Organic Chemistry Diels Alder Reaction

David Snyder Experimental Date: September 16, 2011 September 21, 2011 Yu Wang Section: Friday, 9:30 am Diels-Alder Reaction Abstract: I readiness ard the bicyclical ring 4-cyclohexene-cis-1,2-dicarboxylic anhydride by contradicting butadiene with maleic anhydride. I heated my cloths in wane in order to not lose some(prenominal) material to the environment after cooling and getting our crystals I washed them, and analyzed it by taking its melting request which I tack together to be 94-96 degrees Celsius. I as well weighed the product and make up its mass to be 1.286g. With maleic anhydride universe the limiting reagent I found that this produced a percent number of Introduction: The purpose of this lab was to have a optical and hands on slip of the Diels-Alder contradiction. In this example I created the bicyclic ring agreement 4-cyclohexene-cis 1, 2-dicarboxylic anhydride from the starting materials of butadiene and maleic anhyd ride. What makes the Diels-Alder reaction so important is that its our world-class real look pericyclic reactions. Its a useful system in the preparation of cyclic compounds which can be very stable in parity to the acyclic starting materials I used.

An important piece of breeding about the Diels-Alder reactions is that they are stereospecific, heart that the dienophile and diene can only move if they meet from severally one different in the honest geometrical angles and the molecules can fit into each other the rightly way. In this case we need the dienophile to be cis for this reaction to die because the two molecule s need to approach each other at an angle pa! rallel to each other. This forms bare-assed sigma bonds and reduces the number of pi bonds which are less favorable to a molecule. The mechanism itself is a concerted one, meaning that there is no intermediate. The fact that the fuse dienes are so reactive are due to the pi system from the double bonds they have and the alkenes willingness to react with them. Their desire to react with the...If you want to get a all-embracing essay, order it on our website: BestEssayCheap.com

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