Regiospecific Vinyl Phosphate/β-Keto Phosphonate Rearrangements Initiated by Halogen−Metal Exchange
作者:Tracy J. Baker、David F. Wiemer
DOI:10.1021/jo972131x
日期:1998.4.1
trapping the resulting enolate by reaction with a dialkyl phosphorochloridate gives the 2-bromovinyl phosphate. Metalation can be accomplished upon treatment with n-BuLi, and rearrangement is facile once metalation has been achieved. Studies with isotopically labeled substrates have shown that this rearrangement is regiospecific, in contrast to vinyl phosphate/beta-keto phosphonate rearrangements induced