Palladium-catalysed dehydration of propynyl alcohols with tin(II) chloride
Abstract
α,γ-Disubstituted propynyl alcohols having a proton on 1-position of α-substituent have been dehydrated using PdCl2(PPh3)2 and SnCl2 in 1,3-dimethylimidazolidin-2-one under neutral conditions to produce 1,4-disubstituted (Z)-but-3-en-1 -ynes stereoselectively.