Reductive Etherification via Anion-Binding Catalysis
作者:Chenfei Zhao、Christopher A. Sojdak、Wazo Myint、Daniel Seidel
DOI:10.1021/jacs.7b05832
日期:2017.8.2
Reductive condensations of alcohols with aldehydes/ketones to generate ethers are catalyzed by a readily accessible thiourea organocatalyst that operates in combination with HCl. 1,1,3,3-tetramethyldisiloxane serves as a convenient reducing reagent. This strategy is applicable to challenging substrate combinations and exhibits functional group tolerance. Competing reductive homocoupling of the carbonyl
Reductive Etherification of Aldehydes and Ketones with Alcohols and Triethylsilane Catalysed by Yb(OTf)
<sub>3</sub>
: an Efficient One‐Pot Benzylation of Alcohols
The one‐pot synthesis of symmetrical and unsymmetrical ethers from aldehydes and ketones can be conveniently performed using Yb(OTf)3 as catalyst and triethylsilane as reducing agent in presence of alcohols. This methodology leads to the synthesis of ether derivatives with good yields. Notably, this process resulted a useful tool to protect alcohols as benzyl ether derivatives using differently substituted
A method for preparing an aryl ether compound is provided in which an alcohol is reacted with an aromatic compound in the presence of a base, and a transition metal catalyst selected from the group consisting of platinum and nickel to form an aryl ether. The aromatic compound comprises an activated substituent, X, said activated substituent being a moiety such that its conjugate acid HX has a pKa of less than 5.0. The catalyst is preferably a soluble palladium complex in the presence of supporting ligands.
Preparation of vinyl ethers from alcohols and alkenes
申请人:MASSACHUSETTS INSTITUTE OF TECHNOLOGY
公开号:EP1254884A2
公开(公告)日:2002-11-06
This invention relates to a method for preparing a vinyl ether compound comprising reacting an alcohol or an alkoxide salt with an alkene in the presence of a base and a catalyst selected from the group consisting of complexes of nickel, palladium and platinum.
This invention relates to a method for preparing an aryl ether compound comprising reacting an alcohol with an aromatic compound in the presence of a catalyst comprising palladium and a chelating ligand.