Journal of Organometallic Chemistry p. 1 - 6 (1981)
Update date:2022-08-04
Topics:
Lehmkuhl, Herbert
Doering, Ingo
McLane, Raymond
Nehl, H.
The dialk-2-enyl zinc compounds II, XI-XIV can be prepared via reaction of ZnCl2 with the corresponding alk-2-enylmagnesium halides I, VII-X at 20-35 deg C in ether in 68-94percent yield.Diprop-2-enylzinc (II) oligomerizes into 2-allylpropane-1,3-diylzinc (III) during attempted sublimation at 30-50 deg C.The yield of II decreases therefore to < 15percent.The oligomerization can be prevented by complexation of II with dioxane.In this case II is obtained in 86percent yield by cleavage of the dioxane complex.
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