64788-85-8Relevant articles and documents
Silsesquioxyl rhodium(i) complexes - Synthesis, structure and catalytic activity
Marciniec, Bogdan,Kownacki, Ireneusz,Franczyk, Adrian,Kubicki, MacIej
, p. 5073 - 5077 (2011)
The first bi- and mononuclear rhodium(i) complexes [{Rh(μ-OSi 8O12(i-Bu)7)(cod)}2] (5), [Rh(cod)(PCy3)(OSi8O12(i-Bu)7)] (6) with a hindered hepta(iso-butyl)silsesquiox
Caged Iridium Catalyst for Hydrosilylation of Alkynes with High Site Selectivity
Gu, Defa,Li, Qiaosheng,Liu, Yuzhou,Yu, Dongdong
, (2022/02/02)
The proximity and orientation of the reacting groups can be different in organic cages from in free solution, thus affecting the selectivity of the reaction. Herein, we reported a synthetic strategy to encapsulate iridium nanoparticles (Ir-NP@COP1-T) within organic cages in the homogeneous solution. Ir-NP@COP1-T showed good selectivity in the hydrosilylation reaction of alkynes. Our work provides a new perspective to the catalysis field by using soluble microporous cages as support for inorganic nano particles.
Manganese-Catalyzed Dehydrogenative Silylation of Alkenes following Two Parallel Inner-Sphere Pathways
Weber, Stefan,Glavic, Manuel,St?ger, Berthold,Pittenauer, Ernst,Podewitz, Maren,Veiros, Luis F.,Kirchner, Karl
supporting information, p. 17825 - 17832 (2021/11/04)
We report on an additive-free Mn(I)-catalyzed dehydrogenative silylation of terminal alkenes. The most active precatalyst is the bench-stable alkyl bisphosphine Mn(I) complex fac-[Mn(dippe)(CO)3(CH2CH2CH3)]. The catalytic process is initiated by migratory insertion of a CO ligand into the Mn-alkyl bond to yield an acyl intermediate which undergoes rapid Si-H bond cleavage of the silane HSiR3 forming the active 16e- Mn(I) silyl catalyst [Mn(dippe)(CO)2(SiR3)] together with liberated butanal. A broad variety of aromatic and aliphatic alkenes was efficiently and selectively converted into E-vinylsilanes and allylsilanes, respectively, at room temperature. Mechanistic insights are provided based on experimental data and DFT calculations revealing that two parallel reaction pathways are operative: an acceptorless reaction pathway involving dihydrogen release and a pathway requiring an alkene as sacrificial hydrogen acceptor.