Question

Question 2&3

Post-Lab: Experiment 9 1. Define the terms diene and dienophile as they apply to the Diels-Alder reaction Based on the amount of cyclopentadiene you used, how many grams is this? 2. The cyclopentadiene collected from the retro-Diels-Alder reaction must be kept cooled and used fairly soon. Why? 3. 159 Experiment 9 Cycloadditions: The Dieis-Alder Reaction

Answer 1

Diene - An unsaturated hydrocarbon contain - ng two double bonds between Carbon atoms. dienophile - Dienophile is compound that readily reacts with a cliene, especially an alkene in the diels-Alder reaction. Diene and dienophile both used in Diels-Alder reaction as le + diene dienophile Diels-Alder reachon is a chemical reaction between a conjugated diene and a substituted alkene, ie dienophile. to form a substituted cyclohexe- ne derivatives. At least 4 to 5 gram cyclopentadiene is used in Diels-Alder reaction in my laboratory. It demerices rapidly, therefore stored in cold place. Cyclopentadiene is a liquid with a lore boiling point. It spontaneously deme dimerice "exothermically and thus should be stored cold and used quickly. It is dimerices, sapidly_at room temperdture and collected at o'c and was stored at -20°c for at least one wie week