An efficient method for the dehydrogenative coupling of silanes with alcohols under photocatalysis was developed. The reaction proceeded in the presence of Ru(bpy)3Cl2 (0.5 mol%) under visible light irradiation in acetonitrile at room temperature. The developed methodology was also applicable for the synthesis of silanols using water as a coupling partner.
Aniline–terephthalaldehyde resin p-toluenesulfonic acid (ATRT) salt as efficient mild polymeric solid acid catalyst
作者:Kiyoshi Tanemura、Tsuneo Suzuki
DOI:10.1016/j.tetlet.2013.09.137
日期:2013.12
Aniline-terephthalaldehyde resin p-toluenesulfonic acid (ATRT) salt was easily prepared by the reaction of aniline with 1.25 equiv of terephthalaldehyde in the presence of 1.0 equiv of p-toluenesulfonic acid at 75 degrees C for 24 h in EtOH. ATRT efficiently catalyzed the tetrahydropyranylation of alcohols and deprotection of tetrahydropyranyl (THP), triethylsilyl (TES), and tert-butyldimethylsilyl (TBDMS) ethers. Deprotection of dodecyl THP ether and dodecyl TBDMS ether catalyzed by ATRT proceeded faster than those by pyridinium p-toluenesulfonate (PPTS). ATRT was reused without significant loss of activities. (C) 2013 Elsevier Ltd. All rights reserved.
Tanemura, Kiyoshi; Suzuki, Tsuneo; Horaguchi, Takaaki, Journal of the Chemical Society. Perkin transactions I, 1992, # 22, p. 2997 - 2998
Use of Silylated Formiates as Hydrosilane Equivalents
申请人:Commissariat a l'Energie Atomique et aux Energies Alternatives
公开号:US20210292345A1
公开(公告)日:2021-09-23
The present invention relates to a method for preparing organic compounds of formula (I) by reaction between a silylated formiate of formula (II) and an organic compound in the presence of a catalyst and optionally of an additive.
The invention also relates to use of the method for preparing organic compounds of formula (I) for the preparation of reagents for fine chemistry and for heavy chemistry, as well as in the production of vitamins, pharmaceutical products, adhesives, acrylic fibres, synthetic leathers, and pesticides.
Diphenylamine-Terephthalaldehyde Resin <i>p</i>-Toluenesulfonate (DTRT) as an Efficient Catalyst for Tetrahydropyranylation, Deprotection of Tetrahydropyranyl and Silyl Ethers, Esterification, and Transesterification
作者:Kiyoshi Tanemura、Tsuneo Suzuki
DOI:10.1080/00304948.2016.1127103
日期:2016.1.2
employed in organic synthesis because of simplified work-up procedure, use of the recycled catalysts, and minimized corrosion of metallic reaction vessels. Although several strongly acidic resin catalysts such as Amberlyst 15, Dowex 50, and Nafion NR50 have been used as catalysts, they are not suitable for use with acid-sensitive compounds. The few commercially available weakly acidic resins such as poly(4-vinylpyridinium