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Abstract IUPAC defines a "mechano-chemical reaction" as a "chemical reaction that is induced by the direct absorption of mechanical energy". 1 We investigated a wide range of organic reactions and found that ball milling can affect the oxidation states of …
17:35 to 18:20
Event
Abstract Electron transfer-mediated functionalizations present new avenues for the construction of carbon-carbon and carbon-heteroatom bonds from readily available and abundant feedstocks. We have been developing new photocatalytic systems as versatile …
16:50 to 17:35
Event
Abstract Visible-light photoredox catalysis provides powerful opportunities for redox transformations under mild conditions;1 however, the development of efficient, low-cost, and metal-free photocatalysts remains a central challenge.1b In this talk, I …
15:45 to 16:30
David J. Procter
From Sulfonium Salts to Samarium Catalysis: New radical chemistry for synthesis
David J. Procter
From Sulfonium Salts to Samarium Catalysis: New radical chemistry for synthesis
Symposium
Event
Abstract Part I - Our approach to cross-coupling uses sulfoxides to activate substrates as sulfonium salts. In particular, sulfonium salts, generated from arenes, 1 and new sulfonium salts generated from alternative feedstocks, 2 can be exploited in …
15:00 to 15:45
Véronique Michelet
A Journey in Gold Catalysis Towards Diversity: from Heterocycles to Fragrances
Véronique Michelet
A Journey in Gold Catalysis Towards Diversity: from Heterocycles to Fragrances
Symposium
Event
Abstract Over the past 20 years, significant research has been directed toward the development of new methodologies for synthetic efficiency and atom economy processes in the presence of gold complexes. 1 We have been initially engaged in a wide project …
14:15 to 15:00
Event
Abstract Activation of small molecules by donor-acceptor systems is conceptually important as many catalytic processes rely on the synergistic action of electron-rich and -poor sites to cooperatively activate and cleave bonds. This pertains to both the …
11:45 to 12:30
Event
Abstract Polyoxometalates (POMs) form a versatile family of molecular oxide clusters of the early transition metals endowed with exceptional redox properties, which have driven applications in photo/electro-catalysis, photo/electro-chromic materials, …
11:00 to 11:45
Event
Abstract Activation of carbene precursors by planar, low-spin cobalt(II) complexes leads to formation of 'carbene radical' intermediates. 1 These are intrinsically reactive metal-bound carbon radicals (Figure 1), useful for catalytic synthesis of a …
09:50 to 10:35
Event
Abstract Electrochemical reduction of carbon dioxide can yield valuable chemicals, energy carriers, and renewable fuels that serve as storage forms of renewable energy. This transformation can be achieved using molecular catalysts immobilized on …
09:05 to 09:50
Event
Session 4: Continental Drift and Paleoclimates Chair: Edouard Bard (Collège de France & CEREGE) …
17:10 to 17:50
Event
Session 4: Continental Drift and Paleoclimates Chair: Edouard Bard (Collège de France & CEREGE) …
16:30 to 17:10
Event
Abstract Arab petitions have been studied as a distinct genre, combining diplomatic elements (formulas, layout, medium, writing) and a moral framework ("circle of justice"). Yet letters of request on papyrus show that polite petitions, even outside the …
15:00 to 16:00
Event
Session 4: Continental Drift and Paleoclimates Chair: Edouard Bard (Collège de France & CEREGE) …
15:20 to 16:00
Event
Session 4: Continental Drift and Paleoclimates Chair: Edouard Bard (Collège de France & CEREGE) …
14:40 to 15:20
Event
Session 4: Continental Drift and Paleoclimates Chair: Edouard Bard (Collège de France & CEREGE) …
14:00 to 14:40
Event
Session 3: Lithosphere and Earthquakes Chair: Laurent Jolivet (Sorbonne University, Paris) …
11:40 to 12:20
Event
Session 3: Lithosphere and Earthquakes Chair: Laurent Jolivet (Sorbonne Université, Paris) …
11:00 to 11:40
Event
Session 3: Lithosphere and Earthquakes Chair: Laurent Jolivet (Sorbonne Université, Paris) …
09:50 to 10:30
Serge Lallemand
Lessons and Open Questions from the Analysis of 125 Years of Subduction Megaquakes
Serge Lallemand
Lessons and Open Questions from the Analysis of 125 Years of Subduction Megaquakes
Symposium
Event
Session 3: Lithosphere and Earthquakes Chair: Laurent Jolivet (Sorbonne Université, Paris) …
09:10 to 09:50
Claudine Cohen
Jacques Boucher de Perthes (1788 - 1868) : science and imagination at the origins of prehistory
Claudine Cohen
Jacques Boucher de Perthes (1788 - 1868) : science and imagination at the origins of prehistory
Special events
Event
Abstract This lecture evokes the birth of the prehistoric sciences in the middle of the XIX th century, centered on the colorful figure of Jacques Boucher de Perthes : amateur archaeologist and prolific author, an inventive mind with a vivid imagination, …
18:00 to 19:00
Event
Session 2: Global Geodynamics of the Earth Chair: Barbara Romanowicz (Collège de France, UC Berkeley & IPG Paris) …
17:10 to 17:50
Isabelle Panet
Mass Structure of the Convecting Mantle: Constraints Using Satellite Gravity Data
Isabelle Panet
Mass Structure of the Convecting Mantle: Constraints Using Satellite Gravity Data
Symposium
Event
Session 2: Global Geodynamics of the Earth Chair: Barbara Romanowicz (Collège de France, UC Berkeley & IPG Paris) …
16:30 to 17:10
Event
Session 2: Global Geodynamics of the Earth Chair: Barbara Romanowicz (Collège de France, UC Berkeley & IPG Paris) …
15:20 to 16:00