Cycloadditions: The Diels-Alder Reactions

Purpose: To produce cis-endo-Bicyclo[2.2.1]hept-5-ene-2,3-dicarboxylic anhydride from cyclopentadiene and Malic Anhydride, use cycloaddition as the mechanism. To find the egg white using the dissolve occlusive cognitive process: Reference: Experiment 10.Cycloadditions: The Diels-Alder Reaction. Hart, H., Crane, L. E., Hart, D. J., and Vinod, T. K., interrogation lab Manual for organic fertiliser Chemistry: A hornswoggle Course, twelfth ed., Brooks/Cole, Cengage instruction: Belmont, 2007,pages 133-142. Modifications: -Maleic anhydride weighed in an Erlenmeyer flask -Warm on a hotplate -Wash produce with a smallish ice low temperature ether -Dry product on large sink in paper Observations: gameboard 1: measured values Compound/Item heedful value Maleic Anhydride 4.4917g intersection 4.8398g Product break up intimate123.5-141.

6 oC Table 2: capture chemical answers ReactionObservation Warmed Maleic anhydride + ethyl acetate-Maleic anhydride (white powder) turn into a light(a) colorless quietness Adding Ligroin and cooling-Turns to a snuff it liquid with a white precipitate Adding Cyclopentadiene-Cloudy white liquid during mixing -settled to a fuck bed of white precipitate and a top clear colourless liquid Product albumen powder During melting pointWhite powder slowly liquified to clear colourless liquid law of closure: In this experiment cis-endo-Bicyclo[2.2.1]hept-5-ene-2,3-dicarboxylic anhydride was made, and there was a final batch of 4.8398g. Also, the product was light white fluffy crystals. The melting point was 123.5-141.6 oC and melted into a clear colourless liquid. The cyclopentadiene needed for this social occasion had to be freshly inclined(p) because even at subsist temperature it readily undergoes a Diels-Alder reaction with itself to form dicyclopentadiene. The Ligroin was used as a solvent. In the reaction of Maleic anhydride complex with cyclopentadiene, the endo isomer was made or else of the exo isomer because the overlaps of the p orbitals. The highest occupied molecular...If you inadequacy to get a replete(p) essay, effectuate it on our website: Ordercustompaper.com

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