Zm. Li et al., Highly selective synthesis of acetylenic alcohols promoted by metallic dysprosium in the presence of mercuric chloride, SYN COMMUN, 30(14), 2000, pp. 2515-2524
Promoted by metallic dysprosium, carbonyl compounds react smoothly with pro
pargyl bromide to afford the corresponding homopropargylic alcohols in good
to excellent yields without observation of allenic alcohols. In addition,
this reaction is regioselective and chemoselective.