Add time:09/04/2019 Source:sciencedirect.com
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 containing heteroatoms such as O or N undergo only protodestannylation with this electrophile. The reaction of Z-1,2-bis (trimethylstannyl)-1-alkenes with trimethylsilyl chlorosulphonate followed by hydrolysis with aqueous NaHCO3 provides the corresponding sodium sulphonates. SO2 and SO3 undergo insertion into both tin-carbon bonds in an ipso- and stereospecific manner to form bis-sulphinic- or bis-sulphonic bis(trialkylstannyl) esters.
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