Abstract
Mixed tetra-alkylstannanes R 3SnR′ (R=Et, n-Pr, n-Bu and R′=Me, Et, n-Pr, n-Bu, n-Pent) and R 2SnR′ 2 (R= n-Bu and R′=Me, Et, n-Pr, n-Bu) can be easily prepared in a one-pot synthesis via coupling reaction of alkyl iodides R′I with R 3SnX (X=Cl, I) and R 2SnCl 2 compounds in cosolvent–H 2O(NH 4Cl) medium mediated by zinc dust. Coupling also occurs with (Bu 3Sn) 2O. It has been verified that reactions are possible only with primary alkyl iodides; with secondary alkyl iodides the coupling reaction fails. When alkyl chlorides and bromides are used ditin compounds are obtained instead of the unsymmetrical tetra-alkylstannanes. This represents a route to hexaalkyldistannanes.
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