Optically active acylsilanes. Synthesis of selected 2,3-O-isopropylidene-1-(trialkyl/arylsilyl)glyceraldehyde derivatives
摘要:
Syntheses of 1-trimethylsilyl-, 1-tert-butyldimethylsilyl, 1-dimethylphenylsilyl- and 1-triphenylsilyl-2,3-O-isopropylideneglyceraldehyde derivatives, 6a, 6b, 6c, and 6d, respectively, is described.
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.
Allylsilanes in organic synthesis; convenient preparation of synthetic intermediates by catalytic hydrosilation of acetylenic alcohols
作者:Patrick J. Murphy、John L. Spencer、Garry Procter
DOI:10.1016/s0040-4039(00)94428-9
日期:1990.1
Synthetically useful vinylslane-alcohols such as (1) can be easily prepared by the catalytic hydrosilation of the appropriate acetylenic alcohols in high yield, and with excellent regioand stereoselectivity, without the need to protect the hydroxyl group.
Homologation Reaction of γ-Silicon Substituted Allylic Alcohols Using Organoaluminium Reagents and Diiodomethane
作者:Yutaka Ukaji、Katsuhiko Inomata
DOI:10.1246/cl.1992.2353
日期:1992.12
One carbon homologation reaction of γ-silicon substituted allylic alcohols was found to proceed by the treatment with triethylaluminium followed by diethylaluminium chloride and diiodomethane to afford homoallylic iodides instead of the corresponding cyclopropanes. Silicon function introduced to γ-position was crucial for the homologation reaction.
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.