Diels Alder Reaction Lab

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Organic Chemistry II Lab
Diels Alder Reaction Purpose:
In this experiment a Diels-Alder reaction was used to form the products. Cyclopentadiene and maleic anhydride were reacted together to form cis-Norbornene-5,6-endo-dicarboxylic anhydride. 7-oxabicyclo{2.2.1}hept-5-ene-2,3-dicarboxylic anhydride was also produced through a Diels-Alder reaction with the combination of furan and maleic anhydride. Equation:

Procedure:
Part 1
In a flask equipped with a septum side arm and topped with distillation heat and a thermometer add 2.5ml of mineral oil. Heat the oil. At the end of the distillation heat place an ice filled beaker. When the oil reaches 250°C inject 0.6ml of dicyclpentadiene drop wise through
…show more content…
The first reaction was cyclopentadiene with maleic anhydride to from the product of cis-Norbornene-5,6-endo-dicarboxylic anhydride. Before that could be produced, dicyclopentadiene had to be cracked to get cyclopentadiene for the starting material. Cyclopentadiene and maleic anhydride were mixed together and cooled to room temperature, which produced crystals. The solvent was pipette out of the tube to separate the crystals. The crystals were then scraped on the filter paper to get weight and melting points. The end product yielded 82.6%. The melting point was observed at 162-163°C. This indicated a close to pure substance with the actual melting point being

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