A new practical and highly regioselective synthetic method for (E)-enol eth
er is reported. (E)-enol ethers (E:Z = 93:7-99:1) were prepared from the co
rresponding enol acetates (E:Z congruent to 3:1) in two steps by brominatio
n and anti-elimination of alpha-bromodialkylacetal via metal halogen exchan
ge. (C) 2000 Elsevier Science Ltd. All rights reserved.