- GEMISCHTE ORGANOZINKVERBINDUNGEN DURCH AUSTAUSCHREAKTIONEN VON DIORGANOZINKVERBINDUNGEN
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The exchange of organyl groups between various diorganozinc compounds, R12Zn (R1=CHMe2 (1), CH2(CH2)2Me (2), CH2C(Me)=CH2 (3), CH2CH=CHMe (4)) and R22Zn (R2=Et (5), CH(Me)Et (6), CH2(CH2)3Me (7), CMe3 (8), Menth
- Nehl, Hans,Scheidt, Walter R.
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- BIS(ALK-2-ENYL)ZINK AUS ORGANOMAGNESIUMHALOGENIDEN
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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.
- Lehmkuhl, Herbert,Doering, Ingo,McLane, Raymond,Nehl, H.
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