he reactions of divinyldiallyltin and carboxylic acids R′COOH [R′, = H, CH3, CH2Cl, CHCl2, CCl3, CF3) in water-acetone at room temperature afford the following products: trivinyltin carboxylate for R′ = H, CH3; trivinyltin monochloroacetate together with tetravinyl-1-monochloroacetoxy-3-hydroxy-distannoxane (type B) and tetravinyl-1,3-bis(monochloroacetoxy)-distannoxane (type A) for R′ = CH2Cl; both distannoxanes of type A and B for R′ = CHCl2 and CCl3; only that of type A for R′ = CF3. The trivinyltin derivatives having R′ = H, CH3, CH2Cl seem to be produced by a disproportionation reaction of the appropriate distannoxanes. This process has been experimentally established for R′ = CH2Cl and is favoured by protic media (H2O,(CH3)2CO, CH3OH) in comparison with aprotic so1vents (CH3CN, CHCl3).
Tetravinyl disubstituted distannoxanes. Disproportionation reactions to trivinyltin derivatives
PERUZZO, VALERIO;PLAZZOGNA, GUALTIERO;MARTON, DANIELE
1978
Abstract
he reactions of divinyldiallyltin and carboxylic acids R′COOH [R′, = H, CH3, CH2Cl, CHCl2, CCl3, CF3) in water-acetone at room temperature afford the following products: trivinyltin carboxylate for R′ = H, CH3; trivinyltin monochloroacetate together with tetravinyl-1-monochloroacetoxy-3-hydroxy-distannoxane (type B) and tetravinyl-1,3-bis(monochloroacetoxy)-distannoxane (type A) for R′ = CH2Cl; both distannoxanes of type A and B for R′ = CHCl2 and CCl3; only that of type A for R′ = CF3. The trivinyltin derivatives having R′ = H, CH3, CH2Cl seem to be produced by a disproportionation reaction of the appropriate distannoxanes. This process has been experimentally established for R′ = CH2Cl and is favoured by protic media (H2O,(CH3)2CO, CH3OH) in comparison with aprotic so1vents (CH3CN, CHCl3).Pubblicazioni consigliate
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