L. Brandsma et al., Reduction of acetylenic compounds to (E)-olefins by alkali metals - An investigation of the scope, EUR J ORG C, (4), 1999, pp. 775-779
Efficient procedures have been developed for the stereospecific reduction b
y alkali metals of disubstituted acetylenes with long carbon chains. Acetyl
enes containing two or more (isolated) triple bonds are reduced considerabl
y more easily than are monoynes.