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Alkene Halogenation OBJECTIVE: To prepare alkyl halides by reacting alkenes with hydrogen chloride and bromine. To observe the results of...
Alkene HalogenationOBJECTIVE:To prepare alkyl halides by reacting alkenes with hydrogen chloride and bromine.To observe the results of rearrangement mechanisms on reaction products.PROCEDURE:Enter the stockroom and click on the clipboard. Select the Hydroboration ReactionChoose the starting reagents: 4-Methyl-2-Pentene and a solvent (ether)Return to the lab and build the experimental set up. Use a heater, condenser and N2 gas. Add the reagent, HCl.You will monitor the reaction on the pull down TV and with TLC. Run a TLC sample before you start the reaction. Some reactants may not show up on TLC so make sure that you notice the contents of the reaction vessel on the TV.Note the time on the laboratory clock. Start the reaction by turning on the stir plate. Advance the laboratory clock by an interval of 1 minute and take another TLC sample and check the TV.Repeat this step until you note the appearance of product on the TLC plate or on the TV. Note the time and the size of the TLC spot.Continue to advance the clock in 20-minute intervals. Take a TLC sample and check the TV at each interval. Note the time that the reaction is complete. (The starting material will no longer be present in the reaction vessel as indicated on the TV or the TLC sample).Repeat the procedure with Buta-1,3-diene and ether and HCl. (Click on the clipboard and select the Alkene Bromation reaction.)Repeat the procedure with cyclopenta-1,3-diene and ether and Br2. (Click on the clipboard and select the Diels Alder reaction.)Click on the assessment icon at the top right corner of this page and use the data from the experiment to answer the questions in the Laboratory Report 3 Alkene Halogenation.1. (Points: 1)
