Base catalysed aromatic Claisen rearrangement of 3-hydroxyphenyl allyl ethers
作者:Laurence M. Harwood、Anona J. Oxford、Colin Thomson
DOI:10.1039/c39870001615
日期:——
The 3-hydroxyphenylallylethers (1a–d) have been shown to undergo rearrangement in refluxing aqueous methanolic potassium hydroxide in the presence of oxygen, whereas no reaction occurs in the absence of base and oxygen, and the products formed are the result of accelerated [3,3] sigmatropic processes in which moderate regioselection is operating; evidence is presented for the process being radical