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SUMMARY:(3d) Metal catalysis for the construction of functionalized aromat
 ic rings
DTSTART:20260427T171500
DTEND:20260427T180000
DTSTAMP:20260506T180704Z
UID:8a4b74a55ca35977c0e28e3390f249ec809179fa762ab20c5d8691d5
CATEGORIES:Conferences - Seminars
DESCRIPTION:Prof. Marko Hapke\, University of Linz\n\nMetal-catalyzed or -
 mediated methods for the assembly and decoration of (hetero)aromatic syste
 ms have become a beacon of synthetic methodology in organic synthesis over
  the last decades. Transition metal-catalyzed [2+2+2] cycloaddition reacti
 ons were part of this development and are now widely recognized for their 
 versatility and atom efficiency. A notable feature of this reaction is its
  ability to be mediated or catalyzed by a broad range of transition metals
 .1 Among these\, first-row late transition metals\, such as nickel and cob
 alt\, were among the earliest to show successful examples of catalytic cyc
 lotrimerizations\, exhibiting distinct and unique catalytic properties com
 pared to their heavier counterparts. In particular\, the use of CpCo(I) pr
 ecatalysts for assembling heterocyclic and carbocyclic compounds is highly
  versatile\,2 operating under various conditions and with a steadily expan
 ding substrate scope.3\nThe development of precatalysts and catalytic syst
 ems is\, however\, still a fruitful field of research and activation under
  photochemical conditions an active field of research. A recent expansion 
 was the first application of manganese complexes for photo-catalyzed cyclo
 trimerization reactions\, demonstrating simple complexes to be efficient c
 atalysts under irradiation with visible light.4 In particular\, the invest
 igation of unusual oxidation states in precatalysts or catalytic cycles ca
 n provide novel reactivities and the access to so far rather rarely synthe
 sized compounds\, e. g. the synthesis of phosphinines from phosphaalkynes.
 5\n\n\nReferences\n[1] A. Roglans\, A. Pla-Quintana\, M. Sola\, Chem. Rev.
  2021\, 121\, 1894-1979.\n[2] E. Bednářová\, D. Nečas\, R. Usman\, A. 
 K. Satheeshkumar\, R. Gyepes\, I. Císařová\, M. Hapke\, M. Kotora\, Che
 mistryEurope 2025\, 3\, e202500165.\n[3] Overviews: T. Gläsel\, B. N. Bau
 mann\, M. Hapke\, Chem. Rec. 2021\, 21\, 3727-3745\; K. Cen\, M. Usman\, W
 . Shen\, M. Liu\, R. Yang\, J. Cai\, Org. Biomol. Chem. 2022\, 20\, 7391-7
 404.\n[4] B. N. Baumann\, P. Dam\, J. Rabeah\, C. Kubis\, A. Brückner\, H
 . Jiao\, M. Hapke\, ACS Catal. 2025\, 15\, 5718-5730.\n[5] T. Gläsel\, H.
  Jiao\, M. Hapke\, ACS Catal. 2021\, 11\, 13434-13444.\n\n\n 
LOCATION:Unil - Génopode B
STATUS:CONFIRMED
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