Professor Pathak was born at Kasimpur, Etah, Uttar Pradesh, India in 1961. He received his B. Sc. and M. Sc in Inorganic Chemistry from R. B. S. College, Agra University, Agra in 1979 and 1981, respectively. He obtained his Ph.D. in Chemistry from the University of Delhi in 1986 in organometallic Chemistry. Later on, he moved to the Research School of Chemistry, Australian National University (ANU), Canberra, Australia to pursue a second Ph.D. He earned the second Ph. D. in Chemistry in 1990 from ANU. In 1991, he moved to the University of Sheffield, England, on a Postdoctoral assignment and continued there till 1996. He returned to India in 1996. After a short span at the Delhi University as a Senior Postdoctoral Research Associate (CSIR), he joined the Indian School of Mines, presently Indian Institute of Technology (Indian School of Mines), Dhanbad as Assistant Professor. He bagged the Indian National Science Academy (ISNSA), New Delhi, Visiting award in 2006-07 to visit the India
EDUCATION
DR DEVENDRA DEO PATHAK
PROFESSOR (HAG)
D.U., Delhi), , PDF ( Sheffield,UK), A.I.C.C.E.
Department of Chemistry & Chemical Biology
Indian Institute of Technology (ISM)
DHANBAD-826 004 (INDIA)
Mobile:91 9431126250
RESEARCH, TEACHING, or OTHER INTERESTS
Inorganic Chemistry, General Chemistry, Organic Chemistry
Copper(II)-Catalyzed One-Pot Synthesis of Thiazolidin-2-imines and Formamides Using Vilsmeier Reagent Jyoti Prabha Kujur, Pritish Rajkumar Moon, Rakesh Ganguly, Devendra Deo Pathak European Journal of Organic Chemistry, 2026 Facile synthetic routes for the conversion of a series of N ‐aryl propargylamines to thiazolidin‐2‐imines and formamides are described. A cross‐linked chitosan‐supported copper(II) biocomposite (CS‐PDB@Cu(NO 3 ) 2 ) was employed as a heterogeneous catalyst in a one‐pot multicomponent reaction involving primary amines, formaldehyde, terminal alkynes, and isothiocyanates in toluene, yielding thiazolidin‐2‐imines in moderate to good yields (25%–70%) via N ‐aryl propargylamine intermediates. Additionally, N ‐formylation of N ‐aryl propargylamines using the Vilsmeier reagent afforded formamides in high yields (70%–88%). A total of 20 thiazolidin‐2‐imine derivatives and 22 formamide derivatives were successfully isolated. All isolated products were characterized by 1 H and 13 C { 1 H} NMR and HRMS spectroscopy. The CS‐PDB@Cu(NO 3 ) 2 biocomposite catalyst was recyclable for up to three catalytic cycles through simple filtration. Reaction intermediates for both transformations were identified by LC‐MS analysis. Furthermore, the structures of two thiazolidin‐2‐imine compounds, 4h and 4t , were unambiguously confirmed by single‐crystal X‐ray crystallography.
A Highly Amorphous Multimetallic (Co, Fe, Ni, and W) Efficient Electrocatalyst for Overall Water Splitting in Basic Media and Hydrogen Evolution in Acidic Media Nidhi Pradhan, Devendra Deo Pathak, Mahendra Yadav Langmuir, 2025 The global impact of industrial growth has resulted in a rapid elevation in consumption of gas and electricity, while corporations continue to produce excess amounts of gas and oil, but these are still insufficient to meet the energy demands worldwide. Research on alternative green energy fuels has become more popular as a result of this circumstance. Due to its renewable and environmentally favorable qualities, electrochemical water splitting has been considered the perfect alternative to fossil fuels. Thus, logical development of an extremely stable, cheap, and effective bifunctional catalyst is essential for complete water splitting application on a large scale. In the present work, a simple, eco-friendly, and scalable coprecipitation method was used to synthesize a highly disordered amorphous electrocatalyst (A-FNC), which, upon calcination, crystallizes into three distinct phases, i.e., Fe2WO6, NiWO4, and WO3. Various characterization techniques like PXRD, FESEM, HR-TEM, XPS, etc. were used to get a better insight into the structure and morphology of the synthesized catalyst. Previous reports show that amorphous phases are highly rich in defects, which are very beneficial in improving catalytic activity. The synergistic effect between Fe, Ni, and Co is believed to be one of the prime reasons which led to its exemplary electrocatalytic activity for the HER at extreme pHs and the OER in basic media. A detailed measurement and elucidation of several electrochemical techniques have been used to get a better insight into the catalytic properties for all the synthesized samples like overpotential, Tafel slope, stability, etc. Finally, the obtained η10 for the alkaline electrolyzer in a two-electrode cell was 1.59 V, which surpasses that of many reported similar kinds of catalysts to date. These findings indicate a viable pathway for water electrocatalysis by using cost-effective amorphous electrocatalysts that are abundant on Earth and can be used for future applications.
Synthesis and Single-Crystal X-ray Structures of Sterically Hindered Three Half-Sandwich (η6-p-Cymene)ruthenium(II) Schiff Base Complexes: Catalytic Applications in Selective Monoalkylation of Amines and Synthesis of Amides Bhumika Agrahari, Samaresh Layek, Rakesh Ganguly, Devendra Deo Pathak Organometallics, 2025 Transition metal complex-mediated organic synthesis is a fascinating area of mutual interest to both organic and inorganic chemists. In this work, three new bulky half-sandwich ruthenium(II) Schiff base complexes of the general formula [(p-cymene)L1RuCl] Ru1, [(p-cymene)L2RuCl] Ru2, and [(p-cymene)L3RuCl]OTf Ru3 [HL1 = 2-(2,6-dibenzhydryl-4-methylphenyliminomethyl)phenol, HL2 = 2-(2,6-dibenzhydryl-4-methylphenyliminomethyl-5-pentan-3-yl)phenol, L3= 2,6-dibenzhydryl-N-(isoquinolin-1-ylmethylene)-4-methylaniline] were synthesized by the reaction of precursor complex [(p-cymene)RuCl2]2 with the corresponding Schiff base ligands and isolated as colored crystalline solids in high yields (85–87%). All Schiff base ligands and half-sandwich ruthenium complexes were characterized by ESI-MS, FT-IR and 1H and 13C{1H} NMR. The ligands (HL2 and L3) and complexes (Ru1–Ru3) were structurally characterized by single-crystal X-ray diffraction studies. The single-crystal X-ray structures of the complexes (Ru1–Ru3) confirmed a pseudo-octahedral half-sandwich piano-stool geometry around ruthenium. The complexes were found to be efficient catalysts for selective monoalkylation of primary amines via the hydrogen borrowing strategy and synthesis of a series of amides from various aldehyde and hydroxylamine hydrochloride. Among all three complexes, the cationic complex (Ru3) exhibited the best catalytic activity than the neutral analogues Ru1 and Ru2 in both the reactions. The synthesized organic products were characterized by 1H and 13C{1H} NMR analysis.
Interweaved needle-shaped α-Ni(OH)2 nanoparticles adorned on graphene oxide: A new class of heterogeneous catalysts for α-alkylation of ketones and synthesis of azines Shelly Kujur, Shruti Verma, Akash Kumar, Devendra Deo Pathak Applied Organometallic Chemistry, 2024 A simple approach for synthesizing needle‐shaped α‐Ni(OH)2 nanoparticles adorned on graphene oxide, α‐Ni(OH)2‐GO, is described. The nanocomposite was isolated as an air‐stable black powder and characterized by various instrumental techniques. The interweaved needle‐shaped morphology and the average particle diameter ~7 nm of the adorned α‐Ni(OH)2 nanoparticles were ascertained by Field Emission Scanning Electron Microscopy (FESEM) and Transmission Electron Microscopy (TEM) analysis, respectively. The catalytic potential of the nanocomposite was scrutinized in the synthesis of monosubstituted ketones via a hydrogen autotransfer strategy and synthesis of azines via dehydrogenative pathway. The products of both reactions were isolated in excellent yields and characterized by nuclear magnetic resonance (NMR) spectroscopy. α‐Ni(OH)2‐GO could be segregated and recycled for up to five cycles. The operational simplicity, broad substrate scope, non‐toxic side products, recyclability, and superior catalytic potential of the catalyst are some of the remarkable features of this protocol.
Synthesis of tetrahydrobenzo[b]pyran derivatives using sodium trifluoromethane sulphonate as an efficient catalyst International Journal of Chemical Sciences, 2011
Biopolymeric chitosan@ Cu (II) complexes as efficient heterogeneous catalyst for the synthesis of 1H-[1, 2, 3] triazolo [4, 5-c] quinolines via multicomponent reactions JP Kujur, PR Moon, R Ganguly, DD Pathak Journal of Molecular Structure, 143955 , 2025 2025
Synthesis and Single-Crystal X-ray Structures of Sterically Hindered Three Half-Sandwich (η 6 - p -Cymene)ruthenium(II) Schiff Base Complexes: Catalytic … B Agrahari, S Layek, R Ganguly, DD Pathak Organometallics 44 (17), 1951-1964 , 2025 2025 Citations: 2
Iron doped cobalt tungstate as novel electrocatalyst for oxidation of water in alkaline medium N Pradhan, A Maurya, K Agarwal, DD Pathak, M Yadav International Journal of Hydrogen Energy 157, 150491 , 2025 2025 Citations: 9
Mesoporous Co-doped-MgO as a new heterogeneous catalyst for the base-free synthesis of Quinoxalines PR Moon, JP Kujur, A Kumar, DD Pathak Journal of Molecular Structure 1319, 139602 , 2025 2025 Citations: 2
Synthesis of a new copper (ii)-immobilized cross-linked chitosan biocomposite: its application as a heterogeneous catalyst in the synthesis of N-aryl propargylamines and their … JP Kujur, DD Pathak New Journal of Chemistry 49 (31), 13304-13317 , 2025 2025 Citations: 1
Interweaved needle‐shaped α ‐Ni(OH) 2 nanoparticles adorned on graphene oxide: A new class of heterogeneous catalysts for α ‐alkylation of ketones and … S Kujur, S Verma, A Kumar, DD Pathak Applied Organometallic Chemistry 38 (2), e7331 , 2024 2024 Citations: 1
Surface modification of chitosan with Ni (II) Schiff base complex: A new heterogeneous catalyst for the synthesis of xanthones JP Kujur, PR Moon, DD Pathak International Journal of Biological Macromolecules 252, 126497 , 2023 2023 Citations: 15
Visible-Light-Mediated Regioselective C3–H Selenylation of Pyrazolo[1,5- a ]pyrimidines Using Erythrosine B as Photocatalyst T Choudhuri, S Paul, S Das, DD Pathak, AK Bagdi The Journal of Organic Chemistry 88 (13), 8992-9003 , 2023 2023 Citations: 31
Development of a Graphene Oxide-Supported N -Heterocyclic Carbene Copper(I) Complex as a Heterogeneous Catalyst for the Selective N -Monoalkylation of … S Kujur, S Verma, DD Pathak Catalysts 12 (11), 1458 , 2022 2022 Citations: 10
Copper‐triazine‐dendrimer‐functionalized‐graphene oxide: Synthesis, characterization, and application in green synthesis of propargylamines A Kumar, S Kujur, JP Kujur, R Sharma, DD Pathak Applied Organometallic Chemistry 36 (7), e6713 , 2022 2022 Citations: 6
Additive Enhances Iron Ore Reducibility and Pig Iron Productivity SK Mondal, DD Pathak, Jagdish, RS Singh JOURNAL OF SCIENTIFIC & INDUSTRIAL RESEARCH 81 (5), 540-548 , 2022 2022
Cucurbit[6]uril-Supported Fe 3 O 4 Magnetic Nanoparticles Catalyzed Green and Sustainable Synthesis of 2-Substituted Benzimidazoles via Acceptorless … S Verma, S Kujur, R Sharma, DD Pathak ACS omega 7 (11), 9754-9764 , 2022 2022 Citations: 42
Recovery of Precious Metal Silver from Scrap Computer Keyboards R Panda, OS Dinkar, PK Choubey, R Parween, MK Jha, DD Pathak REWAS 2022: Developing Tomorrow’s Technical Cycles (Volume I), 71-81 , 2022 2022
Cucurbit [6] uril supported β-Ni (OH) 2 nanoparticles as a heterogeneous catalyst for the synthesis of quinazolines via acceptorless dehydrogenative coupling of alcohols with … S Verma, S Kujur, R Sharma, DD Pathak New Journal of Chemistry 46 (44), 21356-21365 , 2022 2022 Citations: 10
Vapour phase synthesis of 2-methylpyridine and 4-methylpyridine over potassium salts of 12-tungstophosphoric acid RN Senapati, P Dutta, H Agarwalla, G Sahu Journal of Scientific & Industrial Research 81 , 2022 2022 Citations: 1
A green polyol approach for the synthesis of Cu 2 O NPs adhered on graphene oxide: A robust and efficient catalyst for 1, 2, 4-triazole and imidazo [1, 2-a] pyridine synthesis S Kujur, S Verma, A Kumar, R Sharma, DD Pathak New Journal of Chemistry 46 (17), 8094-8104 , 2022 2022 Citations: 5
Surface functionalization of mesoporous silica with maltodextrin for efficient adsorption of selective heavy metal ions from aqueous solution R Gupta, DD Pathak Colloids and Surfaces A: Physicochemical and Engineering Aspects 631, 127695 , 2021 2021 Citations: 35
Synthesis of 2-iminothiazolidin-4-ones using guanine functionalized SBA-16 as a solid base catalyst R Gupta, DD Pathak Tetrahedron Letters 85, 153497 , 2021 2021 Citations: 7
Synthesis and characterization of a recyclable graphene oxide-surface-engineered copper (II) Schiff base complex: Catalytic application in synthesis of 1, 2, 3-triazoles and 2H … A Kumar, S Verma, DD Pathak Journal of Environmental Chemical Engineering 9 (4), 105791 , 2021 2021 Citations: 29
Black TiO 2– x Nanoparticles Decorated with Ni Nanoparticles and Trace Amounts of Pt Nanoparticles for Photocatalytic Hydrogen Generation S Biswas, HY Lee, M Prasad, A Sharma, JS Yu, S Sengupta, DD Pathak, ... ACS Applied Nano Materials 4 (5), 4441-4451 , 2021 2021 Citations: 22
MOST CITED SCHOLAR PUBLICATIONS
Recovery of copper and recycling of acid from the leach liquor of discarded Printed Circuit Boards (PCBs) PK Choubey, R Panda, MK Jha, J Lee, DD Pathak Separation and Purification Technology 156, 269-275 , 2015 2015 Citations: 96
Synthesis and characterization of a Cu (II) Schiff base complex immobilized on graphene oxide and its catalytic application in the green synthesis of propargylamines S Kumari, A Shekhar, DD Pathak Rsc Advances 6 (19), 15340-15344 , 2016 2016 Citations: 87
Selective extraction and separation of Li, Co and Mn from leach liquor of discarded lithium ion batteries (LIBs) PK Choubey, OS Dinkar, R Panda, A Kumari, MK Jha, DD Pathak Waste Management 121, 452-457 , 2021 2021 Citations: 82
Synthesis, characterization and single crystal X-ray studies of pincer type Ni (II)-Schiff base complexes: Application in synthesis of 2-substituted benzimidazoles B Agrahari, S Layek, R Ganguly, N Dege, DD Pathak Journal of Organometallic Chemistry 890, 13-20 , 2019 2019 Citations: 81
Selective adsorption of toxic heavy metal ions using guanine-functionalized mesoporous silica [SBA-16-g] from aqueous solution R Gupta, SK Gupta, DD Pathak Microporous and Mesoporous Materials 288, 109577 , 2019 2019 Citations: 73
Novel approach to recover rare earth metals (REMs) from Indian coal bottom ash A Kumari, R Parween, S Chakravarty, K Parmar, DD Pathak, J Lee, ... Hydrometallurgy 187, 1-7 , 2019 2019 Citations: 73
HTPB-polyurethane: a versatile fuel binder for composite solid propellant AK Mahanta, DD Pathak Polyurethane 1, 229-262 , 2012 2012 Citations: 72
Synthesis and crystal structures of salen-type Cu (ii) and Ni (ii) Schiff base complexes: application in [3+ 2]-cycloaddition and A 3-coupling reactions B Agrahari, S Layek, R Ganguly, DD Pathak New Journal of Chemistry 42 (16), 13754-13762 , 2018 2018 Citations: 67
Synthesis and characterization of a new Pd (II)-Schiff base complex [Pd (APD) 2]: An efficient and recyclable catalyst for Heck-Mizoroki and Suzuki-Miyaura reactions S Layek, B Agrahari, DD Pathak Journal of Organometallic Chemistry 846, 105-112 , 2017 2017 Citations: 66
Rheokinetic analysis of hydroxy terminated polybutadiene based solid propellant slurry AK Mahanta, M Goyal, DD Pathak Journal of Chemistry 7 (1), 171-179 , 2010 2010 Citations: 63
Single pot fabrication of N doped reduced GO (N-rGO)/ZnO-CuO nanocomposite as an efficient electrode material for supercapacitor application CK Maity, G Hatui, K Verma, G Udayabhanu, DD Pathak, GC Nayak Vacuum 157, 145-154 , 2018 2018 Citations: 61
Synthesis and development of Chitosan anchored copper (II) Schiff base complexes as heterogeneous catalysts for N-arylation of amines S Kumari, DD Pathak Tetrahedron Letters 56 (27), 4135-4142 , 2015 2015 Citations: 61
Synthesis, crystal structures, and application of two new pincer type palladium (II)-Schiff base complexes in CC cross-coupling reactions B Agrahari, S Layek, R Ganguly, DD Pathak Inorganica Chimica Acta 471, 345-354 , 2018 2018 Citations: 60
Template-free single pot synthesis of SnS 2@ Cu 2 O/reduced graphene oxide (rGO) nanoflowers for high performance supercapacitors G Hatui, GC Nayak, G Udayabhanu, YK Mishra, DD Pathak New Journal of Chemistry 41 (7), 2702-2716 , 2017 2017 Citations: 60
Graphene oxide–TiO 2 composite: an efficient heterogeneous catalyst for the green synthesis of pyrazoles and pyridines S Kumari, A Shekhar, DD Pathak New Journal of Chemistry 40 (6), 5053-5060 , 2016 2016 Citations: 57
Hydrogeochemistry of coal mine water of North Karanpura coalfields, India: implication for solute acquisition processes, dissolved fluxes and water quality assessment B Neogi, AK Singh, DD Pathak, A Chaturvedi Environmental Earth Sciences 76 (14), 489 , 2017 2017 Citations: 55
Extraction of rare earth metals (REMs) from chloride medium by organo-metallic complexation using D2EHPA A Kumari, R Panda, JY Lee, T Thriveni, MK Jha, DD Pathak Separation and purification technology 227, 115680 , 2019 2019 Citations: 51
Commercial processes for the extraction of platinum group metals (PGMs) R Panda, MK Jha, DD Pathak TMS Annual Meeting & Exhibition, 119-130 , 2018 2018 Citations: 51
An unprecedented tridentate mode of co-ordination of a BINAP ligand: Synthesis and crystal structures of [Ru (η5-C5H5){(R)-(BINAP)}]+ CF3SO3− and Ru (η5-C5H5){(R)-(BINAP)} I DD Pathak, H Adams, NA Bailey, PJ King, C White Journal of organometallic chemistry 479 (1-2), 237-245 , 1994 1994 Citations: 47
Palladium nanoparticles immobilized on a magnetic chitosan-anchored Schiff base: applications in Suzuki–Miyaura and Heck–Mizoroki coupling reactions S Kumari, S Layek, DD Pathak New Journal of Chemistry 41 (13), 5595-5604 , 2017 2017 Citations: 45