An indium(III) bromide-triethylsilane reagent system promotes direct reduction of esters to produce the corresponding unsymmetrical ethers. This simple catalytic system accommodated other carbonyl compounds, such as a tertiary amide and a carboxylic acid.
Catalyst- and Stoichiometry-Dependent Deoxygenative Reduction of Esters to Ethers or Alcohols with Borane–Ammonia
作者:P. Veeraraghavan Ramachandran、Abdulkhaliq A. Alawaed、Henry J. Hamann
DOI:10.1021/acs.orglett.3c02643
日期:2023.9.22
temperature deoxygenation of both aromatic and aliphaticcarboxylic esters to ethers has been achieved by regulating the stoichiometry of the reductant, BH3–NH3, and the catalyst, TiCl4. This first, practical borane-mediated process is compatible with various potentially sensitive functional groups and is applicable to the deoxygenative ether formation from typically challenging aromaticacid esters. Substituting
Es wird ein Verfahren zur Herstellung von Oligoribonucleotiden der Formel
worin n, L, BB, W, T, Y', U, C¹ und C² wie in der Beschreibung definiert sind, mittels Festphasensynthese beschrieben sowie Zwischenprodukte der Formeln
und
An Efficient One-Pot Synthesis of Unsymmetrical Ethers: A Directly Reductive Deoxygenation of Esters Using an InBr<sub>3</sub>/Et<sub>3</sub>SiH Catalytic System
作者:Norio Sakai、Toshimitsu Moriya、Takeo Konakahara
DOI:10.1021/jo070814z
日期:2007.7.1
This study describes a novel one-pot procedure for a directly reductive conversion of the carbonyl function of esters to the corresponding ethers by Et3SiH in the presence of a catalytic amount of InBr3.