(NHC-olefin)-nickel(0) nanoparticles as catalysts for the (Z)-selective semi-hydrogenation of alkynes and ynamides†‡
Marta G.
Avello, 
a
Lai
Truong-Phuoc,
b
Michael J.
Chetcuti,
a
Frédéric R.
Leroux,
a
Morgan
Donnard,
a
Vincent
Ritleng,
*a
Cuong
Pham-Huu
*b
and
Christophe
Michon
*a
a
Lai
Truong-Phuoc,
b
Michael J.
Chetcuti,
a
Frédéric R.
Leroux,
a
Morgan
Donnard,
a
Vincent
Ritleng,
*a
Cuong
Pham-Huu
*b
and
Christophe
Michon
*a
Abstract
Nickel(0) nanoparticles coordinated to NHC ligands bearing N-coordinated cinnamyl moieties were readily prepared by reduction of a [NiCpBr(NHC-cinnamyl)] complex with methyl magnesium bromide. The combination of a strong σ-donor NHC ligand with a π-coordinating appended cinnamyl moiety likely prevents nickel(0) nanoparticle aggregation to larger inactive species, and allows the effective and (Z)-selective semi-hydrogenation of alkynes and ynamides.
Please wait while we load your content...
