Diels Alder Reaction

Improved Essays
The Diels Alder reaction is the addition of a diene, which is a hydrocarbon chain containing conjugated double bonds, and a dienophile. This reaction is important in synthesizing cyclohexene rings.
The purpose of this experiment is to undergo the Diels Alder reaction using the diene, anthracene, and the dienophile, maleic anhydride, to produce a molecule called 9, 10-dihydroanthracene-9, 10-a b-succinic anhydride. To determine if the exact Diels Alder adduct was formed, melting point was used. According to Scribd.com, the melting point of this Diels Alder adduct is 262-264oC. At the end of the experiment the melting point of the isolated adduct was used to characterize the product.
In the beginning of the experiment, dry 10 ml round flask

Related Documents

  • Improved Essays

    9-Fluorenone Lab Report

    • 1277 Words
    • 6 Pages

    The product air-dried for about one week. After this time, the 9-fluorenol was recrystallized by a mixed solvent recrystallization4 using methanol and water over the steam table. The solution was cooled to room temperature and put in an ice-water bath for ten minutes. The crystals were collected and placed in the oven to dry for fifteen minutes. The product was weighed to calculate percent yield and its melting point was determined.5, 6 IR spectra of the starting material and the final product was obtained in order to be compared with those of authentic samples.1 Results…

    • 1277 Words
    • 6 Pages
    Improved Essays
  • Decent Essays

    The freezing point of the cyclohexanol was about 17.7°C, and the freezing point for the unknown solute mixed into the cyclohexanol was about 6.2°C. So the approximate change in temperature of the two freezing points was about 11.5°C. With this calculated information, the found molar mass of the unknown solute B was about 278.4g/mol, which is close to given molar mass of octadecanol. Conclusion-…

    • 267 Words
    • 2 Pages
    Decent Essays
  • Decent Essays

    In this experiment, trans-9-(2-phenylethenyl)anthracene was synthesized from 9-anthradehyde and a phosphonium ylide. The phosphonium ylide was generated from the reaction of benzyltriphenylphosphonium chloride with sodium hydroxide. The percent yield of trans-9-(2-phenylethenyl)anthracene was 66.88%, which is adequate. The loss of products likely occurred during the transferring of the products from one flask to another as well as during the filtration process. It was not possible to collect all of the products from the flask since they were stuck to the walls of the flask.…

    • 495 Words
    • 2 Pages
    Decent Essays
  • Decent Essays

    Stereochemistry 5. Introduction In this experiment, stereochemistry was explored by the isomerization of dimethyl maleate and the analysis of carvones. The isomerization was accomplished with the use of bromine, which broke the double bond to allow bond rotation. Free bond rotation allowed molecules to shift into the trans state before the double bond was reformed to create dimethyl fumarate.…

    • 929 Words
    • 4 Pages
    Decent Essays
  • Improved Essays

    Unknown Compounds

    • 695 Words
    • 3 Pages

    Once the solubility tests were finished, this provided numerical evidence that aided in determining the identification of the compound. From these three weeks of investigation, the group…

    • 695 Words
    • 3 Pages
    Improved Essays
  • Decent Essays

    Isopropyl Acetate Lab

    • 823 Words
    • 4 Pages

    This was determined to be an isopropyl acetate and isopentyl acetate mixture. During the experiment, the temperature stabilized to 91°C. This is closest to the boiling point of isopropyl acetate, which has a boiling point of 89°C. After 10 mL of this mixture was distilled, the temperature decreased, meaning the isopropyl acetate ran out. The system needed to keep the heat it had, so foil was wrapped around the heating mantle and distillation pot.…

    • 823 Words
    • 4 Pages
    Decent Essays
  • Improved Essays

    Green Chemistry and the Diels-Alder Reaction Purpose The purpose of this reaction is to bring about the movement of green chemistry which is a safer, more sustainable chemistry to all levels of chemistry. The use of 12 principles can make in principle a reaction greener with the use of modifications. In this lab, the Diels-Alder reaction will be performed by reacting (E,E)-2,4-hexadien-1-ol with maleic anhydride without the use of a solvent to make the reaction more greener.…

    • 745 Words
    • 3 Pages
    Improved Essays
  • Improved Essays

    Molecule A was determined to trans-1-tertbutyl-4-propylcyclohexane and had a minimum energy of +101.6267 KJ/mol, making it the lowest minimum value out of the four other compounds. Molecule B was cis-1-tertbutyl-4-propylcyclohexane and it had a minimum energy of +106.7177 KJ/mol, which is the second lowest energy structure out of the four observed. Molecule C was trans-(2S,6R)-1-tertbutyl-2,6-dimethyl-4-propylcyclohexane and it had a minimum energy of +204.5885 KJ/mol, making it the second highest minimum value when compared to the other five structures. Molecule D was cis-(2S, 6S)-1-tertbutyl-2,6-dimethyl-4-propylcyclohexane and it had a minimum energy of +223.0300 KJ/mol, which is the highest minimum energy recorded in this section of the lab. Molecule E was determined to be trans-(3R,5S)-1-tertbutyl-3,50dimethyl-4-propylcyclohexane and it had a minimum energy of +148.1879 KJ/mol.…

    • 864 Words
    • 4 Pages
    Improved Essays
  • Improved Essays

    Calorimetry Lab

    • 777 Words
    • 4 Pages

    The products underwent recrystallization by dissolving in hot absolute ethanol and boiling distilled water, then cooled in an ice bath. The products were then isolated by vacuum filtration and then the melting point was tested. The melting point of the products was 27°C.…

    • 777 Words
    • 4 Pages
    Improved Essays
  • Superior Essays

    Identifying an Unknown Compound Using Various Chemical Analysis Techniques Joshua Nash and Aquilla Young Abstract The introduction of this lab report exposes the reader to the different scientific concepts that are to be used such as melting point calculations, retention factors, and solubility in various aqueous solutions. The experimental provides the basics of using a melting point apparatus, determining solubility, and performing thin layer chromatography. In the results section the findings of my experimental are tabulated and presented in a well-organized manner so that the reader can understand how each value was calculated.…

    • 2190 Words
    • 9 Pages
    Superior Essays
  • Improved Essays

    Unknown Organic Compound

    • 673 Words
    • 3 Pages

    This experiment demonstrated how to determine the freezing point and purity of an unknown organic compound. In general, the freezing/melting point is the temperature at which the freezing point (solid phase) and the melting point (liquid phase) meet. When an organic substance does not contain any impurities, it will melt at a specific single temperature. However, when impurities are present, they will concentrate within the liquid as it is freezing, causing a decrease in the freezing point and widening the melting/freezing range. Since unknown #5 did not melt in the ice-water bath, which was a temperature of 0oC, I made a salt-ice-water bath.…

    • 673 Words
    • 3 Pages
    Improved Essays
  • Improved Essays

    The separated compounds were then classified by determination of their melting points and 1H NMR. Results and Discussion In this…

    • 1031 Words
    • 5 Pages
    Improved Essays
  • Improved Essays

    The mixture that was 50% Urea, 50% trans-cinnamic acid had the lowest melting point in the experiment. The value for the 1:1 substance was found to be between 95.8 ˚C -98.5 ˚C. The substance that was 10 % urea, 90% trans-cinnamic acid had a melting temperature of 126.7 ˚C -133.3 ˚C, making it lower than both pure…

    • 756 Words
    • 4 Pages
    Improved Essays
  • Great Essays

    Unknown Salt Lab Report

    • 1742 Words
    • 7 Pages

    In performing this test, it was found that salt #287 did not melt under the flame of the bunsen burner which had a temperature of 800 ºc. This indicates the melting point of the salt is above 800-degree celsius. This result remains consistent with the known melting point of Sodium chloride of 800.7-degree celsius. Using the result of this test, salt #287 is most likely Sodium Chloride as no other salt has a melting point above 800- degree celsius. This experiment yielded conclusive results on the possible identities of the salts.…

    • 1742 Words
    • 7 Pages
    Great Essays
  • Improved Essays

    MacBeth by William Shakespeare is a play that takes place in scotland. MacBeth is on a journey,he was manipulated by the evil witches who told Lady MacBeth that he could become the next king. MacBeth is a guy who has inner evil as well and his journey is based on his ambition and his problem with listing to people who try to help The evil Sisters told him and Lady MacBeth that he could become the next king and because of his evil ambitions he listened instead of ignoring them. Lady MacBeth is also somebody who leads him into traps and he always listens to her.…

    • 553 Words
    • 3 Pages
    Improved Essays