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PRODID:https://murmitoyen.com/events/vanille/udem/
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DTSTAMP:20260417T190323
DTSTART:20111123T113000
SEQUENCE:0
TRANSP:OPAQUE
DTEND:20111123T130000
URL:https://murmitoyen.com/events/vanille/udem/detail/72140
LOCATION:Université de Montréal - Pavillon Roger-Gaudry\, 2900\, chemin d
 e la Tour\, Montréal\, QC\, Canada\, H3T 1J6
SUMMARY:Conférence du professeur Mark Taylor (Toronto)
DESCRIPTION:Titre : Noncovalent and Reversible Covalent Interactions: Funda
 mental Studies and Applications in Catalysis.La conférence sera prononcé
 e par le professeur Mark Taylor du département de chimie de l'Universit
 y of Toronto. Elle sera donnée en anglais.Résumé : Our group’s resea
 rch is aimed at developing new applications of molecular recognition pheno
 mena. Our program encompasses physical-organic studies of poorly understoo
 d noncovalent interactions\, the discovery of stimulus-responsive molecule
 s and materials\, catalyst design and synthetic methodology. Two projects 
 will be discussed: (1) Fundamental studies of halogen bonding interaction
 s. “Halogen bonding’ (XB) interactions between electron-deficient halo
 gen atoms and Lewis bases have generated much recent interest\, with emerg
 ing applications in crystal engineering\, materials science\, medicinal ch
 emistry and biology. Despite developments exploiting halogen bonding in co
 ndensed phases\, the strengths of the interactions and the feasibility of 
 applying them in the solution phase were not known. Our studies of the the
 rmodynamics of XB in solution and demonstrations of high-affinity molecula
 r recognition based on XB will be described. (2) Catalytic processes base
 d on reversible covalent interactions of organoboron compounds. Interactio
 ns between boron compounds and diols have been studied for decades as the 
 basis for recognition and sensing of sugars. We have discovered new cataly
 tic pathways that exploit these reversible covalent interactions\, giving 
 rise to interesting and useful types of chemo- and regioselectivity. The a
 bility of borinic acids to activate specific hydroxy groups in carbohydrat
 e derivatives forms the basis of a broadly useful class of catalytic trans
 formations\, including selective protection and regioselective\, catalyst-
 controlled glycosylation. Mechanistic studies and applications of these ca
 talytic processes will be discussed.  Information supplémentaire
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