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Publications
41. "Merging New and Old Concepts: Tandem Oxidative Radical-Polar Crossover Ritter Amidation via Multicomponent Photo- and Electrochemical Processes"
M. Lepori, I. Dey, C. Pratley,* J. P. Barham*
Under revision...
(Invited contribution)
40. "Photoredox autocatalysis: towards a library of generally applicable reductive photocatalysts"
J. Kaur, M. J. P. Mandigma, N. Bapat, J. P. Barham*
ChemRxiv. 2024, DOI: 10.26434/chemrxiv-2024016879
39. "Photoelectrochemical Hetereodifunctionalization of Olefins: Carboamidation Using Unactivated Hydrocarbons"
S. Schmid, S. Wu, I. Dey, M. Domanski, X. Tian,* J. P. Barham*
ACS Catal. 2024, 14, 9648-9654 PDF
38. "Protodefluorinated Selectfluor Promotes Aggregative Activation of Selectfluor for Efficient C(sp3)-H Fluorination Reactions"
S. Yakubov, B. Dauth, W. Stockerl, W. M. da Silva, R. M. Gschwind,* J. P. Barham*
ChemSusChem, 2024, e202401057 PDF
37. "Electrochemical Homo- and Cross-Annulation of Alkynes and Nitriles for the Regio- and Chemoselective Synthesis of 3,6-Diarylpyridines"
M. Ghosh, T. Mandal, M. Lepori, J. P. Barham, J. Rehbein, O. Reiser*
Angew. Chem., Int. Ed. 2024, e202411930 PDF
36. "A hydrazine-free photoredox catalytic synthesis of azines by reductive activation of readily available oxime esters"
J. Schütte, D. Corsi, W. Haumer, S. Schmid, J. Zurauskas, J. P. Barham*
Green Chem. 2024, Advance Article PDF
(Selected for the Inside Front Cover of Issue 11, 2024)
35. "An affordable, programmable and interactive continuous flow Photoreactor setup for undergraduate organic synthetic teaching labs"
M. Domanski, G. Marcou,* J. P. Barham*
J. Flow Chem. 2024, DOI: 10.1007/s41981-023-00306-9 PDF
34. "Photo- and electro-chemical strategies for the activations of strong chemical bonds"
X. Tian, Y. Liu, S. Yakubov, J. Schütte, S. Chiba,* J. P. Barham*
Chem. Soc. Rev. 2024, 53, 263-316 PDF
33. "Electron-Poor Acridones and Acridiniums as Super Photooxidants in Molecular Photoelectrochemistry by Unusual Mechanisms"
J. Zurauskas, S. Bohacova, S. Wu, V. Butera, S. Schmid, M. Domanski, T. Slanina, J. P. Barham*
Angew. Chem., Int. Ed. 2023, e202307550 PDF
32. "Solvent Dependency of Catalyst-Substrate Aggregation Through π-π Stacking in Photoredox Catalysis"
L. Wylie,* J. P. Barham,* B. Kirchner
ChemPhysChem 2023, e202300470 PDF
31. "Photoredox Catalysis Harvesting Multiple Photon or Electrochemical Energies"
M. Lepori, S. Schmid, J. P. Barham,*
Beilstein J. Org. Chem. 2023, 19, 1055-1145 PDF
(Invited contribution "Thematic Issue: Artificial photosynthesis" by Prof. Andrea Pannwitz. Editor's Pick)
30. "Shining Fresh Light on Complex Photoredox Mechanisms Through Isolation of Intermediate Radical Anions"
S. Horsewill, G. Hierlmeier, Z. Farasat, J. P. Barham, D. J. Scott,*
ACS Catal. 2023, 13, 9392-9403 PDF
29. "Transient absorption spectroscopy based on an uncompressed hollow core fiber whitelight proves pre-association between a radical ion photocatalyst and substrate"
A. Kumar, P. Malecvich, L Mewes, S. Wu, J. P. Barham, J. Hauer,*
J. Phys. Chem. 2023, 158, 144201 PDF
28. "Organophotocatalytic Mechanisms: Simplicity of Naïvety? Diverting Reactive Pathways by Modifications of Catalyst Structure, Redox States, Substrate Preassemblies & Static Quenching"
M. J. P. Mandigma, J. Kaur, J. P. Barham,*
ChemCatChem 2023, 11, e202201542 PDF
(Invited contribution "Special Issue: Photocatalysis" by Prof. Oliver Wenger/Dr. Bart Pieber/Dr. Line Næsborg. Editor's Choice: Spotlights Photocatalytic Synthesis - Catalysts, Catalytic Strategies, and Mechanistic Insights)
27. "Benzoates as photosensitization catalysts and auxiliaries in efficient, practical, light-powered direct C(sp3)-H fluorinations"
S. Yakubov, W. J. Stockerl, X. Tian, A. Shahin, M. J. P. Mandigma, R. M. Gschwind, J. P. Barham,*
Chem. Sci. 2022, 13, 14041-14051 PDF
(Selected as a Outside Back Cover for issue 47, 2022)
26. "A Tunable Microwave Flow System for Scalable Synthesis of Alkyl Imidazolium-type Ionic Liquids"
M. Domanski, J. Zurauskas, J. P. Barham,*
Org. Process Res. Dev. 2022, 26, 2498-2509 PDF
(Selected as a Supplementary Cover for Issue 8, 2022)
25. "α-amino Radical Halogen Atom Transfer Agents for Metallaphotoredox Catalyzed Cross Electrophile Couplings of Distinct Organic Halides"
X. Tian, J. Kaur, S. Yakubov, J. P. Barham,*
ChemSusChem 2022, 15, e202200906 PDF
(Reader's choice article, July 2022. Selected for Wiley 'Hot Topic': C-C coupling. Selected for Wiley 'Hot Topic': Photocatalysis)
24. "Site-selective C(sp3)-H Functionalizations Mediated by Hydrogen Atom Transfer Reactions via α-amino/α-Amido Radicals"
J. Kaur, J. P. Barham,*
Synthesis 2022, 54, 1461-1477 PDF
(Invited contribution by Prof. Paul Knochel/Prof. Martin Oestreich)
23. "An Organophotocatalytic Late-stage N-CH3 Oxidation of Trialkylamines to N-formamides with O2 in Continuous Flow"
M. J. P. Mandigma, J. Zurauskas, C. I. MacGregor, L. J. Edwards, A. Shahin, L. d'Heureuse, P. Yip, D. J. S. Birch, T. Gruber, J. Heilmann, M. P. John, J. P. Barham*
Chem. Sci. 2022, 13, 1912-1924 PDF
(Selected for the Outside Back Cover for Issue 7, 2022. Selected for the Themed Collection: 'Most popular 2021 catalysis articles'. Presentation of this work by M. J. P. Mandigma was recognized by awards: FameLab Bayern '1st place'; EYCheM2022 'best talk')
22. "Synthetic Molecular Photoelectrochemistry: New Frontiers in Synthetic Applications, Mechanistic Insights and Scalability"
S. Wu, J. Kaur, T. A. Karl, X. Tian, J. P. Barham*
Angew. Chem., Int. Ed. 2021, 61, e202107811 PDF
(Selected for the Inside Front Cover for Issue 12)
21. "Catalyst-free, Scalable Heterocyclic Flow Photocyclopropanation"
V. Klöpfer, R. Eckl, J. Floß, P. M. C. Roth, O. Reiser,* J. P. Barham*
Green Chem. 2021, 23, 6366-6372 PDF
(Selected for the Outside Front Cover for Issue 17, 2021. Selected as a 2021 Green Chemistry 'HOT Article')
20. "Electro-mediated PhotoRedox Catalysis for Selective C(sp3)-O Cleavages of Phosphinated Alcohols to Carbanions"
X. Tian, T. Karl, S. Reiter, S. Yakubov, R. de Vivie-Riedle, B. König,* J. P. Barham*
Angew. Chem., Int. Ed. 2021, 60, 20817-20825 PDF
19. "Hole-Mediated PhotoRedox Catalysis: Tris(p-Substituted)biarylaminium Radical Cations as Tunable, Precomplexing and Potent Photooxidants"
S. Wu, J. Zurauskas, M. Domanski, P. Hitzfeld, V. Butera, D. J. Scott, J. Rehbein, A. Kumar, E. Thyrhaug, J. Hauer, J. P. Barham*
Org. Chem. Front. 2021, 8, 1132-1142 PDF
(Selected for the Outside Back Cover for Issue 6, 2021; ESI 'Highly Cited' paper in 2021)
18. "Photocatalyst-Free, Visible-Light-Mediated C(sp3)-H Arylation of Amides via a Solvent-Caged EDA Complex"
J. Kaur, A. Shahin, J. P. Barham*
Org. Lett. 2021, 6, 2002-2006 PDF
(Selected as a Supplementary Cover for Issue 6, 2021)
17. "Photocatalytic (Hetero)Arylation of C(sp3)-H Bonds with Carbon Nitride"
S. Das, K. Murugesan, G. J. V. Rodríguez, J. Kaur, J. P. Barham, A. Savateev, M. Antonietti, B. König,*
ACS Catal. 2021, 11, 1593-1603 PDF
(Highlighted in Synfacts by Profs. Y. Uozumi and S. Okumura. ESI 'Highly Cited' paper in 2021 & 2022)
16. "C-Alkylation of alkali metal carbanions with olefins"
M. J. P. Mandigma, M. Domanski, J. P. Barham,*
Org. Biomol. Chem. 2020, 18, 7697-7723 PDF
(Selected as the Outside Front Cover for Issue 39, 2020)
15. "Photosensitized direct C-H fluorination and trifluoromethylation in organic synthesis"
S. Yakubov, J. P. Barham,*
Beilstein J. Org. Chem. 2020, 16, 2151-2192 PDF 
14. "Base-catalyzed C-alkylation of potassium enolates with styrenes via a Metal-ene Reaction: A Mechanistic Study"
J. P. Barham,* T. Fouquet, Y. Norikane,
Org. Biomol. Chem. 2020, 18, 2063-2075 PDF
(Selected as the Outside Front Cover for Issue 11, 2020)
13. "Synthetic Photoelectrochemistry"
J. P. Barham,* B. König,
Angew. Chem., Int. Ed. 2020, 59, 11732-11747 PDF
(Invited contribution) (ESI Highly Cited paper (top 1% of its academic field) until present)
12. "High Efficiency Microwave Flow Chemistry Toward Synthesis of Functional Materials and Pharmaceutical Cores"
J. P. Barham,* E. Koyama, J. Sugiyama, Y. Norikane, H. Egami, Y. Hamashima,
AMPERE 2019, 17th International Conference on Microwave and High Frequency Heating, In Press PDF
11. "Microwave Flow: A Perspective on Reactor and Microwave Configurations and the Emergence of Tunable Single-mode Heating Towards Large-scale Applications"
J. P. Barham,* E. Koyama, Y. Norikane, N. Ohneda, T. Yoshimura,*
Chem. Rec. 2019, 19, 188-203 PDF
10. "A Continuous-Flow Resonator-Type Microwave Reactor for High-Efficiency Organic Synthesis and Claisen Rearrangement as a Model Reaction"
E. Koyama,* N. Ito, J. Sugiyama, J. P. Barham, Y. Norikane, N. Ohneda, Y. Ohno, T. Yoshimura, H. Odajima, T. Okamoto,
J. Flow Chem. 2018, 8, 147-156 PDF
9. "C-alkylation of N-alkylamides with styrenes in air and scale-up using a microwave flow reactor"
J. P. Barham,* S. Tamaoki, H. Egami, N. Ohneda, T. Okamoto, H. Odajima, Y. Hamashima,*
Org. Biomol. Chem. 2018, 16, 7568-7573 PDF
8. "Regio- and chemoselective Csp3-H arylation of benzylamines by single electron transfer/hydrogen atom transfer synergistic catalysis"
T. Ide, J. P. Barham, M. Fujita, Y. Kawato, H. Egami, Y. Hamashima,*
Chem. Sci. 2018, 9, 8453-8460 PDF
7. "Dual Roles for Potassium Hydride in Haloarene Reduction: CSNAr and SET Reduction via Organic Electron Donors Formed in Benzene"
J. P. Barham, S. E. Dalton, M. Allison, G. Nocera, A. Young, M. P. John, T. M. McGuire, S. Campos, T. Tuttle,* J. A. Murphy,*
J. Am. Chem. Soc. 2018, 140, 11510-11518 PDF
6. "Selective, Scalable Synthesis of C60-Fullerene/Indene Monoadducts Using a Microwave Flow Applicator"
J. P. Barham,* S. Tanaka, E. Koyama, N. Ohneda, T. Okamoto, H. Odajima, J. Sugiyama, Y. Norikane,*
J. Org. Chem. 2018, 83, 4348-4354 PDF
5. "Contra-thermodynamic Hydrogen Atom Abstraction in the Selective C-H Functionalization of Trialkylamine N-CH3 Groups"
J. P. Barham, M. P. John, J. A. Murphy,*
J. Am. Chem. Soc. 2016, 138, 15482-15487 PDF
(Featured in the top 20 ‘most read articles’ of JACS in 2016. Recognised by the 2017 Reaxys Ph.D. Prize)
4. "KOtBu: A Privileged Reagent for Electron Transfer Reactions?"
J. P. Barham, G. Coulthard, K. J. Emery, E. Doni, F. Cumine, G. Nocera, M. P. John, L. E. A. Berlouis, T. McGuire, T. Tuttle,* J. A. Murphy,*
J. Am. Chem. Soc. 2016, 138, 7402-7410 PDF
(Featured in the top 20 ‘most read articles’ of JACS in 2016. Features on the first page of Google Entries for ‘KOtBu’. ESI ‘Highly Cited' Paper (top 1% of its academic field) until present)
3. "Double Deprotonation of Pyridinols Generates Potent Organic Electron-Donor Initiators for Haloarene-Arene Coupling"
J. P. Barham, G. Coulthard, R. G. Kane, N. Delgado, M. P. John, John A. Murphy,*
Angew. Chem., Int. Ed. 2016, 55, 4492-4496 PDF
(Featured in the top 15 ‘most accessed articles’ of ACIE in 03.2016)
2. "Asymmetric Intramolecular Conjugate Addition Nitro-Mannich Route to cis-2-Aryl-3-nitrotetrahydroquinolines"
J. C. Anderson,* J. P. Barham, C. D. Rundell,
Org. Lett. 2015, 17, 4090-4093 PDF
1. "One-pot Functionalisation of N-Substituted Tetrahydroisoquinolines by Photooxidation and Tunable Organometallic Trapping of Iminium Intermediates"
J. P. Barham, M. P. John, J. A. Murphy,*
Beilstein J. Org. Chem. 2014, 10, 2981-2988 PDF
Book Chapters
1. "Heating Applications: Flow Chemistry"
J. P. Barham,* E. Koyama, Y. Norikane, T. Yoshimura,*
in "RF Power Semiconductor Generator Application in Heating and Energy Utilization"
Editors: S. Horikoshi, N. Serpone, 2020, pp 91-117, ISBN: 978-981-15-3546-5
Patents
2. "Title tba"
S. Yakubov, B. Deuth, W. Stockerl, R. M. Gschwind, J. P. Barham
European Patent Office (Applicant: University of Regensburg. Application Number: EP 23 205 559 0. Filing Date: 24.10.2023)
1. "Photoresponsive azo compound and polymer compound"
Y. Yue, Y. Norikane, E. Koyama, J. P. Barham
Japan Patent Office (Applicant: National Institute of Advanced Industrial Science and Technology. Institution Number: 301021533. Application Number: PCT/JP2019/010828. Filing Date: 19/02/2019)
Press Releases
2. "Low Volume, High Value"
University of Regensburg Press Release,
01/04/2023.
A personal career journey press release.
For the Press Release (English)
1. "Enabling High-efficiency Synthesis of Organic Materials with a Flow-type Microwave Synthesiser"
National Institute of Advanced Industrial Science and Technology (AIST) Press Release, 12/04/2018.
A research-based press release.
For the Summary (English)
For the Press Release (Japanese)
(Featured in newspaper: Kagaku Kogyou Nippou (Japan Chemical Daily), 13/04/2018, 1st page. Featured in Nikkei Sangyo Shimbun, 19/04/2018, 5th page)
Blogs & Webinars
3. "Hole-mediated PhotoRedox Catalysis: Triarylamine Radical Cations as Tunable, Precomplexing and Potent Photooxidants"
J. P. Barham (Organic Chemistry Frontiers Blog)
For the Blog
2. "Seven strategies for scientists fo communicate their research and create a brand"
J. P. Barham (Elsevier)
For the Webinar
For the Summary
1. "Exploring continuous flow chemistry"
J. P. Barham (Elsevier)
For the Blog
Joshua Philip Barham - 01.09.2024 21:22
