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Topic: Side reactions for a diels-alder reaction  (Read 9811 times)

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Offline blah

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Side reactions for a diels-alder reaction
« on: October 29, 2007, 09:37:03 PM »
What are some side reactions that could occur with a diels-alder reaction using 1,3-butadiene and maleic anhydride under reflux? 

Offline agrobert

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Re: Side reactions for a diels-alder reaction
« Reply #1 on: October 29, 2007, 09:47:07 PM »
This should be a straight forward reaction.  Side products depend on your reaction conditions. Draw both reactants and identify where the pericyclic reaction occurs.
In the realm of scientific observation, luck is only granted to those who are prepared. -Louis Pasteur

Offline blah

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Re: Side reactions for a diels-alder reaction
« Reply #2 on: October 29, 2007, 09:59:56 PM »
I'm trying to write up the lab report and it asks us to list significant side reactions.  The diene is obtained from a decomposition of 3-sulfolene.  The entire thing is basically just heated.  Would anything react with the xylene solvent?

Offline Custos

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Re: Side reactions for a diels-alder reaction
« Reply #3 on: October 30, 2007, 08:41:23 PM »
1,3-butadiene can polymerise for one thing. Also it's possible for butadiene to undergo Diels-Alder reactions with itself as the dieneophile, althoug it's a much poorer dieneophile than maleic anhydride of course.

Offline blah

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Re: Side reactions for a diels-alder reaction
« Reply #4 on: October 31, 2007, 01:57:04 AM »
thanks, that was exactly what i was looking for!

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