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Hydrosilylation of Aldehydes and Ketones Catalyzed by Half‐Sandwich Manganese(I) N‐Heterocyclic Carbene Complexes
Author(s) -
Zheng Jianxia,
Elangovan Saravanakumar,
Valyaev Dmitry A.,
Brousses Rémy,
César Vincent,
Sortais JeanBaptiste,
Darcel Christophe,
Lugan Noël,
Lavigne Guy
Publication year - 2014
Publication title -
advanced synthesis and catalysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.541
H-Index - 155
eISSN - 1615-4169
pISSN - 1615-4150
DOI - 10.1002/adsc.201300905
Subject(s) - hydrosilylation , imes , carbene , chemistry , manganese , catalysis , toluene , medicinal chemistry , organic chemistry
Easily available manganese(I) N‐heterocyclic carbene (NHC) complexes, Cp(CO) 2 Mn(NHC), obtained in one step from industrially produced cymantrene, were evaluated as pre‐catalysts in the hydrosilylation of carbonyl compounds under UV irradiation. Complexes with NHC ligands incorporating at least one mesityl group led to the most active and selective catalytic systems. A variety of aldehydes (13 examples) and ketones (11 examples) were efficiently reduced under mild conditions [Cp(CO) 2 Mn(IMes) (1 mol%), Ph 2 SiH 2 (1.5 equiv.), hν (350 nm), toluene, 25 °C, 1–24 h] with good functional group tolerance.