Download full text in PDF Opens in a new window. Article suggestions will be shown in a dialog on return to ScienceDirect. ... Please enable JavaScript to use all the features on this page. ... Oxygen directed β-deprotonation of a vinyl ether leads to substituted enol ethers. The stereoselective elaboration to a naturally occuring 1,3-diol is described. ... The enol ether 4 (bp 86–89°(2.0mm )) can be prepared in four steps (80%) from methyl mandelate: (a) CH 3 OCH 2 OCH 3 , P ...