Aromatic Claisen Rearrangements of Benzyl Ketene Acetals: Conversion of Benzylic Alcohols to (
<i>ortho</i>
‐Tolyl)acetates
作者:Jed M. Burns、Elizabeth H. Krenske、Ross P. McGeary
DOI:10.1002/ejoc.201601354
日期:2017.1.10
Claisen rearrangements of benzyl vinyl ethers are much less facile than those of aliphatic allyl vinyl ethers, and their synthetic utility has remained relatively unexplored. A one-pot procedure is reported for the generation and Claisen rearrangement of benzyl vinyl ethers that contain an activating α-alkoxy substituent on the vinyl group. A [3,3]-sigmatropic mechanism was supported by trapping of the