ANUP MANDAL

Scopus Publications

LMCT-Driven Iron Photocatalysis: Mechanistic Insights and Synthetic Applications
Amrita Chaudhuri, Luca Mareen Denkler, Qing Zhuo, Anup Mandal, Ala Bunescu
Chemistry A European Journal, 2025
Iron‐based photocatalysis has emerged as a sustainable and versatile platform for facilitating a wide range of chemical transformations, offering an appealing alternative to precious metal photocatalysts. Among the various activation modes, ligand‐to‐metal charge transfer (LMCT)‐driven homolysis of Fe(III)–L(ligand) bonds has garnered considerable attention due to its ability to generate reactive radical species under mild conditions, without requiring the matching of substrates’ redox potentials. In this review, we present a comprehensive overview of recent developments in LMCT‐driven iron photocatalysis, with a particular focus on both mechanistic insights and synthetic applications published in the last five years. We classify Fe(III)–L homolysis into four major categories based on the nature of the coordinated ligand: halides, carboxylates, alkoxides, and azide. For a few cases, mechanistic understanding derived from spectroscopic studies, computational modeling, and kinetic investigations is discussed in more detail. We further highlight the expanding repertoire of synthetic transformations enabled by LMCT‐driven iron photocatalysis, including C─H functionalization, alkene functionalization, cross‐coupling, oxidation, and radical‐mediated bond formation. Finally, we provide future perspectives on the continued development of LMCT‐based iron photocatalysis as a broadly applicable platform for sustainable organic synthesis. This review aims to serve as a valuable resource for researchers interested in leveraging the full potential of LMCT‐mediated iron photocatalysis in modern organic chemistry.
Extensive Studies on the Synthesis and Characterization of π-Arene Chromium Complexes and Their Performance in SNAr and Suzuki–Miyaura Cross-Coupling Reactions
Clemens Maurer, Ruben Fleischer, Anup Mandal, Kavin Raj Kumar Chandramohan, Fabian Christophe Herpell, et al.
Chemistry an Asian Journal, 2025
We report an efficient synthesis of a series of new (η6‐arene)Cr(CO)3 complexes via ligand exchange strategy under thermal conditions using chromium hexacarbonyl and readily accessible arene feedstocks. We optimized the previously reported procedures and found that the high excess of arenes usually employed is not required to access the π‐arene chromium complexes in high yields. Consequently, the revised procedure simplifies the purification of chromium tricarbonyl complexes bearing arenes with high boiling points. The reaction is amenable to provide (η6‐arene)Cr(CO)3 complexes decorated with various functional groups. Notably, the novel and already reported chromium complexes with missing spectroscopic characterization were fully characterized by nuclear magnetic resonance (NMR), infrared (IR) spectroscopies, and high‐resolution mass spectrometry (HRMS). Besides, we report the structure of 20 chromium complexes characterized via X‐ray crystallography. The potential application of these π‐arene chromium complexes has also been exploited toward the selective construction of poly(hetero)aryls possessing a single chromium tricarbonyl unit through SNAr and Suzuki–Miyaura cross‐coupling reactions. This work is meant to be a practical guide for the synthesis of π‐arene chromium complexes and to fill the gap in their spectroscopic characterization.
Selective C-H Borylation of Polyaromatic Compounds Enabled by Metal-Arene π-Complexation
Anup Mandal, Clemens Maurer, Christoph Plett, Kavin Raj Kumar Chandramohan, Ruben Fleischer, et al.
Journal of the American Chemical Society, 2025
Palladium-Catalyzed Electrooxidative Hydrofluorination of Aryl-Substituted Alkenes with a Nucleophilic Fluorine Source
Anup Mandal, Jieun Jang, Baeho Yang, Hyunwoo Kim, Kwangmin Shin
Organic Letters, 2023
Regioselective C-H Alkenylation and Unsymmetrical Bis-olefination of Heteroarene Carboxylic Acids with Ruthenium Catalysis in Water
Anup Mandal, Ratnadeep Bera, Mahiuddin Baidya
Journal of Organic Chemistry, 2021
Cross-Dehydrogenative Coupling/Annulation of Arene Carboxylic Acids and Alkenes in Water with Ruthenium(II) Catalyst and Air
Anup Mandal, Bholanath Garai, Suman Dana, Ratnadeep Bera, Mahiuddin Baidya
Chemistry an Asian Journal, 2020
A cross‐dehydrogenative coupling of arene carboxylic acids with olefins is reported with ruthenium(II) catalyst employing air and water as green oxidant and solvent, respectively. It offers a robust synthesis of valuable phthalide molecules. A one‐pot sequential strategy is also disclosed to access Heck‐type products that are apparently difficult to make directly from arene carboxylic acids.
Copper-Catalyzed 8-Aminoquinoline-Directed Oxidative C-H/N-H Coupling for N-Arylation of Sulfoximines
Gowri Sankar Grandhi, Suman Dana, Anup Mandal, Mahiuddin Baidya
Organic Letters, 2020
Atom Transfer Oxidative Radical Cascade of Aryl Alkynoates towards 1,1-Dichalcogenide Olefins
Harekrishna Sahoo, Isai Ramakrishna, Anup Mandal, Mahiuddin Baidya
Chemistry an Asian Journal, 2019
An oxidative trifunctionalization of aryl alkynoates has been devised via the chalcogenide radical triggered intramolecular 1,4‐aryl migration/decarboxylation cascade to prepare 1,1‐dichalcogenide tetrasubstituted alkenes in high yields (up to 98 %). This operationally simple reaction proceeds under metal‐free conditions, can be executed on gram scale, and highlights formal 1,1‐difunctionalization of alkynes. Synthetic potential of this protocol was demonstrated through a twofold cascade rearrangement to access highly conjugated tetra‐selenylated alkenes along with a cross‐dehydrogenative annulation to prepare fluorene derivative.
Recent Advancements in Transition-Metal-Catalyzed One-Pot Twofold Unsymmetrical Difunctionalization of Arenes
Anup Mandal, Suman Dana, Deepan Chowdhury, Mahiuddin Baidya
Chemistry an Asian Journal, 2019
Transition‐metal‐catalyzed direct C−H bond activation reactions have been embraced as a powerful synthetic tool to access diverse functionalized arenes. However, site‐selective incorporation of multiple distinct functionalities in an arene has always been a formidable challenge. Recent efforts from the synthetic community have disclosed a few dynamic synthetic approaches to fabricate multifunctionalized arenes in one‐pot using a single catalytic system. These reports manifested the immense potential of such approaches to expedite contemporary organic synthesis towards building molecular complexity. In this minireview, we have illustrated the recent progress in this area, highlighting the contribution from several synthetic chemists including our group.
Streamlined Ruthenium(II) Catalysis for One-Pot 2-fold Unsymmetrical C-H Olefination of (Hetero)Arenes
Anup Mandal, Gunjan Mehta, Suman Dana, Mahiuddin Baidya
Organic Letters, 2019
A ruthenium-catalyzed free amine directed (5+1) annulation of anilines with olefins: Diverse synthesis of phenanthridine derivatives
Deepan Chowdhury, Suman Dana, Anup Mandal, Mahiuddin Baidya
Chemical Communications, 2019
Ruthenium(II) Catalysis/Noncovalent Interaction Synergy for Cross-Dehydrogenative Coupling of Arene Carboxylic Acids
Suman Dana, Deepan Chowdhury, Anup Mandal, Francis A. S. Chipem, Mahiuddin Baidya
ACS Catalysis, 2018
RuII-Catalyzed Annulative Coupling of Benzoic Acids with Vinyl Sulfone via Weak Carboxylate-Assisted C−H Bond Activation
Anup Mandal, Suman Dana, Deepan Chowdhury, Mahiuddin Baidya
Asian Journal of Organic Chemistry, 2018
Visible Light-Induced Synthetic Approach for Selenylative Spirocyclization of N-Aryl Alkynamides with Molecular Oxygen as Oxidant
Harekrishna Sahoo, Anup Mandal, Suman Dana, Mahiuddin Baidya
Advanced Synthesis and Catalysis, 2018
A Cross-Dehydrogenative Annulation Strategy towards Synthesis of Polyfluorinated Phenanthridinones with Copper
Anup Mandal, Jayaraman Selvakumar, Suman Dana, Upasana Mukherjee, Mahiuddin Baidya
Chemistry A European Journal, 2018
Ru(II)-Catalyzed Oxidative Heck-Type Olefination of Aromatic Carboxylic Acids with Styrenes through Carboxylate-Assisted C-H Bond Activation
Suman Dana, Anup Mandal, Harekrishna Sahoo, Sumitava Mallik, Gowri Sankar Grandhi, et al.
Organic Letters, 2018
Ruthenium(II)-Catalyzed Hydroarylation of Maleimides Using Carboxylic Acids as a Traceless Directing Group
Anup Mandal, Harekrishna Sahoo, Suman Dana, Mahiuddin Baidya
Organic Letters, 2017
Ruthenium(II)-Catalyzed ortho-C-H Chalcogenation of Benzoic Acids via Weak O-Coordination: Synthesis of Chalcogenoxanthones
Anup Mandal, Suman Dana, Harekrishna Sahoo, Gowri Sankar Grandhi, Mahiuddin Baidya
Organic Letters, 2017
Ru(II)-Catalyzed C-H Functionalization on Maleimides with Electrophiles: A Demonstration of Umpolung Strategy
Suman Dana, Anup Mandal, Harekrishna Sahoo, Mahiuddin Baidya
Organic Letters, 2017
Copper-catalyzed chelation-assisted synthesis of unsymmetrical aliphatic azo compounds
Suman Dana, Harekrishna Sahoo, Ayan Bhattacharyya, Anup Mandal, Edamana Prasad, et al.
Chemistryselect, 2017
Remote C–H Selenylation of 8-Amidoquinolines via Copper-Catalyzed Radical Cross-Coupling
Harekrishna Sahoo, Anup Mandal, Jayaraman Selvakumar, Mahiuddin Baidya
European Journal of Organic Chemistry, 2016
Copper-Catalyzed 8-Aminoquinoline-Directed Selenylation of Arene and Heteroarene C-H Bonds
Anup Mandal, Harekrishna Sahoo, Mahiuddin Baidya
Organic Letters, 2016

RECENT SCHOLAR PUBLICATIONS

Cobalt-Catalyzed Site Selective C–H Borylation of Polyarenes via π-Activation Strategy
X Zhu‡, A Mandal‡, M Zafar, C Maurer, G Schnakenburg, A Bunescu*
ChemRxiv Preprint, DOI: 10.26434/chemrxiv.15001073/v1 , 2026
2026
Conformation-Guided Meta-Selective C–H Borylation via Metal-Arene π-Complexation
A Mandal‡, C Maurer‡, M Zafar, A Chaudhuri, X Zhu, ...
ChemRxiv Preprint, doi.org/10.26434/chemrxiv.15000133/v1 , 2026
2026
LMCT-Driven Iron Photocatalysis: Mechanistic Insights and Synthetic Applications
A Chaudhuri*‡, LM Denkler‡, Q Zhuo‡, A Mandal*‡, A Bunescu*
Chemistry - A European Journal, 31, e02185 , 2025
2025
Citations: 25
Selective C–H Borylation of Polyaromatic Compounds Enabled by Metal-Arene π-Complexation
A Mandal‡, C Maurer‡, C Plett, KRK Chandramohan, R Fleischer, ...
Journal of the American Chemical Society, 147, 15281–15293 , 2025
2025
Citations: 8
Extensive Studies on the Synthesis and Characterization of π-Arene Chromium Complexes and Their Performance in SNAr and Suzuki-Miyaura Cross-Coupling Reactions
C Maurer‡, R Fleischer‡, A Mandal*‡, KRK Chandramohan, FC Herpell, ...
Chemistry – An Asian Journal, 20, e202500139 , 2025
2025
Citations: 2
Palladium-Catalyzed Electrooxidative Hydrofluorination of Aryl-Substituted Alkenes with a Nucleophilic Fluorine Source
A Mandal, J Jang, B Yang, H Kim*, K Shin*
Organic Letters, 25, 195–199 , 2023
2023
Citations: 21
Regioselective C−H Alkenylation and Unsymmetrical Bis-olefination of Heteroarene Carboxylic Acids with Ruthenium Catalysis in Water
A Mandal, R Bera, M Baidya*
The Journal of Organic Chemistry, 86, 62−73 , 2021
2021
Citations: 31
Copper-Catalyzed 8‑Aminoquinoline-Directed Oxidative C–H/N–H Coupling for N‑Arylation of Sulfoximines
GS Grandhi, S Dana, A Mandal, M Baidya*
Organic Letters, 22, 2606−2610 , 2020
2020
Citations: 45
Cross-Dehydrogenative Coupling/Annulation of Arene Carboxylic Acids and Alkenes in Water with Ruthenium(II) Catalyst and Air
A Mandal, B Garai, S Dana, R Bera, M Baidya*
Chemistry – An Asian Journal, 15, 4009−4013 , 2020
2020
Citations: 20
A Ruthenium-Catalyzed Free Amine Directed (5+1) Annulation of Anilines with Olefins: Diverse Synthesis of Phenanthridine Derivatives
D Chowdhury, S Dana, A Mandal, M Baidya*
Chemical Communications, 55, 11908–11911 , 2019
2019
Citations: 42
Recent Advancements in Transition-Metal-Catalyzed One-Pot Twofold Unsymmetrical Difunctionalization of Arenes
A Mandal‡, S Dana‡, D Chowdhury‡, M Baidya*
Chemistry – An Asian Journal, 14, 4074–4086 , 2019
2019
Citations: 43
Streamlined Ruthenium(II) Catalysis for One-Pot 2‑fold Unsymmetrical C–H Olefination of (Hetero)Arenes
A Mandal, G Mehta, S Dana, M Baidya*
Organic Letters, 21, 5879−5883 , 2019
2019
Citations: 29
Atom Transfer Oxidative Radical Cascade of Aryl Alkynoates towards 1,1-Dichalcogenide Olefins
H Sahoo, I Ramakrishna, A Mandal, M Baidya*
Chemistry – An Asian Journal, 14, 4549–4552 , 2019
2019
Citations: 15
Ruthenium(II) Catalysis/Noncovalent Interaction Synergy for Cross-Dehydrogenative Coupling of Arene Carboxylic Acids
S Dana, D Chowdhury, A Mandal, FAS Chipem, M Baidya*
ACS Catalysis, 8, 10173−10179 , 2018
2018
Citations: 64
Ru(II)-Catalyzed Annulative Coupling of Benzoic Acids with Vinyl Sulfone via Weak Carboxylate-Assisted C–H Bond Activation
A Mandal, S Dana, D Chowdhury, M Baidya*
Asian Journal Of Organic Chemistry, 7, 1302–1306 , 2018
2018
Citations: 21
A Cross-Dehydrogenative Annulation Strategy towards Synthesis of Polyfluorinated Phenanthridinones with Copper
A Mandal, J Selvakumar, S Dana, U Mukherjee, M Baidya*
Chemistry – A European Journal, 24, 3448–3454 , 2018
2018
Citations: 20
Visible Light-Induced Synthetic Approach for Selenylative Spirocyclization of N-Aryl Alkynamides with Molecular Oxygen as Oxidant
H Sahoo, A Mandal, S Dana, M Baidya*
Advanced Synthesis & Catalysis, 360, 1099–1103 , 2018
2018
Citations: 106
Ru(II)-Catalyzed Oxidative Heck-Type Olefination of Aromatic Carboxylic Acids with Styrenes through Carboxylate-Assisted C–H Bond Activation
S Dana, A Mandal, H Sahoo, S Mallik, GS Grandhi, M Baidya*
Organic Letters, 20, 716−719 , 2018
2018
Citations: 36
Study of Antioxidant Property of the Rhizome Extract of Polygonatum cirrhifolium (Mahameda) and its use in the green synthesis of Gold nanoparticles
SS Dash, A Mandal, BG Bag*
Prayogik Rasayan, 1, 66-70 , 2017
2017
Citations: 1
Ruthenium(II)-Catalyzed Hydroarylation of Maleimides Using Carboxylic Acids as a Traceless Directing Group
A Mandal, H Sahoo, S Dana, M Baidya*
Organic Letters, 19, 4138−4141 , 2017
2017
Citations: 113

MOST CITED SCHOLAR PUBLICATIONS

Copper-Catalyzed 8-Aminoquinoline-Directed Selenylation of Arene and Heteroarene C–H Bonds
A Mandal, H Sahoo, M Baidya*
Organic Letters, 18, 3202−3205 , 2016
2016
Citations: 122
Ruthenium(II)-Catalyzed Hydroarylation of Maleimides Using Carboxylic Acids as a Traceless Directing Group
A Mandal, H Sahoo, S Dana, M Baidya*
Organic Letters, 19, 4138−4141 , 2017
2017
Citations: 113
Ruthenium(II)-Catalyzed ortho-C–H Chalcogenation of Benzoic Acids via Weak O‑Coordination: Synthesis of Chalcogenoxanthones
A Mandal, S Dana, H Sahoo, GS Grandhi, M Baidya*
Organic Letters, 19, 2430−2433 , 2017
2017
Citations: 113
Visible Light-Induced Synthetic Approach for Selenylative Spirocyclization of N-Aryl Alkynamides with Molecular Oxygen as Oxidant
H Sahoo, A Mandal, S Dana, M Baidya*
Advanced Synthesis & Catalysis, 360, 1099–1103 , 2018
2018
Citations: 106
Ruthenium(II) Catalysis/Noncovalent Interaction Synergy for Cross-Dehydrogenative Coupling of Arene Carboxylic Acids
S Dana, D Chowdhury, A Mandal, FAS Chipem, M Baidya*
ACS Catalysis, 8, 10173−10179 , 2018
2018
Citations: 64
Ru(II)-Catalyzed C–H Functionalization on Maleimides with Electrophiles: A Demonstration of Umpolung Strategy
S Dana, A Mandal, H Sahoo, M Baidya*
Organic Letters, 19, 1902−1905 , 2017
2017
Citations: 54
Copper-Catalyzed 8‑Aminoquinoline-Directed Oxidative C–H/N–H Coupling for N‑Arylation of Sulfoximines
GS Grandhi, S Dana, A Mandal, M Baidya*
Organic Letters, 22, 2606−2610 , 2020
2020
Citations: 45
Recent Advancements in Transition-Metal-Catalyzed One-Pot Twofold Unsymmetrical Difunctionalization of Arenes
A Mandal‡, S Dana‡, D Chowdhury‡, M Baidya*
Chemistry – An Asian Journal, 14, 4074–4086 , 2019
2019
Citations: 43
Remote C–H Selenylation of 8‐Amidoquinolines via Copper‐Catalyzed Radical Cross‐Coupling
H Sahoo, A Mandal, J Selvakumar, M Baidya*
European Journal of Organic Chemistry, 2016, 4321−4327 , 2016
2016
Citations: 43
A Ruthenium-Catalyzed Free Amine Directed (5+1) Annulation of Anilines with Olefins: Diverse Synthesis of Phenanthridine Derivatives
D Chowdhury, S Dana, A Mandal, M Baidya*
Chemical Communications, 55, 11908–11911 , 2019
2019
Citations: 42
Ru(II)-Catalyzed Oxidative Heck-Type Olefination of Aromatic Carboxylic Acids with Styrenes through Carboxylate-Assisted C–H Bond Activation
S Dana, A Mandal, H Sahoo, S Mallik, GS Grandhi, M Baidya*
Organic Letters, 20, 716−719 , 2018
2018
Citations: 36
Regioselective C−H Alkenylation and Unsymmetrical Bis-olefination of Heteroarene Carboxylic Acids with Ruthenium Catalysis in Water
A Mandal, R Bera, M Baidya*
The Journal of Organic Chemistry, 86, 62−73 , 2021
2021
Citations: 31
Streamlined Ruthenium(II) Catalysis for One-Pot 2‑fold Unsymmetrical C–H Olefination of (Hetero)Arenes
A Mandal, G Mehta, S Dana, M Baidya*
Organic Letters, 21, 5879−5883 , 2019
2019
Citations: 29
LMCT-Driven Iron Photocatalysis: Mechanistic Insights and Synthetic Applications
A Chaudhuri*‡, LM Denkler‡, Q Zhuo‡, A Mandal*‡, A Bunescu*
Chemistry - A European Journal, 31, e02185 , 2025
2025
Citations: 25
Palladium-Catalyzed Electrooxidative Hydrofluorination of Aryl-Substituted Alkenes with a Nucleophilic Fluorine Source
A Mandal, J Jang, B Yang, H Kim*, K Shin*
Organic Letters, 25, 195–199 , 2023
2023
Citations: 21
Ru(II)-Catalyzed Annulative Coupling of Benzoic Acids with Vinyl Sulfone via Weak Carboxylate-Assisted C–H Bond Activation
A Mandal, S Dana, D Chowdhury, M Baidya*
Asian Journal Of Organic Chemistry, 7, 1302–1306 , 2018
2018
Citations: 21
Cross-Dehydrogenative Coupling/Annulation of Arene Carboxylic Acids and Alkenes in Water with Ruthenium(II) Catalyst and Air
A Mandal, B Garai, S Dana, R Bera, M Baidya*
Chemistry – An Asian Journal, 15, 4009−4013 , 2020
2020
Citations: 20
A Cross-Dehydrogenative Annulation Strategy towards Synthesis of Polyfluorinated Phenanthridinones with Copper
A Mandal, J Selvakumar, S Dana, U Mukherjee, M Baidya*
Chemistry – A European Journal, 24, 3448–3454 , 2018
2018
Citations: 20
Atom Transfer Oxidative Radical Cascade of Aryl Alkynoates towards 1,1-Dichalcogenide Olefins
H Sahoo, I Ramakrishna, A Mandal, M Baidya*
Chemistry – An Asian Journal, 14, 4549–4552 , 2019
2019
Citations: 15
Selective C–H Borylation of Polyaromatic Compounds Enabled by Metal-Arene π-Complexation
A Mandal‡, C Maurer‡, C Plett, KRK Chandramohan, R Fleischer, ...
Journal of the American Chemical Society, 147, 15281–15293 , 2025
2025
Citations: 8

ANUP MANDAL

RESEARCH, TEACHING, or OTHER INTERESTS

Scopus Publications

RECENT SCHOLAR PUBLICATIONS

MOST CITED SCHOLAR PUBLICATIONS