Gold-Film-Catalysed Hydrosilylation of Alkynes by Microwave-Assisted, Continuous-Flow Organic Synthesis (MACOS)
作者:Gjergji Shore、Michael G. Organ
DOI:10.1002/chem.200801610
日期:2008.10.29
Thin gold films on the surface of glass capillaries have proven to be highly active catalysts for the rapid hydrosilylation of alkynes that are flowed through the reactor while being heated by microwave irradiation. The films are able to be reused at least five times with no loss of activity and with no detectable levels of gold showing up in the hydrosilylated products.
Tri(t-butyl)phosphine-assisted selective hydrosilylation of terminal alkynes
作者:Wei Wu、Xiao Yun Zhang、Shou Xing Kang、Yan Min Gao
DOI:10.1016/j.cclet.2009.11.040
日期:2010.3
A highly efficient and regio-/stereoselective method of hydrosilylating terminal alkynes was developed using Pt(DVDS)-tri(t-butyl)phosphine catalyst system at room temperature. Trans-products or alpha-products were obtained almost exclusively depending on the alkynes and silanes employed. (C) 2009 Wei Wu. Published by Elsevier B.V. on behalf of Chinese Chemical Society. All rights reserved.
Configuration-Dependent Ring Opening of Silyloxiranes: Synthesis of Functionalized Alkenes or Tetrahydrofurans
作者:Jens Lange、Ernst Schaumann
DOI:10.1002/ejoc.200900448
日期:2009.9
cis- and trans-Silyloxiranes with a potential tosylate or bromide leaving group in the β position are available by the diastereospecific reduction of the corresponding alkynes with DIBAL-H and hydrosilylation with silanes, respectively. In the reaction with the anion of a silylthioacetal, the outcome of the reaction is configuration dependent: the cis-oxiranes add nucleophilic methanthiolate and give