反应详情

A solution of 176 g (1 mole) of triethyl orthopropionate and 96 g (1.2 moles) of pyridine in 1 l of carbon tetrachloride was placed in a 2 l flask and 160 g (1 mole) of bromine was slowly added over two hours to the solution under ice-cooling. The resultant reaction mixture was allowed to stand at room temperature for one day to form a precipitate, which was then filtered off. The filtrate was concentrated by evaporation of the solvent and the residue was subjected to distillation under reduced pressure to afford 206 g (81%) of 1,1,1-triethoxy-2-bromopropane with a boiling point of 85° C./13 mmHg.

1. temperaturecooling
2. customThe resultant reaction mixture
3. customto form a precipitate, which
4. filtrationwas then filtered off
5. concentrationThe filtrate was concentrated by evaporation of the solvent
6. distillationthe residue was subjected to distillation under reduced pressure