51276-65-4Relevant articles and documents
Enantioselective catalysis: Part 129. A new rhodium(I) complex with a μ2-H bridged Cp2WH2 ligand
Brunner, Henri,Mijolovic, Darijo
, p. 346 - 350 (1999)
The optically active complex {[(-)-diop]Rh(μ2-H)2WCp2}PF6 was prepared and characterized. In four different models of enantioselective catalysis the complex gave the same enantioselectivity as the catalysts [Rh(cod)Cl]2/(-)-diop and [Rh(cod)Cl]2/(-)-diop/Cp2WH2.
Novel carbonyliridium and -rhodium complexes containing 2,6-bis[(4′S)-4′-isopropyloxazolin-2′-yl]pyridine (iPr-pybox) and 2,6-Bis[(4′R)-4′-phenyloxazolin-2′-yl]pyridine (Ph-pybox) ligands
Cuervo, Dario,Diez, Josefina,Gamasa, M. Pilar,Gimeno, Jose,Paredes, Paloma
, p. 599 - 608 (2006)
The iridium(I) complexes [Ir(CO)(κ3-N,N,N-R-pybox)] [PF6] [R-pybox = (S,S)-iPr-pybox (1), (R,R)-Ph-pybox (2)] have been prepared by reaction of their precursor complexes [Ir(η2-C 2H4)2(κsu
Catalytic hydrosilylation of olefins and ketones by base metal complexes bearing a 2,2′:6′,2″-terpyridine ancillary ligand
Kobayashi, Katsuaki,Nakazawa, Hiroshi
, (2021/06/12)
The activities of [M(tpy)Br2] (M = Mn, Co, Ni, or Cu) for the hydrosilylation of olefins and ketones were investigated in the presence of NaBHEt3 as an activator. [Co(tpy)Br2] and [Ni(tpy)Br2] showed catalytic a
Four-Coordinated Manganese(II) Disilyl Complexes for the Hydrosilylation of Aldehydes and Ketones with 1,1,3,3-Tetramethyldisiloxane
Saito, Kyoka,Ito, Tatsuyoshi,Arata, Shogo,Sunada, Yusuke
, p. 1152 - 1156 (2020/12/18)
The coordinatively unsaturated manganase(II) bis(supersilyl) complex Mn[Si(SiMe3)3]2(THF)2 (2) was synthesized in one step via the reaction of MnBr2 with two equivalents of KSi(SiMe3)3 in THF. Complex 2 acts as an effective precatalyst for the catalytic hydrosilylation of aldehydes and ketones with 1,1,3,3-tetramethyldisiloxane (TMDS). The catalytic efficiency can be improved by combining 2 and adamantyl isocyanide (CNAd). The stoichiometric reaction of 2 and two equivalents of CNAd led to the isolation of Mn[Si(SiMe3)3]2(CNAd)2 (3) in high yield. Complex 3 shows superior catalytic performance than 2 in the hydrosilylation of relatively unreactive ketones.
First study of rhodium(I) complexes with chiral sulfur-containing terpenoids as catalytic systems for ketone hydrosilylation
Uvarov, Vladimir M.,de Vekki, Dimitry A.
, p. 376 - 387 (2019/12/24)
Using a “chiral pool” approach, a number of chiral thiolate and sulfide ligands based on natural terpenes and terpenoids have been synthesized in a few simple steps. Two new Rh-thiolate complexes with the formula [Rh(CO)2(μ-SR)]2 were obtained. The influence of these complexes and catalytic systems formed by combining the synthesized ligands with [Rh(CO)2(μ-Cl)]2 and [Rh(cod)(μ-Cl)]2, on the reaction rate, chemoselectivity, stereoselectivity and formation of tetraphenyldisiloxane in Rh-catalyzed asymmetric hydrosilylation of acetophenone as a model reaction have been studied. Mechanistic aspects of formation of silyl enol ether as a side product in the presence of S-containing ligands are presented.
