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DTSTART:20270328T030000
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BEGIN:VEVENT
DTSTAMP:20261009T060703Z
UID:1796374800@ist.ac.at
DTSTART:20261204T100000
DTEND:20261204T110000
DESCRIPTION:Speaker: Aleksander Bena\nhosted by Calin Guet\nAbstract: Trans
 ition-metal catalysis has transformed modern organic synthesis\, enabling 
 the efficient and selective formation of chemical bonds. The success of th
 is field largely depended on the development of tailored ligands that can 
 tune the reactivity of the metal center. Nickel catalysis has emerged as a
  particularly versatile platform for cross-coupling reactions\, thanks to 
 its ability to access multiple oxidation states. However\, the instability
  of paramagnetic nickel species can make these reactions difficult to cont
 rol. Despite the central role of ligands in transition-metal catalysis\, t
 heir use in tuning the reactivity of such nickel intermediates remains com
 paratively underexplored. Modular amino-functionalized bipyridine ligands
  were developed to control the reactivity of Ni(I) intermediates and facil
 itate challenging elementary steps in cross-coupling catalysis. This appro
 ach facilitated carbon-carbon and carbon-heteroatom bond formation via Ni(
 I)/Ni(III) catalytic pathways. Notably\, a new ligand-design facilitated v
 isible-light induced C(sp²)-heteroatom cross-coupling reactions\, elimina
 ting the need for an additional photocatalyst and enabling the coupling of
  a broad range of nitrogen-\, oxygen-\, sulfur- and phosphorus-based nucle
 ophiles with challenging aryl electrophiles\, using unprecedented low cata
 lyst loadings.
LOCATION:Sunstone Bldg / Ground floor / Lab Meeting room (I23.EG.005)\, IST
 A
ORGANIZER:
SUMMARY:Aleksander Bena: Tuning the Catalytic Reactivity of Ni(I) through L
 igand Design
URL:https://talks-calendar.ista.ac.at/events/6689
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