Organic derivatives of tin V. Synthesis and reactions of alkyltin trialkoxides

Abstract

Alkyltin trialkoxides, RSn(OR')₃ (R = Et, n-Bu and R'= CH₃, C₂H₅, i-C₃H₇, n-C₄H₉ and t-C₄H₉) have been synthesised from alkyltin trichlorides and the corresponding sodium alkoxide. Mixed derivatives of the type BuSnX_n(OPr-i)₃ (X = Cl, CH₃CO₂ and C₂H₅CO₂) were obtained by exchange reactions. Reactions of butyltin triisopropoxide with protic reagents (e.g., H₂O, (CH₃)₂C=NOH, o-HOC₆H₄OH, C₆H₅CH₂NH₂, NH₂CH₂CH₂NH₂, i-PrNHCOCH₃, n-BuNHCOCH₃, HCONH₂ and CH₃CONH₂) have been studied. Dialkyltin acetamido derivatives have also been synthesised. IR and NMR spectra and molecular weights of the new products are reported and discussed.