Abstract The Dialk-2-enyl zinc compounds II, XI–XIV can be prepared via reaction of ZnCl 2 with the corresponding alk-2-enylmagnesium halides I, VII–X at 20–35 C in ether in 68–94% yield. Diprop-2-enylzinc (II) oligomerizes into 2-allylpropane-1, 3-diylzinc (III) during attempted sublimation at 30–50 C. The yield of II decreases therefore to< 15%. The oligomerization can be prevented by complexation of II with dioxane. In this case II is ...
