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# Paul Walden Symposium

2027 | Riga, Latvia

## Sitemaps

- [XML Sitemap](https://walden.osi.lv/sitemap.xml): Contains all public & indexable URLs for this website.

## Posts

- [Introduction](https://walden.osi.lv/introduction/) - Paul Walden was a Latvian and his first scientific results were obtained in Riga under the supervision of Nobel prize winner Professor Wilhelm Ostwald. In 1896 he discovered his famous rule, later called the "Walden inversion". 150th anniversary of the birth of Paul Walden is included in the UNESCO Celebrations Day Calendar for Year 2013.

## Pages

- [](https://walden.osi.lv/) - The next Paul Walden Symposium will be held on September 16-17, 2027Riga, Latvia 15th paul walden symposium Paul Walden was a Latvian and his first scientific results were obtained in Riga under the supervision of a Nobel prize winner Professor Wilhelm Ostwald. In 1896 he discovered his famous rule, later called the “Walden inversion”. To
- [15th Paul Walden Symposium, September 16-17, 2027](https://walden.osi.lv/15th-paul-walden-symposium/) - The symposium will be held in Riga in September 2026.
- [15th Paul Walden Symposium Plenary Speakers](https://walden.osi.lv/15th-paul-walden-symposium/15th-paul-walden-symposium-plenary-speakers/) - The symposium will be held in Riga on September 25-26, 2025.
- [14th Paul Walden Symposium Pictures](https://walden.osi.lv/14th-paul-walden-symposium/14th-paul-walden-symposium-pictures/) - Photo by Inese Kalniņa
- [14th Paul Walden Symposium](https://walden.osi.lv/14th-paul-walden-symposium/) - The symposium will be held in Riga on September 25-26, 2025.
- [14th Paul Walden Symposium Awards](https://walden.osi.lv/14th-paul-walden-symposium/14th-paul-walden-symposium-awards/) - Professor Eric Rozner of Binghamton University was awarded the Paul Walden Medal at the symposium's opening for his impact on nucleic acid chemistry and his role in advancing science in Latvia. The medal, a traditional honor bestowed by the symposium's organizers, was presented by Professor Māris Turks, Dean of the Faculty of Natural Sciences and
- [14th Paul Walden Symposium Program](https://walden.osi.lv/14th-paul-walden-symposium/14th-paul-walden-symposium-program/) - Thursday, September 25th, 2025 Friday, September 26th, 2025
- [14th Paul Walden Symposium Plenary Speakers](https://walden.osi.lv/14th-paul-walden-symposium/14th-paul-walden-symposium-plenary-speakers/) - The symposium will be held in Riga on September 25-26, 2025.
- [13th Paul Walden Symposium Program](https://walden.osi.lv/13th-paul-walden-symposium/program/) - Thursday, September 14th, 2023 Friday, September 15th, 2023 The poster prizes for the best posters provides
- [13th Paul Walden Symposium](https://walden.osi.lv/13th-paul-walden-symposium/) - The symposium took place on September 14-15, 2023 in the centre of Riga. Speakers Program pictures Awards Abstract Book The 13th Paul Walden Symposium was supported by the European Regional Development Fund “Support for international cooperation projects in research and innovation in Latvian Institute of Organic Synthesis”, contract No. 1.1.1.5/18/I/007
- [13th Paul Walden Symposium Pictures](https://walden.osi.lv/13th-paul-walden-symposium/13th-paul-walden-symposium-pictures/)
- [13th Paul Walden Symposium Awards](https://walden.osi.lv/13th-paul-walden-symposium/13th-paul-walden-symposium-awards/) - In 2023 the Paul Walden medals were awarded to: Professor Olafs Daugulis (University of Houston, USA) for his pivotal contributions to the development of transition metal catalysis methodologies and the education of Latvian chemists Professor Jānis Ločs (RTU) for the development of biomaterial and substantial contributions to the development of material science research infrastructure and
- [13th Paul Walden Symposium Plenary Speakers](https://walden.osi.lv/13th-paul-walden-symposium/13th-paul-walden-symposium-plenary-speakers/) - Prof. Lutz Ackermann (Georg-August-University Göttingen, Germany)Metallaelectro-Catalyzed Bond Activation Prof. Nicolai Cramer (EPFL, Switzerland) From [ ] to L* Prof. Olafs Daugulis (University of Houston, USA)New Methods for Carbon-Hydrogen Bond Functionalization Prof. Paolo Melchiorre (University of Bologna, Italy and Institute of Chemical Research of Catalonia, Spain)Photochemistry & Organocatalysis: New Radical Opportunities Prof. Rebecca Melen (University of
- [Poster Pitch sessions](https://walden.osi.lv/poster-pitch-sessions/) - Presentation order 12:30 Vladislavs Baškevičs Rūdolfs Beļaunieks Aleksejs Burcevs Aleksandrs Čižikovs Madara Dārziņa Armands Kazia 15:30 Anastasiya Krech Rasma Kroņkalne Vladislavs Kroškins Marharyta Laktsevich-Iskryk Kristaps Leškovskis Artūrs Mazarevičs 16:15 Danylo Merzhyievsky Annette Miller Tatsiana Nikonovich Reinis Putralis Georgijs Stakanovs
- [Posters](https://walden.osi.lv/posters/) - Poster Pitch sessions Presentation order 12:30 Vladislavs Baškevičs Rūdolfs Beļaunieks Aleksejs Burcevs Aleksandrs Čižikovs Madara Dārziņa Armands Kazia 15:30 Anastasiya Krech Rasma Kroņkalne Vladislavs Kroškins Marharyta Laktsevich-Iskryk Kristaps Leškovskis Artūrs Mazarevičs 16:15 Danylo Merzhyievsky Annette Miller Tatsiana Nikonovich Reinis Putralis Georgijs Stakanovs The abstract book is available here All PhD students are invited to prepare
- [General Information](https://walden.osi.lv/general-information/) - Participation in the conference is free of charge for every registered participant. The symposium format will be plenary lectures and student poster presentations. Venue The conference will take place in the Radisson Blu Latvija Conference & Spa Hotel. Address: Elizabetes iela 55, Rīga. Key dates Registration is open until September 1st 2023 and it is
- [Welcome](https://walden.osi.lv/home-and-welcome-2/) - With great pleasure, we invite you to the 13th Paul Walden Symposium on Organic chemistry (Walden 2023) which will be held on September 14th-15th, 2023in Riga, Latvia. The symposium will be hosted by the Latvian Institute of Organic Synthesis. The programme and format of Walden 2023 are composed of plenary lectures by distinguished international speakers
- [10th Paul Walden Symposium Pictures](https://walden.osi.lv/10th-walden-symposium/10th-paul-walden-symposium-pictures/) - Photo: Riga Technical University
- [10th Walden Symposium](https://walden.osi.lv/10th-walden-symposium/) - The 10th Paul Walden Symposium was held on June 15-16, 2017. Speakers program Awards Pictures
- [12th Paul Walden Symposium Awards](https://walden.osi.lv/12th-walden-symposium/12th-paul-walden-symposium-awards/) - In 2021 the Paul Walden medals were awarded to: Dr. chem. Pavel Arsenyan (Latvian Institute of Organic Synthesis) for research in selenium chemistryProfessor Māra Jure (Riga Technical University, Latvia)Professor Māris Knite (Riga Technical University, Latvia) The poster prizes from the chemical equipment company Armgate received students from the Latvian Institute of Organic Synthesis: Ph.D. students
- [11th Paul Walden Symposium Awards](https://walden.osi.lv/11th-walden-symposium/awards/) - In 2019 the Paul Walden medals were awarded to: Professor Aigars Jirgensons (Latvian Institute of Organic Synthesis) for research in the field of organic methodologyProfessor Gisela Boeck (Institut für Chemie Universität Rostock, Germany) The poster prizes for the best posters by the chemical reagent company "Bapeks" were awarded to: Ph.D. students Sindija Lapčinska and Viktorija
- [5th Paul Walden Symposium Awards](https://walden.osi.lv/5th-walden-symposium/5th-paul-walden-symposium-awards/) - In 2007 the Paul Walden medals were awarded to: Professor Edvards Liepiņš (Latvian Institute of Organic Synthesis, Riga, Latvia)Professor Valdis Kampars (Riga Technical University, Latvia)Professor Kurt Wüthrich (Switzerland, ETH Zürich) The poster prizes received: PhD students Elīna Erdmane and Maksims Vaņejevs M. Sc. students Zanda Bluķe and Ingūna GobaB.Sc. students Jekaterina Hermane and Māris Viļums
- [7th Walden Symposium](https://walden.osi.lv/7th-walden-symposium/) - 7th Walden Symposium Bildes skatīt šeit: RTU mājaslapa in Latvian (pēc ): 2011. gada 12. un 13. septembrī RTU, Latvijas Organiskās sintēzes institūts (LOSI) un Latvijas Universitāte (LU) rīko Paula Valdena 7. simpoziju organiskajā ķīmijā. Simpoziju atklāja RTU rektors akadēmiķis Leonīds Ribickis. Pēc tam ar priekšlasījumiem uzstājās pasaulē atzīti organiskās ķīmijas eksperti no Latvijas, ASV,
- [2nd Paul Walden Symposium Awards](https://walden.osi.lv/2nd-walden-symposium/2nd-paul-walden-symposium-awards/) - In 2001 the Paul Walden medals were awarded to: Professor Emīlija Gudriniece (Riga Technical University, Latvia)Professor Edmunds Lukevics (Latvian Institute of Organic Synthesis, Riga, Latvia)Professor Ojārs Neilands (Riga Technical University, Latvia) The poster prizes from the public joint stock company Grindeks received: PhD student Olga Tšubrik (Tartu, Estonia)master student Edita Valaityte (Kaunas, Lithuania) bachelor student
- [10th Paul Walden Symposium Awards](https://walden.osi.lv/10th-walden-symposium/10th-paul-walden-symposium-awards/) - In 2017 the Paul Walden medals were awarded to Dr. chem. Uldis Alksnis (Chemistry History Museum of Latvia)Professor Ērika Bizdēna (Riga Technical University, Latvia)Professor Mārtiņš Kalniņš (Riga Technical University, Latvia)Professor Valdis Kokars (Riga Technical University, Latvia)
- [10th Paul Walden Symposium Program](https://walden.osi.lv/10th-walden-symposium/10th-paul-walden-symposium-program/) - June 15, 2017 June 16, 2017
- [10th Paul Walden Symposium Plenary Speakers](https://walden.osi.lv/10th-walden-symposium/10th-paul-walden-symposium-plenary-speakers/) - Prof. Ērika Bizdēna (Riga Technical University; Riga, Latvia)Purine functionalization via their diazido and bis-triazolyl derivatives Prof. Olafs Daugulis (University of Houston; Houston, USA)New methods for carbon-hydrogen bond functionalization Dr.chem. Jānis Jaunzems (Solvay Special Chemicals GmbH; Hannover, Germany)Industrial fuorinations & organic fluorinated intermediates Prof. Valdis Kokars (Riga Technical University; Riga, Latvia)Donor-acceptor type low molecular organic glasses and phosphorescent dyes applied for solution-processed photonic materials Dr.chem. Vilnis Liepiņš (Olainfarm;
- [11th Paul Walden Symposium Program](https://walden.osi.lv/11th-walden-symposium/11th-paul-walden-symposium-programme/) - September 19, 2019 September 20, 2019
- [12th Paul Walden Symposium Program](https://walden.osi.lv/12th-walden-symposium/12th-paul-walden-symposium-programme/) - October 28, 2021 October 29, 2021
- [9th Paul Walden Symposium Program](https://walden.osi.lv/9th-walden-symposium/9th-paul-walden-symposium-program/) - May 21, 2015 May 22, 2015
- [9th Walden Symposium](https://walden.osi.lv/9th-walden-symposium/) - The 9th Paul Walden Symposium was held on May 21-22, 2015. Speakers program Symposium was hosted by the Latvian Institute of Organic Synthesis and Riga Technical University It took place at the Latvian Institute of Organic Synthesis (Aizkraukles iela 21, Riga, Latvia).
- [9th Paul Walden Symposium Plenary Speakers](https://walden.osi.lv/9th-walden-symposium/9th-paul-walden-symposium-plenary-speakers/) - Prof. Alan Armstrong (Imperial College London; London, UK)Enamine catalysis: synthetic applications and mechanistic insights Prof. Timothy J. Donohoe (University of Oxford; Oxford,UK)Metal catalysed reactions: New reactions and new opportunities for organic synthesis Prof. László Kürti (University of Texas; Dallas, USA)Exploiting versatile N-N and N-O bonds: rapid synthesis of functionalized biaryls and N-heterocycles Prof. Ilan Marek(Technion-Israel Institute of Technology; Haifa, Israel)Synthesis and reactivity of acyclic trisubstituted
- [8th Walden Symposium](https://walden.osi.lv/8th-walden-symposium/) - The 8th Walden Symposium was held on May 13-14, 2013 and it was dedicated to the 150th birth anniversary of Paul Walden. Speakers program awards Latvijas Pasts issued a new postage stamp and a cover to mark the 150th birthday of Paul Walden - one of the world's most outstanding scientist of Latvian origin. The
- [8th Paul Walden Symposium Program](https://walden.osi.lv/8th-walden-symposium/8th-paul-walden-symposium-program/) - May 13, 2013 May 14, 2013 10.00 - 17.00 First day cover of postage stamp devoted to Paul Walden 150th birth anniversary (room 271)
- [8th Paul Walden Symposium Plenary Speakers](https://walden.osi.lv/8th-walden-symposium/8th-paul-walden-symposium-plenary-speakers/) - Prof. Varinder K. Aggarwal (University of Bristol, Bristol, UK)Boron mediated asymmetric synthesis Prof. Manuel Alcarazo (Max-Planck-Institut für Kohlenforschung, Mülheim an der Ruhr; Germany)Extremely p-Acceptor Ligands: Applications in Pt and Au Catalysis Prof. Pher Andersson (Uppsala University, Uppsala; Sweden)Turning Dihydrogen into a Highly Versatile Reagent in Enantioselective Synthesis Prof. Erick M. Carreira (ETH, Zürich; Switzerland)Discovery and
- [8th Paul Walden Symposium Awards](https://walden.osi.lv/8th-walden-symposium/8th-paul-walden-symposium-awards/) - In 2013 the Paul Walden medals were awarded to three distinguished researchers: Dr.biol. Juris Briedis (Riga Technical University, Latvia)Professor Gundars Mežinskis (Riga Technical University, Latvia)Professor Edgars Sūna (Latvian Institute of Organic Synthesis, Riga, Latvia)
- [6th Paul Walden Symposium Awards](https://walden.osi.lv/6th-walden-symposium/6th-paul-walden-symposium-awards/) - The poster prizes received: PhD students Jevgeņija Mackeviča and Vitālijs Rjabovs M.Sc. students Edgars Paegle and Maksims Jevgļevskis B.Sc. students Imants Kreituss and Kristīne Kļimoviča
- [6th Paul Walden Symposium Plenary Speakers](https://walden.osi.lv/6th-walden-symposium/6th-paul-walden-symposium-plenary-speakers/) - Prof. Maurice Brookhart (University of North Carolina, Chapel Hill, USA) "Alkane Metathesis Using a Dual Catalyst System" Prof. Eugenijus Butkus (Vilnius University, Vilnius, Lithuania) "Crystal networks and supramolecules based on C2-symmetric bicyclo[3.3.1]nonane synthons" Prof. Olafs Daugulis (University of Houston, Houston, USA) "Palladium and Copper-Catalyzed Arylation of C-H Bonds" Prof. Marc Gingras (Mediterranean University, Marseille, France)
- [6th Walden Symposium](https://walden.osi.lv/6th-walden-symposium/) - The 6th Paul Walden Symposium was held on October 5-6, 2009. Speakers program awards Organized by Latvian Institute of Organic Synthesis, Latvian Academy of Science together with both faculties of chemistry at Latvian University and Riga Technical University. Sponsors: companies "Syntagon", "Biosan", "BAPEKS" and Latvian Scientific Council
- [3rd Paul Walden Symposium Awards](https://walden.osi.lv/3rd-walden-symposium/3rd-paul-walden-symposium-awards/) - In 2003 the Paul Walden medal was awarded to professor Ivars Kalviņš (Latvian Institute of Organic Synthesis, Riga, Latvia). The poster prizes received: Ph.D. students Olga Tšubrik (Tartu) and Ilga Mutule (Riga)M.Sc. students Natalija Usacova (Riga) and Dmitry Shabashov (Riga)B.Sc. students Andrejs Pelss (Riga) and Kristaps Mekss (Riga)
- [5th Paul Walden Symposium Plenary Speakers](https://walden.osi.lv/5th-walden-symposium/5th-paul-walden-symposium-plenary-speakers/) - Professor Alexandre Alexakis (University Geneve, Geneve, Switzerland) "Recent developments in asymmetric organocopper chemistry" Professor Jan-Erling Bäckvall (Stockholm University, Stockholm, Sweden) "Extending the scope of asymmetric transformations in combined enzyme and metal catalysis" Professor Irina Beletskaya (Moscow University, Moscow, Russia) "Transition metal catalyzed reactions of carbon-carbon and carbon-heteroatom bond formation" Professor Yuri Belokon (Nesmeyanov Institute of
- [4th Paul Walden Symposium Program](https://walden.osi.lv/4th-walden-symposium/4th-paul-walden-symposium-program/) - September 15, 2005 September 16, 2005
- [4th Paul Walden Symposium Plenary Speakers](https://walden.osi.lv/4th-walden-symposium/4th-paul-walden-symposium-plenary-speakers/) - Professor Matthias Beller (Leibnitz Institute of Organic Catalysis, Rostock, Germany) "Homogeneous Catalysis: From mechanistic concepts to industrial applications" Professor Vladimir Gevorgyan (University of Illinois at Chicago, Chicago, USA) "Novel Transition Metal-Catalyzed Protocols Toward Heterocycles" Dr. Arthur Gomtsyan (Abbott Laboratories Inc., Abbott Park, USA) "Vanilloid receptor antagonists for pain: Chirality matters" Professor Ivars Kalviņš (Latvian Institute
- [4th Paul Walden Symposium Awards](https://walden.osi.lv/4th-walden-symposium/4th-paul-walden-symposium-awards/) - The poster prizes received : PhD student Ieva Jaunzeme (Riga Technical University, Latvia)Master students Laura Černova and Tatjana Kukosha (Riga Technical University, Latvia)bachelor student Aleksandrs Prokofjevs (University of Latvia)
- [5th Walden Symposium](https://walden.osi.lv/5th-walden-symposium/) - The 5th Walden Symposium was held on September 17-18, 2007. Speakers program awards Sponsors: pharmaceutical manufacturers "Grindeks" (general), "Olainfarm" and company "Biosan".
- [4th Walden Symposium](https://walden.osi.lv/4th-walden-symposium/) - The 4th Walden Symposium was held on September 15-16, 2005. Speakers program awards Sponsors: pharmaceutical manufacturers "Grindeks" (general) and "Olainfarm".
- [3rd Walden Symposium](https://walden.osi.lv/3rd-walden-symposium/) - The 3rd Walden Symposium was held on October 13-14, 2003 and was dedicated to Paul Walden 140th Birthday. Speakers Program Awards Sponsors: pharmaceutical manufacturers "Grindeks" (general) and "Olainfarm".
- [2nd Paul Walden Symposium Program](https://walden.osi.lv/2nd-walden-symposium/2nd-paul-walden-symposium-program/) - October 1, 2001 October 2, 2001
- [2nd Walden Symposium](https://walden.osi.lv/2nd-walden-symposium/) - The 2nd Walden Symposium was held on October 1-2, 2001 and was dedicated to Riga 800th Anniversary. Speakers Program Awards General Sponsor: pharmaceutical manufacturer "Grindeks".
- [1st Walden Symposium](https://walden.osi.lv/1st-walden-symposium/) - The 1st Walden Symposium was held in Riga on April 20, 1998, at former Paul Walden auditorium (Kronvalda bulvāris 4, Riga, Latvia) and was devoted to the 90th anniversary of the Riga Chemical Society. The general sponsor: pharmaceutical manufacturer “Grindeks”.
- [1st Paul Walden Symposium Program](https://walden.osi.lv/1st-walden-symposium/1st-paul-walden-symposium-program/) - 9 a.m. April 20, 1998 Riga, Latvia
- [11th Walden Symposium](https://walden.osi.lv/11th-walden-symposium/) - Symposium took place on September 19-20, 2019 in the centre of Riga. speakers Program pictures Awards The 11th Paul Walden Symposium was supported by the European Regional Development Fund “Support for international cooperation projects in research and innovation in Latvian Institute of Organic Synthesis”, contract No. 1.1.1.5/18/I/007
- [12th Walden Symposium](https://walden.osi.lv/12th-walden-symposium/) - Symposium took place on October 28-29, 2021. Due to COVID-19 restrictions, the conference was held virtually, but despite that, all the established traditions of the Walden Symposium – plenary lectures by distinguished speakers and a poster session by the students, were maintained. speakers Program AbsTRACT BOOK pictures Awards The 12th Paul Walden Symposium was supported
- [3rd Paul Walden Symposium Plenary Speakers](https://walden.osi.lv/3rd-walden-symposium/3rd-paul-walden-symposium-plenary-speakers/) - Professor Matthias Beller (Universität Rostock, Rostock, Germany) "Catalytic multicomponent coupling reactions: from catalysis to organic synthesis and back" Professor Andre B. Charette (University of Montreal, Montreal, Canada) "New methods for the stereoselective synthesis of organic compounds" Professor Marc Gingras (University of Nice-Sophia Antipolis, Nice, France) "Synthetic innovations in sulfur chemistry - toward new materials" Professor
- [2nd Paul Walden Symposium Plenary Speakers](https://walden.osi.lv/2nd-walden-symposium/2nd-paul-walden-symposium-plenary-speakers/) - Professor Mikael Bols (Aarhus, Denmark) "Stereoelectronic substituent effects on the basicity and conformation of amines and on the reactivity of carbohydrates” Professor Reinhard Brückner (Freiburg, Germany) "Enantioselective synthesis of 5-membered ring lactones and applications thereof in synthesis" Professor Emīlija Gudriniece (Riga, Latvia) "1,3-Indandione in organic synthesis" Professor Ojārs Neilands (Riga, Latvia) "Aryliodonium betaines of b-dicarbonyl
- [1st Paul Walden Symposium Award](https://walden.osi.lv/1st-walden-symposium/1st-paul-walden-symposium-award/) - In 1997 Paul Walden medal was awarded to professor Edvīns Vedējs (Madison, USA).
- [1st Paul Walden Symposium Plenary Speakers](https://walden.osi.lv/1st-walden-symposium/1st-paul-walden-symposium-plenary-speakers/) - Professor Remir G. Kostyanovsky (Moscow, Russia)“Six impossible things in stereochemistry” Professor Peter Somfai (Lund, Sweden) “Synthesis and rearrangements of strained heterocycles as a novel entry to biologically interesting structures” Professor Jānis Stradiņš (Riga, Latvia)“Paul Walden - an outstanding Latvian chemist in Riga” Professor David Tanner (Copenhagen, Denmark) “Asymmetric synthesis and catalysis via chiral aziridines” Professor Ivar
- [12th Paul Walden Symposium Pictures](https://walden.osi.lv/12th-walden-symposium/12th-paul-walden-symposium-pictures/)
- [12th Paul Walden Symposium Plenary Speakers](https://walden.osi.lv/12th-walden-symposium/speakers-and-titles-of-lectures/) - Dr. chem. Pavel Arsenyan (Latvian Institute of Organic Synthesis)“Selenium in medicinal and material chemistry: a blessing and a curse” Professor Robert Francke (University of Rostock, Rostock, Germany)“The Synergistic Interplay between Catalysis and Electrosynthesis” Professor Veronique Gouverneur (University of Oxford, Oxford, U.K.)“Late Stage Fluorination with Metal Alkali Fluoride” Professor Paul Knochel (Ludwig-Maximilians-Universität, Munich, Germany)“Stereoselective reactions of
- [11th Paul Walden Symposium Pictures](https://walden.osi.lv/11th-walden-symposium/photos/) - Poster Prize Winners (Poster prizes were provided by Bapex, Ltd.)
- [12th Paul Walden Symposium Plenary Speakers](https://walden.osi.lv/12th-walden-symposium/12th-paul-walden-symposium-plenary-speakers/) - Dr. chem. Pavel Arsenyan (Latvian Institute of Organic Synthesis)“Selenium in medicinal and material chemistry: a blessing and a curse” Professor Robert Francke (University of Rostock, Rostock, Germany)“The Synergistic Interplay between Catalysis and Electrosynthesis” Professor Veronique Gouverneur (University of Oxford, Oxford, U.K.)“Late Stage Fluorination with Metal Alkali Fluoride” Professor Paul Knochel (Ludwig-Maximilians-Universität, Munich, Germany)“Stereoselective reactions of
- [Home and welcome](https://walden.osi.lv/home-and-welcome/) - With great pleasure, we invite you to the 12th Paul Walden Symposium on Organic chemistry (Walden 2021). The symposium will be hosted by the Latvian Institute of Organic Synthesis and the Riga Technical University. The programme and format of Walden 2021 are composed of plenary lectures by distinguished international speakers and poster sessions by the
- [Program overview](https://walden.osi.lv/program-overview/) - NOTE! The times are in the Latvian time zone (EEST) October 28, 2021 October 29, 2021
- [Posters](https://walden.osi.lv/posters-2/) - We accept only student (BSc, MSc and PhD grade) posters. Presenting a poster provides students with the opportunity to engage with other attendees, share their research, and to train presentation skills. Abstract submission Participants wishing to present their posters should submit their abstract by October 22, 2021. Please download the abstract template and follow the
- [11th Paul Walden Symposium Plenary Speakers](https://walden.osi.lv/11th-walden-symposium/plenary-speakers/) - Jeffrey W. Bode (Laboratorium für Organische Chemie ETH Zurich, Switzerland). Platform technologies for organic synthesis. P. Andrew Evans (Queen’s University, Kingston, Canada). Stereoselective construction of challenging C-C bonds: total synthesis of complex bioactive agents. Aigars Jirgensons (Latvian Institute of Organic Synthesis).Carbocation chemistry: a rich source of new synthetic methods Burkhard König (Institut für Organische Chemie,
- [Location](https://walden.osi.lv/general-information/location/) - Venue will be announced soon.
- [Key dates](https://walden.osi.lv/general-information/key-dates/) - Abstract Submission Deadline October 15, 2021 Registration Deadline October 15, 2021 Conference Dates October 28-29, 2021, 2021
- [Contacts](https://walden.osi.lv/general-information/contact-new/) - Organizing Committee Chairman Prof. Edgars Sūna Latvian Institute of Organic Synthesis e-mail: edgars@osi.lv Deputy Chairman Dr. Peteris Trapencieris Latvian Institute of Organic Synthesis Phone: +371 29158550; +371 67014936 e-mail: peteris@osi.lv
- [Accommodation](https://walden.osi.lv/general-information/accomodations/) - Foreign students may reserve RTU student dormatories. Please contact Dr. Inese Mierina (e-mail: Inese.Mierina@rtu.lv)

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