A Convenient Method for the Synthesis of Dialkyl Ethers by Alkylation of Alcohols Using Phosphinimidates in the Presence of a Catalytic Amount of Trimethylsilyl Triflate
作者:Hidenori Aoki、Teruaki Mukaiyama
DOI:10.1246/bcsj.79.1255
日期:2006.8
An alkylation reaction of alcohols with alkyl N-(methylsulfonyl)diphenylphosphinimidates proceeded smoothly in the presence of a catalytic amount of trimethylsilyl triflate (Me3SiOTf) in DME at roo...
Highly efficient Fe(HSO4)3 catalyzed etherification of primary, secondary and tertiary benzylicalcohols with primary and secondary aliphatic alcohols is reported. The reaction affords unsymmetrical benzyl ethers in good to excellent yields under solvent-free conditions.
Kinetic analysis was used as a tool for rational optimization of a catalytic, direct substitution of alcohols to enable the selective formation of unsymmetrical ethers, thioethers, and Friedel–Crafts alkylation products using a moisture-tolerant and commercially available zirconium complex (2 to 8 mol%). Operating in air and in the absence of dehydration techniques, the protocol furnished a variety
The Continuous Acid-Catalyzed Dehydration of Alcohols in Supercritical Fluids: A New Approach to the Cleaner Synthesis of Acetals, Ketals, and Ethers with High Selectivity
作者:William K. Gray、Fiona R. Smail、Martin G. Hitzler、Stephen K. Ross、Martyn Poliakoff
DOI:10.1021/ja991562p
日期:1999.11.1
We report a new continuous method for forming ethers, acetals and ketals using solid acid catalysts, DELOXAN ASP or AMBERLYST 15, and supercritical fluid solvents. In the case of ether formation, we observe a high selectivity for linear alkyl ethers with little rearrangement to give branched ethers. Such rearrangement is common in conventional syntheses. Our approach is effective for a range of n-alcohols
Organohalide-catalyzed dehydrative O-alkylation between alcohols: a facile etherification method for aliphatic ether synthesis
作者:Qing Xu、Huamei Xie、Pingliang Chen、Lei Yu、Jianhui Chen、Xingen Hu
DOI:10.1039/c5gc00284b
日期:——
Organohalides effectively catalyzed dehydrative O-alkylation reactions between alcohols, providing selective, practical, green, and easily scalable homo- and cross-etherification methods for the preparation of useful symmetrical and unsymmetrical aliphatic ethers.