Buddhadeb was born and raised in Insura-Hooghly, West Bengal. He obtained his B.Sc. (2001) in chemistry from the Burdwan University and M.Sc. (2003) in chemistry from Visva-Bharati University. In 2003, he left Visva-Bharati and enrolled in Kalyani University for his Ph.D. in the laboratories of Professor K. C. Majumdar. In 2009, he accepted a postdoctoral research associateship from the University of Illinois at Chicago, USA in the group of Professor Vladimir Gevorgyan. Spending two years at Chicago, he then moved to the Michigan State University, Michigan, USA for his next postdoctoral research program in the laboratories of Professor Milton R. Smith III. Group (2011-July 2014). In August 2014, he moved to the Centre of Bio-Medical Research (CBMR) Lucknow, India as a DST-Ramanujan Fellow to start his independent research career. In November 2016, he joined as an Assistant Professor and promoted to Associate Professor in November 2019. His research interest includes the catalyst/ligand engineering for the C–H bond activation/functionalization, especially C–H bond borylations of organic molecules and metal-nitrene/carbene chemistry by means of denitrogenative transformations to make high-valued nitrogen heterocycles.

Academic Appointments:

• 2019 (November) - Present: Associate Professor, CBMR, Lucknow, India
• 2016 (November) - 2019 (November): Assistant Professor, CBMR, Lucknow, India
• 2014 (August) - 2016 (November): Ramanujan Faculty, CBMR, Lucknow, India
• 2014 (July) – 2011: Post-doctoral Research Associate, Department of Chemistry, Michigan State University, East Lansing, Michigan, USA. Advisor – Professor Milton R. Smith III
• 2011 – 2009: Post-doctoral Research Associate, Department of Chemistry, University of Illinois at Chicago, Chicago, Illinois, USA. Advisor – Professor Vladimir Gevorgyan

Educations:

• Ph.D. / (Synthetic Organic Chemistry), 2009 (Advisor: Professor K. C. Majumdar), University of Kalyani, W. B., India
• Master of Science / Chemistry (Organic division), 2003, Visva-Bharati (Central University), W. B., India

Awards:

• 2023: "SERB-TETRA AWARD–2022" (Technology Translation Award)
• 2020: "SERB-STAR AWARD–2019" (Science and Technology Award for Research)
• 2017: "Thieme Chemistry Journal Awardee" in 2017 (International)
• 2014: Young Scientist Award (DST, Government of India)  
• 2013: Ramanujan Faculty Award (DST, Government of India)
• 2010: The 27th H. C. Brown Award (for the best poster presentation in the 27th H. C. Brown Organic Symposium) in Purdue University, USA
• 2004: JRF (CSIR-NET) (Conducted by CSIR and UGC, New Delhi)
• 2003: Graduate Aptitude Test in Engineering (GATE) (Conducted by Indian Institute of Technology, Kharagpur)
• 2003: State Level Eligibility Test (SLET) (Conducted by College Service Commission, W. B. State Government of India)
• 2003: First Class First in Master of Science (Visva-Bharati University, India)

Professional Memberships:

• American Chemical Society, Regular Member, USA.
• Indian Association for the Cultivation of Science (IACS), Life member, Kolkata, W.B. India
• Chemical Research Society of India (CRSI), Life member, India

Invited Talks/Conferences (National & International):

• Keynote Talk: International Symposium on Carbene & Nitrene Chemistry (ISCNC-2023), on 25-28 July, 2023 University of Amsterdam, Netherland. (Keynote Lecture July 25, 2023).
• Invited Talk: (Chemistry) Meet 2023: Kindling in Kaziranga, at the Borgos Resort, Kaziranga, Assam (March 16-19, 2023).
• Invited Talk: National Symposium on Brainstorming Meeting on Chemistry at the Interface (BSCI-2022), Department of Chemistry, Institute of Science, Banaras Hindu University (December 26-27, 2022).
• Invited Talk: Contemporary Facets in Organic Synthesis (CFOS–2022), Department of Chemistry, IIT–Roorkee (December 01-04, 2022).
• Invited Talk: DFG–SERB Indo-German Week of Young Researcher Conclave, The Lalit, New Delhi & IIT-Delhi (November 07-10, 2022).
• Invited Talk: First Industry–Academia NOST Conclave, Department of Chemistry, IIT Bombay (September 13-14, 2022).
• FORCE IICS 2022 Conference, Jaypee Palace, Agra, (July 28-31, 2022).
• Invited Talk: 58th Annual Convention of Chemists (ACC) of the Indian Chemical Society (ICS), RTCS-OBC 2021’ Symposium (December 22, 2021).
• Invited Talk: RSC–IISER Mohali Desktop Seminar with OBC (November 26, 2021).
• Invited Talk: University of Illinois at Chicago (UIC), Department of Chemistry, Chicago, Illinois, USA (July 28, 2021).
• Invited Talk: International Conference on Porphyrins and Phthalocyanines (ICPP-11) Buffalo, New York, USA (June 28 to July 03, 2021).
• Invited Talk: New York University, Department of Chemistry, New York, USA (February 02, 2021).
• Invited Talk: ICOC-2020 Conference, Holiday Inn Resort, Goa (March 07-10, 2020).
• Invited Talk: National Organic Synthesis Conference (N-COS-2020), Berhampur University, Odisha (March 01 to March 03, 2020).
• Invited Talk: National Symposium on Recent Trends in Chemistry (RTC-2019), NEHU-Shillong, Meghalaya (October 31 to November 01, 2019).
• Invited Talk: Chemical Science in India : Leaders in the Field Symposium (YIMRSC-2019), IISER-Kolkata (October 18-20, 2019).
• Invited Talk: Recent Advances in Bioorganic and Medicinal Chemistry (RABMC-2019), NIPER, S.A.S. Nagar (Mohali) (August 30, 2019).
• Invited Talk: Department of Chemistry, IIT-Kanpur (August 26, 2019).
• Invited Talk: National Seminar on Catalysis for Fine Chemicals (NSCFC-2019), CSIR–CSMCRI, Bhavnagar (July 25, 2019).
• Invited Talk: ICOC-2018 Conference, Holiday Inn Resort, Goa (December 13-16, 2018).
• Invited Talk: Indigo Conference, Hyderabad, Dr. Reddy’s Laboratories (November 25-27, 2018).
• Invited Talk: Syngenta Biosciences Pvt Ltd, Goa, (September 24, 2018).
• Invited Talk: BBRC Symposium-III: Frontiers in Organic Chemistry at BBRC, Bangalore, (July 30-31, 2018).
• Invited Talk: NOST-OCC-XVIII Conference at IISER-Bhopal, (August 24-26, 2017).
• Invited Talk: FOMC-16 Conference at Kovalam, Organized by IIT-Indore (December 04, 2016).
• Invited Talk: Indian Institute of Science Education and Research (IISER-Pune)
• Invited Talk: Indian Institute of Science Education and Research (IISER-Trivandrum)
• Invited Talk: Indian Institute of Technology (IIT-Delhi)
• Invited Talk: Indian Institute of Technology (IIT-Indore)
• Invited Talk: Vidyasagar University: Department of Chemistry, Midnapore
• Invited Talk: CSIR-NIIST-Thiruvananthapuram
• Invited Talk: Indian Institute of Technology (IIT-KGP)
• Invited Talk: Michigan State University: Department of Chemistry, USA.
• Invited Talk: Indian Institute of Technology (IIT-Guwahati)

• Research Interests:

  • Transition metal-mediated C–H bond activation/functionalization via noncovalent interactions
  • Development of new synthetic methodologies and drug discovery
  • Design and synthesis of new ligands and catalytic systems for organic reactions
  • Organometallics, especially organo-boron and organo-silicon chemistry
  • Metal-nitrene/carbene chemistry

Publications From CBMR:

[67] Iron-Catalyzed Intermolecular C–N Cross-Coupling Reactions via Radical Activation Mechanism. Das, S.; Ehlers, A. W.; Patra, S.; de Bruin, B.; Chattopadhyay, B. J. Am. Chem. Soc. 2023, 145, 14599–14607. [link].

[66] Transition Metal–Catalyzed Remote C─H Borylation: An Emerging Synthetic Tool. Hassan, M. M. M.; Guria, S.; Dey, S.; Das, J.; Chattopadhyay, B. Science Advances 2023, 9, doi/10.1126/sciadv.adg3311. [link]. (Invited Contribution).

[65] Transition Metal-Catalyzed Denitrogenative Annulation to Access High-Valued N-Heterocycles. Das, S. K.; Roy, S.; Chattopadhyay, B. Angew. Chem. Int. Ed. 2023, 62, e202210912. [link].

[64] Iron-Catalyzed Intermolecular Amination of Benzylic C(sp3)–H Bonds. Khatua, H.; Das, S.; Patra, S.; Das, S. K.; Roy, S.; Chattopadhyay, B. J. Am. Chem. Soc. 2022, 144, 21858–21866. [link]. This work has been highlighted as literature coverage/news in Synform. [link].

[63] Ligand- and Substrate-Controlled para C–H Borylation of Anilines at Room Temperature. Haldar, C.; Bisht, R.; Chaturvedi, J.; Guria, S.; Hassan, M. M. M.; Ram, B.; Chattopadhyay, B. Org. Lett. 2022, 24, 8147–8152. [link].

[62] An Iron(II)-Based Metalloradical System for Intramolecular Amination of C(sp2)–H and C(sp3)–H Bonds: Synthetic Applications and Mechanistic Studies. Das, S. K.; Das, S.; Ghosh, S.; Roy, S.; Pareek, M.; Roy, B.; Sunoj, R. B.; Chattopadhyay, B. Chemical Science 2022, 13, 11817-11828. [link].

[61] Metal-Catalysed C–H Bond Activation and Borylation. Bisht, R.; Haldar, C.; Hassan, M. M. M.; Hoque, E. M.; Chaturvedi, J.; Chattopadhyay, B. Chem. Soc. Rev. 2022, 51, 5042-5100. [link].

[60] Iridium-Catalyzed Ligand-Controlled Remote para-Selective C–H Activation and Borylation of Twisted Aromatic Amides. Hoque, E. M.; Bisht, R.; Unnikrishnan, A.; Dey, S.; Hassan, M. M. M.; Guria, S.; Rai, R. N.; Sunoj, R. B.; Chattopadhyay, B. Angew. Chem. Int. Ed. 2022, 61, e202203539. [link]. This work is selected as Hot Topic in C–H Activation. [link].

[59] Ir-Catalyzed Ligand-Free Directed C–H Borylation of Arenes and Pharmaceuticals: Detailed Mechanistic Understanding. Hassan, M. M. M.; Mondal, B.; Singh, S.; Haldar, C.; Chaturvedi, J.; Bisht, R.; Sunoj, R. B.; Chattopadhyay, B. J. Org. Chem. 2022, 87, 4360–4375. [link].

[58] Iridium Pyridine-Thienyl Catalyst (Ir-PYT) for C–H Borylation. Hoque, E. M.; Hassan, M. M. M.; Chattopadhyay, B. Encyclopedia of Reagents for Organic Synthesis (EROS) 2022. [link] (Invited Contribution).

[57]  Iridium-catalyzed para-selective C-H borylation reactions. Chaturvedi, J.; Hassan, M. M. M.; Haldar, C.; Chattopadhyay, B. Handbook of C-H bond Functionalizations. 2022 (Wiley), [link] (Invited Contribution, Book Chapter, Wiley VCH).

[56] Ir-catalyzed proximal and distal C–H borylation of arenes. Haldar, C.; Hoque, E. M.; Chaturvedi, J.; Hassan, M. M. M.; Chattopadhyay, B. Chem. Commun. 2021, 57, 13059-13074. [link] (Invited Contribution, Feature Article).

[55] Road Map for the Construction of High-Valued N-Heterocycles via Denitrogenative Annulation. Roy, S.; Das, S. K.; Khatua, H.; Das, S.; Chattopadhyay, B. Acc. Chem. Res. 2021, 54, 4395–4409. [link]

[54] Meta Selective C–H Borylation of Sterically Biased and Unbiased Substrates Directed by Electrostatic Interaction. Chaturvedi, J.; Haldar, C.; Bisht, R.; Pandey, G.; Chattopadhyay, B. J. Am. Chem. Soc. 2021, 143, 7604-7611. [link]

[53] Remarkably Efficient Iridium Catalysts for Directed C(sp2)−H and C(sp3)−H Borylation of Diverse Classes of Substrates. Hoque, E.; Hassan, M. M. M.; Chattopadhyay, B. J. Am. Chem. Soc. 2021, 143, 5022–5037. [link]
This work has been highlighted in Science. "Better boron placement" by Editor Jake Yeston. Science, 2021, 372, 804-805. [link]

[52] Iron‐Catalyzed Radical Activation Mechanism for Denitrogenative Rearrangement Over C(sp3)–H Amination. Roy, S.; Das, S. K.; Khatua, H.; Das, S.; Singh, K. N.; Chattopadhyay, B. Angew. Chem. Int. Ed. 2021, 60, 8772-8780. [link] This work  is selected as Hot Paper.

[51] Dual Reactivity of 1,2,3,4‐Tetrazole: Manganese‐Catalyzed Click Reaction and Denitrogenative Annulation. Hillol Khatua, Sandip Kumar Das, Satyajit Roy, Chattopadhyay, B. Angew. Chem. Int. Ed. 2021, 60, 304-312. [link] This work is selected as Hot Topic in Click Chemistry. [link]

[50] Iron-Catalyzed Amination of Strong Aliphatic C(sp3)–H Bonds.  Sandip  Kumar Das,   Satyajit Roy,   Hillol Khatua,  Chattopadhyay, B. J. Am. Chem. Soc. 2020, 142, 16211-16217. [link]

[49] Double-Fold Ortho and Remote C–H Bond Activation/Borylation of BINOL: A Unified Strategy for Arylation of BINOL. Bisht, R.; Chaturvedi, J.; Pandey, G.; Chattopadhyay, B. Org. Lett. 2019, 21, 6476-6480. [link]

[48] Iron(II)‐Based Metalloradical Activation: Switch from Traditional Click Chemistry to Denitrogenative Annulation. Roy, S.; Khatua, H.; Das, S. K.; Chattopadhyay, B. Angew. Chem. Int. Ed. 2019, 58, 11439-11443. [link]

[47] Amide Effect in C–H Activation: Noncovalent Interactions with L‐Shaped Ligand for meta Borylation of Aromatic Amides. Bisht, R.; Hoque, E.; Chattopadhyay, B. Angew. Chem. Int. Ed. 2018, 57, 15762-15766. [link]

[46] Ir-Catalyzed Intramolecular Transannulation/C(sp2)–H Amination of 1,2,3,4-Tetrazoles by Electrocyclization. Das, S. K.; Roy, S.; Khatua, H.; Chattopadhyay, B. J. Am. Chem. Soc. 2018, 140, 8429-8433. [link]

[45] Achieving High Ortho Selectivity in Aniline C-H Borylations by Modifying Boron Substituents. Smith, M. R.; Bisht, R.; Haldar, C.; Pandey, G.; Dannatt, J. E.; Ghaffari, B.; Maleczka, R. E.; Chattopadhyay, B. ACS Catalysis 2018, 8, 6216-6223. [link]

[44] Cobalt(II)-Based Metalloradical Activation of 2-(Diazomethyl)pyridines for Radical Transannulation and Cyclopropanation. Roy, S.; Das, S. K.; Chattopadhyay, B. Angew. Chem. Int. Ed. 2018, 57, 2238-2243. [link]

[43] Noncovalent Interactions in Ir-Catalyzed C–H Activation: L-Shaped Ligand for Para-Selective Borylation of Aromatic Esters. Hoque, E.; Bisht, R.; Haldar, C.; Chattopadhyay, B. J. Am. Chem. Soc. 2017, 139, 7745-7748. [link]  This work is highlighted in Organic Chemistry Portal.

[42] Ir-Catalyzed Ortho Borylation of Phenols Directed by Substrate-Ligand Electrostatic Interactions: A Combined Experimental/in Silico Strategy for Optimizing Weak Interactions. Chattopadhyay, B.; Dannatt, J. E.; Sanctis, I. L. A.-de.; Gore, K. A.; Maleczka, R. E.; Singleton, D. A.; Smith, M. R. J. Am. Chem. Soc. 2017, 139, 7864-7871. [link]

[41] Formal Ir-Catalyzed Ligand-Enabled Ortho- and Meta-Borylation of Aromatic Aldehydes via in Situ Generated  Imines. Bisht, R.; Chattopadhyay, B. J. Am. Chem. Soc. 2016, 138, 84-87. [link]

Selected Post-doctoral Publications:

[40] Miller, S.; Chotana, G.; Fritz, J.; Chattopadhyay, B.; Maleczka, R. E.; Smith, M. R. “C–H Borylation Catalysts that Distinguish Between Similarly Sized Substituents Like Fluorine and Hydrogen” Org. Lett. 2019, 21, 6388-6392 [link]

[39] Smith III, M. R.; Chattopadhyay, B. “Comprehensive Organic Synthesis II, Non-directed Aryl C–H Oxidations” (Elsevier), Eds. Knochel, P.; 2014, 7, 347-372 (invited book chapter). [link]

[38] Roosen, P. C.; Kallepalli, V. A.; Chattopadhyay, B.; Singleton, D. A.; Maleczka, Jr., R. E.; Smith, M. R. III “Outer-Sphere Direction in Iridium C-H Borylation” J. Am. Chem. Soc. 2012, 134, 11350- 11353. [link]

[37] Chattopadhyay, B.; Gevorgyan, V. “Transition Metal Catalyzed Denitrogenative Transannulation: Converting Triazoles into Other Heterocyclic Systems” Angew. Chem., Int. Ed. 2012, 51, 862-872. [link]

[36] Huang, C; Ghavtadze, N; Chattopadhyay, B; Gevorgyan, V. “Synthesis of Catechols from Phenols via Pd-Catalyzed Silanol-Directed C–H Oxygenation” J. Am. Chem. Soc. 2011, 133, 17630–17633. [link]

[35] Hunge, C; Chattopadhyay, B.; Gevorgyan, V. “Silanol: A Traceless Directing Group for Pd-catalyzed o-Alkeneylation of Phenols” J. Am.  Chem.  Soc. 2011, 133, 12406-12409 [link] (Highlighted by Nature Chemistry 2014, 6, 94-96). [link]

[34] Chattopadhyay, B.; Gevorgyan, V. “Rh-Catalyzed Transannulation of N-Tosyl-1,2,3-Triazoles with Terminal Alkynes” Org. Lett. 2011, 13, 3746-3749. [link]

[33] Chattopadhyay, B.; Rivera Vera, C. I.; Chuprakov, S.; Gevorgyan, V. “Fused Tetrazoles as Azide Surrogates in Click Reaction: Efficient Synthesis of N-Heterocycle-substituted 1,2,3-Triazoles” Org. Lett. 2010, 12, 2166-2169. [link]

Selected Ph.D. Publications:

[32] Majumdar, K. C.; Samanta, S.; Chattopadhyay, B.; Pal, N. “Recent Advancement of the thio-Claisen Rearrangement” Curr. Org. Synth. (Review) 2012, 9, 851-872.

[31] Majumdar, K. C.; Ganai, S.; Chattopadhyay, B.; Ray, K. “Palladium-catalyzed one-pot Synthesis of pyrrole-annulated coumarin, quinoline and 7-aza indole derivatives” Synlett 2011, 2369–2373.

[30] Majumdar, K. C.; Nath, S.; Chattopadhyay, B.; Sinha, B. “Palladium-Catalyzed Tethered Intramolecular Arylation: An Unusual Synthesis of Linearly Fused Pyridocoumarin Derivatives” Synthesis 2010, 3918–3926.

[29] Majumdar, K. C.; Samanta, S.; Nandi, R. K.; Chattopadhyay, B. “Palladium-Catalyzed Regioselective Oxidative Amination of Alkenes: An efficient route to the synthesis of pyrrolo-coumarin and -quinolone derivatives” Tetrahedron Lett. 2010, 51, 3807-3810.

[28] Majumdar, K. C.; Mondal S.; Ghosh, D.; Chattopadhyay, B. “Concise synthesis of pyrimido-azocine derivatives via aza-Claisen rearrangement and intermolecular Heck reaction” Synthesis 2010, 1315-1320.

[27] Majumdar, K. C.; Chattopadhyay, B.; Maji, P.; Chattopadhyay, S. K.; Samanta, S. “Recent development of palladium-mediated synthesis of nitrogen heterocycles: Part II” Heterocycles (Review) 2010, 81, 795-866.

[26] Majumdar, K. C.; Chattopadhyay, B.; Maji, P.; Chattopadhyay, S. K.; Samanta, S. “Recent development of palladium-mediated synthesis of oxygen heterocycles: Part I” Heterocycles (Review) 2010, 81, 517-584.

[25] Majumdar, K. C.; Nandi, R. K.; Samanta, S.; Chattopadhyay, B. “Novel synthesis of heterocycle-annulated azocine derivatives of biological relevance by aromatic aza-Claisen rearrangement and intermolecular Heck reaction” Synthesis 2010, 985-990.

[24] Majumdar, K. C.; Samanta, S.; Chattopadhyay, B.; Nandi, R. K. “Synthesis of azepine- and azocine-annulated heterocycles by the aromatic aza-Claisen rearrangement and ring closing metathesis” Synthesis 2010, 863-869.

[23] Majumdar, K. C.; Chattopadhyay, B.; Ray, K. “Synthesis of five- and six-membered heterocyclic compounds by the application of the metathesis reactions” Curr. Org. Synth (Review) 2010, 7, 153-176.

[22] Majumdar, K. C.; Chattopadhyay, B.; Shyam, P. K.; Pal, N. “A new disc-shaped mesogenic compound with olefinic linkage derived from triphenylamine: synthesis, fluorescence and mesogenic properties” Tetrahedron Lett. 2009, 50, 6901-6905.

[21] Majumdar, K. C.; Ansary, I.; Sinha, B.; Chattopadhyay, B. “Pd(0)-catalyzed intramolecular Heck reaction: a resourceful route for the synthesis of naphthoxepine and naphthoxocine derivatives” Synthesis 2009, 3593-3602.

[20] Majumdar, K. C.; De, R. N.; Chattopadhyay, B.; Roy, B. “Palladium-catalyzed Heck reaction for the synthesis of heterocycles-annilated medium size oxa cycles and lactone derivatives” Synlett 2009, 2083-2088.

[19] Majumdar, K. C.; Samanta, S.; Chattopadhyay, B. “Pd(0)-catalyzed synthesis of azocinone: a versatile protocol for the synthesis of dibenzoazocinones by Heck reaction” Tetrahedron Lett. 2009, 50, 4866-4869.

[18] Majumdar, K. C.; Chattopadhyay, B. “Novel synthesis of medium-sized heterocycles by palladium-catalyzed intramolecular Heck reaction via 9-endo trig mode of cyclization” Synthesis 2009, 2385-2392.

[17] Majumdar, K. C.; Bhattacharyya, T.; Chattopadhyay, B.; Sinha, B. “Recent advances in the aza-Claisen rearrangement” Synthesis (Review) 2009, 2117-2142.

[16] Majumdar, K. C.; Chattopadhyay, B. “New Synthetic Strategies for Medium-Sized and Macrocyclic Compounds by Palladium-Catalyzed Cyclization” Curr. Org. Chem. (Review) 2009, 13, 731-757.

[15] Majumdar, K. C.; Chattopadhyay, B.; Samanta, S. “Synthesis of highly substituted dibenzo-azocine derivatives by aza-Claisen rearrangement and intramolecular Heck reaction via 8-exo-trig mode of cyclization” Tetrahedron Lett. (Special Issue, Invited), 2009, 50, 3178-3181.

[14] Majumdar, K. C.; Chattopadhyay, B.; Ansary, I. “Concise strategy for the synthesis of eleven- and ansa-bridged thirteen-membered lactone macrolides by ring closing metathesis reaction” Can. J. Chem. 2009, 87, 472-477.

[13] Majumdar, K. C.; Chattopadhyay, B.; Chakravorty, S. “An expedient synthesis of bis-fused benzofuran and a two-directional ring closing metathesis for the synthesis of bis-benzoxepine and bis-benzooxocine” Synthesis 2009, 674-680. (Highlighted in Synfact 2009, 5, 499).

[12] Majumdar, K. C.; Chattopadhyay, B.; Samanta, S. “A short route to the synthesis of pyrrolocoumarin and pyrroloquinolone derivatives by the Sonogashira cross-coupling and gold-catalyzed cycloisomerization of acetylenic amines” Synthesis 2009, 311-317.

[11] Majumdar, K. C.; Chattopadhyay, B.; Chakravorty, S.; Pal, N.; Sinha, R. K. “A new type of symmetrical banana-shaped material based on N-methyldiphenylamine as a core moiety exhibiting an Ad→A2 transition” Tetrahedron Lett. 2008, 49, 7149-7152.

[10] Majumdar, K. C.; Samanta, S.; Chattopadhyay, B. “A convenient synthesis of pyrrolopyridines and 2-substituted indoles by gold-catalyzed cycloisomerization” Tetrahedron Lett. 2008, 49, 7213-7216.

[09] Majumdar, K. C.; Chattopadhyay, B.; Sinha, B. “Novel synthesis of oxathiocine derivatives by the Wittig olefination and intramolecular Heck reaction via an 8-endo-trig cyclization” Synthesis 2008, 3857-3863.

[08] Majumdar, K. C.; Sinha, B.; Chattopadhyay, B.; Ray, K. “Regioselective synthesis of pyrano[3,2-c]pyrimidine derivatives via a palladium-catalyzed unusual [1,3]-aryloxy shift and cycloisomerization: First report of a [1,3] shift of an aryloxy group” Tetrahedron Lett. 2008, 49, 4405-4408.

[07] Majumdar, K. C.; Chattopadhyay, B. “Novel synthesis of nine-membered oxa-heterocycles by Pd(0)-catalyzed intramolecular Heck reaction via unusual 9-endo-trig mode cyclization” Synlett 2008, 979-982.

[06] Majumdar, K. C.; Alam, S.; Chattopadhyay, B. “Catalysis of the Claisen rearrangement” Tetrahedron (Review) 2008, 64, 597-643.

[05] Majumdar, K. C.; Chattopadhyay, B. “Amino-Claisen and oxy-Claisen rearrangement: Regioselective synthesis of pyrrolecoumarin derivatives” Synthesis 2008, 921-924.

[04] Majumdar, K. C.; Chattopadhyay, B.; Nath, S. “New Heck coupling strategies for the arylation of secondary and tertiary amides via palladium catalyzed intramolecular cyclization” Tetrahedron Lett. 2008, 49, 1609-1612.

[03] Maumdar, K. C.; Chattopadhyay, B.; Sinha, B. “Novel synthesis of oxocine derivatives by Wittig olefination and intramolecular Heck reaction via 8-endo-trig mode cyclization” Tetrahedron Lett. 2008, 48, 1319-1322.

[02] Majumdar, K. C.; Chattopadhyay, B.; Ray, K. “Novel synthesis of medium-sized oxa-heterocycles by palladium-catalyzed intramolecular Heck reaction” Tetrahedron Lett. 2007, 48, 7633-7636.

[01] Majumdar, K. C.; Chattopadhyay, B.; Taher, A. “New efficient synthesis of pyrido[2,3-c] coumarin derivatives by the Pd-catalyzed Heck cyclization” Synthesis 2007, 3647-3652.

Patents from CBMR:

[6] Ligand Scaffold for Proximal & Remote Borylation of Arenes. Das, J.; Hoque, E.; Hassan, M. M. M.; Guria, S.; Chattopadhyay, B. Status: Submitted on February 08, 2023. Patent Application No: 202311008149.

[5] A New Ligand Scaffold (PY-PYRI) for the Meta Borylation of Phenol Derivatives. Guria, S.; Hassan, M. M. M.; Dey, S.; Chattopadhyay, B. Status: Submitted on June 25, 2022. Patent Application No: 202211036590.

[4] A New Ligand Framework for para Borylation of Arenes. Haldar, C.; Bisht, R.; Chaturvedi, J.; Guria, S.; Chattopadhyay, B. Status: Submitted on January 11, 2022. Patent Application No. 202211001312.

[3] Method of meta Selective Borylation of Aromatic Molecules. Chaturvedi, J.; Haldar, C.; Bisht, R.; Chattopadhyay, B. Status: Submitted on August 20, 2020. (Published), Patent Application No. 202011035905 .

[2] Method of Manganese-Catalyzed Activation of 1,2,3,4-Tetrazoles for Nitrogen Heterocycle Synthesis via Click and Denitrogenative Annulation. Khatua, H.; Das, S. K.; Roy, S.; Chattopadhyay, B. Status: Submitted on May 23, 2020. (Published). Patent Application No. 202011021740.

[1] Catalyst/Ligand Engineering for C–H Borylation of Diverse Classless of Aromatic and Heteroaromatic Molecules. Hoque,   E.; Hassan, M.; Chattopadhyay, B. Status: Published (Filed on February 05, 2020). Patent Application No.: 202011005091, Granted on 23/06/2022, Patent No.: 399886.