Vinyl aryl ethers from copper-catalyzed coupling of vinyl halides and phenols
作者:Zhonghui Wan、Chauncey D Jones、Thomas M Koenig、Y.John Pu、David Mitchell
DOI:10.1016/j.tetlet.2003.09.068
日期:2003.11
A general procedure for vinylaryl ether bond formation by direct coupling of vinylhalides and phenols under mild Ullmann-type reaction conditions has been developed. Using copper chloride as the catalyst and cesium carbonate as the base, vinyl bromides or iodides were reacted with phenols in refluxing toluene to produce vinylaryl ethers in good to excellent yields.
Intramolecular hydrogen abstraction by functionalized arylcarbenes
作者:Wolfgang Kirmse、Ismail S. Ozkir
DOI:10.1021/ja00045a057
日期:1992.9
We report contrasting evidence for intramolecular C-H insertion reactions. We have found that (2-alkoxyphenyl)carbenes produce five-membered rings by way of a triplet abstraction-recombination mechanism.