Diels alder lab

Diels alder reaction lab report introduction

The first time we performed the experiment, the crystals did not recrystallize for day three. John Almy. Ditzler , Kenneth V. Cited By This article is cited by 17 publications. The bonding electrons redistribute forming two carbon-carbon bonds to create a cyclic product. Dissolve the crystals in a minimal amount of acetone. Lisa P. With a cyclic diene and cyclic dienophile, two products form that have different stereochemistries. Day 3: Pipette out any solvent left in vial wih crystals then leave vial open in drawer. The endo-adduct is the kinetic product as it is faster and takes less energy to form. HNMR spectroscopy. When equilibration occurs, the fast reversal of the endo allows for gradual build up of the exo so that the exo will be the major product. Journal of Chemical Education , 83 6 , Goodwin , Gary O.

It is less stable than the exo-adduct, which is the thermodynamic product, so the endo is easily reversible in equilibrium conditions. There were additional peaks for unreacted starting material in addition to the peaks indicating the solvents. Add 0. The State of Organic Teaching Laboratories.

rutgers orgo lab diels alder

We repeated the experiment and it went much better than the first time. WooNick J.

Diels alder stereochemistry

Susan D. Nestor , Mauri A. Ditzler , Kenneth V. Dissolve the crystals in a minimal amount of acetone. Dissolve crystals in a minimal amount of soplvent and filter 1ml through cotton in glass pipet into the NMR tube. Zelisko , Hazem Y. HNMR spectroscopy. Seal vial and place in refrigerator until next lab so that it crystallizes. Journal of Chemical Education , 80 11 , Elizabeth A. There were additional peaks for unreacted starting material in addition to the peaks indicating the solvents. Journal of Chemical Education , 81 5 , The possible products formed are the endo and exo furan-maleic anhydride adducts C8H6O4.

HantzMatthew D. Journal of Chemical Education85 11 When equilibration occurs, the fast reversal of the endo allows for gradual build up of the exo so that the exo will be the major product.

diels alder reaction lab report conclusion

Herrick, and Kenneth V. Errors could have been made in adding too much solvent, the wrong solvent or even in the preparation for NMR.

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Looking beyond the endo Rule in a Diels