BEGIN:VCALENDAR VERSION:2.0 PRODID:-//jEvents 2.0 for Joomla//EN CALSCALE:GREGORIAN METHOD:PUBLISH BEGIN:VEVENT UID:f26f23ecfcd195760cca0e1d75b9051d CATEGORIES:Seminar CREATED:20190905T172429 SUMMARY:Professor Michael Chetcuti LOCATION:CCB 4217 DESCRIPTION:
“Ni ckel Complexes with N-heterocyclic Carbene Ligands: Chemistry and Homogeneo us Catalytic Reactions”
Simple n ickel(II) complexes with N-heterocyclic carbene (NHC) ligands show a large spectrum of activity in homogeneous catalysis, that includes Suzuki-Miyaura coupling, aldehyde, ketones and imine hydrosilylation, and a-ketone arylat ion. In addition, they are able to promote C–H activation reactions; in add ition, the unusual labilization of a cyclopentadienyl ligand bound to an 18 -electron Ni complex has been demonstrated with such nickel-NHC complexes. After a review of some earlier research, recent results that include the is olation of a 14-electron T-shaped nickel complex, the catalytic activity of sulfur-containing NHC complexes, alkene hydroboration catalysis and the sy nthesis of Ni-NHC ligands grafted onto calixarenes will be presented.
Recent Publications:
"B
enzothiazole Nickelation: An Obstacle to the Catalytic Arylation of Azoles
by Cyclopentadienyl Nickel N-Heterocyclic Carbene Complexes"
Cata
lysts 2019, 9, 76-85.
"Synthesis, characterization,
and catalytic application in aldehyde hydrosilylation of half-sandwich Ni
complexes bearing (?1-C)- and hemilabile (?2-C,S)-thioether-functionalized
NHC ligands"
Dalton Trans. 2018, 47,17134-17145
.
"Displacement of ?5-cyclopentadienyl ligands from half-sandwich C,C
-(NHC-cyanoalkyl)-Ni(II) metallacycles: further insight into the structure
of the resulting Cp-free Ni acycles and a catalytic activity study."
Dalton Trans 2018, 47, 1535-1547.
"Ni(II) compl
exes of highly ?-donating cyclic (alkyl)(amino)- and malonate-carbenes: syn
theses and catalytic studies."
Organometallics 2017,
36, 1113-1121.
"Ni N-heterocyclic carbene-catalyzed C–heteroatom
bond formation, reduction, and oxidation: reactions and mechanistic aspect
s."
ACS Catalysis 2016, 5, 890-906.
~Coffee/tea will be served prior to lecture~
X-ALT-DESC;FMTTYPE=text/html:“Nickel Complexes with N-heterocyclic Carbene Liga nds: Chemistry and Homogeneous Catalytic Reactions”
Simple nickel(II) complexes with N-heterocyclic carbene (NHC) ligands show a large spectrum of activity in homogeneous catalysis, that includes Suzuki-Miyaura coupling, aldehyde, ketones and imine hydrosil ylation, and a-ketone arylation. In addition, they are able to promote C–H activation reactions; in addition, the unusual labilization of a cyclopenta dienyl ligand bound to an 18-electron Ni complex has been demonstrated with such nickel-NHC complexes. After a review of some earlier research, recent results that include the isolation of a 14-electron T-shaped nickel comple x, the catalytic activity of sulfur-containing NHC complexes, alkene hydrob oration catalysis and the synthesis of Ni-NHC ligands grafted onto calixare nes will be presented.
Recent Publications:
"Benzothiazole Nickel
ation: An Obstacle to the Catalytic Arylation of Azoles by Cyclopentadienyl
Nickel N-Heterocyclic Carbene Complexes"
Catalysts 2019
b>, 9, 76-85.
"Synthesis, characterization, and catalytic appl
ication in aldehyde hydrosilylation of half-sandwich Ni complexes bearing (
?1-C)- and hemilabile (?2-C,S)-thioether-functionalized NHC ligands"
Dalton Trans. 2018, 47,17134-17145.
"Displaceme
nt of ?5-cyclopentadienyl ligands from half-sandwich C,C-(NHC-cyanoalkyl)-N
i(II) metallacycles: further insight into the structure of the resulting Cp
-free Ni acycles and a catalytic activity study."
Dalton Trans
i>2018, 47, 1535-1547.
"Ni(II) complexes of highly ?-do
nating cyclic (alkyl)(amino)- and malonate-carbenes: syntheses and catalyti
c studies."
Organometallics 2017, 36, 1113-1121.
"Ni N-heterocyclic carbene-catalyzed C–heteroatom bond formation, re
duction, and oxidation: reactions and mechanistic aspects."
ACS C
atalysis 2016, 5, 890-906.
~Coffee/tea will be served prior to lecture~< /p> X-EXTRAINFO:Hosted by Professor Alan Goldman DTSTAMP:20240328T083541 DTSTART:20191031T150000 DTEND:20191031T160000 SEQUENCE:0 TRANSP:OPAQUE END:VEVENT END:VCALENDAR