[PDF] 3 sulfolene and maleic anhydride reaction

In this experiment, 3-sulfolene will be heated in the presence of the dienophile maleic anhydride. The released butadiene from the retro Diels-Alder reaction will react with the dienophile to form an adduct, cis-4-cyclohexene-1,2-dicarboxylic anhydride.
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  • What is the product of 3-sulfolene and maleic anhydride?

    3-Sulfolene reacts with maleic anhydride in boiling xylene to cis-4-cyclohexene-1,2-dicarboxylic anhydride, obtaining yields of up to 90%.

  • Why is it important that the 3-sulfolene and maleic anhydride are fully dissolved before heating the reaction mixture to reflux?

    Both reactants should be completely dissolved before heating because the 3-sulfolene must decompose to form butadiene. If the butadiene forms and evaporates before the maleic anhydride dissolves, a reaction will not take place.

  • What is the function of 3-sulfolene in the practical reaction?

    ? 3-Sulfolene is used to create 1,3 butadiene through decomposition while in solution with maleic anhydride. ? The solution must be warmed slightly so that all of the sulfolene degenerates into butadiene that will react with the anhydride.
  • During the distillation process, the 3-sulfolene was decomposed to form 1,3-butadiene and sulfur dioxide. The excess 1,3-butadiene and the sulfur dioxide are gases at room temperature and were distilled away during reflux.
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DIELS-ALDER REACTION OF 13-BUTADIENE AND MALEIC

It was easier to start with solid 3-sulfolene and then decompose it rather than starting with gaseous 1



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In this experiment 3-sulfolene will be heated in the presence of the dienophile maleic anhydride. The released butadiene from the retro Diels-Alder reaction 



Justin Barry Professor Bill Dailey Chemistry 502 Experiment #4

Jul 24 2006 Butadiene will react with maleic anhydride and the sulfur ... Yield from the initial reaction of 3-sulfolene and maleic anhydride was 88.7%.



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the Diels-Alder reaction described as a cycloaddition the thermal loss of sulfur dioxide from. 3-sulfolene to give 1





3-Sulfolene: A butadiene source for a Diels-Alder synthesis: An

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1 Diels-Alder reaction: 1 + 2: 13-Butadiene Hydrolysis:

Jul 23 2007 A Diels-Alder reaction of 1



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Jul 24 2006 will add heat to 3- Sulfolene





CH 227 Pre-lab: Diels-Alder Reaction Name Section/TA 1. How

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