An efficient and green approach for the synthesis of vinyl aryl ethers in the presence of guanidine hydrochloride
作者:SEYED MOHAMMAD VAHDAT、ROBABEH BAHARFAR
DOI:10.3906/kim-1002-24
日期:——
A stereoselective procedure for vinyl aryl ether bond formation by direct coupling of dialkyl acetylenedicarboxylates and substituted phenols or naphthols under mild reaction conditions has been developed. Using guanidine hydrochloride as a new catalyst and water-acetone as green solvent, dialkyl acetylenedicarboxylates were reacted with substituted phenols or naphthols in room temperature to produce vinyl aryl ethers in good to excellent yields.
Diastereoselective O-Vinylation of Phenols using DMAD under Mild Reaction Conditions
作者:Ebrahim Kianmehr、Katayoun Tabatabai、Alireza Abbasi、Hamideh Shokouhi Mehr
DOI:10.1080/00397910802219163
日期:2008.7.24
An efficient and straightforward pyridine-catalyzed method allowing selective O-vinylation of phenols with DMAD is reported. The reaction is diastereoselective and leads exclusively to (Z)-configuration in high yields.
Trimethylamine catalyzed stereoselective reaction between dimethyl acetylenedicarboxylate and phenols
作者:Farough Nasiri、Bahareh Atashkar
DOI:10.1007/s00706-008-0919-z
日期:2008.10
Stereoselective reaction of various substituted phenols with dimethylacetylenedicarboxylate in the presence of a catalytic amount of aqueous trimethylamine solution in dichloromethane leads to dimethyl 2-phenoxymaleates in good to excellent yields under mild condition.