Synthesis of 1-Bromobutane - 3057 Words

November 15, 2007 Synthesis of 1-Bromobutane Introduction: The purpose of this experiment is to synthesize 1-bromobutane from 1-butanol and sodium bromide. In order for this reaction to reach completion there are four major operations that need to be performed. The four major operations include refluxing, simple distillation, separation, and drying. To begin, in order for the compounds to react they will be dissolved in water and sulfuric acid will be added. The addition of sulfuric acid will then generate hydrobromic acid, an important product in the reaction mixture. The hydrobromic acid will react with the 1-butanol when heat is added to the flask during refluxing. Refluxing is the heating of a flask to boiling and then allowing†¦show more content†¦Reaction Mechanism: NaBr, H2SO4 CH3CH2CH2CH2OH CH3CH2CH2CH2Br + NaHSO4 + H2O (1-Butanol) (1-Bromobutane) Flowchart: -Reflux for 30 minutes -Perform Simple Distillation -Simple Distillation -Infrared Spectroscopy Observations: • After adding sulfuric acid to the mixture of NaBr, 1-butanol, and water there was a brief yellow stream that appeared and then became clear. • After adding all four reactants and keeping the mixture cold a cloudy, white residue was present in the bottom of the flask. • A cold, wet pipe cleaner was then added to the top of the reaction flask to keep the column cold which caused no vapors to rise into the column. • When the heat was added to the flask the residue dissolved and the reactant mixture was clear. • Before boiling commenced two layers formed in the reaction flask. The bottom layer was slightly cloudier than the clear top layer. • As the mixture boiled the vapors rose slightly into the bottom ofShow MoreRelatedSynthesis of 1- Bromobutane an Sn2 Reaction1160 Words   |  5 PagesExperiment 13: Synthesis of 1- Bromobutane An SN2 Reaction Theory: One of the methods of preparing alkyl halides is via the nucleophilic substitution reactions of alcohols. Alcohols are inexpensive materials and easy to maintain. However, they are a poor leaving group the OH group is a problem in nucleophilic substitution, this problem is fixed by converting the alcohol into H2O. 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