research article
Ruthenium vs. Osmium Complexes as Catalysts for Atom Transfer Radical Addition Reactions
The catalytic activity of [CpOsBr2(PPh3)] in conjunction with Mg has been evaluated for atom transfer radical addition (ATRA) and cyclization (ATRC) reactions. The Os complex enabled these reactions to be performed with similar efficiency as that of the analogous Ru complex [CpRuCl2(PPh3)]. The olefin complex [CpOsBr(H2C=CHPh)(PPh3)] was obtained by reduction of [CpOsBr2(PPh3)] with Mg in the presence of an excess of styrene, whereas an analogous Ru complex was not observed. Kinetic investigations suggest that olefin complexes of Os can form under catalytic conditions.
Type
research article
Web of Science ID
WOS:000281533600006
Date Issued
2010
Publisher
Published in
Start page
3596
End page
3601
Editorial or Peer reviewed
NON-REVIEWED
Written at
EPFL
EPFL units
Available on Infoscience
July 8, 2010
Use this identifier to reference this record