Personal Information

Dr. Hemant Joshi

Assistant Professor
Department of Chemistry

PhD - Indian Institute of Technology Delhi, Post-doctoral Research - Texas A&M University, College Station, Tx, USA

hemant.joshi@curaj.ac.in

Synthetic Inorganic  and Organic Chemistry

Molecular rotors and molecular machines 

Metal mediated small molecule activation

Organochalcogen Chemistry

Multifold ring-closing alkene metathesis

Coordination chemistry of platinum group metal complexes

Site-selective Catalysis 

 

Group Webpage:  https://sites.google.com/view/joshisresearchgroup 

 

Current Position:

Assistant Professor (25th June 2019 - till date), 

Department of Chemistry,

Central University of Rajasthan,

Ajmer, Rajasthan, India

Professional Experience:  

Assistant Professor (DST Inspire Faculty, Aug. 2018 – June 2019),

Department of Chemistry,

BITS Pilani, Pilani Campus, Rajasthan

Postdoctoral Research Associate (Feb. 2016 – Aug. 2018),

Department of Chemistry,

Texas A&M University, College Station, USA

Supervisor - Prof. John A. Gladysz

Research Associate (March 2015 – Feb. 2016),

Department of Chemistry,

IIT Delhi, New Delhi, India

Supervisor - Prof. Ajai K. Singh

PhD: July 2010- Oct. 2015

Department of Chemistry, IIT Delhi

New Delhi, Hauz Khas, India

Supervisor - Prof. Ajai K. Singh

MSc: July 2008 - June 2010

Malaviya National Institute of Technology Jaipur, India  

BSc: July 2005 - June 208

University of Rajasthan, Jaipur, India  

S. No. Authors Title of Article Journal/Conference Details Journal/Conference Publication Year
1 .

Publications after joining CuRaj:

41. S. Kumar, S. Singh, N. Mathur, P. Roy, and H. Joshi*, Titania Nanorods Supported Mercaptoundecanoic acid Grafted Palladium Nanoparticles as Highly Reusable Heterogeneous Catalyst for Substrate Dependent Ullmann Coupling and Debromination of Aryl Bromides. Inorg. Chem, 2023, Accepted. 

40. Y. Zhu, M. Stollenze, S. R. Zarcone, S. Kharel, A. Kumar, H. Joshi, N. Bhuvanesh, and J. Gladysz*,  Syntheses, Homeomorphic and Configurational Isomerizations, and Structures of Macrocyclic Aliphatic Dibridgehead Diphosphines; Molecules that Turn Themselves Inside Out. Chem. Sci, 2022, 13, 13368-13386.

39. S. Bhatt, N. Meena, M. Kumar, N. Bhuvanesh, A. Kumar, A. K. Sharma and H. Joshi*, Design and Syntheses of Ruthenium ENE (E = S, Se) Pincer Complexes: A Versatile System for Catalytic and Biological Applications. Chem. Asian J., 2022, 17, e202200736.

38. S. Kumar, S. Kumari, S. Singh, P. J. Boruah, A. K. Paul, P. Roy, and H. Joshi*, Oxidized Charcoal-Supported Thiol-Protected Palladium Nanoparticles for Cross Dehydrogenative Coupling of Heteroarenes. ACS Applied Nano Matter., 2022, 5, 2644-2654.

37. N. Meena, S. Kumar, V. N. Shinde, S. R. Reddy, Himanshi, N. Bhuvanesh, A. Kumar and H. Joshi*, Bulky selenium ligand stabilized trans-palladium dichloride complexes as catalyst for silver-free decarboxylative coupling of coumarin-3-carboxylic acids. Chem. Asin J., 2021, 17, e202101199.

36. S. Kumar, S. Singh, J. Gadwal, P. Makar, and H. Joshi*, Regioselective C-H arylation of imidazoles employing macrocyclic palladium(II) complex of organoselenium ligand. J. Organomet. Chem., 2021, 946-947, 121907.

35. N. Meena, S. Sharma, R. P. Bhatt, V. N. Shinde, A. P. Sunda, N. Bhuvanesh, A. Kumar and H. Joshi*, A selenium coordinated palladium(II) trans-dichloride molecular rotor as a catalyst for site selective annulation of 2‐arylimidazo[1,2‐a]pyridines. Chem. Commun., 2020, 56, 10223-10226. (Interview of Dr. Joshi in ChemComm Blog: https://blogs.rsc.org/cc/2020/08/14/chemcomm-milestones-hemant-joshi/?doing_wp_cron=1597640972.7117760181427001953125).

34. V. N. Shinde, N. Bhuvanesh, A. Kumar and H. Joshi*, Design and Syntheses of Palladium Complexes of NNN/CNN Pincer Ligands: Catalyst for Cross Dehydrogenative Coupling Reaction of Heteroarenes. Organometallics, 2020, 39, 324-333.

33. R. P. Bhatt, N. Bhuvanesh, K. N. Sharma and H. Joshi*, Palladium Complexes of Thio/Seleno-Ether containing N-Heterocyclic Carbene: Efficient and Reusable Catalyst for Regioselective C-H Bond Arylation. Eur. J. Inorg. Chem., 2020, 2020, 532-540.

32. R. P. Bhatt, A. K. Sharma, Himanshi, N. Bhuvanesh, and H. Joshi*, Palladium complexes of chalcogenoethanamine (S/Se) bidentate ligands: Applications in catalytic arylation of CH and OH bonds. Polyhedron, 2020, 185, 114597.

31. A. K. Sharma, H. Joshi, and A. K. Singh, Catalysis with magnetically retrievable and recyclable nanoparticles layered with Pd(0) of C-C/C-O coupling in water. RSC Adv., 2020, 10, 6452–6459. (Highlighted in Synfacts by Y. Uozumi)

Publications from BITS Pilani:

30. A. K. Sharma, H. Joshi, R. Bhaskar and A. K. Singh, Solvent-tailored Pd3P0.95 nano catalyst for amide–nitrile inter-conversion, the hydration of nitriles and transfer hydrogenation of the C=O bond. Dalton Trans, 2019, 48, 10962.

29. A. K. Sharma, H. Joshi, K. Ojha and A. K. Singh, Graphene oxide supported cobalt phosphide nanorods designed from a molecular complex for efficient hydrogen evolution at low overpotential. Chem. Commun., 2019, 55, 2186.

Publications from Texas A&M:

28. M. Stollenz, H. Joshi, A. Ehnbom, T. Fiedler, S. Kharel, J. H. Reibenspies, N. Bhuvanesh, M. B. Hall, J. A. Gladysz, Platinum Complexes Containing or Derived from Olefinic Phosphines P(X)((CH2)6CH=CH2)2; Ring Closing Metatheses, Structures, and trans/cis Isomerizations. Polyhedron, 2019, 158, 325.

27. S. Kharel,‡ H. Joshi,‡ N. Bhuvanesh and J. A. Gladysz, Syntheses, Structures, and Thermal Properties of Gyroscope Like Complexes Con­sisting of PtCl2 Rotators Encased in Macrocyclic Dibridgehead Diphosphines P((CH2)n)3P with Extended Methylene Chains (n = 20/22/30), and Isomers Thereof. Organometallics, 2018, 37, 2991. (‡ = equal contribution).

26. H. Joshi,‡ S. Kharel,‡ A. Ehnbom, K. Skopek, G. D. Hess, T. Fiedler, F. Hampel, N. Bhuvanesh, and J. A. Gladysz, Three Fold Intramolecular Ring Closing Alkene Metatheses of Square Planar Complexes with cis Phosphorus Donor Ligands P(X(CH2)m­CH=CH2)3 (X/m = –/5-10, O/3-5); Syntheses, Structures, and Thermal Properties of Macrocyclic Dibridgehead Diphosphorus Complexes. J. Am. Chem. Soc., 2018, 140, 8463. (‡ = equal contribution). (Highlighted on Front Cover of JACS, Selected as Spotlight Article by JACS J. Am. Chem. Soc., 2018, 140, 8357)

25. H. Joshi, S. Kharel, N. Bhuvanesh and J. A. Gladysz, Synthesis, Structure, and Reactivity of Doubly trans-Spanning bis(dialkylselenide) Complexes; A New Route to Diselenamacrocycles via Alkene Metathesis in Metal Coordination Spheres. J. Organomet. Chem., 2018, 875, 80.

24. S. Kharel, H. Joshi, S. Bierschenk, M. Stollenz, D. Taher, N. Bhuvanesh and J. A. Gladysz, Homeomorphic Isomerization as a Design Element in Container Molecules; Binding, Displacement, and Selective Transport of MCl2 Species (M = Pt, Pd, Ni). J. Am. Chem. Soc., 2017, 139, 2172.

23. H. Joshi, S. K. Ghosh, and J. A. Gladysz, Enantioselective Additions of Stabilized Carbanions to Imines Generated from α-Amido Sulfones using Lipophilic Salts of Chiral tris(1,2-diphenylethylenediamine) Cobalt(III) Trications as Hydrogen Bond Donor Catalysts. Synthesis, 2017, 49, 3905. (Highlighted on Organic Chemistry Portal Website. https://www.organic-chemistry.org/abstracts/lit5/971.shtm)

Publications from IIT Delhi:

22. A. K. Sharma, H. Joshi, R.Bhaskar, and A. K. Singh, Complexes of (η5-Cp*) Ir(III) with 1-Benzyl-3-Phenylthio/selenomethyl-1,3-Dihydrobenzoimidazole-2-Thione/Selenone: Catalyst for Oxidation and 1,2-substituted Benzimidazole Synthesis. Dalton Trans, 2017, 46, 2228.

21. A. K. Sharma, H. Joshi, R.Bhaskar, S. Kumar and A. K. Singh, Palladacycles of sulfated/selenatedschiff base of ferrocene-carboxaldehyde as catalysts for O-arylation and Suzuki–Miyaura coupling. Dalton Trans., 2017, 46, 2485. (Most cited Organometallic chemistry work of 2017).

20. R. Bhaskar, H. Joshi, A. K. Sharma, and A. K. Singh, Reusable Catalyst for Transfer Hydrogenation of Aldehydes and Ketones Designed by Anchoring Palladium as Nano-Particles on Graphene Oxide Functionalized with Selenated Amine. ACS Applied Materials & Interfaces, 2017, 9, 2223. (Highlighted as Most Read Materials Science & Engineering Articles of Jan. 2017 by ACS. http://axial.acs.org/2017/03/03/materials-science-engineering/).

19. K. N. Sharma, A. K. Sharma, H. Joshi, and A. K. Singh, Polymeric Complex of 1-Phenylsulfanyl/selenylmethyl-1H-Benzotriazole with Ag(I): Pre-catalyst for A3 Coupling Resulting Propargylamines on a Gram/Lab Scale. ChemSelect, 2016, 1, 3573.

18. S. Gupta, H. Joshi, N. Jain, and A. K. Singh, Cu6Se4.5 Nanoparticles from a Single Source Precursor: Recyclable and Efficient Catalyst for Cross-Dehydrogenative Coupling of Tertiary Amines with Terminal Alkynes. Journal of Molecular Catalysis A: Chemical, 2016, 423, 135.

17. M. P. Singh, F. Saleem, G. K. Rao, S. Kumar, H. Joshi, and A. K. Singh, Palladacycles of unsymmetrical (N, C−, E)(E= S/Se) pincers based on indole: their synthesis, structure and application in the catalysis of Heck coupling and allylation of aldehydes. Dalton Trans. 2016, 45, 6718.

16. K. N. Sharma, H. Joshi, O. Prakash, A. K. Sharma, R. Bhaskar, and A. K. Singh, Pyrazole- Stabilized Dinuclear Palladium (II) Chalcogenolates Formed by Oxidative Addition of Bis [2‐(4‐bromopyrazol‐1‐yl) ethyl] Dichalcogenides to Palladium (II)–Tailoring of Pd–S/Se Nanoparticles. Eur. J. Inorg. Chem. 2015, 4829.

15. H. Joshi, O. Prakash, A. K. Sharma, K. N. Sharma, and A. K. Singh, Suzuki Coupling Reactions Catalyzed with Palladacycles and Palladium (II) Complexes of 2‐Thiophenemethylamine‐Based Schiff Bases: Examples of Divergent Pathways for the Same Ligand. Eur. J. Inorg. Chem. 2015, 1542.

14. O. Prakash, H. Joshi, K. N. Sharma, and A. K. Singh, Catalytic Synthesis of Bi/Teraryl in Aqueous Medium using Palladium(II) Complexes Designed with 2-(Pyridine-2-ylmethyl sulfanyl)benzoic acid. Eur. J. Inorg. Chem. 2015, 520.

13. O. Prakash, H. Joshi, U. Kumar, A. K. Sharma and A. K. Singh, Acridine based (S,N,S) pincer ligand: designing of silver(I) complexes for efficient activation of A3(aldehyde, alkyne and amine) coupling. Dalton Trans., 2015, 44, 1962.

12. O. Prakash, H. Joshi, K. N. Sharma, P. L. Gupta and A. K. Singh, Transfer Hydrogenation (pH independent) of Ketones and Aldehydes in Water with Glycerol: Ru, Rh and Ir Catalysts with COOH Group Near Metal on (Phenylthio)methyl-2-Pyridine Scaffold. Organometallics, 2014, 33, 3804.

11. A. K. Sharma, H. Joshi, K. N. Sharma, P. L. Gupta, and A. K. Singh, 2-Propanol Vs Glycerol as Hydrogen Source in Catalytic Activation of Transfer Hydrogenation with (η6-benzene)Ru(II) Complexes of Unsymmetrical Bidentate Chalcogen Ligands. Organometallics, 2014, 33, 3629.

10. H. Joshi, K. N. Sharma, A. K. Sharma, O. Prakash, A. Kumar and A. K. Singh, Magnetite nanoparticles coated with ruthenium via SePh layer as a magnetically retrievable catalyst for the selective synthesis of primary amides in an aqueous medium. Dalton Trans., 2014, 43, 12365.

9. O. Prakash, K. N. Sharma, H. Joshi, P. L. Gupta and A. K. Singh, Half-sandwich rhodium/ iridium(III) complexes designed with Cp* and 1,2-bis(phenylchalcogenomethyl) benzene as catalysts for transfer hydrogenation in glycerol. Organometallics, 2014, 33, 2535.

8. O. Prakash, K. N. Sharma, H. Joshi, P. L. Gupta and A. K. Singh, (η5-Cp*)Rh/Ir(III) complexes with bis(chalcogenoethers) (E, E' ligands; E = S/Se; E' = S/Se): Synthesis, structure and applications in catalytic oppenauer-type oxidation and transfer hydrogenation. Organometallics, 2014, 33, 983.

7. H. Joshi, K. N. Sharma, A. K. Sharma and A. K. Singh, Palladium-phosphorous/sulfur nanoparticles (NPs) decorated on graphene oxide: synthesis using same precursor for NPs and catalytic applications in Suzuki-Miyaura coupling. Nanoscale, 2014, 6, 4588. (Appeared as most read article).

6. K. N. Sharma, H. Joshi, A. K. Sharma, O. Prakash and A. K. Singh, Single source precursor routes for synthesis of PdTe nanorods and particles: solvent dependent control on shapes. Chem. Commun., 2013, 49, 9344.

5. H. Joshi, K. N. Sharma, A. K. Sharma, O. Prakash and A. K. Singh, Graphene oxide grafted with Pd17Se15 nano-particles generated from a single source precursor as a recyclable and efficient catalyst for C–O coupling in O-arylation at room temperature. Chem. Commun., 2013, 49, 7483. (Highlighted on Cover Page, Highlighted by cheminform abstract).

4. K. N. Sharma, H. Joshi, A. K. Sharma, O. Prakash and A. K. Singh, Selenium-containing N-heterocyclic carbenes and their first palladium(II) complexes: Synthesis, structure and pendent alkyl chain length dependent catalytic activity for Suzuki–Miyaura coupling. Organometallics, 2013, 32, 2443. (Listed among “Most Read Articles” published by Organometallics).

3. O. Prakash, K. N. Sharma, H. Joshi, P. L. Gupta and A. K. Singh, Half sandwich complexes of chalcogenated pyridine based bi-(N, S/Se) and terdentate (N, S/Se, N) ligands with (η6-benzene)ruthenium(II): synthesis, structure and catalysis of transfer hydrogenation of ketones and oxidation of alcohols. Dalton Trans., 2013, 42, 8736.

2. H. Joshi, K. N. Sharma, V. V. Singh, P. Singh and A. K. Singh, Selenium containing imidazolium salt in designing single source precursors for silver bromide and selenide nano-particles. Dalton Trans., 2013, 42, 2366. (Listed among “Most Read Articles” published by Dalton Transaction).

1. K. N. Sharma, H. Joshi, V. V. Singh, P. Singh and A. K. Singh, Palladium(II) complexes of pyrazolatedthio/selenoethers: syntheses, structures, single source precursors of Pd4Se and PdSenano-particles and potential for catalyzing Suzuki–Miyaura coupling. Dalton Trans., 2013, 42, 3908.

SPONSORED RESEARCH PROJECTS
1. Title: Synthesis of Metal Complexes of Mechanically Interlocked Molecules and their Applications (2018 - 2023)
Sponsoring Agency: Department of Science and Technology, New Delhi, India (Under DST Inspire Faculty Scheme)
Amount: 35 Lakhs 

2. Title: Intramolecular Secondary Interactions Controlled Molecular Rotors as Catalyst for Site Selective Annulation Reactions to Synthesize Energetically less Favored Isomers (2021 - 2023)
Sponsoring Agency: Science and Engineering Research Board, New Delhi, India (Under SRG Scheme)
Amount: 33 Lakhs 

Attended

Invited Talks

1. H. Joshi, Trans-Palladium Dichloride Complex of Organoselenium Ligand as Catalyst for Reverse Regioselective Annulation of 2-Arylimidazo[1,2-a]pyridines. Trends in Organometallic Chemistry, ACS Organometallics, 28th, November 2022.

2. H. Joshi, Molecular Rotors for Site-selective Organic Transformations. 27th ISCB International Conference (ISCBC-2022), BIT Mesra, Ranchi, 16-19, November 2022.

3. H. Joshi, A Molecular Rotor Possessing a Cl-Pd-Cl “Spoke” on a Se-Pd-Se “Axle”: Efficient Catalyst for Regioselective C-5 Arylation of Imidazoles. 26th ISCB International Conference (ISCBC-2020), Nirma University Ahmedabad, 22-24, January 2020.

4. H. Joshi, Dibridgehead Diphosphine Cage as Molecular Receptor for Precious Metal Capture and Transport. 25th ISCB International Conference (ISCBC-2019), CDRI Lucknow, 12-14, January 2019.

5. H. Joshi, Molecular Double-Dutch: Multiring Metal Complexes that Really Know how to Jump. Frontiers at the Chemistry-Allied Sciences Interface (FCASI-2018), University of Rajasthan, Jaipur, 21-22, December 2018.

Oral Presentations

1. Palladium Anchorded on Graphene Oxide and Fe3O4 as Catalyst for O-Arylation Reaction. H. Joshi and A. K. Singh, American Chemical Society on Campus Event (ACSOC-2015), IIT Delhi, 31 Sep-01 Oct, 2015.

2. Palladium(II) complexes of selenatedN-heterocyclic carbene ligands: pendent alkyl chain length dependent catalytic C−C coupling reaction. H. Joshi, K. N. Sharma and A. K. Singh, Recent Advancements in Chemical Sciences (RAICS-2015), MNIT Jaipur, 21-23 August, 2015.

3. Palladium-Phosphorous/Sulfur Nanoparticles (NPs) Decorated On Graphene Oxide: Synthesis Using Same Precursor for NPs and Catalytic Applications in Suzuki-Miyaura coupling Reaction. H. Joshi, A. K. Singh, Chemistry at the Interface of Innovative Researches in Science and Technology (CIIRST 2014), Allahabad, 27-28 Feb 2014.

4. Pd17Se15 Nano-Particles Grafted Graphene Oxide: Efficient and Recyclable Catalyst for C−O Coupling. H. Joshi, K. N. Sharma, A. Sharma and A. K. Singh, Modern Trends in Inorganic Chemistry (MTIC-XV), IIT Roorkee, Dec. 13-16, 2013.

Poster Presentations and Participation

1. Participation in Indian Roadshow Workshop, Organized by Royal Society of Chemistry, IIT Delhi, Nov. 4, 2014.

2. Graphene Oxide Grafted With PdP2 and Pd4S Nanoparticles Generated From a Single Source Precursor: Catalyst For Suzuki-Miyaura Coupling Reaction. H. Joshi, K. N. Sharma, A. Sharma, and A. K. Singh, International Conference on Nano Science and Technology (ICONSAT-2014), INST Mohali, 3-5 March, 2014.

3. 2-hydroxy-4-methoxy benzophenone and 2-hydroxy acetophenone with 2-thiophene methyl amine: Designing, Pd(II) complexes for efficient Suzuki-Miyaura C-C coupling reaction. H. Joshi, K. N. Sharma, and A. K. Singh, New Directions in Chemical Sciences (NDCS-2012), IIT Delhi, New Delhi, India, Dec. 7-9, 2012.

4. Palladium(II) complexes of O, N, S, Se hybrid ligands for efficient Suzuki-Miyaura C-C coupling reaction. H. Joshi, G. K. Rao, F. Saleem and A. K. Singh, 3rd Asian Conference on Coordination Chemistry (ACCC-3), India Habitat Center, New Delhi, India, October 17−20, 2011.

5. Participation in National Review and Coordination Meeting of Nano Mission Council (NSNT 2011), IIT Delhi, Feb. 25-27, 2011.