Preview

Synthesis of 1-Bromobutane

Satisfactory Essays
Open Document
Open Document
274 Words
Grammar
Grammar
Plagiarism
Plagiarism
Writing
Writing
Score
Score
Synthesis of 1-Bromobutane
Synthesis of 1-bromobutane from 1-Butanol using the SN2 Reaction

Abstract:
The objective of this experiment is designed to study the synthesis of 1-bromobutane from 1 butanol using a SN2 reaction.. The product will then be analyzed using a flamed loop test by use of fire.
Reaction Mechanism: CH3CH2CH2CH2—OH H+ CH3CH2CH2CH2— +OH2 Br- CH3CH2CH2CH2—Br + H2O 1-butanol 1-bromobutane

Reagent Table: Reagent | MW (g/mol) | Den.(g/ml) | Bp (°C) | Mass/Vol | Mmoles | Equiv | 1-butanol | | | | | | | NaBr | | | | | | | Sulfuric Acid | | | | | | | Compound/Product | | | | | | | 1- bromobutane | | | | | | | | | | | | | |

Discussion:
SN2 reactions are substitution reactions that involve the exchanging of a group(s) in a molecule. Nucleophiles are electron donors and want to give them away to electron acceptors. If the leaving group is a bad leaving group.
In this experiment, I had foam in my flask from the microscale kit that could of caused an error in my desired product. The test tube 3 had sulfuric acid in it would not separate the layers. Due to this problem I had to swish the contents slowly using a pipette. The swishing process didn’t help to separate any layers, just made the product look turbid. Due to this I added a couple drops of water that helped the product to separate its layers.

Conclusion:
SN2 reactions are substitution reactions that are performed in organic labs. In this experiment 1-butanol was converted into 1-bromobutane by an SN2 reaction. The ending result of the experiment was to test if the product was correct by using a flame test that colorizes the product. The flame test turned green which in this case was an overall

You May Also Find These Documents Helpful

  • Good Essays

    The purpose of the bromination of arenes was to determine the different reactivities of different hydrocarbons with different hydrogen atoms when reacted with bromine under free-radical substitution. The time it took for the bromine color to disappear was used to determine the order of reactivity of the different hydrocarbons.…

    • 869 Words
    • 4 Pages
    Good Essays
  • Good Essays

    The reactivity of alcohols can be accounted for by their molecular structure – particularly by the attachment of their hydroxyl functional group. The isomers of butanol are used as examples of 1°,2° and 3° alcohols to examine this relationship. Each of the three isomers of butanol will be mixed with concentrated hydrochloric acid. The presence of an alkyl halide product is indicated by cloudiness of the mixture, as the halides are only slightly soluble in water. This test indicates that a halogenation reaction has taken place. Each alcohol is also separately mixed with dilute potassium permanganate solution, which…

    • 732 Words
    • 3 Pages
    Good Essays
  • Good Essays

    The objective of this lab was to prepare n-butyl bromide or n-bromobutane, which is derived from an alcohol and an acid. In this case, n-butyl alcohol and sulfuric acid were the reagents. There were two methods of distillation that was involved in this experiment. The first was by reflux distillation, which is used to speed up a chemical reaction without having the reactants/ products evaporate or explode. Data Table 1 indicates the amount of each reagents that was prepared for the reflux apparatus. However, the reagents, sodium bromide, water, and butanol, were combined and cooled in an ice bath previously before transferred to the apparatus. Sulfuric acid was then slowly added to the cooled mixture, causing the solution to turn a dark yellow.…

    • 768 Words
    • 4 Pages
    Good Essays
  • Satisfactory Essays

    In this lab we used multiple techniques to complete and verify the bromination of trans-stilbene. First technique we used was to reflux the mixture; this contains having the mixture boiling so it will evaporate while the condenser will recondense the solvent which is boiling off so the solvent may stay in the reaction. Next we used the melting point of the product to verify which product was produced along with the purity of the compound. Lastly we did a flame test using copper which will change to a green-blue flame in the presence of a halogen.…

    • 669 Words
    • 3 Pages
    Satisfactory Essays
  • Good Essays

    If the gasses are correctly synthesized then there will be a clear reaction with the introduction of the flame, O2, CO2, Air, limewater, and Bromthymol indicator.…

    • 681 Words
    • 3 Pages
    Good Essays
  • Good Essays

    Sn1 Lab

    • 759 Words
    • 4 Pages

    An SN1 reaction is a nucleophilic substitution reaction where the rate determining step of the reaction is unimolecular, thus, the rate equation is often shown as having first-order dependence on electrophile and zero-order dependence on nucleophile. This relationship holds for situations where the amount of nucleophile is much greater than that of the carbocation intermediate. The reaction (which involves a carbocation intermediate) is commonly seen in reactions of secondary or tertiary alkyl halides under strongly basic conditions or, under strongly acidic conditions (in this case strongly acidic conditions), with secondary or tertiary alcohols. In this reaction, the alcohol will be protonated by the hydrochloric acid. H2O will then “leave” the molecule in the rate-determining step, forming a relatively stable tertiary carbocation (which is highly substituted). The chloride ion, acting as a Lewis base will donate a pair of electrons to the carbocation (acting as a Lewis acid) forming the…

    • 759 Words
    • 4 Pages
    Good Essays
  • Satisfactory Essays

    Cu Recycle Lab

    • 401 Words
    • 2 Pages

    Purpose: The purpose of this lab is to carry out an extensive series of reactions based on…

    • 401 Words
    • 2 Pages
    Satisfactory Essays
  • Better Essays

    Organic Lab 7

    • 1806 Words
    • 8 Pages

    Alkyl halides are compounds in which a halogen atom replaces a hydrogen atom of an alkane. Alkyl halides are classified as primary, secondary or tertiary depending on the number of alkyl substituents directly attached to the carbon attached to the halogen atom. The purpose of this lab was to properly prepare t-butyl chloride from t-butyl-alcohol in a concentrated hydrochloric acid. The reaction occurs through a nucleophilic substitution, which is when a nucleophile replaces the leaving group in the substrate. In this lab, the hydroxyl group of t-butyl alcohol is replaced by a chlorine atom. The reaction proceeds through an SN1 mechanism (Weldegirma 38-41).…

    • 1806 Words
    • 8 Pages
    Better Essays
  • Good Essays

    Introduction: This lab experimented on the reactions of the chemicals that undergoes SN1 or SN2 reaction. Nine different compounds were given to be examined with two reagents - NaI in acetone and AgNO3 in ethanol. The SN1 reaction happens in AgNO3 in ethanol reagents, and SN2 reaction is in NaI in acetone.…

    • 1152 Words
    • 7 Pages
    Good Essays
  • Good Essays

    Abstract: The objective of this experiment is to successfully perform a dehydration of a 2-butanol and a dehydrohalogenation of 2-bromobutane to form the products 1-butene, trans-2-butene, and cis-2-butene. It was found that a dehydration of 2-butanol yielded 4.6% 1-butene, 67.3% trans-2-butene, and 28.1% cis-2-butene, and a dehydrohalogenation of 2-bromobutane yielded 19.1% 1-butene, 69.9% trans-2-butene, and 11.0% cis-2-butene.…

    • 836 Words
    • 6 Pages
    Good Essays
  • Satisfactory Essays

    Gas Chromatography Lab

    • 648 Words
    • 3 Pages

    E1 reactions are two-step unimolecular reactions. The first step of an E1 reaction occurs when a leaving group, which consists of a weak base, leaves an organic compound, leaving an intermediate carbocation. In the second step, a carbon on the organic compound is deprotonated by a Lewis base, resulting in the formation of an alkene. The dehydration reactions of 1- and 2-Butanol with sulfuric acid occur through an E1 mechanism, so they follow the steps previously…

    • 648 Words
    • 3 Pages
    Satisfactory Essays
  • Satisfactory Essays

    Synthesis of an Alkene

    • 297 Words
    • 2 Pages

    The weight of our n-Butyl Bromide sample (actual yield) was 0.09g. The percent yield was found to be 4.38%. Only 0.09g of the theoretical 2.055g yield was obtained. The boiling point was 104° C, which is higher than the literature value of 101° C. This is due to the sample being somewhat impure, as impurities tend to increase boiling point. When IR spectroscopy was performed, there were no OH stretches, meaning that the OH- was replaced successfully by the Br-, and the water was separated out.…

    • 297 Words
    • 2 Pages
    Satisfactory Essays
  • Satisfactory Essays

    This experiment involved the addition of trans-cinnamic acid to bromine for the production of 2,3-dibromo-3-phenylpropanoic acid. This process depicted an electrophilic addition of a halogen to an asymmetrically substituted alkene. A result of this process was the presence of a stereospecific bromonium ion formed by the mechanism of the reaction.…

    • 428 Words
    • 2 Pages
    Satisfactory Essays
  • Good Essays

    The overall goal of this experiment is to understand and be familiar of SN1 reactivity. We also learned how to prepare 2-Bromobutane by learning how to distill and extract this product from its organic layer. Finally, another goal was to specifically understand the relative reactivity of alkyl halides under SN1 conditions by reacting the alkyl halide and silver nitrate in ethanol.…

    • 762 Words
    • 4 Pages
    Good Essays
  • Satisfactory Essays

    Grignard Reaction

    • 468 Words
    • 2 Pages

    3. If the bromobenzene is added too quickly, what side product is formed (Draw the structure in pen and name it!)?…

    • 468 Words
    • 2 Pages
    Satisfactory Essays