β-SUBSTITUTED ALKYLTIN HALIDES. III. SYNTHESIS OF TRIALKYLTIN HALIDES AND TETRAALKYLTINS

Article abstract of DOI:10.1016/S0022-328X(00)99501-9

(β-Carboalkoxyethyl)tin trihalides and bis(β-carboalkoxyethyl)tin dihalides react with metallic zinc to give mixtures of the corresponding tris(β-carboalkoxyethyl)tin halides and the tetra(β-carboalkoxyethyl)tins.Bis(β-carboalkoxyethyl)tin diacetates react with metallic zinc to give only the corresponding tetra(β-carboalkoxyethyl)tin compounds.The mechanisms of these reactions are discussed.Conversion of the bis(β-carboalkoxyethyl)tin dihalides into the tris(β-carboalkoxyethyl)tin halides is believed to occur by a two-step process, with the tetra(β-carboalkoxyethyl)tin compounds as intermediate products.The 270 MHz NMR spectra of the (β-carbobutoxyethyl)tin compounds are presented.