click Chemistry. Advanced Synthesis & Catalysis, 2013, 355, 2982–2991. (Link for PDF)

10.  Kapileswar Seth, Sudipta Raha Roy, Bhavin V. Pipaliya and Asit K. Chakraborti, Synergistic Dual Activation Catalysis by Palladium Nanoparticles for Epoxide Ring Opening with Phenols. Chemical Communication, 2013, 49, 5886-5888. (Link for PDF)

9.  Anirban Sarkar, Sudipta Raha Roy, Dinesh Kumar, Chetna Madaan, Santosh Rudrawar and Asit K. Chakraborti, Lack of Correlation Between Catalytic Efficiency and Basicity of Amines During the Reaction of Aryl Methyl Ketones with DMF-DMA: An Unprecedented Supramolecular Domino Catalysis. Organic Biomolecular Chemistry, 2012, 10, 281-286. (Link for PDF)

8.  Anirban Sarkar, Sudipta Raha Roy, Naisargee Parikh and Asit K. Chakraborti, Non-Solvent Application of Ionic Liquids: Organo-Catalysis by 1-Alkyl-3-Methylimidazolium Cation Based Room Temperature Ionic Liquids for Chemoselective N-tert-Butyloxycarbonylation of Amines and the Influence of the C-2 Hydrogen on Catalytic Efficiency. Journal of Organic Chemistry, 2011, 76, 7132-7140. (Highlighted on Organic Chemistry Portal) (Link for PDF)

7.  Sudipta Raha Roy, Pradeep S. Jadhavar, Kapileswar Seth, Kulin K. Sharma and Asit K. Chakraborti, Organocatalytic Application of Ionic Liquids: [bmim][MeSO4] as a Recyclable Organocatalyst in the Multicomponent Reaction for the Preparation of Dihydropyrimidinones and -thiones. Synthesis, 2011, 14, 2261-2267. (Highlighted on Organic Chemistry Portal) (Link for PDF)  

6.  Sudipta Raha Roy, Isatoic Anhydride, Synlett (Spotlight), 2011, 10, 1479-1480. (Link for PDF)

5.  Anirban Sarkar, Sudipta Raha Roy and Asit K. Chakraborti, Ionic Liquid Catalysed Reaction of Thiols with α,β-Unsaturated Carbonyl Compounds- Remarkable Influence of the C-2 Hydrogen and the Anion. Chemical Communication, 2011, 47, 4538-4540. (Link for PDF)

4.  Naisargee Parikh, Dinesh Kumar, Sudipta Raha Roy and Asit K. Chakraborti, Surfactant Mediated Oxygen Reuptake in Water for Green Aerobic Oxidation: Mass-Spectrometric Determination of Discrete Intermediates to Correlate Oxygen Uptake with Oxidation Efficiency. Chemical Communication, 2011, 47, 1797-1799. (Link for PDF)

3.  Sudipta Raha Roy and Asit K. Chakraborti, Supramolecular Assemblies in Ionic Liquid Catalysis for Aza-Michael Reaction. Organic Letters, 2010, 12, 3866-3869. (Link for PDF)

2.  Asit K. Chakraborti and Sudipta Raha Roy, On Catalysis by Ionic Liquids. Journal of American Chemical Society, 2009, 131, 6902-6903. (Highlighted in NPG Asia Materials; Published online 25th Aug  2009) (Link for PDF)

1.  Asit K. Chakraborti, Sudipta Raha Roy, Dinesh Kumar and Pradeep Chopra, Catalytic Application of Room Temperature Ionic Liquids: [bmim][MeSO4] as a Recyclable Catalyst for Synthesis of Bis(indolyl)methanes. Ion-fishing by MALDI-TOF-TOF MS and MS/MS Studies to Probe the Proposed Mechanistic Model of Catalysis. Green Chemistry, 2008, 10, 1111-1118. (Link for PDF)