Benzylation of phenol was successfully achieved in water under room temperature mediated by tetrabutylammonium bromide (TBAB) for only 2 h affording the corresponding benzyl phenyl ether with good to excellent yields. This protocol is very efficient, simple, avoiding catalysts, easy to work-up after reaction, and especially ‘green’.
[EN] NOVEL PREPARATION METHOD OF QUINOLINE N-OXIDE DERIVATIVE WITH AMIDE GROUP<br/>[FR] NOUVEAU PROCÉDÉ DE PRÉPARATION D'UN DÉRIVÉ DE N-OXYDE DE QUINOLÉINE AYANT UN GROUPE AMIDE
申请人:INST BASIC SCIENCE
公开号:WO2015160125A1
公开(公告)日:2015-10-22
Provided are a preparation method of a quinoline N-oxide derivative with an amide group capable of easily introducing the amide group into the quinoline N-oxide derivative by simplified processes and mild reaction conditions, and a quinoline N-oxide derivative with an amide group prepared by using the same.
An efficient approach towards syntheses of ethers and esters using CsF–Celite as a solid base
作者:Syed Tasadaque A Shah、Khalid M Khan、Angelica M Heinrich、M.Iqbal Choudhary、W Voelter
DOI:10.1016/s0040-4039(02)02060-9
日期:2002.11
The coupling reactions of a number of alcohols and phenols with alkyl, acyl or benzoyl halides in acetonitrile with cesium fluoride–Celite are described. It has been found that CsF–Celite combinations provide an efficient, convenient and practical method for syntheses of both, ethers and esters.
Cesium fluoride-Celite: a solid base for efficient syntheses of aromatic esters and ethers
作者:Syed Tasadaque Ali Shah、Khalid Mohammed Khan、Hidayat Hussain、Muhammad Usman Anwar、Miriam Fecker、Wolfgang Voelter
DOI:10.1016/j.tet.2005.03.126
日期:2005.7
Coupling reactions of a number of aromatic and heteroaromatic phenols with alkyl, acyl or benzoyl halides in acetonitrile with cesium fluoride-Celite are described, demonstrating that this reagent provides an efficient, convenient and practical method for the syntheses of aromaticesters and ethers.
Selectivity of N- Versus O-Alkylation in Mitsunobu Reactions with Various Quinolinols and Isoquinolinols
作者:Ryan E. Hartung、Mark C. Wall、Sylvain Lebreton、Martin Smrcina、Marcel Patek
DOI:10.3987/com-17-13710
日期:——
equilibria that allows systems of this nature to react as ambident nucleophiles through the conjugate base resonance structures, often leading to mixtures of Oand N-alkylation. However, like with 2-pyridones, we observed that many factors can influence the alkylation ratio. These include, but are not limited to, solvation of the nucleophile (conjugate base of the heterocycle), the electrophilicity of the activated