potential of oxide-supported single-atom metal catalysts (SACs) is key to successfully bridge the gap between the fields of homogeneous and heterogeneous catalysis. Here we show that the one-pot combination of Ru1 /CeO2 and Rh1 /CeO2 SACs enables a highly selective olefin isomerization-hydrosilylation tandem process, hitherto restricted to molecular catalysts in solution. Individually, monoatomic Ru and
chance to develop new catalytic systems before empirical studies were undertaken. Then the iridium-catalyzed domino hydroformylation/reduction of olefins to alcohols under water–gas shift reaction conditions was studied as an example. Two different ligands (L1 and L10) applied at the same time improved alcohol yields and verified the computational model.
The hydroboration of silylacetylenes. The "silyl-Markovnikov" hydroboration route to pure (Z)-1-(2-borylvinyl)silanes and .beta.-keto silanes
作者:John A. Soderquist、Juan C. Colberg、Luis Del Valle
DOI:10.1021/ja00195a046
日期:1989.6
complete characterization of the intermediate organoboranes by 75-MHz sup13}C NMR wasmore » achieved. A detailed discussion of the phenomena involved is presented. The observed results are attributed primarily to the additional steric effects imposed on an unsaturated system by a trialkylsilyl group when compared to a hydrogen atom at that position.« less