CHM 226 - Tech 717 - Diels-Alder Rxn

CHM 226 - Tech 717 - Diels-Alder Rxn - TECH 717 The...

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TECH 717 The Diels-Alder Reaction INTRODUCTION This experiment utilizes the Diels-Alder reaction, which is the addition of electron-poor alkenes and alkynes to electron-rich dienes to form cyclohexenes and cyclohexadienes. These reactions are termed concerted because the breaking and forming of bonds occur in the same step. The Diels-Alder reaction is one of the most useful synthetic reactions in organic chemistry. PROCEDURE First, 0.122 g of anthracene and 0.055 g maleic anhydride were weighed and placed into a 5 mL vial. 1.0 mL of xylene was added along with a boiling chip and attached to a condenser. The mixture was heated using a sand bath and allowed to reflux for 30 minutes and then cooled to room temperature. The vial was then placed in an ice bath for 5 minutes. The crystals were filtered using a vacuum filtration system and washed with chilled xylene. The crystals were allowed to dry and then were weighed. The product was then purified by placing it into a 10 mL flask and adding 1-3 mL xylene.
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This note was uploaded on 05/04/2008 for the course CHM 226 taught by Professor Jesse during the Spring '07 term at Rhode Island.

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CHM 226 - Tech 717 - Diels-Alder Rxn - TECH 717 The...

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