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A 1-liter four-necked flask equipped with a thermometer, a condenser, a stirrer and a dropping funnel was charged with 19.4 g (0.8 mole) of magnesium, 118.9 g (0.8 mole) of 2-chlorooctane and 200 g of tetrahydrofuran, and they were reacted in a stream of nitrogen. To the resulting 2-octyl magnesium chloride solution was added dropwise a solution of 67.7 g (0.24 mole) of mono-n-butyltin trichloride in 200 ml of xylene with stirring at room temperature over the course of 30 minutes. The reaction mixture was reacted for 3 hours at the refluxing temperature, and then subjected to hydrolysis to obtain 120 g of n-butyl tri-2-octyltin having a purity of 98.7%.

1. customA 1-liter four-necked flask equipped with a thermometer, a condenser, a stirrer and a dropping funnel
2. customwere reacted in a stream of nitrogen
3. customThe reaction mixture was reacted for 3 hours at the refluxing temperature
4. customsubjected to hydrolysis