KoenigChemistry
@ChemistryKoenig
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Joined March 2019
Turns out that giving nickel the freedom of choice enables all kinds of carbon-heteroatom cross-coupling reactions in a simple, predictable, and general manner. Check out our Nature paper ( with the @AnanikovLab to learn more about the concept of AD-HoC!.
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We are hiring!.Several fully funded PhD positions in chemical photocatalysis, photoswitches, synthesis of bioactive molecules and mechanistic studies available this year at @ChemistryKoenig. Join our international team to shape your career on the bright side of chemistry!
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Light can do it: Unnatural amino acids from C-H activation (10.1021/acs.orglett.2c01822). Happy to see Florence´s first paper published in great collaboration with Kathir and Rok!
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Tired of iridium photocatalysis? Try our alternatives. Congratulations to Alessa, great job.
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Photocatalytic N–H Alkylation with Alkanes - great end of a challenging project. Congratulations to Yi-wen and friends. .DOI: 10.1021/acscatal.0c01924
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Good news! Our study on photoreactors was discussed and received quite some interest: a #topcitedarticle in its journal . Effects of Light Intensity and Reaction Temperature on Photoreactions in Commercial Photoreactors.
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We thank the Japanese Photochemistry Association for recognizing our groups achievements with the Honda-Fujishima Lectureship award! Great honor.
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New in @ScienceMagazine .Accelerated photochemical reactions at oil-water interface exploiting melting point depression .Cross-coupling in organic synthesis cannot be simpler! Just add water and switch on the light. #ScienceResearch.
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Develop new hybrid catalysts with Alessa`s overview of the existing structures, a summary of the reactions and possible future directions! @NatureSynthesis .Bifunctional organic photocatalysts for enantioselective visible-light-mediated photocatalysis.
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Our new PhD Kousik Das @KousikD52228871 published with our former member Durga @HariGroupIISc in @ChemicalScience. Nice work!.Strain-enabled radical spirocyclization cascades: rapid access to spirocyclobutyl lactones and – lactams
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The nature of RRPCO generated carbanions in photoredox catalysis: a competition between nucleophility and basicity capable of deprotonating common polar solvents. Congratulations to Sascha @GrotjahnSascha and all involved! @angew_chem .
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Utilizing the sustainable energy from light and electricity towards the consecutive P–H/C–H bond functionalizations to construct Benzophospholes applied in #OLED, #OPV & #bioimaging. Congrats to @NayanSahaChem ! @ACSCatalysis .
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We made it on the cover of Chem! Congratulations to the artists and all co-authors.
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Congrats to Tobi for his overview of current strategies!.@J_A_C_S @rtg2620 .#JACSPerspective #IonPairing #Catalysis #Stereoselecive #Light #Photochemistry #Photoredox.
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A new metallaphotoredox method to arylate tryptophan directly on resin. Congrats to José @JoseACDelgado, Ya-Ming @yaming_tian, Michela and Marcio @mwpaixao ! @J_A_C_S .Side-Selective Solid-Phase Metallaphotoredox N(in)-Arylation of Peptides .
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Visible light and a preassembled thiolate photocatalyst expand the scope of leaving groups in cross coupling to very inert bonds! Just published in Chem: Congratulations to Shun and Hua, this is a great method!
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Bismuth! Not only beautiful iridescent colors but also neat catalysis when interacting with light. Dominik and Rok´s @RNarobe screening strategy identified Bismuth LMCT for radical coupling reactions @ACSCatalysis ACS Editors' Choice! .
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What sulfur anions can do for you in photocatalysis has been summarized in Shun´s and Hua´s perspective article. There is certainly more to come with this class of photocatalysts.
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Please read our comparison of four commercially available photoreactors in six photoredox reactions! Thank you for the teamwork @AstraZeneca!.
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Tert-butylamine as a labile ligand and base enables cross-coupling reactions with various nucleophile classes. Congrats to @JonasDueker and @Sigman_Lab . Cross-Coupling Reactions with Nickel, Visible Light, and tert-Butylamine as a Bifunctional Additive
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Rok and coworkers optimized the performance of the in situ formed iodine (III) - BF3 complexes with a metal and photocatalyst-free method @ChemCommun Congratulations to the team! @RNarobe @KathiravanMuru5 .
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Congratulations to Jessi and Thilo on their publication in #Synlett! They successfully performed the dichlorination of alkenes via mild and non-toxic iron-Ligand to Metal charge transfer photocatalysis @thiemechemistry .
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This collaboration is an innovative and straight photocatalytic protocol for the synthesis of succinamic acid derivatives! Thanks to @kim_benedetti29 @mwpaixao @JOC_OL .
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Our Perspective in @JACS_Au with @Chem_Aslam to leverage electrophotocatalytic C(sp3)–H bond activation chemistry to develop sustainable strategies for functionalization reactions and complex organic molecule synthesis .
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Do you like to unravel dynamic properties of cellular signaling?.Congratulations to all involved! @angew_chem .Monitoring the Reversibility of GPCR Signaling by Combining Photochromic Ligands with Label‐free Impedance Analysis.
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BF3 complexes iodine (III) intermediates improving solubility, light absorption, and oxidation properties. This methodology gives access to reactive carbenium ions. Congratulations Rok!@ACSCatalysis .
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Facile and practical carbonyl homologation! #TM_free and #latestage_func @angew_chem .Thanks to all our readers #TopDownloadedArticle.Photo-Induced Homologation of Carbonyl Compounds for Iterative Syntheses.
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Please explore the world of photogenerated diazo compounds, enabling the facile synthesis of cyclopropanes and pyrazolines. Vincent's work makes you understand how kinetic analysis led to the isolation of the key pyrazoline intermediates @ChemCommun .
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Common photocatalysts originated from OLED research: Molecules for both applications share important similarities but differ in some aspects. Congratulations @GrotjahnSascha !.Common ground and divergence: OLED emitters as photocatalysts @ChemCommun .
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Mark your calendar: December 9th, virtual symposium on photocatalysis with a great line up of speakers.
📢 Join us @ChemPhotoChem and @EurJOC on Thursday December 9th for our first joint virtual event on Photoredox Catalysis! . Talks by @NoelGroupUvA, Jola Pospech, and @TehshikYoon. Moderated by @ChemistryKoenig. Register for free👉
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Thanks to @markpeplow to point out our article in C&EN!.Water boosts light-driven coupling chemistry via @cenmag
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For the second year in a row our research made it into #HighlyCited2022 according to #Clarivate. We thank all colleagues around the globe for reading and citing our publications!
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Vincent´s recent publication got cited by Prof. Douglass F. Taber in his Highlight column: Organocatalyzed C-C Ring Construction: The Xiang Synthesis of Isoagatholactone .Have a look!
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Carbon dioxide is the catalyst in the photochemical synthesis of highly substituted furanes! Great findings by Ya-Ming, Jack and Ritu just out in Chemical Science, 2021, DOI: 10.1039/D1SC06403G
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Interested in our latest approach to obtain cyclic enamides and cyclic enecarbamates with coupled hydrogen evolution? .Many thanks to @ritu873 @yaming_tian @saikatds24 and all published in @ACSCatalysis
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Without precipitate it works in continuous flow with high yield, and facile scalability in a commercial photoreactor! @rode_lunner @ACSCatalysis . Brønsted Acid-Facilitated Thioetherification Cross-Coupling Reactions with Nickel and Visible Light
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This is our new concept for thiol-yne-ene coupling reactions in great collaboration with @AnanikovLab : a metal-free photoredox three-component coupling of thiols with readily available alkynes and alkenes @angew_chem
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Please see our collaboration for a simple method to activate various inert carbon−heteroatom bonds. Photoinduced Radical Borylation of Robust Carbon−Heteroatom Bonds.
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A new way for photocatalytic carbanion generation: Wolff-Kishner reloaded!.Congratulations to Shun, Bei-Yi and Matea,.
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Check out our new interactive retrosynthetic review in.@EurJOC.Looking up - a photocatalytic reaction has never been so easy! Thanks to Daniel, Maciej and Anamitra!
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Yes, they can: Deazaflavins do reductive conPET photocatalysis! Congratulations to Andi and Tomas; excellent collaboration with Roger and Radek, thank you!.
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This year we had a baking workshop to share our traditions and memories. On our Christmas party we enjoyed delicious food and cookies. Thanks a lot for this amazing group! 🎄
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We would like to express our gratitude to all our colleagues throughout the world who read and reference our publications! Thank you!
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We were part of the development of azocarnil a photoswitchable analogue of the drug abecarnil: a milestone toward future phototherapeutic applications.Light-Activated Agonist-Potentiator of GABAA Receptors for Reversible Neuroinhibition in Wildtype Mice .
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Good news! The seven-step syntheses of 2 highly modular catalysts have been published @ACSPublications .Thank you for the efforts and the nice collaboration @AlessaRolka @Toste_Group .Hybrid Catalysts for Enantioselective Photo-Phosphoric Acid Catalysis
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Expanding the applications of dual HAT/cobalt photocatalysis. Daniel and coworkers have developed a method for the selective defunctionalization of benzyl alcohols to arenes via sequential dehydroformylation.@ChemPhotoChem .
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Congratulations, Shilpa. We look forward to have you with us.
Happy😃to share that our former PhD coworker Shilpa @shilpa63210 has been awarded the Prestigious Humboldt Fellowship @AvHStiftung! Congratulations Shilpa👏! She will soon join the @ChemistryKoenig, @uni_regensburg for her postdoctoral studies. All our best!.@iiscbangalore
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Check out our latest carbonyl homologation strategy suitable for iterative synthesis just accepted in @angew_chem. Congratulations to Hua, Shun, Vincent @VincentGeorge_1 and Galder!.Photo‐Induced Homologation of Carbonyl Compounds for Iterative Syntheses
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A practically simple and sustainable process out now in @ACSCatalysis .Congratulations to @KathiravanMuru5 , Karsten - now in @Sanford_Lab, @RNarobe!.Photoredox-Catalyzed Site-Selective Generation of Carbanions from C(sp3)–H Bonds in Amines
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We want to share the group`s passion for coffee. Thank you Stefan - you are not only our new Bachelor but also an excellent Barista!
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We are happy to present photoprobes of Oxytocin and Vasopressin, their photochemical and biological characterization. Congratulations to Uli in collaboration with @univienna #JMedChem .Photoswitchable Probes of Oxytocin and Vasopressin
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Chemical Photocatalysis, 2nd Ed., has been published! A big Thank You! to all authors of the book.
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Collaborative Research Center (CRC) 325 „Assembly Controlled Chemical Photocatalysis“ accepts applications for doctoral researchers. For more information follow the links in the advertisement.
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New opportunities in photocatalysis!.Excited State Anions in Organic Transformations. Superb summary by Michela and Matthias what anions and light can do for your synthesis!
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"How would you remove water from your molecule?".Our latest paper reports mild reaction conditions while exposing the high catalytic efficiency of Eosin Y. Congrats to Elina, Daniel and Martin for bringing this work to daylight @elina_taskinen @ChemEurJ .
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Our work on C(sp²)–S cross-coupling reactions.using nickel, visible light, & recyclable mpg-CN has been highlighted in Synfacts @thiemechemistry .We thank Yasuhiro Uozumi and Kaili Zhang for featuring our paper!.
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Have a look at our review @OrgChemFront presenting diverse excited state reactivities of hypervalent iodine compounds. Well done Rok @RNarobe !.Transformations based on direct excitation of hypervalent iodine(iii) reagents
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Interested in new activation modes for organic photochemical synthesis?.Congrats to Yaming @yaming_tian and all authors on this great teamwork in @angew_chem!. Enforced Electronic‐Donor‐Acceptor Complex Formation in Water for Photochemical Cross‐Coupling
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Happy to share our work with you:.A rapid one-pot process with inexpensive catalysts and air as a terminal oxidant! Congratulations to Daniel!.Tandem Synthesis of Benzylidenemalononitrile Derivatives in/on Water under Visible Light
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How AD-HoC allows sequential one-pot difunctionalizations with unconventional site-selectivity: the work of @JonasDueker and @IndrajitGhosh85 in @ACSCatalysis.Sequential One-Pot (Het)arene Thioetherification and Amination with Nickel and Visible Light
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Interested in a new potential of mesoporous graphitic carbon nitride? Congratulations to Saikat and his collaborators!.@AleksandrSavat3 #MpiciPotsdam #joshpbarham.
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Excellent news! I look forward to an exciting scientific collaboration with Dorota Gryko´s lab over the next years.
Our Prof Dorota Gryko @GroupGryko jointly with Prof. Burkhard König @ChemistryKoenig received a funding of the project "CO2CHEM – USE OF CO2 IN REDOX-NEUTRAL C-H CARBOXYLATION ON THE PHOTOCATALYTIC ROUTE" within the competition of the @NCN_PL OPUS+LAB ,
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Silicates and Mesoporous Graphitic Carbon Nitride have joined forces for photocatalysis! Well done Tobias! Great collaboration with groups Fensterbank, Ollivier (Sorbonne Université) and @AleksandrSavat3, Antonietti (MPI Potsdam).
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Thank you to all colleagues reading and citing our papers. Please keep on doing so ! 😉.#HighlyCited2021
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Happy to announce our new publication in @green_rsc (25th Anniversary Collection). Congratulations to Maksim @rode_lunner and Florence for advancing the green metrics of AD-HoC with Nickel and recyclable mpg-CN!.
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Congratulations to Jonas @JonasDueker for receiving the Dr. Alfons Paulus award for his master’s degree!
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An alternative for the synthesis of β-sulfonylation carboxylic acids and α-substituted acrylates. Get inspired by our collaboration! @kim_benedetti29 @mwpaixao @JoseACDelgado @de_zezao .
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Interested in photopharmacology?.A chemical, photophysical and biochemical characterization of a variety of PTLs designed to target the μ-opioid receptor by Ranit and Peter Gmeiner @UniFAU @ChemMedChem .
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A valuable tool for mechanistic insights: simultaneous and time-resolved NMR monitoring of pCN photocatalyzed reaction processes under visible light conditions @angew_chem .A nice collaboration with @PaoloGiusto and the Gschwind group.
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Catalytic variations of the classic Wolff Kishner protocol provide new opportunities in organic synthesis. Check it out in our new review!.
Catalytic Generation of Carbanions through Carbonyl Umpolung (Koenig) #openaccess thanks to #projektDEAL @ChemistryKoenig
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A tradition we love: pictures from our 25. Christmas colloquium including humorous presentations and the nice Glühwein supply from our Fachschaft Chemie. Thank you all!
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Interested in Cerium photocatalysis? Then read our next collaboration @BeilsteinInst @tvmiiser .
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The “cesium effect”: a perfectly balanced acid-base character fully solvated in polar aprotic organic solvents - and a catalyst:.Jessica`s article Cesium Carbonate Catalyzed Oxa-Michael Addition of Oximes to Acrylonitrile got a #TopDownloadedArticle.
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Photocatalytic Base‑Free Corey‑Seebach Reaction - another application of carbanion generation by visible light. Well done, Karsten, Kathir, Ursa and Stefano!.
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Congratulations to Michela, @stefano_crespi and Andreas on their new publication in @ChemCommun!. A dinuclear copper(II) complex with photoswitchable catechol oxidation activity
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Nice collaboration with our Brazilian colleagues. Well done Marilia!.
Just accepted by Paixão, König and coworkers @ChemistryKoenig: C(sp3)-C(sp3) Cross-#Coupling of Alkyl #Bromides and #Ethers by #Metal and Visible #Light #Photoredox Catalysis,
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Thank you for all the good wishes!.
🎁Headlights on Burkhard Koenig, turning 60 today: PhD with Armin de Meijere @unihh, postdoc with Barry M. Trost @StanfordUChem; since 1999 Prof. of #Organic #Chemistry @uni_regensburg; he merged #photocatalysis and #organicsynthesis and has been chair of the Editorial Board of
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A call for sustainable chemistry! Discover water to make photoreactions with commercial Fe(II)/Fe(III) salts by adding ligands that favour LMCT transitions!.An inspiring rewiew from Jessica! @green_rsc .
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Our paper shows short reaction times and broad functional group tolerance! Congratulations to Ritu @ritu873 and Daniel in collaboration with Prof. Nidhi Jain @iitdelhi @AdvSynthCatal .
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Shun´s minireview became a #topdownloadedarticle @angew_chem .Exciting opportunities in catalytic carbonyl Umpolung for carbanion generation still wait to be discovered!.
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Thank you #Synfacts 2021; 17(05): 0549.DOI: 10.1055/s-0040-1720465 to feature our recent work in ACS Catal. 2021, 11, 3, 1593 ( on Photocatalytic (Het)arylation of C(sp3)–H Bonds with Carbon Nitride
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New classes of chiral silane thiol HAT-reagents avoid microscopic reversibility by utilizing a photocatalytic HAT/RRCPO/protonation sequence for stereochemical editing. Congrats to all involved! @OrgChemFront .
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Our research article on the use of a durable organic semiconductor in visible light photoredox catalysis is now online. Congratulations to all.
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We present you the first example of visible light mediated Birch-Type Photoreduction.Congratulations to Anamitra!.
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Nice to see our report on photocatalytic activation of aliphatic carbon - chlorine bonds (Nature Catal. 2020, 3, 40. DOI: 10.1038/s41929-019-0369-5) featured in
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The combination of TBADT with Munavalli’s reagent: Congrats to the team!
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Congratulations to Tobi Schirmer successfully defending his PhD thesis; thanks to @TheWolfgroup, Julia Rehbein and Louis Fensterbank, who joined from Paris.
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Some of our recent papers with Wiley were among the top 10%: #TopDownloadedArticle . @ChemEurope . @angew_chem .@ChemCatChem .@AdvSynthCatal .@AdvSynthCatal.
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Great to see the nice results published!.
Pleased to share our electro-mediated photoredox⚡️💡reductive cleavage of activated R-OH to carbanions published in @angew_chem!✨🎉 Modifying super-reducing e-PRCats overturns selectivity; reduces C(sp3)-O while C(sp2)-O&ArCl/Br intact! #preassembly is🗝️!
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Environmental friendliness and carbon neutrality:.when the yielding products are higher in free energy than the reactants.#photocatalysis #sustainability .Congrats to Huaiju and Ya-Ming @yaming_tian for their review in @NatRevChem .
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I enjoyed the lively discussions during my virtual visit of the BioLEC center very much. Thank you! It was a pleasure!.
Thank you Burkhard Konig, Universitat Regensburg, for presenting today on challenges in chemical photocatalysis: harvesting more energy for transformations, expanding the scope of reactive intermediates, and finding a more universal photocatalyst. #PrincetonU #catalysis #STEM
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Congratulations to Dave and his team for adding a new application to acridinium photocatalysis! Excellent! Really nice to see how the use of two photons in the same catalytic cycle (ConPET) allows the reduction of challenging chemical bonds!.
Congrats Nick, Susanna and Roukaya for their work on Ketone–Olefin Coupling of Aliphatic and Aromatic Carbonyls Catalyzed by Excited-State Acridine Radicals! Check it out:.
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On our recent paper, a truly enjoyable and very creative comment by Derek @Dereklowe.Adaptive Catalysts for Coupling Reactions | Science | AAAS
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@ChemCommun celebrates its 60th anniversary🎉! They collected the 60 most popular articles published in 2023. We are very pleased that Vincent´s article is part of it!.
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Please apply for a great project opportunity!.
Postdoc Vacancy under the IGP project. The funding is under the IGP Project- Chemical Innovations For a Sustainable Future funded by UGC, Govt. Of India https://www.iiti.ac.in/recruitments/post-doctoral-fellow-positions
@IITIOfficial @ChemistryKoenig @ugc_india
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