
Concept explainers
Mixing furan (Problem 13.44) with maleic anhydride in diethyl ether yields a crystalline solid with a melting point of 125°C. When melting of this compound takes place, however, one can notice that the melt evolves a gas. If the melt is allowed to resolidify, one finds that it no longer melts at 125°C but instead it melts at 56°C. Consult an appropriate chemistry handbook and provide an explanation for what is taking place.

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Chapter 13 Solutions
Organic Chemistry
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