exp7A col - The Diels-Alder Reaction Reaction of Anthracene...

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1/24/07 The Diels-Alder Reaction: Reaction of Anthracene with Maleic Anhydride Balanced Chemical Equation O O O + heat O O O anthracene maleic anhydride 9,10-dihydro-9,10-ethanoanthracene- 11,12-dicarboxylic anhydride Table of Reagents Molecular Weight (g/mol) Melting point (°C) Anthracene 178.23 216-218 Maleic anhydride 98.06 54-56 Diels-Alder Adduct 276.29 261-262 Safety Information Keep xylene away from flames and hot plates. Waste xylene filtrates and washing are to be put in the bottle labeled WASTE XYLENE. Procedure 0.3 g of anthracene, 0.15 g of maleic anhydride, 3 mL of xylene, and a magnetic spin vane were put in a 10 mL. A reflux condenser fitted with a CaCl 2 drying tube was attached to the flask. The flask was heated and stirred using a hot sand bath on a hot plate and refluxed for 30 minutes. No water was run through the condenser; air was sufficient. After the reflux period, the flask was cooled to room temperature and chilled in an ice bath for 10 minutes, completing crystallization.
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