Z-1, 2-Bis (trimethylstannyl)-1-alkenes show different types of reaction behaviour towards various electrophiles. p-Tolysulphonyliso-cyanate forms five-membered tin-nitrogen- containing heterocycles. 1, 1-Dichloromethylmethyl ether reacts with carbofunctionalised distannylalkenes to yield α, β-unsaturated aldehydes, which are useful tools for the synthesis of further substituted vinylstannanes. Z-1, 2-Bis (trimethylstannyl)-1-alkenes ...